Reznor Xe series User manual

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 1

Installation/Operation/Maintenance

FormI-XE/CRGB/RPB(VersionB)

ObsoletesFormI-XE/RGB/RPB(VersionA)

Model Series XE, CRGB, RPB

Packaged Duct Furnace

Assemblies

Index by Page Number

GENERAL

Installation should be done by a qualified agency in accordance with the instructions in this

manual and in compliance with all codes and requirements of authorities having jurisdiction.

The instructions in this manual apply to the packaged systems listed below.

FORYOURSAFETY

If you smell gas:

1.Openwindows.

2.Don'ttouch electrical switches.

3.Extinguishanyopenflame.

4.Immediatelycall yourgassupplier.

FORYOURSAFETY

Theuseandstorageofgasolineorotherflammablevaporsandliquidsin

opencontainersinthevicinity of this applianceishazardous.

WARNING: Improper installation, adjustment, alteration, service, or

maintenance can cause property damage, injury or death. Read the

installation,operation,andmaintenanceinstructionsthoroughlybefore

installingorservicingthisequipment.

WARNING: Gas-fired appliances are not designed for use in hazardous

atmospheres containing flammable vapors or combustible dust, in

atmospheres containing chlorinated or halogenated hydrocarbons, or in

applicationswithairbornesiliconesubstances.SeeHazardLevels,Page2.

Table of Contents Para. Page

Installation and Operation ......... 1-29 ... 1-30

Check Installation and Start-Up ... 30 . 30-31

Optional Accessories ................. 31-36 . 31-41

Service/Maintenance .................. 37-41 . 41-44

Adjusting Blower Speed ............................... 24

Optional Air Flow Proving Switch .............. 24

Opt High Ambient Limit Control .................. 25

AquaSaver Timer Adjustment ........................ 34

Belts ...............................................................24

Blocked Vent Switch ...................................... 25

Blower Motors ............................................... 24

Blower Rotation ............................................. 24

Burner Air Adjustment .................................. 30

Burner Rack Removal ..................................... 42

Burners ........................................................... 29

Carryover System ........................................... 29

Check Installation and Start-Up ....................30

Chlorines .......................................................... 7

Cleaning Pilot and Main Burners .................. 42

Cleaning the Heat Exchanger ........................ 42

Clearances ........................................................ 7

Optional Cooling Coil Cabinet ..................... 38

Combustion Air Requirements ........................ 7

Condensate Drain .......................................... 13

Location of Controls ...................................... 17

Cooling Coil Cabinet .................................... 38

Optional Dampers and Controls ....................35

Dimensional Data ............................................ 3

Direct Digital Control System ....................... 29

Discharge Dampers ........................................ 39

Disconnect Switch ......................................... 17

Duct Connections .......................................... 13

Optional Ductstat .......................................... 26

Electrical Supply and Connections ............... 16

Optional Electronic Modulation .................. 26

Opt Evaporative Cooling Module ................ 32

Optional Fan Control .................................... 25

Optional Dirty Filter Switch ......................... 38

Filter Arrangements .......................................38

Optional Filter Rack and Filters .................... 37

Gas Piping and Pressures .............................. 14

Gas Valve ........................................................ 41

General ............................................................. 1

Hazard Intensity Levels ................................... 2

Ignition Controller ......................................... 29

Installation Codes ............................................ 2

Limit Control .................................................24

Manifold Pressure Setting ............................. 15

Optional Mechanical Modulation ................. 26

Mounting Furnaces (Indoor) ........................... 8

Mounting Outdoor Models ............................. 8

Optional Equipment ...................................... 31

100% Outside Air Hood ................................31

Pilot and Ignition Systems ............................ 29

Reverse Flow, Limit Control .......................... 25

Roof Curb Assembly and Installation .............. 9

30% Screened Air Hood Opening ................ 32

Optional 4-foot Stack Extension ................... 12

Start-Up .......................................................... 30

Suspending Furnaces ....................................... 8

Troubleshooting ............................................43

Optional Two-Stage Operation ..................... 25

Uncrating ......................................................... 2

Valve ............................................................... 25

Variable Frequency Drive .............................. 24

Vent Cap Installation .....................................12

Optional Power Venting ................................ 12

Venting ........................................................... 11

Venting Requirements .................................... 11

Optional Vertical Flue Discharge .................. 13

Warranty ........................................................... 2

Wiring Diagrams ............................................18

Characteristics

Installation Vent CFM Thermal

Efficiency

XE Standard

HXE High

CRGB Standard

HCRGB High

RPB Standard

HRPB High

80%

Model Series

Designation

Power

Indoor

Outdoor

Gravity

Form I-XE/CRGB/RPB, Page 2

1. Approval and Installation Codes

The models covered in this manual are design certified or approved duct

furnaces that are factory assembled with air handing components, creat-

ing a unified packaged furnace/blower system. The packaged system

models listed on page 1 are design-certified toANSI and CSAStandards

by the Canadian Standards Association. All models are approved for

installation in the United States. All models except Model CRGB and

Model HCRGB are approved for installation in Canada.All furnaces are

approved for use with either natural gas or propane. The type of fuel for

which the furnace is equipped and the correct firing rate are shown on

the rating plate attached to the unit. Electrical characteristics are shown

on both the motor nameplate and the unit rating plate.

These units must be installed in accordance with local building codes. In

the absence of local codes, in the United States, the unit must be in-

stalled in accordance with the National Fuel Gas Code NFPA54/ANSI

Z223.1 (latest edition). A Canadian installation must be in accordance

with the CSA B149.1 Natural Gas and Propane Installation Code. These

codes are available from CSA Information Services, 1-800-463-6727.

Localauthoritieshavingjurisdictionshould be consulted before installa-

tion is made to verify local codes and installation procedure require-

ments.

Special Installations (Aircraft Hangars/Garages)

Installations in aircraft hangars should be in accordance with NFPANo.

409 (latest edition), Standard forAircraft Hangars; in public garages in

accordance with NFPA No. 88A (latest edition), Standard for Parking

Structures; and for repair garages in accordance with NFPA No. 88B

(latest edition), Standard for Repair Garages. In Canada, installations in

aircraft hangars should be in accordance with the requirements of the

enforcing authorities, and in public garages in accordance with CSA

B149.1 codes.

WARNING: To ensure safety, follow the lighting

instructions located on the outlet box cover plate

in the heater section of the packaged furnace

assembly.

HAZARDINTENSITYLEVELS

usedforWarningsinthisManual

1. DANGER:Failuretocomplywillresultin

severepersonalinjuryordeathand/or

propertydamage.

2. WARNING:Failuretocomplycouldresultin

severepersonalinjuryordeathand/or

propertydamage.

3. CAUTION:Failuretocomplycouldresultin

minorpersonalinjuryand/orpropertydam-

age.

WARRANTY:Warranty is void if......

a. Packaged furnacesareusedinatmospheres containing

flammablevaporsoratmospherescontaining

chlorinatedorhalogenatedhydrocarbonsorany

contaminant(silicone,aluminiumoxide,etc.)that

adherestothe sparkignitionflamesensing probe.

b. Wiringisnotin accordance withthediagramfurnished

withtheheater.

c. Unitisinstalledwithoutproperclearancesto

combustiblematerialsorwithoutproperventilationand

airforcombustion.(See Paragraphs 5and 6.)

d. Furnaceairthroughputisnotadjustedwithintherange

specifiedontheratingplate.

3. Uncrating and Preparation

This furnace was test operated and inspected at the factory prior to

crating and was in operating condition. If the equipment has incurred

any damage in shipment, document the damage with the carrier and

contact your Reznor distributor.

Check the rating plate for the gas specifications and electrical character-

istics of the furnace to be sure that they are compatible with the gas and

electric at the installation site. Read this booklet and become familiar

with the installation requirements of your particular model. If you do

not have knowledge of local requirements, check with the local gas

company or any other local agencies who might have requirements

concerning this installation. Before beginning, make preparations for

necessary supplies, tools, and manpower.

Check to see if there are any field-installed options that need to be

assembled to the furnace prior to installation.

Option Parts - Some gas control options will have parts either shipped

loose with the heater or shipped separately. If your unit is equipped

with any of the following gas control options, be sure these parts are

available at the job site.

Other shipped-separate options could include a roof curb, a cooling coil

cabinet, a screened outside air hood, a gas shutoff valve, a condensate

drain fitting, a thermostat, a different control switch, a power venter, a

remote console, a manual fan switch, a vertical vent terminal, a gas

supply regulator, and/or a disconnect switch. Or, if equipped with an

optionalevaporative cooling module, awater hammer arrestor orfill and

drain or freeze kit could be shipped separately.

Heatin

-- Gas O

tion AG7

Control O

tion Thermostat, P/N 48033

Makeu

Air -- O

tion AG3, AG6, AG8 or AG13

Gas Control Control Switch, P/N 29054

tions O

tion AG9

Remote Temperature Selector, P/N 48042

(If an o

tional Control Switch, P/N 29054

remote console O

tion AG15

is ordered, the Remote Temperature Selector, P/N 115848

control switch Stage Adder Module, P/N 115849

is mountedon Control Switch, P/N 29054

the console.) O

tion AG16

Remote Temperature Selector, P/N 115848

Stage Adder Module, P/N 115849

Remote Display Module, P/N 115852

Control Switch, P/N 29054

Option AG39

Remote Temperature Selector, P/N 174849

2. Warranty

Refer to limited warranty information on the warranty card in the

"Owner's Envelope".

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 3

4. Dimensions

FIGURE1A-Dimensions(inchesandmm)ofIndoor/GravityVentedSystem

3/4 (19)

JGF

WCX

59 (1499)

4 (102)

2-1/8

(54)

Blower Furna e

Gas

Top View Side View

AIRFLOW

Control Wiring

Entran e

Supply Wiring

Entran e

Furna eBlower

E18

(457)

3/4 (19)

3-5/8 (92)

8 (203)

3/4

(19)

(4)Mounting So kets

1 IPS free turning

female pipe thread

1-3/4 (44)

JGF

WCX

60 (1524)

4 (102)

2-1/8

(54)

Blower

Furna e

Gas

Top View Side View

AIRFLOW

Control Wiring

Entran e

Supply Wiring

Entran e

Furna eBlower

19-1/2

(495)

(457)

3/4 (19)

3-5/8 (92)

8 (203)

3/4

(19)

(4)Mounting So kets

1 IPS free turning

female pipe thread

3-1/4 (83)

19-1/2

(495)

3-1/4 (83)

Verti al return air

opening is apped

at the fa tory.

DimensionsofModel (H)XEwith Standard BlowerCabinet (Standard blower cabinethas "fullopen" endandwill not accommo-

date dampers.An optional cabinet is available with a smaller horizontal inlet that will accommodate dampers; see dimensional

drawing below.An optional bottom inlet will also accommodate dampers.)

DimensionsofModel (H)XE withOptional BlowerCabinet (Optionalblower cabinethas ahorizontal inletthat will accommodate

dampers. The cabinet also has a bottom inlet that is shipped with a cap; the bottom inlet will accommodate dampers.)

