Thomas&betts Tr User manual

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 1

FOR YOUR SAFETY

The use and storage of gasoline or other

flammable vapors and liquids in open

containersinthevicinityofthisapplianceis

hazardous.

WARNING: Gas-fired appliances are not

designedforuseinhazardousatmospherescontaining

flammable vapors or combustible dust, in

atmospheres containing chlorinated or halogenated

hydrocarbons, or in applications with airborne

silicone substances. See Hazard Levels, Page 2.

GENERAL

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

structionsinthismanualandincompliancewithallcodesandrequirementsof

authorities having jurisdiction. The instructions in this manual apply to the

heater models shown below.

Model Characteristics

TR Indoor, Gas-Fired,

Low-Intensity

Infrared Tubular

System, 0-2000 ft

(0-610M) elevation

TR-H Indoor, Gas-Fired,

Low-Intensity Infrared

Tubular System,

for 2001-8000 ft

(611-2438M) elevation

Table of Contents

FOR YOUR SAFETY

If you smell gas:

1. Open windows.

2. Don't touch electrical switches.

3. Extinguish any open flame.

4. Immediately call your gas supplier.

APPLIESTO: INFRA-REZ®Heater ModelsTR/TR-H

Gas-FiredTubular,

Radiant, Low-Intensity

Infrared Heater

INSTALLATIONFORMRZ-NA-I-TR

Obsoletes Form 456 (Version B)

WARNING: Improper installation, adjust-

ment,alteration,service, ormaintenancecan

cause property damage, injury or death.

Read the installation, operation, and

maintenanceinstructionsthoroughlybefore

installingorservicingthisequipment.

Paragraph No. Page Paragraph No. Page

GENERAL................................................................................................. 1

HEATER INSTALLATION............................................................... 1-21

1A. Installation Codes............................................................................... 2

1B. Warranty .............................................................................................. 2

2. Description/General .............................................................................. 2

3. Specifications ........................................................................................ 3

4. Clearances to Combustibles ................................................................. 3

5. Location and Mounting Height .......................................................3-4

6. Uncrating/Packaging ............................................................................ 4

7. High Altitude Operation ....................................................................... 5

8. Suspension Dimensions and Preparation ........................................... 5

9. Prepare and Install Burner/Control Box and

Combustion Chamber Tube .........................................................6-8

10. Install the Heat Exchanger Tube(s), Tail Pipe

Tube, and Turbulator Strip ....................................................... 8-11

11. Install Reflectors (including Standard Reflectors, Optional

Side Shield, and Optional Reflector Gap and End Covers) ..... 12

12. Venting ........................................................................................ 13-17

13. Combustion Air ................................................................................ 17

14. Gas Piping and Pressures .......................................................... 17-19

15. Electrical Supply and Connections.......................................... 19-20

16. Check Installation and Start-Up ..................................................... 21

OPTIONAL EQUIPMENT - Field Installed ................................ 22-23

17. Optional Heat Exchanger Tubes ("U", "L", 5-ft) ......................... 22

18. Hanger Kit, Option CK11............................................................... 22

19. Turnbuckle Kit, Options CK12-18................................................ 22

20. Combustion Air Inlet Kit, Option DE2 ......................................... 23

21. Dual Vent Kit, Option CC5 ............................................................. 23

22. Optional Side Shield, Options CD13-20....................................... 23

23. Optional Reflector Gap and End and Gap Covers ...................... 23

24. Multiple Heater Control, Options CL31 and 32 .......................... 23

25. Optional Unit-Mounted Thermostat Bracket Kit,

Option CM3 ................................................................................... 23

Index......................................................................................................... 24

REFERENCES: Operation/Maintenance/Service Manual, Form RZ-NA-O-TR

Suspension Dimensions and Configuration Drawings Booklet, Form RZ-NA 607

Replacement Parts Manual, Form RZ-NAP-VR/TRP/TR

Form RZ-NA-I-TR, Page 2

HAZARDINTENSITYLEVELS

1. DANGER: Failure to comply will result in severe personal injury or death and/or property damage.

2. WARNING: Failure to comply could result in severe personal injury or death and/or property dam-

age.

3. CAUTION: Failure to comply could result in minor personal injury and/or property damage.

1A. Installation Codes

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

installedinaccordance with the NationalFuelGasCodeANSIZ223.1a

(latest edition).ACanadian installation must be in accordance with the

CAN/CGA B149.1 and B149.2 Installation Code for Gas Burning

Appliances and Equipment. These codes are available from CSA In-

formation Services, 1-800-463-6727. Local authorities having juris-

diction should be consulted before installation is made to verify local

codes and installation procedure requirements.

All electrical wiring must be in accordance with the National Electric

CodeANSI/NFPA NO. 70 (latest edition) or, in Canada, the Canadian

Electrical Code, part I-C.S.A. Standard C22.1.

The installing contractor must be familiar with all of the various re-

quirements and is responsible for installing this heater in compliance

with the applicable codes.

Special Installations --

AircraftHangars: In the United States, the heaters must be installed

in accordance withANSI NFPA 409 (latest edition), Chapter 5. NFPA

Publications are available from the National Fire ProtectionAssocia-

tion, Batterymarch Park, Quincy, MA 02269. In Canada, installation

in an aircraft hangar must comply with CAN/CGA-B149.2, Section

4.21. BothANSI NFPA 409 and the CAN/CGA-B149.2 specify that

the heater shall not be located in an area of an aircraft hangar where it

may be subjected to physical damage by aircraft, cranes, moveable

scaffolding, or other objects.

NFPA 409 specifies a clearance of 10 feet to the bottom of the heater

from the highest surface of the wings or engine enclosures of the

highestaircraftwhichmay be housed inthehangar.CAN/CGAB149.2

specifiesthataninfrared heater installed in anaircrafthangarbe at least

10 ft (3m) above either the highest fuel storage compartment or the

highest engine enclosure of the highest aircraft which may occupy the

hangar. NFPA 409 and CAN/CGA B149.2 specify a minimum clear-

ance of eight feet from the floor to the heater in other sections, such as

offices, or shops, that communicate with the aircraft hangar.

Public Garages: In the United States, heaters installed in public ga-

ragesmustbeinaccordance with National Fire ProtectionAssociation

(NFPA) 88B (latest edition), Section 3-2.3. Overhead heaters must be

located not less than eight feet above the floor and installed in accor-

dance with the conditions of their approval. NFPA 88B requires the

following warning:

WARNING:Minimumclearancemarkedonthe

heatermustbemaintainedfromvehiclesparked

under the heater.

In Canada, in a garage, the minimum clearance from the bottom of an

infraredheaterto the upper surface ofthehighestvehiclewhich may be

housed therein shall be 50 percent greater than the certified clearance,

and in no case less than eight feet (2.4m).

WARNING:These tubularradiant heaters DO

NOTqualifyfor explosion-proofinstallations.

WARNING: The installing contractor must be

certain that the area where the heater is being

installeddoesnotcontaincorrosiveortoxicfumes

orthatelementsin the atmosphere donotproduce

corrosiveortoxicfumes in the presenceofanopen

flame.

The chlorine atmosphere in enclosed swimming

poolareasmaycauseburner and tube corrosion if

the area is not ventilated.ASHRAE design guides

suggest a minimum of 5-6 air changes per hour.

The manufacturer recommends outside

combustionair.Toprovide outsidecombustion air,

Option DE2, Combustion Air Inlet Kit, must be

used.

1B.Warranty

Refertolimited warranty informationonthewarranty sheet in the"Owner's

Envelope".

2. Description/General

These radiant tubular heaters are low-intensity infrared heaters using a

power burner that fires into a 4" diameter steel tube, either 20, 30, 40, 50,

60, or 70 feet in length. The power burner is equipped with a blower for

supplyingcombustionairandaspark-to-pilot-to-mainburnerignitionsys-

tem. The highly emissive tubes are in 10-foot sections, and each section

has a polished reflector. The tube section attached to the burner is the

combustion chamber and all other sections are heat exchanger tubes with

the exhaust end heat exchanger tube being identified as the tail pipe. Op-

tional "L"-shaped, "U"-shaped, and 5-foot heat exchanger tubes are avail-

able to change the heater configuration to adapt to various applications.

Standardmodelheatersare designed to operate at fullinputratesof50,000,

75,000, 100,000, 125,000, 150,000, 175,000, or 200,000 BTUH at alti-

tudesfrom0to2000ftelevation.Highaltitudemodelheatersaredesigned

tooperateatfullinputratesof50,000,75,000,100,000,125,000,150,000,

175,000,or200,000BTUHat altitudes from 2001 to 6000 ft elevation and

from 6001 to 8000 ft at full input rates from 50,000 to 175,000 BTUH.