Dimension Key:

A x 18" (457mm) = Discharge Opening

B= Hanger Centerline - Furnace Section

C x E = Return Air Opening with Standard Cabinet

C x 19-1/2" (495mm) = Return Air Openings with Optional Cabinet

X= Hanger Centerline - Standard and Optional Blower Cabinet

Dimensions (inches andmm) - Gravity-Vented/Indoor Models XE/HXE

Gas Connection

Natural Propane

inches 12-1/2 13-1/2 17-3/8 9-1/2 27-3/4 18 1/2 1/2 3-3/4 32-1/4 36-1/2 5 Rd 22 16-1/4

mm 318 343 441 241 705 457 13 13 95 819 927 127 Rd 559 413

inches 12-1/2 13-1/2 17-3/8 9-1/2 27-3/4 18 1/2 1/2 3-3/4 32-1/4 36-1/2 6 Rd 22 16-1/4

mm 318 343 441 241 705 457 13 13 95 819 927 152 Rd 559 413

inches 15-1/4 16-1/4 17-3/8 9-1/2 27-3/4 18 1/2 1/2 3-3/4 32-1/4 36-1/2 7 Ov 22 16-1/4

mm 387 413 441 241 705 457 13 13 95 819 927 178 Ov 559 413

inches 20-3/4 21-3/4 23 9-1/2 27-3/4 19-3/8 1/2 1/2 2-3/8 32-1/4 36-1/2 8 Ov 27-1/2 21-3/4

mm 527 552 584 241 705 492 13 13 60 819 927 203 Ov 699 552

inches 26-1/4 27-1/4 28-3/8 12-1/2 30-3/4 18 1/2 1/2 2-1/4 35-1/4 38 8 Rd 33 27-1/4

mm 667 692 721 318 781 457 13 13 57 895 965 203 Rd 838 692

inches 34-1/2 35-1/2 36-5/8 12-1/2 30-3/4 18 1/2 1/2 2-1/4 35-1/4 38 10 Ov 41-1/4 35-1/2

mm 876 902 930 318 781 457 13 13 57 895 965 254 Ov 1048 902

inches 34-1/2 35-1/2 36-5/8 12-1/2 30-3/4 18 3/4 1/2 2-1/4 35-1/4 38 10 Ov 41-1/4 35-1/2

mm 876 902 930 318 781 457 19 13 57 895 965 254 Ov 1048 902

inches 40 41 42-1/8 12-1/2 30-3/4 19-3/8 3/4 1/2 7/8 35-1/4 38 12 Ov 46-3/4 41

mm 1016 1041 1070 318 781 492 19 13 22 895 965 305 Ov 1187 1041

inches 45-1/2 46-1/2 47-5/8 12-1/2 30-3/4 18 3/4 1/2 2-1/4 35-1/4 38 12 Ov 52-1/4 46-1/2

mm 1156 1181 1210 318 781 457 19 13 57 895 965 305 Ov 1327 1181

100

125

ABSize

350

400

150,

175

200,

225

250

300

CDEF WXGH J K

Form I-XE/CRGB/RPB, Page 4

4. Dimensions (cont'd)

86-11/16 (2202)

Blower

Cabinet Furna e

Airflow

Field Control

Wiring

Entran e

39-3/16*

(995)

Optional

Downturn

Plenum

Cabinet

38-1/8*

(968)

Field Wiring

(line voltage)

Gas Curb Cap

38-5/8 (981)

4-3/32

(104) 19-1/2

(495)

19-1/2

(495)

85-13/16 (2180)

Optional

Return

Air Inlet

Verti al

Dis harge

1-1/32

(26)

4-1/4

(108) 4-1/4

(108)

Left Side View with Verti al Dis har

Front View with

Opt ional Verti al Dis harge

(Downturn Plenum Option AQ5 or AQ8)

4-3/32

(104)

5 (127)

19-1/2

(495)

4-5/8

(117)

31-11/32

(796)

43-17/32 (1106)

S reened

Outside

Air Hood -

Option AS2

5 (127)

19-1/2

(495) Blower

Cabinet

1-1/32 (26) 61-3/8 (1559)

Control Wiring

Entran e

Furna e

Airflow

8-1/2(215)

11-1/4(286)

(457)

3/4(19)

39-3/16*

(995)

Curb Cap

Gas

Field Wiring

(line voltage)

61-7/8 (1572)

38-1/8**

(968)

3/4(19) 3/4(19)

Left Side View with Horizontal Dis harge Front View with

Standard Horizontal Dis harge

NOTES:

*Height from top of

cabinet to top of curb

cap.

**Height from top of

cabinet to bottom of

cabinet side.

*** If system has a cooling

coil cabinet, add length

dimension on page 6 for full

system length.

**** The two-position

discharge dampers in

Option AQ8 fit in the

discharge air opening. The

damper motor fits inside the

downturn plenum cabinet.

For dimensions with

downturn plenum cabinet

with a cooling coil cabinet,

see page 6.

FIGURE1B-

Dimensions,

Outdoor/

Gravity-

VentedModel

SeriesCRGB

Vent Cap Gas Connection

I.D. Height Extension Natural Propane

inches 28-5/8 17-3/8 25-7/8 12-1/2 6 9 None 1/2 1/2

mm 727 441 657 318 152 229 None 13 13

inches 28-5/8 17-3/8 25-7/8 15-1/4 8 11-1/2 None 1/2 1/2

mm 727 441 657 387 203 292 None 13 13

inches 34-1/8 22-7/8 31-3/8 20-3/4 8 11-1/2 None 1/2 1/2

mm 867 581 797 527 203 292 None 13 13

inches 39-5/8 28-3/8 36-7/8 26-1/4 10 15 None 1/2 1/2

mm 1006 721 937 667 254 381 None 13 13

inches 47-7/8 36-5/8 45-1/8 34-1/2 10 15 None 1/2 1/2

mm 1216 930 1146 876 254 381 None 13 13

inches 47-7/8 36-5/8 45-1/8 34-1/2 10 15 None 3/4 1/2

mm 1216 930 1146 876 254 381 None 19 13

inches 53-3/8 42-1/8 50-5/8 40 12 14-1/8 plus 12 3/4 1/2

mm 1362 1070 1286 1016 305 359 plus 305 19 13

inches 58-7/8 47-5/8 56-1/8 45-1/2 12 14-1/8 plus 12 3/4 1/2

mm 1470 1210 1426 1156 305 359 plus 305 19 13

Standard Horizontal Air Inlet 19-1/2 (495) x B

Optional Return Air Opening (bottom) 19-1/2 (495) x B

Standard Horizontal Discharge Air Opening 18 (457) x D

Optional Vertical Discharge Air Opening(Option AQ5 or AQ8 Downturn Plenum****) 19-1/2 (495) x B

**** for downturn plenum with coolingcoil cabinet, see page 6.

75,

100

125

175

225

250

300

350

CRGB,

HCRGB

Model

Series

Air O

enin

Dimensions

Size ABC

400

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 5

86-11/16 (2202)

Blower

Cabinet

Furna e

Airflow

Field Control

Wiring

Entran e

39-3/16*

(995)

Optional

Downturn

Plenum

Cabinet

38-1/8**

(968)

Field Wiring

(line voltage)

Gas Curb Cap

38-5/8 (981)

4-3/32

(104) 19-1/2

(495)

19-1/2

(495) 85-13/16 (2180)

Optional

Return

Air Inlet

Verti al

Dis harge

1-1/32

(26)

4-1/4

(108) 4-1/4

(108)

Left Side View with Verti al Dis harge

Front View with

Opt ional Verti al Dis harge

(Downturn Plenum Option AQ5 or AQ8)

4-3/32

(104)

5 (127)

19-1/2

(495)

4-5/8

(117)

31-11/32

(796)

43-17/32 (1106)

S reened

Outside

Air Hood -

Option AS2

5 (127)

19-1/2

(495)

Blower

Cabinet

1-1/32 (26) 61-3/8 (1559)

Control Wiring

Entran e

Furna e

Airflow

Curb Cap

Gas

Field Wiring

(line voltage)

61-7/8 (1572)

38-1/8**

(968)

3/4(19) 3/4(19)

Left Side View with Horizontal Dis harge Front View with

Standard Horizontal Dis harge

3/4(19)

39-3/16*

(995)

(457)

11-1/4(286)

8-1/2(215)

FIGURE1C-

Dimensions,Outdoor/

Power-VentedModel

Series RPB

NOTES:

*Height from top of

cabinet to top of curb

cap.

**Height from top of

cabinet to bottom of

cabinet side.

*** If system has a cooling

coil cabinet, add length

dimension on page 6 for full

system length.

**** The two-position

discharge dampers in

Option AQ8 fit in the

discharge air opening. The

damper motor fits inside

the downturn plenum

cabinet. For dimensions

with downturn plenum

cabinet with a cooling coil

cabinet, see page 6.

Gas Connection

Natural Propane

inches 28-5/8 17-3/8 25-7/8 15-1/4 1/2 1/2

mm 727 441 657 387 13 13

inches 34-1/8 22-7/8 31-3/8 20-3/4 1/2 1/2

mm 867 581 797 527 13 13

inches 39-5/8 28-3/8 36-7/8 26-1/4 1/2 1/2

mm 1006 721 937 667 13 13

inches 47-7/8 36-5/8 45-1/8 34-1/2 1/2 1/2

mm 1216 930 1146 876 13 13

inches 47-7/8 36-5/8 45-1/8 34-1/2 3/4 1/2

mm 1216 930 1146 876 19 13

inches 53-3/8 42-1/8 50-5/8 40 3/4 1/2

mm 1362 1070 1286 1016 19 13

inches 58-7/8 47-5/8 56-1/8 45-1/2 3/4 1/2

mm 1470 1210 1426 1156 19 13

AirOpenings: Dimensions

Standard Horizontal Air Inlet 19-1/2 (495) x B

Optional Return Air Opening (bottom) 19-1/2 (495) x B

Standard Horizontal Discharge Air Opening 18 (457) x D

19-1/2 (495) x B

****for downturn plenum with cooling coil cabinet, see page 6.

Model Size AB

Optional Vertical Discharge Air Opening (with Option AQ5 or AQ8

Downturn Plenum****)

300

350

400

(H)-RPB

125

150, 175

200, 225

250

Form I-XE/CRGB/RPB, Page 6

7/8 (22) 7/8 (22)

2 (51)

Side View

DX Coil

Cabinet

Drain Pan

Outlet

(1 FPVC)

Su tion Line

Conne tion

(1-5/8 or 2-1/8)

14-1/2

(368)

6-5/8

(168)

F (Inside of Curb Cap)

E (Curb Cap Length)

Liquid Line

Conne tion Kno kouts

(alternate lo ations)

2-3/8

(60)

3-1/2(89)

3-1/4(83)

Bottom View

DX Coil

Cabinet

Coil

Header

Housing

Dimensions(inches ±1/8;mm± 3)

4. Dimensions (cont'd)

NOTE: For the length of a system with a cooling coil cabinet, see the

table on the left. Cooling coil cabinet is shipped separately and attached

in the field. See page 10 for roof curb dimensions.

Furnace Size 75, 100,

125 150,

175 200,

225 250,

300 350 400

inches 28-1/2 34 39-1/2 47-3/4 53-1/4 58-3/4

mm 724 864 1003 1213 1353 1492

inches 15-1/4 20-3/4 26-1/4 34-1/2 40 45-1/2

mm 387 52 667 876 1016 1156

inches 25-7/8 31-3/8 36-7/8 45-1/8 50-5/8 56-1/8

mm 657 797 937 1146 1286 1426

inches 37-1/8 42-5/8 48-1/8 56-3/8 62 67-3/8

mm 943 1083 1222 1432 1575 1711

inches 40 45-5/8 51 59-3/8 64-7/8 70-3/8

mm 1016 1159 1295 1508 1648 1788

inches 64 69-5/8 75 83-3/8 88-7/8 94-3/8

mm 1626 1768 1905 2118 2257 2397

inches 38-1/8 43-5/8 49-1/8 57-3/8 63 68-3/8

mm 968 1108 1248 1457 1600 1737

inches 62-1/8 67-5/8 73-1/8 81-3/8 87 92-3/8

mm 1578 1718 1857 2067 2210 2346

inches 19-1/2 22-1/4 25 29-1/8 31-7/8 34-5/8

mm 495 565 635 740 810 879

inches 17-3/8 22-7/8 28-3/8 45-1/8 50-5/8 56-1/8

mm 441 581 721 1146 1286 1426

Without

Downturn

With

Downturn

Without

Downturn

With

Downturn

ChilledWaterCoolingCoilCabinetinOptionsAU2,AU11,AU12

Refrigerant

R22(DX)

Coil

Cabinet-

Options

AU3,AU13,

AU14

DownturnPlenumCabinet(factoryattachedto

eithertypeofCoolingCoilCabinet)

Front View

DX Coil

Cabinet with

Horizontal

Dis harge

(Option AU3)

Liquid Line

Conne tions

(7/8 or 1-3/8)

5-1/8 (130)

8 (203)

3/4

(19)

3/4

(19)

3/4

(19)

(457)

44-1/4

(1124)

12-1/2

(318)

16-1/4

(413)

11-1/4

(286)

Side View

Chilled

Water Coil

Cabinet

(Inside of Curb Cap)

(Curb Cap Length)

7/8 (22)

Supply

Conne tion

2-1/2 NPT

7/8 (22)

Return

Conne tion

2-1/2 NPT

Coil Vent

1/2 NPT

Coil Drain

Conne tion

1/2 NPT

Drain Pan

Conne tion

1 FPVC)

6-5/8

(168)

38-3/8

(975)

15-1/4

(387)

Front View

CW Coil

Cabinet with

Horizontal

Dis harge

(Option AU2)

44-1/4

(1124)

(457)

3/4

(19)

11-1/4

(286)

3/4

(19)

Side View

Optional

Downturn

Plenum

Cabinet

4-1/4

(108)

19-1/2 (495)

Dis harge Air

(Dis harge Air)

Front View

Optional

Downturn

Plenum

Cabinet

Side View

Optional

Downturn

Plenum

Cabinet

4-1/4

(108)

4-1/4

(108)

Discharge Damper Note: Optional two-position discharge dampers

in Option AU12 or AU14 fit in the discharge air opening. The

damper motor fits inside the downturn cabinet. See field wiring

instructions in Paragraph 36.