Venting may be either vertical or horizontal. A vent cap must be used.

Install a vent cap supplied as Option CC1 or a fully-comparable, field-

suppliedventterminalcap such as aType L BreidertAir-x-hauster®. (Type

L Air-x-hauster®is a trademark of The G. C. Breidert Company.) Dual

venting of two units is permissible when using an Optional Dual Vent Kit

(Option CC5). These heaters are also approved for operation without

outdoor venting.

Combustion air can either come from the heated space or be piped from

outside. Outside combustion air should be supplied (1) if the building

atmospherehasnegativepressure;(2)ifthe building atmosphere is dirty or

dusty; (3) if the building atmosphere contains substances that will cause

toxicgaswhencombinedwithflameorflue products; or (4) if the heater is

being installed in a tightly closed room that does not provide required air

for combustion. Installation of an Optional Combustion Air Inlet Kit is

required to provide outside combustion air.

3. Specifications

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 3

BTUH/Length/Configurations

Depending on the length and size of the heater, the heat exchanger

sections may be installed in various configurations. Optional "L"-

4. Clearances to Combustibles

Required clearances depend on the size of the heater (BTUH input), the position of the reflector, and the addition of an optional side shield on the rear

side of the heater. Refer to illustrations in Figure 1 to define clearances.

BTUHInput MinimumLength MaximumLength

50,000 20 feet 30 feet

75,000 20 feet 40 feet

100,000 30 feet 50 feet

125,000 40 feet 50 feet

150,000 50 feet 60 feet

175,000 50 feet 70 feet

200,000 50 feet 70 feet

BTUH Gas SupplyPressure

Input Type Minimum Maximum

50,000 - 150,000 Natural 4.5" w.c. 14" w.c.

175,000 - 200,000 Natural 6" w.c. 14" w.c.

50,000 - 150,000 Propane 11" w.c. 14" w.c.

Voltage/Phase Standard 115/1; Optional

208/1, 230/1, 460/1

Frequency 60 Hertz

Maximum Amps 3.0

Flame Safety Electronic

Pilot Burner Ignition Spark

Main Burner Ignition Pilot

shaped, 5-foot, and "U"-shaped heat exchanger tubes are available

to adapt the heaters to these configurations (Option UC2 for "L";

Option UB3 for "U"; Option UA1 for 5-foot heat exchanger tube).

Refer to the Suspension Dimensions and Configuration Drawings

Booklet (in the Owner's Envelope) to determine the permissible

configurations for each size and length of heater and guidelines for

using the 5-ft heat exchanger tube.

GasType and Supply Gas Pressure

Sizes 50-150 heaters are available for use with either natural or

Clearancetocombustiblesisdefinedastheminimum 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 tem-

perature is not exceeded.

The clearances listed in the tables are installation requirements. In

addition,ANSI Z-223-1, Section 6.18, requires that signs be posted

specifyingthemaximum permissible stacking heights to assure that

the required clearances from the heater to combustibles are main-

tained in areas where items are stored under the heater.

Refer to Paragraph 1, Special Installations, for specific clearance

requirements for heaters installed in aircraft hangars and public ga-

rages.

5. Location and Mounting Height

When selecting the installation location, major factors to consider are (1)

Personal and Property Safety, (2) Personal Comfort, and (3) Heating Effi-

ciency

(1) Safety

The location must meet the Installation Codes listed in Paragraph 1 and any

local codes. These heaters are approved for indoor commercial/industrial

installations only. Do not install these tubular radiant heaters in areas that

containcorrosive or toxic fumes or where elements in the atmosphere could

produce corrosive or toxic fumes in the presence of an open flame. These

heaters do not qualify for explosion-proof installations.

propane gas. Sizes 175-200 are available for use with natural gas only.The

supply pressure listed is the gas pressure required at the gas valve inlet.

Measure gas pressure with a manometer.