FIGURE1D-

OptionalCooling

CoilCabinetswith

DXorChilled

WaterCoil, with

orwithout

DownturnPlenum

Cabinet(Applies

toOutdoor

Models)

inches mm inches mm inches mm inches mm

75, 100, 125 29-1/8 740 37-1/8 943 98-1/2 2502 121-5/8 3069

150, 175 34-5/8 879 42-5/8 1083 104 2642 127-1/2 3229

200, 225 40-1/8 1019 48-1/8 1222 109-1/2 2781 132-5/8 3369

250, 300 47-1/8 1197 55-1/8 1400 117-3/4 2991 140-7/8 3578

350 53-3/8 1356 61-3/8 1559 123-3/8 3134 146-1/2 3721

400 58-7/8 1495 66-7/8 1698 128-3/4 3270 151-7/8 3858

Model

Series

CRGB and

RPB Size

w/Cooling

Coil Cabinet

w/Downturn

w/Chilled

Water Coil

Cabinet

Width of Cabinets (not

curb )Length of All System

Cabinets (not curb )

w/DX Coil

Cabinet

w/Cooling

Coil Cabinet

only

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 7

5. Clearances

Provide clearance to combustibles as shown in the table. Clearance to

combustibles is defined as the minimum distance from the heater to a

surface or object that is necessary to ensure that a surface temperature

of 90°F above the surrounding ambient temperature is not exceeded.

Clearance is also required to sides of furnace for combustion air space

and for convenient installation and burner control system service.

6. Combustion Air Requirements

6A. Indoor, Gravity-Vented Models XE/HXE

These furnaces are designed to take combustion air from the space in

which the furnace is installed. The air that enters into the combustion

process is vented to the outdoors. Sufficient air must enter the equip-

ment location to replace the air exhausted through the vent system.

Modern construction methods involve the greater use of insulation,

improved vapor barriers and weather-stripping, with the result that

buildings generally are much tighter structurally than they have been in

the past. The combustion air supply for gas-fired equipment can be

affected by these construction conditions because infiltration that would

have existed in the past may not be adequate. Extensive use of exhaust

fans aggravates the situation. In the past the filtration of outside air

assumedin heat loss calculations (oneair change per hour)was assumed

to be sufficient. However, current construction methods may now re-

quire the introduction of outside air through wall openings or ducts.

Requirementsfor combustionair andventilation airdepend uponwhether

the unit is located in a confined or unconfined space. An "unconfined

space" is defined as a space whose volume is not less than 50 cubic feet

per 1000 BTUH of the installed appliance. Under all conditions, enough

air must be provided to ensure there will not be a negative pressure

condition within the equipment room or space. A positive seal must be

madein all return-airconnections and ducts.Even a slightleak can create

a negative pressure condition in a confined space and affect combustion.

WARNING:Thesegravity-vented,indoorfurnaces

aredesignedtotakecombustionairfromthespace

inwhichthefurnaceisinstalledandarenotdesigned

for connection to outside combustion air intake

ducts. Use of outside air ducts voids the warranty

andcouldcause hazardous operation.See Hazard

Levels, page 2.

Indoor, Gravity-Vented Furnace Located in a

Confined Space

Do not install a unit in a confined space without providing wall open-

ings leading to and from the space. Provide openings near the floor and

ceiling for ventilation and air for combustion as shown in FIGURE 2,

depending on the combustion air source as noted in Items 1, 2 and 3.

Add total BTUH of all appliances in the confined space and divide by

figures below for square inch free area size of each (top and bottom)

opening.

1.Air from inside the building - openings 1 square inch free area per

1000 BTUH. Never less than 100 square inches free area for each open-

ing.See (1) inFIGURE 2.

2.Airfromoutsidethroughduct- openings 1 square inch free area per

2000 BTUH. See (2) in FIGURE 2.

3.Air direct from outside - openings 1 square inch free area per 4000

BTUH. See (3) in FIGURE2.

NOTE: For further details on supplying combustion air to confined

space, see National Fuel Gas CodeANSI Z223.1a (latest edition) 5.3.3.

6B. CombustionAir for Gravity-Vented,

Outdoor Model Series CRGB

Combustion air enters through the screened air intakes located in the

furnace section access doors.

6C. Combustion Air for Power-Vented,

Outdoor Model

Series RPB

The combustion air and flue gas

openings are carefully designed

screened openings located on the

side of the unit just above the con-

trol access panel. Location of the

flue opening directly above the air

intakeis designed todiscourage re-

circulation of combustion prod-

ucts.See FIGURE3.

6D. Chlorine -All Models

The presence of chlorine vapors in the combustion air of gas-fired heat-

ing equipment presents a potential corrosion hazard. Chlorine will,

when exposed to flame, precipitate from the compound, usually freon

or degreaser vapors, and go into solution with any condensation that is

present in the heat exchanger or associated parts. The result is hydro-

chloricacid which readily attacks allmetals including 300grade stainless

steel.

Care should be taken to separate these vapors from the combustion

process. This may be done by wise location of the furnace with regard

toexhausters orprevailing wind direction. Remember, chlorineis heavier

than air. This fact should be kept in mind when determining installation

locations of heating equipment and building exhaust systems.

7. Suspending/Mounting

7A. Suspending/Mounting Indoor, Gravity-

Vented Models XE/HXE

Location - Before suspending the furnace, check the supporting struc-

ture to verify that it has sufficient load-carrying capacity to support the

weight of the unit.

Approximate Net Weight - Indoor Furnaces

Size 75-100 125 150-175 200-225 250-300 350 400

lbs 233 295 332 386 494 515 576

kg 106 134 151 175 224 234 261

WARNING:Avoidinstallingaunitinanextremely

draftyarea.Extreme drafts can shortenthelifeof

theheat exchanger and/orcausesafety problems.

FIGURE2-

ConfinedSpace:A

spacewhosevolume

is less than 50

cubicfeet per1000

BTUHofthe

installedappliance

inputrating

Confined

Spa e

(1)

(2)

(3)

Flue Produ ts

Outlet

Combustion

Air Inlet

FIGURE3-CombustionAir

Intake,Power-Vented

Models

REQUIRED CLEARANCES

Sides Bottom

Model Series Top Control Opposite To

Combustibles To Non-

Combustibles

(H)XE 6"

(152mm) 6"

(152mm) 3" (76mm) 0

(H)RPB,

(H)CRGB 36"

(915mm) 6"

(152mm) 0 * 0

(H)CRGB 30' (9M)radius fromcenterofvent cap to obstructions

such as walls,parapets orcupolas

Width of

furnace

plus 6"

(152mm)

* When installed on a roof curb on a combustible roof, the roof area enclosed

within the curb must be either ventilated, left open, or covered with non-

combustible material which has an "R" value at least 5.0. See FIGURE8, page 10.

Form I-XE/CRGB/RPB, Page 8

Curb Cap Base

Outdoor systems are equipped with a load bearing curb cap which

forms an integral part of the unit. This curb cap has welded joints and

has a "skirt" which fits over a roof curb to provide a weatherproof

installation. Four holes are provided at the curb cap corners for lifting

the unit. These holes do not interfere with unit weatherproofing. The

curb cap is not designed to be placed directly on the roof surface.

The system may be mounted on an optional roof curb purchased with

the unit, a field-supplied roof curb, or field-supplied supports. If the

system has a downturn plenum and/or a bottom return air opening, a

roof curb is recommended to provide a weatherproof installation as well

as more workable clearances for ductwork. If the unit has an optional

cooling coil cabinet, the cabinet is shipped separately and attached in

the field. The cooling coil cabinet has a curb cap base that "matches and

extends" the length of the system base.

Mounting on Field-Supplied Supports (without a roof curb) - Prior

to installation, be sure that the method of support is in agreement with

all local building codes and is suited to the climate. If considering this

typeof installation insnow areas, it is recommended that the 4x4wooden

rails underneath the system be on cross-support structure at least 12"

higher than the roof surface (see support locations in FIGURE 6B).

Whether the supports are being mounted directly on the roof or being

placed "up" on additional structure, the horizontal length of the system

should be supported by two 4x4 treated wooden rails. Cut the rails to

the appropriate length (Dimension "A") in FIGURE 6A. (NOTE: Al-

though dimensions are included for units with a downturn plenum cabi-

net, it is strongly recommended that a full roof curb be used on an

installation with a downturn plenum cabinet and/or a bottom return air

duct.)

Space the 4x4 wooden rails (See "B" Dimension, FIGURE 6A) so that

the curb cap "skirt" will fit over the edge of the boards with the rails

setting inside the horizontal length of the curb cap.

If the rails are being laid directly on the roof, position them as shown in

FIGURE6A. Set the system on the rails, leaving the "ends" underneath

open for ventilation.

WARNING: Unit must be level for proper

operation.Donotplace oraddadditionalweightto

a suspended unit. See Hazard Levels, page 2.

Suspending Furnaces

These indoor, packaged furnace/blower systems have four-point sus-

pension. See hanger dimensions in Paragraph 4, FIGURE 1A.At each

suspension point, the unit is factory-equipped with a free-turning, fe-

male, 1" (NPT) pipe hanger. Suspend by connecting the pipe hanger to

a 1" threaded pipe. See the suspension method on the left in FIGURE4.

As an alternative method, the factory-installed pipe hanger may be

removed and the heater suspended as illustrated on the right in FIG-

URE4.

Standard Assembly

Installer Repla ed Assembly

1 Pipe Flange Washer Nut Assembly

1 Pipe

Threaded

So ket

Washer Nut

Assembly

3/8 Rod

(Standard

Assembly

Removed)

A ess through

the side panel

Heater Top

FIGURE5-SupportLocationsforIndoorSystems

7B. Mounting Outdoor Model Series CRGB

and RPB

Rigging-Lifting holes are providedfor rigging. Use spreaderbars when

lifting to prevent chains or cables from damaging the unit. If the unit is

being mounted on a roof curb, apply caulking to the roof curb prior to

liftingthe unit to theroof and settingit on the curb.See FIGURE8,page

10.

If the system includes an outside air hood and/or a shipped-separate

cooling coil cabinet, attach them after the unit is in place.

If the system includes a cooling coil cabinet, the cooling coil cabinet

must be lifted to the roof separately, set on the roof curb or supports,

and attached to the furnace.

WARNING: Do not support an indoor/gravity-

vented system with four corner support legs. The

systemrequireshorizontalsupport atcabinetjoint

as illustrated in FIGURE 5. Bottom clearance to

combustiblesmustbe observed.

7A. Suspending/Mounting Indoor, Gravity-

Vented Models XE/HXE (cont'd)

Location - When selecting a location for an outdoor installation, posi-

tion the unit so that the air inlet will not be facing into the prevailing

wind.

When the unit is mounted on a roof over 20 ft (6 M) high, has parapet

walls or obstructions within 30 ft (9.1M), or is subject to winds over 25

mph, installation of a power-vented unit (Model Series RPB) is recom-

mended.

Blower Se tion

Furna e

Se tion

Airflow

Support the unit at ea h end and where the blower abinet and

furna e se tion join. Support at abinet joint must extend

horizontally supporting both se tions.

FIGURE4-SuspensionMethods

Mounting Indoor Furnaces

Indoor packaged systems require six support locations. See FIGURE5.

All supports must be non-combustible.

Size 75,100 125 150,175 200,225 250,300 350 400

CRGB lbs 439 472 510 529 573 624 655

Series kg 199 214 231 240 260 283 297

RPB lbs -- 482 520 534 588 630 662

Series kg -- 219 236 242 267 286 300

Approximate NetWeight (lbs/kg)-Optional Cooling Coil Cabinet

Size 150,175 200,225 250,300 350 400

DX lbs 464 551 661 753 848

kg 269 250 300 342 385

DX with lbs 593 689 813 914 1018

Downturn kg 269 313 369 415 462

Chilled lbs 457 544 654 746 841

Water kg 207 247 297 338 381

lbs 586 682 806 907 1011

kg 266 309 366 411 459

Approximate Net Weight (lbs/kg) - Outdoor Systems

(blower andfurnace sections only)

75,100, 125

377

167

490

222

(includes approximate weight of a coil with 12fpi)

171

497

225

369

Chilled

Water with

Downturn

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 9

FIGURE6A-MountingSupportDimensions(inches/mm)

4x4 Treated Lumber

Leave both

ends open

for ventilation.

Blower

Cabinet

Furna e

Se tion

Field

Supplied

Du t

4x4 Treated

Lumber = Cross Support Lo ations

Field

Supplied

Du t

FIGURE6B-Cross-SupportLocations

The field-supplied, weather-resistant cross-support structure must be

adequate for the weight of the system (including air conditioning coil if

applicable), and all cross-supports should run the entire width of the

system supporting the 4x4 wooden rails at the recommended locations.

If the treated wooden rails are not being placed directly on the roof

surface, cross-supports should be placed underneath the rails at the

ends of the unit and at all cabinet "joints" (between the blower cabinet

and the furnace section; between the furnace and the optional downturn

plenum or coil cabinet; and between a coil cabinet and a downturn

plenum).See FIGURE6B.

Mounting on a Roof Curb - Whether using an optional roof curb

available with the system or a field-supplied curb, the curb must be

secure, square and level. The top surface of the roof curb must be

caulked with 1/4" x 1-1/4" sealant tape or two 1/4" beads of suitable

sealant. The unit must be sealed to the curb to prevent water leakage

into the curb area due to wind blown rain and capillary action. Except

for the curb assembly details which are specific to the optional roof

curb available with the system, the information and requirements in

this section apply to all curbs. See FIGURE 8, page 10, and the curb

installation instructions below.

FIGURE7-Duct Opening DimensionsinRelationtoRoof

CurbOption-inches(mm)

1-5/8

(41)

1-5/8

(41)

1-5/8 (41)

19-1/2

(495)

19-1/2

(495)

Return

Duct

Supply

Duct

Roof Curb

1-5/8

(41)

1-5/8

(41)

•1-5/8" (41mm) is the measurement from duct opening to

inside edge of roof curb.

• Duct openings should be 1" larger than the duct size for

installation clearance.

RoofCurbAssemblyandInstallationInstructions(Referto

FIGURE8,page10)

Curbs are shipped unassembled. Field assembly and mounting on the

roof are the responsibility of the installer.All required hardware neces-

sary to complete the assembly is supplied.

Before installing roof curb, verify that the size is correct for the

system being installed.

1. Position curb cross rails and curb side rails as illustrated in

FIGURE 8, page 10. If there are two side pieces to a side, fasten

them with splice plates and hardware as illustrated in the splicing

detail drawing. Join the corners as illustrated in the corner detail.

2. Check the assembly for squareness. Adjust the roof curb so that

the diagonal measurements are equal within a tolerance of + or -

1/8" (3mm).

3. Level the roof curb. To ensure a good weather tight seal between

the curb cap and the roof curb, the roof curb must be leveled in

both directions with no twist end to end. Shim level as required

and secure curb to roof deck before proceeding with flashing.

4. Install field-supplied flashing.

5. Before placing the unit into position, apply furnished 1/4" x

1-1/4" foam sealant tape to top surface of curb, making good butt

joint at corners. The unit must be sealed to the curb to prevent

water leakage into the curb area due to blown rain and capillary

action.

Model G

Series HWith Downturn w/Cooling Coil Cabinet

CRGB and Plenum, Option w/Downturn, Options

RPB Sizes AQ5 or AQ8 AU 11, 12, 13, or 14

75, 100, 17-3/8" 38-5/8" 75-31/32"

125 441mm 981mm 1930mm

150, 175 22-7/8 38-5/8 81-15/32

581mm 981mm 2069mm

200, 225 28-3/8 38-5/8 86-31/32

721mm 981mm 2209mm

250, 300 36-5/8 38-5/8 95-1/4

930mm 981mm 2419mm

350 42-1/8 38-5/8 100-3/4

1070mm 981mm 2559mm

400 47-5/8 38-5/8 106-1/4

1210mm 981mm 2699mm

Bottom Duct Connections - The blower section and optional down-

turn plenum have duct flanges for connection to return air and supply

air ducts. Duct opening sizes and curb spacing shown in FIGURE 7 is

for currently manufactured curbs that are available from the system

manufacturer.

Standard

Heater

and

Blower

Package

With Factory-

Installed

Downturn

Plenum

Cabinet

(Option AQ)

With

Shipped-

Separate

Cooling

Coil

Cabinet

(Option AU)

With Shipped-

Separate

Cooling Coil

Cabinet with

Downturn

Plenum

(Option AU)

All

Configurations

"A" "A" "A" "A" "B"

75, 100,

125 60-5/8" 84-9/16" 98-3/8" 122-1/4" 24-5/16"

150, 175 60-5/8" 84-9/16" 103-7/8" 127-7/8" 29-13/16"

200, 225 60-5/8" 84-9/16" 109-3/8" 133-3/8" 35-5/16"

250, 300 60-5/8" 84-9/16" 117-5/8" 141-5/8" 43-9/16"

350 60-5/8" 84-9/16" 123-1/8" 147-1/8" 49-1/16"

400 60-5/8" 84-9/16" 128-5/8" 152-5/8" 54-1/2"

75, 100,

125 1540mm 2148mm 2499mm 3105mm 618mm

150, 175 1540mm 2148mm 2638mm 3248mm 757mm

200, 225 1540mm 2148mm 2778mm 3388mm 897mm

250, 300 1540mm 2148mm 2988mm 3597mm 1106mm

350 1540mm 2148mm 3127mm 3737mm 1246mm

400 1540mm 2148mm 3267mm 3877mm 1384mm

Model Series CRGB

and RPB Sizes

Form I-XE/CRGB/RPB, Page 10

*Optional

Downturn Plenum

Furna e

Blower

Cabinet

Curb

Cap

1-7/8

(48mm)

Roof

Curb

16 (406mm)

1-7/8

(48mm)

Return

Du t

Supply

Du t

1-7/8(48mm)

1-1/2

(38mm)

Lift Holes

(4 orners)

** Cand Dare roof opening

dimensions. ***Field installed means that the cooling coil cabinet with or without the downturn is factory assembled

and shipped separately. The roof curb is sized to accommodate the complete length of the system. The

shipped-separate cooling coil cabinet with or without a downturn must be lifted to the roof separately

from the packaged system, set on the roof curb, and attached to the furnace section (see instructions

beginningon page 38).

16

(406mm)

1-7/8(48mm)

4

(102mm)

2 x 6 Wood Nailer

1-1/2 x 3 lb

Fiberglass

Flashed b the

installer (flashing must

be under lip of curb)

Lag Screw

Cap

Screws

For top 4 holes (2 on

each side) at both joints,

from inside the curb insert

(4) 5/16 1 lag screws

and (4) 5/16 lockwashers.

For bottom 4 holes (2 on each side) at both

joints, from outside of the curb insert (4)

5/16-18 3/4 long cap screws. Attach with

5/16 lockwashers and 5/16-18 he nuts.

(Inside

of Curb)

7B. Mounting Outdoor Models on a Roof Curb (cont'd)

Curb Cap

Counter Flashing

(b installer)

Cant Strip

(b installer)

MUST be sealed

between curb cap

and roof curb

2 x 6

Wood

Nailer

Insulation

16

(406 mm)

Curb Height

Cabinet

Curb Cap Skirt

Weld, bolt, or lag screw curb to deck structure.

Roof Curb

Roofing Felts

(b others)

IMPORTANT: Top surface of curb MUST be sealed. See instructions above.

* Illustration is shown with an Option AQ5 or AQ8 downturn plenum. The system can have a

variety of configurations which affect installation.

• If the system does not have a downturn plenum, the discharge is horizontal.

• Downturn plenum Options AQ5 and AQ8 are factory installed to be lifted to the roof

and set on the roof curb as part of the packaged system.

• If the system has an Option AU2 or AU3 cooling coil cabinet, the discharge is horizontal. If

the system has an AU11, AU12, AU13, AU14 cooling coil cabinet, there is a downturn

plenum with vertical discharge. Options AU2, AU3, AU11, AU12, AU13, and AU14 are

not factory installed. Options AU2, AU3, AU11, AU12, AU13, and AU14 must be

lifted to the roof separately from the packaged system, set on the roof curb, and

attached to the furnace.

FIGURE8-

OptionalRoofCurb Splicing

Detail

Corner Detail

Curb Section

Typical

Curb

Detail

IMPORTANT: Area enclosed

by the roof curb must comply with

clearance to combustible materials.

If roof is constructed of combustible

materials, area within curb must be either ventilated, left open, or covered

with non-combustible material which has an "R" value of at least 5.0. If

area within curb is left open, higher radiated sound levels may result.

RoofCurbDimensions(inches)

Size 75, 100,

125 150, 175 200, 225 250, 300 350 400 Size 75, 100,

125 150, 175 200, 225 250, 300 350 400

A60-5/8 60-5/8 60-5/8 60-5/8 60-5/8 60-5/8 A98-3/8 103-7/8 109-3/8 117-21/32 123-5/32 128-21/32

B24-5/16 29-13/16 35-5/16 43-9/16 49-1/16 54-1/2 B24-5/16 29-13/16 35-5/16 43-9/16 49-1/16 54-1/2

C** 56-15/16 56-15/16 56-15/16 56-15/16 56-15/16 56-15/16 C** 94-5/8 100-1/8 105-5/8 113-29/32 119-13/32 124-29/32

D** 20-9/16 26-1/16 31-9/16 39-13/16 45-5/16 50-13/16 D** 20-9/16 26-1/16 31-9/16 39-13/16 45-5/16 50-13/16

A84-9/16 84-9/16 84-9/16 84-9/16 84-9/16 84-9/16 A122-3/8 127-7/8 133-3/8 141-21/32 147-5/32 152-21/32

B24-5/16 29-13/16 35-5/16 43-9/16 49-1/16 54-1/2 B24-5/16 29-13/16 35-5/16 43-9/16 49-1/16 54-1/2

C** 80-13/16 80-13/16 80-13/16 80-13/16 80-13/16 80-13/16 C** 118-5/8 124-1/8 129-5/8 137-29/32 143-13/32 148-29/32

D** 20-9/16 26-1/16 31-9/16 39-13/16 45-5/16 50-13/16 D** 20-9/16 26-1/16 31-9/16 39-13/16 45-5/16 50-13/16

Option CJ4 - Roof Curb for (H)CRGB and (H)RPB with Field-

Installed*** Cooling Coil Cabinet Option AU2 or AU3

Option CJ5 - Roof Curb for (H)CRGB and (H)RPB with

ield-

Installed*** Cooling Cabinet and Downturn Plenum Option AU11,

AU12, AU13, or AU14

Option CJ2 - Roof Curbfor (H)CRGB and (H)RPB with Factory-

Installed Downturn Plenum Option AQ5 or AQ8

Option CJ1 - Roof Curbfor (H)CRGB and(H)RPB

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 11

RoofCurbDimensions(mm)

8. Venting

8A. Gravity-Vented

Indoor Models

XE/HXE

DANGER:Failuretoprovideproperventingcouldresultindeath,seriousinjury,and/orpropertydamage.This

furnacemustbeinstalledwithaventconnectionandproperventtotheoutsideofthebuilding.Installventin

accordancewithPart7,VentingofEquipment,oftheNationalFuelGasCode,ANSIZ223.1(latestedition)or

applicableprovisionof national, state orlocalcodes.ACanadianinstallationmustbeinaccordancewiththe

CSAB149.1andB149.2,InstallationCodeforGasBurningAppliancesandEquipment,andapplicablelocal

codes.Also,followventingrecommendationslistedbelow.

Safeoperationofanygravity-ventedgas-firedequipmentrequiresaproperlyoperatingventsystem,correct

provisionforcombustionair(SeeParagraph6),andregularmaintenanceandinspection.SeeHazardLevels,

page 2.

Venting Requirements - Indoor Models

1. Provide a minimum clearance of 18" (457mm) between the drafthood

relief opening and any obstruction. Do not expose the relief opening to

wind drafts from any source such as from an overhead door or adjacent

air handling equipment.

2. The unit is equipped with a built-in draft diverter, consequently an

external draft diverter MUSTNOT be installed in the vent connector or

**, *** See Notes under chart on the bottom of previous page.

Model Size 75 100 125 150, 175 200, 225 250, 300 350, 400

Flue Collar

Diameter/Configuration 5"

Round 6"

Round 7"

Oval 8"

Round 10"

Oval 12"

Oval

Furnaces have

the following

vent outlet sizes:

any internal alterations made. Do not install a manual damper or

other fixed restriction in the vent connector.

3. Vent pipe should be a minimum of 26-gauge galvanized steel or

other noncorrosive material. Double-wall, Type B vent is recom-

mended. Where it is necessary to run the vent pipe through an

exterior wall of combustible materials, a suitable thimble must be

used. The vent pipe shall have a clearance of at least six inches

(152mm) from combustible materials, or as is specified by the

double-wall vent pipe manufacturer.

4. The horizontal vent pipe run should have a uniform rise of at

least 1/4" per foot (6.3mm per 305mm) of horizontal run in the

direction of discharge. The length of the lateral run must not

exceedlengths in the vent tables of the National FuelGas Code or

the Canadian Installation Code for Gas BurningAppliances. See

TABLES 1 and 2 on the right.

5. Lateral runs should be supported every six feet (1.8M) using a

non-combustible material, such as strap steel or chain. Do not

rely on the drafthood or heater for support of either horizontal or

vertical vent pipe.

6. Vent connectors serving Category I heaters (heater with non-

positive vent pressure and with a vent gas temperature at least

140°F above its dewpoint) shall not be connected into any por-

tion of a mechanical draft system operating under positive pres-

sure.

7. Where it is necessary to use a long run of vent pipe, or where the

vent pipe is exposed to cold air, condensation within the pipe

may occur. There are two ways to overcome or eliminate this

problem.

(a) Prevent condensation by insulating the pipe so that the tem-

perature of the flue products never drops below 250°F.