Electrical Characteristics

Top of Reflector

Front

Reflector

Below the Reflector

or Below the Tube Optional

Side

Shield

Rear

Reflector

Front

Reflector

Top of Reflector

Rear

Reflector

Below the Tube

HORIZONTAL REFLECTOR REFLECTOR AN LED (1° TO 45°)

Burner

End

Heat

Exchanger

Bend

Exhaust End

HORIZONTAL CLEARANCES

Figure 1 - Clearance Orientation

Clearances to Combustibles

Horizontal Clearances

Below

Top*

Burner

End

Heat

Exchanger

Bend (U or L)

Exhaust

End

Vent

inches 66 12 24 36 24 6

mm 1676 305 610 914 610 152

inches 78 12 30 48 24 6

mm 1981 305 762 1219 610 152

inches 84 12 30 48 24 6

mm 2134 305 762 1219 610 152

With Reflector Positioned

BTUH

Input 0-30o31-45o0-30owith

Side Shield

(000)

Front

Rear

Front Rear Front

Rear

inches 30 30 48 18 36 12

mm 762 762 1219 457 914 305

inches 42 42 66 32 42 12

mm 1067 1067 1676 813 1067 305

inches 54 54 78 36 54 12

mm 1372 1372 1981 914 1372 305

** Refer to Paragraph 10 for side shield installation.

125/

150

175/

200

BTUH

Input

(000)

* If the heater is not vented to the outside of the building, the

top clearance to combustibles is 18" (457mm).

50/75/

100

125/

150

175/

200

50/75/

100

Form RZ-NA-I-TR, Page 4

Tube Cartons - Tubes are also packaged so that a minimum number of

cartons will cover all lengths of heater systems. This package identifica-

tion system applies to all heaters, whether shipped from distributor stock

or shipped to order from the factory. Before beginning installation,verify

thatthe packages at the job site match the length ofheater being installed.

Packaging Scheme for Tubes

Pkg P/N Contents

120294 Combustion ChamberTube; Tail Pipe with Turbulator

120295 Combustion ChamberTube; Heat Exchanger Tube;

Tail Pipe with Turbulator

120296 Heat Exchanger Tube; Heat ExchangerTube with

Turbulator

Tube Packages (left) Required by Length of System

Length Qty Pkg Qty Pkg

20 ft system requires 1 P/N 120294

30 ft system requires 1 P/N 120295

40 ft system requires 1 P/N 120294 1P/N 120296

50 ft system requires 1 P/N 120295 1P/N 120296

60 ft system requires 1 P/N 120294 2P/N 120296

70 ft system requires 1 P/N 120295 2P/N 120296

Reflectors, reflector brackets, and hardware packages are included in

heatingapplications. Referto therecommendedminimummountingheights

below. Use the mounting height, the size ofthe heater, the heater configu-

ration,andtheapplicationconditionstodeterminethemostefficientloca-

tion of the heater.

6. Uncrating/Packaging

Check for shipping damage. If any damage is found,document the dam-

age with the shipping agency and immediately contact your Reznor

Dsitributor.

Because of their modular design, these heaters are packaged in sections

and require field assembly. The burner/control box is in one carton, and

the tubes are packaged in one, two or three cartons depending on the

length of the system.

Burner/ControlBox Carton - For the convenience of both the stocking

and the non-stocking distributor, the burner/control boxes have two dif-

ferent packaging methods. Readcarefullytodeterminewhetherornot

the burner/control box requires field conversion before being in-

stalled.

(1) Burner/Control Box Packages

Package Contents

TR50 Factory-assembled Size 50,000 BTUH heater

TR75/100 Factory-assembled Size 75,000 BTUH heater

Conversion kit to change to a Size 100,000 BTUH heater

TR125/150 Factory-assembled Size 125,000 BTUH heater

Conversion kit to change to a Size 150,000 BTUH heater

TR175/200 Factory-assembled Size 175,000 BTUH heater

Conversion kit to change to a Size 200,000 BTUH heater

(2)Burner/ControlBoxFactoryBuiltto a Specific Size - If the burner/

controlboxcartondoesnot have a label about field conversion, the carton

contains a burner/control box factory-built to a specific size. Check the

rating plate to verify size and type of gas.

5. Location and Mounting

Height (cont'd)

Clearancetocombustiblesmustbeobserved(SeeParagraph 4), includ-

ing clearances to stock that might be periodically stacked underneath

theheater.

The supporting structure must have a load-carrying capacity of at least

200 lbs.

Do not locate the heater above or too close to electric lines, gas pipes,

emergency sprinkler systems, or any such structures that could be

adversely affected by radiant or convection heat.