TABLE1 - Maximum Horizontal Run for Double-Wall Type B

Connector andDouble-Wall Type B Vent

Vent Diameter

ft M ft M ft M ft M ft M ft M

6' (1.8M) 6 1.8 6 1.8 6 1.8 6 1.8 6 1.8 6 1.8

8' (2.4M) 8 2.4 8 2.4 16 4.9 16 4.9 16 4.9 16 4.9

10' (3.0M) 10 3.0 16 4.9 20 6.1 20 6.1 20 6.1 20 6.1

15' (4.6M) 16 4.9 16 4.9 30 9.1 30 9.1 30 9.1 30 9.1

20' (6.1M) 20 6.1 30 9.1 30 9.1 30 9.1 30 9.1 30 9.1

30' (9.1M) 20 6.1 40 12.2 40 12.2 40 12.2 40 12.2 40 12.2

10" 12"

Vertical

Height of

Vent 5" 6" 7" 8"

TABLE2 - Maximum Horizontal Run for Single-Wall Metal Pipe

Vent Diameter

ft M ft M ft M ft M ft M ft M

6' (1.8M) 20.620.620.620.620.620.6

8' (2.4M) 5 1.5 5 1.5 10 3.0 10 3.0 10 3.0 10 3.0

10' (3.0M) 5 1.5 10 3.0 15 4.6 15 4.6 15 4.6 15 4.6

15' (4.6M) 5 1.5 10 3.0 15 4.6 20 6.1 20 6.1 20 6.1

20' (6.1M) N.R. 10 3.0 15 4.6 20 6.1 20 6.1 20 6.1

10" 12"

Vertical

Height of

Vent 5" 6" 7" 8"

Size 75, 100,

125 150, 175 200, 225 250, 300 350 400 Size 75, 100,

125 150, 175 200, 225 250, 300 350 400

A1540 1540 1540 1540 1540 1540 A2499 2638 2778 2988 3128 3267

B618 757 897 1106 1246 1384 B618 757 897 1106 1246 1384

C** 1446 1446 1446 1446 1446 1446 C** 2403 2543 2683 2893 3033 3173

D** 522 662 802 1011 1151 1291 D** 522 662 802 1011 1151 1291

A2148 2148 2148 2148 2148 2148 A3108 3248 3388 3598 3738 3877

B618 757 897 1106 1246 1384 B618 757 897 1106 1246 1384

C** 2053 2053 2053 2053 2053 2053 C** 3013 3153 3292 3503 3643 3759

D** 522 662 802 1011 1151 1291 D** 522 662 802 1011 1151 1291

Option CJ4 - Roof Curb for (H)CRGB and (H)RPB with Field-

Installed*** Cooling Coil Cabinet Option AU2 or AU3

Option CJ5 - Roof Curb for (H)CRGB and (H)RPB with

ield-

Installed*** Cooling Cabinet and Downturn Plenum Option AU11,

AU12, AU13, or AU14

Option CJ2 - Roof Curbfor (H)CRGB and (H)RPB with Factory-

Installed Downturn Plenum Option AQ5 or AQ8

Option CJ1 - Roof Curbfor (H)CRGB and(H)RPB

Form I-XE/CRGB/RPB, Page 12

Top

Bottom

12

(305mm

)

2 (51mm)

3/8

(10mm)

Vent Cap

Vent Opening

Furna e Top

Vent Cap

Extension

Control Compartment

A ess Panel

FIGURE9B-Vent

CapInstallation

FIGURE9A-VentCap

Extension,P/N 20524

8B. Venting - Gravity-Vented, Outdoor Model

Series CRGB

The appropriate size of gravity vent cap is supplied with the furnace. The

gravity vent cap requires field installation.

WARNING: This gravity-vented furnace should be

located on a roof or slab with at least 30-foot (9M)

radius between the center of the vent cap and

obstructions such as walls, parapets or cupolas. See

Hazard Levels, page 2.

8A. Gravity-Vented Models XE/HXE (cont'd)

Venting Requirements - Indoor Models (cont'd)

(b) Use double-wall, Type B vent pipe which is recommended for the

reductionor elimination ofcondensate problems. Whereextreme condi-

tions are present and condensate is anticipated, install a trap for collect-

ing condensate.

8. The vent connection may be made into a suitable permanent chimney

or into a gas vent. The effective area of the vent con-nector, gas vent, or

chimney when connected to a single appliance shall not be less than the

area of the appliance drafthood outlet or in accordance with approved

venting methods. The effective area of the gas vent or chimney when

connected to more than one appliance shall not be less than the area of

the largest vent connector plus 50% of the areas of additional vent

connectors or in accordance with approved venting methods.

Minimum permissible height of the vertical vent is five feet (1.5M)

providing no horizontal vent pipe connector is used. If a horizontal

vent connector is necessary, consult TABLES 1 or 2 or the National

Fuel Gas Code or the Canadian Installation Code for Gas Burning

Appliances, for the maximum permissible length of a horizontal pipe

run (vent connector) for a given vertical height of gas vent.

The gas vent or chimney should extend at least three feet (.9M) above

the highest point where it passes through a roof of a building and at

least two feet (.6M) higher than any portion of a building or obstruc-

tion within a horizontal distance of ten feet (3M). A suitable weather

cap should be installed on the end of the vent pipe to prevent rain or

snow from entering the open end.

9. If the heater is installed in a space served by a large exhaust fan, be sure

that the exhaust fan does not affect the operation of the heater or the

satisfactory venting of its products of combustion.

If a negative pressure exists, as evidenced by a downdraft, a factory-

designed mechanical motor driven venter (Option CA) should be in-

stalled. In severe negative pressure conditions, makeup air equipment

may be necessary.

Optional Power Venting (Option CA)

To install a gravity-vented furnace in an area where horizontal venting is

required or where negative building pressure inhibits gravity venting, in-

stall an optional power venter (Option CA). Use only a power venter

provided by the furnace manufacturer and carefully follow the instruc-

tions included in the optional venter package. Use the venter adapter

supplied to connect the power venter to the heater. Do not install the

power venter without the venter adapter.

With an Option CA power venter installed, the furnace may be vented

either horizontally or vertically. Do not exceed the maximum vent lengths

shown in the table below. Minimum vent length is 5 ft (1.5M).

Vent Cap Installation Instructions:

IMPORTANTREQUIREMENT

Forproperoperationofthe gravityvent cap, positionthe

holes so that the solid side panel of the cap will face the

controlcompartmentaccesspanelsideofthefurnace.See

FIGURE9B.

1) Furnaces that do not require a Vent Cap Extension

(H)CRGB Sizes 75- 300, align holes and attach the vent cap to the

furnace flue collar with sheetmetal screws. (SeeImportant Require-

ment above.)

2) Furnaces that require a Vent Cap Extension (packed inside

the vent cap) - See FIGURES 9A and 9B

(H)CRGB Sizes 350 and 400 require a 12" extension to raise the

vent cap above the top of the furnace.

a) Remove the extension from the inside of the cap.

b)Attach the extension to the furnace flue collar --

1) With 3/8" centerline clearance holes at the bottom, wrap

extension around flue collar on the top of the furnace.

2)Align holes in the extension with holes in the flue collar.

3) Secure with #10 1/2" sheetmetal screws.

c) Attach the vent cap to

the extension --

1) Position vent cap into

top of extension.

(See Important

Requirement

above)

2)Align holes and push

cap into extension.

3) Secure with 1/2"

sheetmetal screws.

Optional 4-foot (1.2M) Stack Extension for

Outdoor, Gravity Vent Models (Option ZZ)

Outdoor, gravity-vented furnaces that are factory-built with Option

ZZ are designed to release flue gases four feet (1.2M) above the top

of the furnace. A field-provided 4-ft (1.2M) vent extension must be

installed between the top of the furnace and the bottom of the vent

cap. (See FIGURE 9C). Furnaces with Option ZZ (factory-installed

restrictor plus field-provided 4-ft stack) may be installed adjacent to

fresh air inlet(s) when local code requires that release of flue gases be

above an adjacent fresh air inlet that is not part of the furnace.

75, 100, 125, 150 175 200 225 250 300 350 400

ft 100 75 50 35 30 15

M30 23151194.6

ft 100** 100** 100 92

M 30** 30** 30

Maximum* Vent Length (ft or M) for Furnace with Optional

Power Venter (Option CA)

Vent Pipe

Diameter

*Reduce the vent pipe lengths as follows for each item: 45° Elbow - 7ft

(2.1M); 90° Elbow - 15ft (4.6M); Reznor®or Breidert Vent Cap - 10ft (3M).

** If the venter outlet is 4", connect a taper-type "enlarger" to the vent

outlet when installing 6" vent pipe.

Model Size Vent Cap

Size Extension Required

75, 100 6"

125, 175 8" No

225, 250, 300 10"

350, 400 12" Yes (packed inside cap)

(H)CRGB

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 13

Optional Vertical Flue Discharge (Option CC3)

These power vented furnaces are certified with four feet (1.2M) of

vertical pipe attached as shown in FIGURES 11A and 11B. The dis-

tance is measured from the top of the unit to the bottom of the vent cap.

The option package includes the 5" vent cap, the adapter assembly and

the seal plate. The vent pipe and supports are field supplied. The

straight pipe connecting the furnace to the 90° elbow must be at

least 18" (457mm) in length.

Optional vertical vent piping provides compliance with local codes

that require either 10-ft (3M) horizontal or 4-ft (1.2M) vertical clear-

ance between the flue outlet and fresh air intake of the heating system

and/or the building.

FIGURE9C-OptionalStackExtensionappliesonlyto

FurnaceswithSuffix"Z"intheirModelNo.

Gravity Vent Cap

4 ft

(1.2M)

Three guy wires, spa ed 120°

apart, fastened to the vent

ap ollar and furna e top

with sheetmetal s rews.

8C. Venting - Power Vented, Outdoor Models

Locate power-vented furnaces so that flue discharge is not directed at

fresh air inlets.

Flue Gas and

CombustionAir

Openings

These screened openings are lo-

cated on the side of the furnace

just above the control access

panel.See FIGURE10.The po-

sitionof these openings discour-

agesrecirculation ofcombustion

products and provides for fur-

nace operation in all normal

weather conditions.

Flue Produ ts

Outlet

Combustion

Air Inlet

FIGURE11A-InstallationofAdapterforOptionalVertical

FlueDischarge (Option CC3,P/N45021)

5 Vent Cap,

P/N 110052

5 dia Flue Pipe

4

(1.2M)

5 dia

90° Elbow

18 (457mm) Straight Pipe

Oval Adapter Assy

Combustion Air Intake

Support angles for flue pipe.

Re ommended size is

1/2x1/2, 20 gauge

FIGURE11B-InstallationoftheVentCap(includedinthe

optionpackage)andthefield-suppliedPipingandSupports

Oval Adapter Assy,

PN/ 103025

Venter Seal Plate,

P/N 43446

9. Condensate Drain

9A. Indoor Models XE/HXE

Condensatecanform intheheat exchangeroffurnaces installedasmakeup

air units or when installed downstream from a cooling coil. Under these

conditions, a drain flange, Option CS1, may be installed on the furnace

bottom as shown in FIGURE 12. When using Option CS1, seal all

corners and the four square holes in the bottom pan edge.

9B. Outdoor Model Series CRGB and RPB

A hole is provided in all four corners of the furnace bottom to drain off

condensation to the outside of the curb cap to the roof.

FIGURE12-CondensateDrain,OptionCS1(P/N31765)

Bottom of the Furna e Casing

#10 x 1-1/4 Bolt and Nut

3/4 Pipe Waste Nut

Gasket

Seal holes in bottom pan. Terminate drain outside of

building. Periodic cleaning of the condensate collector and

disposal system is required.

1) Remove and discard

the louvered

dischargegrill.

2) Using venter seal

plate as a template,

drill holes.Attach

venter seal plate and

oval adapter

assembly with 3/8"-

10 sheetmetal

screws.

FIGURE10-FlueOutlet,

Power-VentedFurnaces

10. Duct Connections

Requirements and Suggestions for Connecting

and Installing Ducts

•Type of Ductwork - The type of duct installation to be used de-

pends in part on the type of construction of the roof (whether wood

joist, steelbar joist, steel truss, pre-cast concrete) and the ceiling

(whether hung, flush, etc.).

•Ductwork Material - Rectangular duct should be constructed of

not lighter than No. 26 U.S. gauge galvanized iron or No. 24 B & S

gaugealuminum.

•Ductwork Structure - All duct sections 24 inches or wider, and

over 48 inches in length, should be cross broken on top and bottom

and should have standing seams or angle-iron braces. Joints should

be S and drive strip, or locked.

Form I-XE/CRGB/RPB, Page 14

Heater Du t

A ess Panel

in Du t

6

(152mm)

10 (254mm)

U Channel

(See FIGURE 15.)

WARNING

This appliance is equipped for a maximum gas sup-

ply pressure of 1/2 psi, 3.5 kPa, or 14 inches water

column. Supply pressure higher than 1/2 psi re-

quires installation of an additional service regula-

tor external to the unit.

PRESSURE TESTING SUPPLY PIPING

Test Pressures Above 1/2 PSI: Disconnect the heater and manual

valve from the gas supply line which is to be tested. Cap or plug the

supply line.

Test Pressures Below 1/2 PSI: Before testing, close the manual

valve on the heater.

FIGURE14-ConnectingSupplyAirDuctto theFurnace

(1) Flanges on the furnace (heat exchanger) turn out as shown. (2)

Shape duct connection as shown - "U" on top and bottom; "L" on

sides. (3) Slide "U" channels over furnace top and bottom flanges

making connection. Form "U" channels to seal sides. Drill and lock

with sheetmetal screws.

Furna e

Du t

U Channel of

Light Gauge Metal

FIGURE15-

Install"U"

Channelon

SidesofDuct

Connection

11. Gas Piping and Pressures

All piping must be in accordance with requirements outlined in the

National Fuel Gas CodeANSI/Z223.1a (latest edition) or CSA-B149.1

and B149.2 (See Paragraph 1). Gas supply piping installation should

conform with good practice and with local codes.

Duct furnaces for natural gas are orificed for operation with gas having

a heating value of 1000 (±50) BTUH per cubic ft. If the gas at the

installation does not meet this specification, consult the factory for

proper orificing.

•Bottom Duct/Furnace Connections - On outdoor models, insert

ducts from below roof deck through roof opening into the heater.

Form1" (25mm)flanges, foldover, and fasten with sheetmetalscrews

inside heater. Gain access to the unit by removing side panels from

the blower and downturn plenum sections. Ducts must be attached

and sealed to provide airtight connections.

•ReturnAirDuct/Furnace Connection - All return air ducts should

be attached and sealed to return air flanges to provide airtight con-

nection.

•Return Air Duct/Grill Size - Make certain that return air ducting

or grills have a free area equal to the return duct size connection.

18

(457mm)

3/4

(19mm)

3/4

(

19mm

)

FIGURE13-DuctConnection

Dimensions(inches/mm)for

HorizontalDischarge

(See Paragraph 4 for bottom duct connection sizes.)

inches mm

75, 100 12-1/2 318

125 15-1/4 387

150, 175 20-3/4 527

200, 225 26-1/4 667

250, 300 34-1/2 876

350 40 1016

400 45-1/2 1156

Size

•Through Masonry Walls - No warm air duct should come in con-

tact with masonry walls. Insulate around all air duct through ma-

sonry walls with not less than 1/2" (1" is recommended) of insula-

tion.

•Through Unheated Space - Insulate all exposed warm air ducts

passing through an unheated space with at least 1/2" (1" is recom-

mended) of insulation.

•DuctSupports- Suspend all ducts securely from adjacent buildings

members. Do not support ducts from unit duct connections.

•Duct Sizing - Proper sizing of the supply air ductwork is necessary

to ensure a satisfactory heating installation. The recognized author-

ity for such information is the Air Conditioning Contractors Asso-

ciation, 2800 Shirlington Road, Suite 300, Arlington, VA 22206

(www.acca.org). A manual covering duct sizing in detail may be

purchased directly from them.

CAUTION:Anexternalductsystemstaticpressurenotwithin

thelimitsshownontheratingplate,orimpropermotorpulley

orbeltadjustment,mayoverloadthemotor.SeeHazardLevels,

page2.

•Removable Panels - The ducts should have removable access pan-

els on both upstream and downstream sides of the furnace. These

openingsmust be accessible when thefurnace is inservice and should

be a minimum of 6" x 10" in size so smoke or reflected light may be

observed inside the casing to indicate the presence of leaks in the

heat exchanger. The covers for the openings must be attached in such

a manner as to prevent leakage. See FIGURE14.

•Horizontal Discharge Duct Length - On indoor, gravity-vented

Model XE, a minimum horizontal duct length of 18" (457mm) is

requiredat the furnace discharge before any vertical rise is made in

front of the drafthood relief opening. This is required to prevent

interference with the builtin drafthood. For all installations with a

horizontaldischarge, a minimumhorizontal duct run of 24" (610mm)

is recommended before turns or branches are made in the duct

system to reduce losses at the furnace outlet.

10. Duct Connections (cont'd)

Requirements and Suggestions (cont'd)

•Supply Air Duct/Furnace Horizontal Connection - The seal be-

tween the furnace and the duct must be mechanical. Duct connection

should be made with "U" type flanges on the top and bottom of the

connecting duct. Slide the duct over the flanges of the heater giving

an airtight fit. Provide "U" type channels for the other side flanges to

ensure tight joints. Use sheetmetal screws to fasten ducts and "U"

channels to the furnace flange. See FIGURES14 and 15.

CAUTION:Jointswheresupplyairductsattachtothefurnace

mustbesealedsecurelyto prevent airleakageinto drafthood

or burner rack area. Leakage can cause poor combustion,

pilotproblems, shortenheat exchangerlife andcause poor

performance.SeeHazardlevels, page2.

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 15

Sizing Gas

Supply Lines

Pipe joint compounds (pipe dope) shall be resistant to the ac-

tion of liquefied petroleum gas or any other chemical con-

stituents of the gas being supplied.

Install a ground joint union and manual shutoff valve upstream of

the unit control system, as shown in FIGURES 16 and 17. The

1/8" plugged tapping in the shutoff valve provides connection for

supply line pressure test gauge. The National Fuel Gas Code re-

FIGURE16-GasConnectionLocation,IndoorModel

Thermostat Wire Manual Shutoff Valve

with 1/8 NPT plugged

tapping must be installed

above unit asing.

Line Voltage

(Supply)

Jun tion

Box

To Gas Controls

and Burner

Ground

Joint

Union

Top View

Side View

4 (102mm)

2-3/32 (53mm)

5-5/8 (143mm)

6-7/8

(

175mm

)

7/8 (22mm) dia. 1-7/8 x 1-3/8 (48x35mm)

Minimum 1 (25mm) learan e between

heater a ess panel and elbow or fitting

Install a 1/8 NPT plug with tap

for test gauge immediately upstream

of the gas supply onne tion

Manual shutoff valve

Installer supplies

manual shutoff,

ground unions

and shaded piping

Gas Supply

Entran e

-3/4

(146mm)

Condensate

Weep Holes

FIGURE17-GasConnectionLocation,OutdoorModels

Installthe gassupplypiping

so that when the union is

disconnected,thesupplypipe

will not interfere with the

removal of the burner rack.

(The burner rack slides out

of the control side of the

furnace.)

Sizes Natural Propane Sizes Natural Propane

75-250 1/2" 1/2" 300-400 3/4" 1/2"

Gas Connection to Single-Stage Valve (Not Gas Supply LineSize)

Applies to all Models in this Manual

quires the installation of a trap with a minimum 3" (76mm) drip leg. Local

codes may require a minimum drip leg longer than 3" (76mm), typically 6"

(152mm).

After all connections are made, disconnect the pilot supply at the control

valve and bleed the system of air. Reconnect the pilot line and leak-test all

connections by brushing on a soap solution.

WARNING:All components of a gas supply system

must be leak tested prior to placing equipment in

service. NEVER TEST FOR LEAKS WITH AN

OPEN FLAME. Failure to comply could result in

personalinjury,propertydamageordeath.

Capacity of Piping

Cubic Feet per Hour based on 0.3" w.c. Pressure Drop

Specific Gravity for Natural Gas -- 0.6 (Natural Gas -- 1000 BTU/Cubic Ft)

Specific Gravity for Propane Gas -- 1.6 (Propane Gas -- 2550 BTU/Cubic Ft)

Length Diameter ofPipe

of 1/2" 3/4" 1" 1-1/4" 1-1/2" 2"

Pipe Natural Propane Natural Propane Natural Propane Natural Propane Natural Propane Natural Propane

20' 92 56 190 116 350 214 730 445 1100 671 2100 1281

30' 73 45 152 93 285 174 590 360 890 543 1650 1007

40' 63 38 130 79 245 149 500 305 760 464 1450 885

50' 56 34 115 70 215 131 440 268 670 409 1270 775

60' 50 31 105 64 195 119 400 244 610 372 1105 674

70' 46 28 96 59 180 110 370 226 560 342 1050 641

80' 43 26 90 55 170 104 350 214 530 323 990 604

90' 40 24 84 51 160 98 320 195 490 299 930 567

100' 38 23 79 48 150 92 305 186 460 281 870 531

125' 34 21 72 44 130 79 275 168 410 250 780 476

150' 31 19 64 39 120 73 250 153 380 232 710 433

175' 28 17 59 36 110 67 225 137 350 214 650 397

200' 26 16 55 34 100 61 210 128 320 195 610 372

Note: When sizingsupply lines, consider possibilities of future expansion and increased requirements.

Refer to National Fuel Gas Code for additional information on line sizing.

Manifold or Orifice Pressure Settings

Measuring gas valve outlet (manifold) pressure cannot be done until

the heater is in operation. It is included in the "Check-Test-Start"

section, Paragraph 30. The following instructions apply.

WARNING: Manifold gas pressure must never

exceed 3.5" w.c. for natural gas and 10" w.c. for

propanegas.

Form I-XE/CRGB/RPB, Page 16

Dis onne t

Alternate

Lo ation

Blower

Se tion

Servi e

Panel

Furna e

Servi e

Panel

Optional

Downturn

Plenum

Cabinet

Dis onne t

Alternate

Lo ation

Test Gauge

Conne tion

Gas

Maintain learan e for

burner ra k removal.

Ele tri

Supply

Weatherproof

Dis onne t,

Wiring and

Conne tor

FIGURE18-DisconnectSwitchLocations(Keepelectric

andgassupplycomponentsclearof servicepanels.)

12. Electrical Supply and Connections

11. Gas Pressures (cont'd)

Manifold or Orifice Pressure Settings (cont'd)

A disconnect switch is a required part of this installation. Switches

are available, as options or parts, or may be purchased locally. When

ordered as an optional component, the disconnect switch is shipped

separately.

The disconnect switch may be fusible or non-fusible. When provid-

ingor replacing fusesin a fusible disconnect switch, use dualelement

time delay fuses and size according to 1.25 times the maximum total

input amps.

When installing, be careful that the conduit and switch housing are

clear of furnace panels and inspection plates.Allow at least four feet

(1.2M) of service room between the switch and removable panels.

See FIGURE18 for suggestedlocations.

Field-SuppliedWiringSizefrom Disconnectto Electrical

BoxforConnectiontoMotorContactororStarter

Voltage/Phase MotorHP Wire Gauge BX Cable

120/1 1/4 - 1/2 14 3/8"

1 12 3/8"

208-230/1 1 - 1.5 14 3/8"

208-230/3 1/4 - 3 14 3/8"

5 12 3/8"

460/3 1/4 - 5 14 3/8"

575/3 1/2 - 5 14 3/8"

For Natural Gas: When the heater leaves the factory, the combination

valve is set so that the outlet gas pressure of a single-stage valve or high

fire of a two-stage valve is regulated to 3.5" w.c. Low fire on a two-stage

valve is set to 1.8" w.c. Inlet supply pressure to the valve must be a

minimum of 5" w.c. or as noted on the rating plate and a maximum of

14" w.c. NOTE: Always check the rating plate for minimum gas

supply pressure. Minimum supply pressure requirements vary based

on size of burner and the gas control option. Most units require a mini-

mum of 5" w.c. of natural gas as stated above, but Sizes 350 and 400 with

electronic modulation require a minimum of 6" w.c. natural gas supply

pressure. Sizes 300 and 350 with mechanical modulation require 7" w.c.

For Propane Gas: When the heater leaves the factory, the combination

valve is set so that the outlet gas pressure of a single-stage valve or high

fire of a two-stage valve is 10" w.c. Low fire on a two-stage valve is set to

5" w.c. Inlet pressure to the valve must be a minimum of 11" w.c. and a

maximum of 14" w.c.

Before attempting to measure or adjust manifold gas pressure, the inlet

(supply) pressure must be within the specified range for the gas being

All electrical wiring and connections, including electrical grounding MUST be made in accordance with the National Electric CodeANSI/NFPANo.

70 (latest edition) or, in Canada, the Canadian Electrical Code, Part I-C.S.A. Standard C22.1. In addition, the installer should be aware of any local

ordinances or gas company requirements that might apply.

Check the rating plate on the heater for the supply voltage and current requirements. A separate line voltage supply with fused disconnect switch

should be run directly from the main electrical panel to the furnace, making connection to leads in the junction box.All external wiring must be within

approved conduit and have a minimum temperature rise of 60°C. Conduit from the disconnect switch must be run so as not to interfere with the

service panels of the furnace.

CAUTION:Ifanyoftheoriginalwireassuppliedwiththeappliancemustbereplaced,itmustbereplaced

withwiringmaterialhavinga temperature rating of at least105°C,exceptforblockedvent,energy cutoff,

and sensor lead wires which must be 150°C. See Hazard Levels, page 2.

If the heater has field-installed options that require electrical connections, consult the instruction sheet and wiring diagram supplied in the option

package. Specific wiring diagrams that include standard and factory-installed options are included with the heater. Typicalwiringdiagramsareon

pages 18-23.