Donotlocatethe heater where it could be damaged byhighlifts,cranes,

or any other such equipment.

Since chain suspension is required to allow for expansion and contrac-

tionof the tubes, proper positioning near large door openings is impor-

tant.Iftheheater is being installed near alargedoor(ex:garage, loading

dock,aircrafthangar,etc.),position the heater so that it willnot"swing"

inthe wind. Lateral movement of the tubular system should be limited.

(2) Comfort

Because of the unique heat transfer features of an infrared heater, the

comfort quality of the heat is greatly affected by the location of the

heater. Rays of heat are emitted from the surface of the tubes and

directedbythereflectors.Whenradiantheatraysreachasurface,those

rays are absorbed, raising the temperature of that "object". Since infra-

red heat does not heat the air, a comfort advantage is that stratification

does not occur. When the rays are not obstructed from reaching the

floor, the floor and lower level areas maintain a more comfortable

temperature than with convection (warm air) heating equipment.

For optimum comfort when infrared heaters are being used to "heat"

personnel (spot heating), it is recommended that (1) the rays of heat be

directed toward the person(s) from an angle rather than from directly

overhead, and (2) the heater(s) be arranged so that rays are directed

against at least two sides (or front and back) of the person(s). If the

heater must be hung directly overhead, a higher mounting height will

increasethecomfortlevelbecause the greater distance will decrease the

intensity level of the rays. Another significant factor when locating

the heater in relation to people is that the heat emitted from the

burner/combustionchamber end of the tubularinfrared heater is

moreintense than the heat emitted from the exhaustend. For this

reason, a U-tube configuration is often best suited for overhead

spot heat applications.

Tubular radiant heaters are engineered to provide comfort-level per-

sonal spot and space heating, but each application should be designed

individuallyto determine the best, quality-comfort locations.

(3)Efficiency

Because of the unique features of radiant heat transfer, selecting the

most efficient location for infrared equipment depends on the "floor"

coverage of the emitted heat rays. Floor coverage distance can be fig-

uredasapproximatelytwotimes the mounting height of the unit. How-

ever,comfort levelheating depends on the infrared intensity, and inten-

sity levels decrease with higher mounting heights and greater floor

coverage. For more accurate measurement, consult the manufacturer's

flux density tables.

Forspaceheatinginfrared applications, the location of theunitsmustbe

evaluatedaspartoftheheatersizeselection.DeterminethetotalBTU's

required, the floor coverage required, and the mounting height. From

thisinformation design a heater size and location plan that will provide

the most complete floor coverage without excessive overlapping. In

mostcases,perimeterheatersshouldbe located parallel to the wall. The

distance from the wall is determined by whether the reflectors will be

angled or horizontal.

For spot heating applications, the tubular system should be located to

direct the rays toward the area requiring heat. Depending on the instal-

lation,thiscan be done from directly overhead or reflector angled from

the side. U-tube configurations are often best suited to overhead spot

RecommendedMinimum Mounting Height

Reflector Size (000BTUH Input)

Position 50 75 100 125 150 175 200

feet 11 12 13 15 16 17 18

M3.4 3.7 4.0 4.6 4.9 5.2 5.5

feet 9 101113141516

M2.7 3.0 3.4 4.0 4.3 4.6 4.9

feet 8 9 10 11 13 14 15

M2.4 2.7 3.0 3.4 4.0 4.3 4.6

Horizontal

30° Angle

45° Angle

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 5

each carton. (NOTE: Chain for hanging is not included. Use either an Optional Hanger Kit and/or Turnbuckle Kit or field-supplied hardware. See

suspension requirements in Paragraph 7.)

Accessory Cartons --All field-installed options are shipped in separate cartons.

7. High Altitude Operation

All factory-built Model TR-H units are designed to operate at full input rates at elevations from 2001 to 6000 ft (611-1830M). In addition, Model TR-

H in Sizes 50 to 175 will operate at full rate at elevations from 2001 to 8000 ft (611-2440M).

High altitude kits are available to convert Size 50, 75, 100, 175, and 200 sea level burner/control boxes for use at high altitudes. Kits are available for

all sizes to convert from one high altitude level to another.

If the heater being installed requires high altitude conversion, contact your distributor to obtain the appropriate kit and complete the conversion as part

of the burner/control box preparation in Paragraph 9.