WARNING: If you turnoff thepowersupply, turn off the gas.See HazardLevels, page2.

Disconnect Switch

Convenience Outlet Option

When a convenience outlet (Option BC) is included, a separate power

supply must be provided to the receptacle. This circuit MUST BE on a

ground fault breaker to meet requirements. All wiring to the convenience

outlet must meet National Electrical CodeANSI/NFPA No. 70 (latest edi-

tion) and any local or utility codes that apply.

used both when the heater is in operation and on standby. Incorrect

inlet pressure could cause excessive manifold gas pressure immedi-

ately or at some future time.

Instructions to Check Valve Outlet (Manifold)

Pressure:

1) With the manual valve (on the combination valve) positioned to

prevent flow to the main burners, connect a manometer to the 1/8"

pipe outlet pressure tap in the valve. NOTE:Amanometer (fluid-filled

gauge) is recommended rather than a spring type gauge due to the

difficulty of maintaining calibration of a spring type gauge.

2) Open the valve and operate the heater. Measure the gas pressure to

the manifold. To measure the low stage pressure on units equipped

with a two-stage valve, disconnect the wire from the "HI" terminal on

the valve. (Be sure to reconnect the wire.)

Normally adjustments should not be necessary to the factory preset

regulator. If adjustment is necessary, set pressure to correct settings by

turning the regulator screw IN (clockwise) to increase pressure. Turn

regulator screw OUT (counterclockwise) to decrease pressure. Con-

sult the valve manufacturer's literature provided with the furnace for

more detailed information.

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 17

27 0 1 2 4 5 6 7 8 9 40

26 29 25 28 24 2 22 21 20 19 18 17 16 15 14 1 12 11 10 987

Optional

Downturn

Plenum

(Option AQ)

41 12456

FIGURE19-LocationofStandardand

OptionalControls-OutdoorSystems

1. Opt Auto Reset Freezestat

2. Combustion Air Pressure Switch

(power-vented)

3. Opt Discharge Air Firestat

4. Ignition Controller

5. Optional Maxitrol Discharge

Air Sensor (Opt AG8 or 9)

6. Optional Two-Stage Control-

ler (Opt AG3) or Maxitrol

Amplifier (Opt AG7, 8, or 9)

7. Optional Main Low Gas

Pressure Switch

8. Optional Pilot High Gas Pres-

sure Switch

9. Optional Main High Gas

Pressure Switch

10. Time Delay Relay (power-

vented)

11. Limit Control

12. Fan Control

13. Optional Freezestat Time

Delay Relay

14. Line Voltage Terminal Block

15. Low Voltage Terminal Block

16. Freezestat Relay

17. Optional Dirty Filter Pressure

Switch

18. Line Voltage Connection (field)

19. Optional Convenience Outlet

20. Blower Motor Contactor or

Starter

21. Optional High Ambient Limit

Control

22. Optional Outside Air or

Return Air Controller

23. Optional Mixed Air Control-

ler

24. Optional Potentiometer

25. Optional Return Air Dampers

26. Optional Two Position or

Modulating Damper Motor

27. Optional Outside Air Damper

28. Optional Potentiometer

29. Optional Filters

30.Blower Motor

31. Optional Control Relays (as

required, 8 maximum)

32. Auto Reset Reverse Flow Limit

33. Optional Return Air Firestat

34. Low Voltage Terminal Strip

35. Line Voltage Terminal Strip

36. Control Transformer

37. Control Transformer (as

required)

38. Optional Damper Motor

Transformer

39. Low Voltage Connection (field)

40. Optional Air Proving switch

41. Venter Assembly (power-

vented)

42. Vent Cap (gravity-vented)

43. Optional DDC interface

Control

Thermostat, Other Optional Controls, and Control Wiring

If more than one unit is cycled from one thermostat, separately acti-

vated relays must be substituted at unit thermostat connections.

There are a variety of optional controls available as part of the gas and

air control options. Check the wiring diagram and literature supplied

with the unit for operation of factory-installed optional controls. See

FIGURE 19 for location of standard and optional controls on outdoor

systems.

Optional shipped-separate heating and makeup air controls could in-

clude a single or two-stage thermostat, system switches, selectrastat,

freezestat, an automatic night setback device, a Maxitrol temperature

selector, a potentiometer, a pressure null switch, or a combination of

these controls. Install controls according to the manufacturer's instruc-

tions packaged with the heater.

A selection of remote consoles is available with certain appropriate

combinations of controls factory mounted.All consoles include indica-

tor lights for the blower and burner, an off/on system switch, and termi-

nal block wiring.

A thermostat is not standard equipment but is an installation require-

ment. Use either an optional thermostat available with the system or a

field-supplied thermostat. Install according to the thermostat

manufacturer's instructions.

A 24 volt thermostat must be used to actuate low voltage gas controls.

If line voltage from the thermostat to the unit is desired, consult the

factory representative.

Thermostats should be located five feet (1.5M) above the floor on an

inside wall, not in the path of warm or cold air currents and not in

corners where air may be pocketed. Do NOT install on cold air walls.

For specific connection details, refer to instruction packet with the

thermostat.

CAUTION: Make sure the thermostat has an

adequate VA rating for the total requirements. Add

coil rating of all relays and match thermostat rating.

See Hazard Levels, page 2.

24 Volt Controls - Maximum Amps

Single-StageValve - .6 Maxitrol System - .5

Fan Control - .12 Relay Coil - .12

Two-StageValve -.6 Spark Ignition System - .1

Time Delay Relay Heater - .1 Motor Contactor Coil - .33

Wiring Requirements for Maxitrol Systems

Control wires connected to a Selectrastat, a discharge air sensor, a re-

mote temperature selector or sensor, an amplifier, or the valve must not

be run close to or inside conduit with power or ignition wires. Doing so

Form I-XE/CRGB/RPB, Page 18

Typical Wiring Diagrams (Refer to the diagram supplied with the furnace for alternate controls or

optionalequipmentdetails.)

Model XE/HXE, Indoor, Gravity-Vented Furnace with Single-Stage Gas Valve

12. Electrical Supply and Connections (cont'd)

Wiring Requirements for Maxitrol Systems (cont'd)

Remote Console

If the unit being installed includes an optional console, it is shipped

separately for field installation.All consoles include indicator lights for

the blower and burner. Consoles may include a dirty filter indicator

light, a cooling indicator light, an on/off switch, a summer/off/winter

switch, a heat/vent/cool switch, a potentiometer, a thermostat, and/or a

Maxitrol temperature selector. Consoles are shipped separately for

remote installation and may be either mounted on a wall or recessed.

FieldControl Wiring - Length andGauge

Total Wire

Length Distance from

Unit to Control Minimum Recommended

Wire Gauge

150 ft (46M) 75 ft (23M) #18 gauge

250 ft (76M) 125 ft (38M) #16 gauge

350 ft (107M) 175 ft (53M) #14 gauge

225631

B W

BL R

BK BR

HTD H

GRND.

RECYCLE

G67BG-5

LOCKOUT

IGNITION

CHASSIS GRND.

CONTROLLER

G770NGC-4

PROBE

GRND

IGNITOR

STRIP

FLAME SENSING

FAN TD

HEATER

15 7CONTACTOR COIL

BLOWER MOTOR

7 - 8 - 9

MAIN

PILOT

BR 7

LIMIT

CONTROL

8BL

RBR

LINE V

24V

YYBKBK

BL BR

MANUAL RESET

BLOCKED

VENT SWITCH

40 VA CONTROL

TRANSFORMER

SET ANT. AT 0.8 AMPS

OPT. SINGLE STAGE

THERMOSTAT

810

1/60 OR 3/60

LINE

GRD

R OR W

R OR BK

PROTECTED

BLOWER

MOTOR

INTERNALLY

CONTACTOR

BLOWER MOTOR

CONTACTS

YBKBK

OPTIONAL

SUMMER/WINTER

SWITCH

PILOT

PV-MV

MAIN

REDUNDANT GAS VALVE

HONEYWELL

BKBK

(SEE NOTES)

DISCONNECT SWITCH

CONTACTS

FAN TD

1 3

TOTAL WIRE MINIMUM RECOMMENDED

LENGTH WIRE SIZE

150 FEET #18 GA.

250 FEET #16 GA.

350 FEET #14 GA.

FIELD CONTROL WIRING

WHITE - W

PURPLE - PR

BLUE - BL

GREEN - G

YELLOW - Y

ORANGE - O

RED - R

BROWN - BR

BLACK - BK

WIRING CODE

ON 115/460V. UNITS THE CONTROL TRANSFORMER IS A SINGLE VOLTAGE PRIMARY.

9. ON 208/230V. UNITS THE CONTROL TRANSFORMER HAS A DUAL VOLTAGE PRIMARY.

7. USE #12 GA. WIRE FOR LINE AND MOTOR WIRING ON SINGLE PHASE UNIT.

6. USE #14 GA. WIRE FOR LINE AND MOTOR WIRING ON 3 PHASE UNIT.

PREVENT VOLTAGE DROP BEYOND FIVE PERCENT OF SUPPLY LINE VOLTAGE.

5. LINE AND BLOWER MOTOR BRANCH CIRCUIT WIRE SHOULD BE SIZED TO

TEMPERATURE RATING OF AT LEAST 105° C., EXCEPT FOR

MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING A

4. CAUTION: IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE

3. DOTTED WIRING AND THE FOLLOWING CONTROLS ARE SUPPLIED AND INSTALLED

2. THE FOLLOWING CONTROLS ARE SUPPLIED AS OPTIONAL EQUIPMENT:

1. THE FOLLOWING CONTROLS ARE SUPPLIED BY REZNOR FOR FIELD INSTALLATION:

FOR 115/460V. UNITS USE BLACK AND YELLOW LEADS.

FOR 208V. UNITS USE BLACK AND RED LEADS (CAP YELLOW).

FOR 230V. UNITS USE BLACK AND YELLOW LEADS (CAP RED).

THERMOSTAT AND SUMMER / WINTER SWITCH

BLOCKED VENT SWITCH AND SENSOR LEAD WIRE WHICH MUST BE 150°S C.

8. USE #18 GA. WIRE FOR 24 VOLT CONTROL WIRING ON UNIT.

BY OTHERS: NONE

NONE

NOTES

USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO 1.25

TIMES THE MAXIMUM TOTAL INPUT AMPS.

10. WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH

11. DISCONNECT SWITCH IS FIELD FURNISHED OR AVAILABLE FROM FACTORY AS AN OPTION.

2. IF THE FLAME IS EXTINGUISHED DURING MAIN BURNER OPERATION THE

SAFETY SWITCH CLOSES THE MAIN VALVE AND RECYCLES THE SPARK GAP.

ON UNIT EQUIPPED WITH G770NGC-4 LOCKOUT CONTROL, IF PILOT IS

NOT ESTABLISHED WITHIN 120 SECONDS (APPROX.) UNIT LOCKS OUT

AND MUST BE RESET BY INTERRUPTING POWER TO CONTROL CIRCUIT

(SEE LIGHTING INSTRUCTIONS).

OPERATING SEQUENCE

1. SET THERMOSTAT AT LOWEST SETTING.

2. TURN ON POWER, MAIN AND PILOT MANUAL GAS VALVES.

1. ON A CALL FOR HEAT BY THE THERMOSTAT.

(A) THE PILOT GAS VALVE AND SPARK GAP ARE ENERGIZED TO PRODUCE A PILOT

FLAME ON EACH OPERATING CYCLE. THE SENSING PROBE PROVES THE

PRESENCE OF THE PILOT FLAME AND ENERGIZES THE SAFETY PORTION OF

THE CONTROL. THE SWITCH ACTION DE-ENERGIZES THE SPARK GAP AND

ENERGIZES THE MAIN VALVE. THE MAIN GAS IGNITES AND UNIT FIRES AT

4. SET THERMOSTAT AT LOWEST SETTING FOR SHUTDOWN.

(B) THE BLOWER MOTOR OPERATES FROM FAN TIME DELAY.

3. SET THERMOSTAT AT DESIRED SETTING.

FIRING SEQUENCE:

FULL RATE.

(A) FIRING RATE IS CONTROLLED BY THE THERMOSTAT.

5. SET SUMMER / WINTER SWITCH AT "ON" POSITION (CLOSED) FOR CONTINUOUS

BLOWER OPERATION.

(A) BLOWER MOTOR REMAINS ON AS DETERMINED BY FAN TIME DELAY.

REDUNDANT GAS VALVE

ALTERNATE W.R. OR ROBERTSHAW

BL P

MAIN

PILOT

XE: AH2/AH3-AG1-CH1-CL1 DWG. #225631 RSM

OPTIONAL FIELD WIRING

OPTIONAL FACTORY WIRING

FACTORY WIRING

FIELD WIRING

TERMINAL BLOCK -- HEATER COMPARTMENT

4, 7, 8, 10, 11,

12, B & W

may cause the unit to function erratically or may destroy the amplifier.

If shielded wires are used, shield must be insulated and grounded at the

amplifier location only.

Form I-XE/CRGB/RPB, Mfg No. 131782 Rev 4, Page 19

Model XE/HXE, Indoor, Gravity-Vented Furnace with Two-Stage Gas Valve

225632

810

BL R

BK BR

HTD H

GRND.

RECYCLE

G67BG-5

LOCKOUT

IGNITION

CHASSIS GRND.

CONTROLLER

G770NGC-4

PROBE

GRND

IGNITOR

STRIP

FLAME SENSING

FAN TD

HEATER

13 RR

LOW STAGE

PILOT

HIGH STAGE

BK Y

BR 7

40 VA. CONTROL

TRANSFORMER

BK Y

BL BR

LIMIT

CONTROL

LINE VOLT

24V

B W

VENT SWITCH

BLOCKED

MANUAL RESET

RCONTACTOR COIL

BLOWER MOTOR

7 - 8 - 9

16 BR

108

OPTIONAL S/W

SWITCH

Q674G SUBBASE

SET ANT. AT 0.8 AMPS

OPT. T874F THERMOSTAT

1/60 OR 3/60

LINE

GRD

R OR W

R OR BK

PROTECTED

BLOWER

MOTOR

INTERNALLY

CONTACTOR

BLOWER MOTOR

CONTACTS

YBKBK

HIGH

STG

PILOT

STG

LOW

REDUNDANT GAS VALVE

HONEYWELL TWO STAGE

BK BK

(SEE NOTES)

DISCONNECT SWITCH

CONTACTS

FAN TD

1 3

WHITE - W

PURPLE - PR

BLUE - BL

GREEN - G

YELLOW - Y

ORANGE - O

RED - R

BROWN - BR

BLACK - BK

WIRING CODE

PILOT

ALTERNATE W.R. TWO STAGE

REDUNDANT GAS VALVE

HIGH

STG

LOW

TOTAL WIRE MINIMUM RECOMMENDED

LENGTH WIRE SIZE

150 FEET #18 GA.

250 FEET #16 GA.

350 FEET #14 GA.

FIELD CONTROL WIRING

OPTIONAL FIELD WIRING

OPTIONAL FACTORY WIRING

FACTORY WIRING

FIELD WIRING

TERMINAL BLOCK -- HEATER COMPARTMENT

4, 7, 8, 10, 11, 12, 13, B & W

ON 115/460V. UNITS THE CONTROL TRANSFORMER IS A SINGLE VOLTAGE PRIMARY.

9. ON 208/230V. UNITS THE CONTROL TRANSFORMER HAS A DUAL VOLTAGE PRIMARY.

PREVENT VOLTAGE DROP BEYOND FIVE PERCENT OF SUPPLY LINE VOLTAGE.

5. LINE AND BLOWER MOTOR BRANCH CIRCUIT WIRE SHOULD BE SIZED TO

2. DOTTED WIRING INSTALLED BY OTHERS.

1. THE FOLLOWING CONTROLS ARE SUPPLIED BY REZNOR FOR FIELD INSTALLATION:

FOR 115/460V. UNITS USE BLACK AND YELLOW LEADS.

FOR 208V. UNITS USE BLACK AND RED LEADS (CAP YELLOW).

FOR 230V. UNITS USE BLACK AND YELLOW LEADS (CAP RED).

8. USE #18 GA. WIRE FOR 24 VOLT CONTROL WIRING ON UNIT.

NONE

NOTES

4. CAUTION: IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE

MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING

A TEMPERATURE RATING OF AT LEAST 105° C., EXCEPT FOR BLOCKED

VENT SWITCH AND SENSOR LEAD WIRE WHICH MUST BE 150° C.

6. USE #14 GA. WIRE FOR LINE AND MOTOR WIRING ON 3 PHASE UNIT.

THERMOSTAT AND SUMMER/WINTER SWITCH

3. THE FOLLOWING CONTROLS ARE SUPPLIED AS OPTIONAL EQUIPMENT:

7. USE #12 GA. WIRE FOR LINE AND MOTOR WIRING ON SINGLE PHASE UNIT.

USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO 1.25

TIMES THE MAXIMUM TOTAL INPUT AMPS.

10. WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH

11. DISCONNECT SWITCH IS FIELD FURNISHED OR AVAILABLE FROM FACTORY AS AN OPTION.

7. IF THE FLAME IS EXTINGUISHED DURING MAIN BURNER OPERATION THE

SAFETY SWITCH CLOSES THE MAIN VALVE AND RECYCLES THE SPARK GAP.

ON UNIT EQUIPPED WITH G770NGC-4 LOCKOUT CONTROL, IF PILOT IS

NOT ESTABLISHED WITHIN 120 SECONDS (APPROX.) UNIT LOCKS OUT

AND MUST BE RESET BY INTERRUPTING POWER TO CONTROL CIRCUIT

(SEE LIGHTING INSTRUCTIONS).

OPERATING SEQUENCE

1. SET THERMOSTAT SWITCH AT "OFF" POSITION.

2. TURN ON POWER, MAIN AND PILOT MANUAL GAS VALVES.

3. SET THERMOSTAT SWITCH AT "AUTO" POSITION.

(B) BLOWER MOTOR OPERATES FROM FAN TIME DELAY.

(A) FIRING RATE IS CONTROLLED BY THE TWO STAGE THERMOSTAT.

4. ON A CALL FOR HEAT BY THE LOW STAGE OF THE THERMOSTAT.

(A) THE PILOT GAS VALVE AND SPARK GAP ARE ENERGIZED TO PRODUCE

A PILOT FLAME ON EACH OPERATING CYCLE. THE SENSING PROBE

PROVES THE PRESENCE OF THE PILOT FLAME AND ENERGIZES THE

SAFETY SWITCH PORTION OF THE CONTROL. THE SWITCH ACTION

DE-ENERGIZES THE SPARK GAP AND ENERGIZES THE MAIN VALVE.

5. ON A CALL FOR HEAT BY THE HIGH STAGE OF THERMOSTAT, THE UNIT FIRES

6. SET THERMOSTAT SWITCH AT "OFF" POSITION FOR SHUTDOWN.

THE MAIN GAS IGNITES AND UNIT FIRES AT LOW RATE.

AT FULL RATE.

8. SET SUMMER/WINTER SWITCH AT "ON" POSITION (CLOSED) FOR CONTINUOUS

BLOWER OPERATION.

(A) BLOWER MOTOR REMAINS ON AS DETERMINED BY FAN TIME DELAY.

XE: AH2/AH3-AG2-CH1-CL7 DWG. #225632 RSM

Form I-XE/CRGB/RPB, Page 20

Model CRGB , Outdoor, Gravity-Vented Furnace with Standard Single-Stage Gas Valve

Typical Wiring Diagrams (cont'd)

8810 10

12 66

YYYYY

BL BL R R R

BK Y

BK BR

HTD H

GRND.

RECYCLE

G67BG-5

LOCKOUT

IGNITION

CHASSIS GRND.

CONTROLLER

G770NGC-4

PROBE

GRND

IGNITOR

STRIP

FLAME SENSING

FAN TD

HEATER

R17

BR 7CONTACTOR COIL

BLOWER MOTOR

7 - 8 - 9

CRGB SERIES AH2 OR AH3-AG1-CL1 DWG. #B-225510

RSM

24V

LINE V

MAIN

PILOT

TRANSFORMER

YBK

LIMIT

AUTO RESET

REVERSE FLOW UNIT AUTOMATIC

LIMIT CONTROL

SET ANT. AT 0.8 AMPS

OPT. SINGLE STAGE

THERMOSTAT

CONTROL

40 VA

L1 L2

1/60 OR 3/60

LINE

GRD

R OR W

R OR BK

PROTECTED

BLOWER

MOTOR

INTERNALLY

CONTACTOR

BLOWER MOTOR

CONTACTS

WBKBK

225510

PILOT

PV-MV

MAIN

REDUNDANT GAS VALVE

HONEYWELL

(SEE NOTES)

DISCONNECT SWITCH

CONTACTS

FAN TD

1 3

REDUNDANT GAS VALVE

ALTERNATE W.R. OR ROBERTSHAW

BL P

MAIN

PILOT

WHITE - W

PURPLE - PR

BLUE - BL

GREEN - G

YELLOW - Y

ORANGE - O

RED - R

BROWN - BR

BLACK - BK

WIRING CODE

TOTAL WIRE MINIMUM RECOMMENDED

LENGTH WIRE SIZE

150 FEET #18 GA.

250 FEET #16 GA.

350 FEET #14 GA.

FIELD WIRING

ON 115/460V. UNITS THE CONTROL TRANSFORMER IS A SINGLE VOLTAGE PRIMARY.

9. ON 208/230V. UNITS THE CONTROL TRANSFORMER HAS A DUAL VOLTAGE PRIMARY.

7. USE #12 GA. WIRE FOR LINE AND MOTOR WIRING ON SINGLE PHASE UNIT.

6. USE #14 GA. WIRE FOR LINE AND MOTOR WIRING ON 3 PHASE UNIT.

TO PREVENT VOLTAGE DROP BEYOND FIVE PERCENT OF SUPPLY LINE VOLTAGE.

5. LINE AND BLOWER MOTOR BRANCH CIRCUIT WIRE SIZED SHOULD BE OF A SIZE

A TEMPERATURE RATING OF AT LEAST 105° C., EXCEPT FOR

MUST BE REPLACED, IT MUST BE REPLACED WITH WIRING MATERIAL HAVING

4. CAUTION: IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE

3. DOTTED WIRING AND THE FOLLOWING CONTROLS ARE SUPPLIED AND INSTALLED

2. THE FOLLOWING CONTROLS ARE SUPPLIED AS OPTIONAL EQUIPMENT:

1. THE FOLLOWING CONTROLS ARE SUPPLIED BY REZNOR FOR FIELD INSTALLATION:

FOR 115/460V. UNITS USE BLACK AND YELLOW LEADS.

FOR 208V. UNITS USE BLACK AND RED LEADS (CAP YELLOW).

FOR 230V. UNITS USE BLACK AND YELLOW LEADS (CAP RED).

THERMOSTAT

SENSOR LEAD WIRE WHICH MUST BE 150° C.

8. USE #18 GA. WIRE FOR 24 VOLT CONTROL WIRING ON UNIT.

BY OTHERS: NONE

NONE

NOTES

USE DUAL ELEMENTS TIME DELAY FUSES AND SIZE ACCORDING TO 1.25

TIMES THE MAXIMUM TOTAL INPUT AMPS.

10. WHEN PROVIDING OR REPLACING FUSES IN THE FUSIBLE DISCONNECT SWITCH

11. DISCONNECT SWITCH IS FIELD FURNISHED OR AVAILABLE FROM FACTORY AS AN OPTION.

OPERATING SEQUENCE

1. SET THERMOSTAT AT LOWEST TEMPERATURE.

2. TURN ON POWER AND MANUAL GAS VALVE TO UNIT.

(B) BLOWER MOTOR OPERATES FROM FAN TIME DELAY.

(A) FIRING RATE IS CONTROLLED BY THE THERMOSTAT.

LIGHTING INSTRUCTIONS).

AND MUST BE RESET BY INTERRUPTING POWER TO CONTROL CIRCUIT (SEE

NOT ESTABLISHED WITHIN 120 SECONDS (APPROX.) UNIT LOCKS OUT

ON UNIT EQUIPPED WITH G770NGC-4 LOCKOUT CONTROL, IF PILOT IS

SAFETY SWITCH CLOSES THE MAIN VALVE AND RECYCLES THE SPARK GAP.

2. IF THE FLAME IS EXTINGUISHED DURING MAIN BURNER OPERATION THE

THE MAIN GAS IGNITES AND THE UNIT FIRES AT FULL RATE.

DE-ENERGIZES THE SPARK GAP AND ENERGIZES THE MAIN VALVE.

SAFETY SWITCH PORTION OF THE CONTROL. THE SWITCH ACTION

PROVES THE PRESENCE OF THE PILOT FLAME AND ENERGIZED THE

A PILOT FLAME ON EACH OPERATING CYCLE. THE SENSING PROBE

THE PILOT GAS VALVE AND SPARK GAP ARE ENERGIZED TO PRODUCE

1. ON A CALL FOR HEAT BY THE THERMOSTAT

FIRING SEQUENCE:

3. SET THERMOSTAT AT DESIRED TEMPERATURE.

4. THERMOSTAT AT LOWEST TEMPERATURE FOR SHUTDOWN.

(A) BLOWER MOTOR REMAINS ON AS DETERMINED BY FAN TIME DELAY.

TERMINAL BLOCK -- HEATER COMPARTMENT

TERMINAL BLOCK -- BLOWER COMPARTMENT

4, 6, 7, 8, 10 & 11

6, 7, 8, 10, 12,

L1 & L2

OPTIONAL FIELD WIRING

OPTIONAL FACTORY WIRING

FACTORY WIRING

FIELD WIRING

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