8. Suspension Dimensions and Preparation

Refer to the Suspension Point Dimensions and Installation Con-

figuration Drawings Booklet. This booklet provides suspension

point dimensions, illustrations of permissible configurations for

eachsizeand length of heater,andrequirementsthatmust be met to

include an optional 5-ft heat exchanger tube in the system.

Fromthedimensionsontheselectedconfiguration drawing, deter-

mine the building suspension points.

WARNING: Install heaters only in the

configurations illustrated or noted in the

configuration booklet (Form RZ 607 in the

Owner's Envelope). Don't install a heater in

aconfigurationthatisnotpermissibleforthat

BTUH input capacity or length. See

Paragraph 3 and Hazard Levels on page 2.

Suspension Point Requirements:

1) Supporting structure must have a minimum load-carrying ca-

pacity of 200 lbs. (Do not suspend the heater from gas piping

orelectricalconduit.)

2) Clearances to combustibles must be observed. See Paragraph

3) Heatermustbesuspended by hanging chains.Chain,"S"hooks,

and/or turnbuckle length at each suspension point must be a

minimum of 12 inches. All chains suspending tubes must be

plumb. See Figure 2 for dimensions for burner/control box

suspension points.

4) Refer to Paragraph 5 for recommended minimum mounting

heights.Theinstalleris responsible for properly andadequately

fastening the chains to the building and supporting the weight of

the heater. Depending on the type of building construction at the

installationsite,eitherattach the chain support directlytothebuild-

ing or attach and extend a support to the location needed.

SUPERSTRUT®brackets or a comparable metal strut material is

well suited as a support structure that requires numerous suspen-

sion points.



Chainmustaccepta1/4""S"hookandhaveaminimumof200

lbs working load rating. Use either optional hanging chain kit

(Option CK11) or field-supplied chain.



Since the heater must be level, turnbuckles are recommended at the "S"

hook connections on the heater. Turnbuckles must be of steel or malleable

iron. Use either optional turnbuckle kits (Options CK12-20) or field-sup-

pliedequivalent.



Aminimumlengthof12"ofchain,"S"hooksand/orturnbuckleisrequired

at each suspension point.



Chains suspending tubes must be plumb when the heater is installed.



Suspension points required for the burner/control box are illustrated in

Figure 2.

Thistubular radiant heater

must be suspended with

chainbecausethetubes will

expand when heated. The

overall length of a straight

system will expand ap-

proximately as shown in

thetable.

Straight System Expansion Length

70 ft 2-3/4" (70mm)

60 ft 2-3/8" (60mm)

50 ft 2-1/8" (54mm)

40 ft 1-7/8" (48mm)

30 ft 1-1/2" (38mm)

20 ft 1-1/8" (29mm)

High Altitude Conversion Kits (full rate operation)

Gas feet meters 50 75 100 125* 150* 175 200

2001-4000 610-1219 U.S. or Canada** 126440 120880 120882 132664 132667 132670 132673

4001-6000 1220-1828 U.S. Only 126442 120884 120886 132682 132685 132688 132691

6001-8000 1829-2438 U.S. Only 126444 120888 120890 132700 132703 132706 N/A

2001-4000 610-1219 U.S. or Canada** 126441 120881 120883 132676 132679 N/A N/A

4001-6000 1220-1828 U.S. Only 126443 120885 120887 132694 132697 N/A N/A

6001-8000 1829-2438 U.S. Only 126445 120889 120891 132712 132715 N/A N/A

**Canadian high altitude installations must choose kits designed for 2001-4000 ft (610-1219M) elevation.

TR/TR-H

*Kits for Sizes 125 and 150 may only be used to change a Model TR-H from one high altitude elevation to another.

DO NOT attempt to field convert asea level ModelTR125 or TR150 to high altitude.

Natural

Gas

Only

Propane

Gas

Only

TR/TR-H TR-H only

Structural support added by the

installer or part of the building structure

A + A/4

At least 12

(305mm) of

chain MUST

BE used for

proper expansion

movement.

Optional turnbuckle

Use for convenience

if space permits.

Figure2-Suspension

DimensionsandHanging

Arrangementof the

Burner/Control Box

Form RZ-NA-I-TR, Page 6

9. Prepare and Install Burner/Control Box and Combustion Chamber

Tube Figure3A - CombustionAirInletSideof

Burner/Control Box

Figure 3B - Remove factory-installed air restrictor plate

and replace with the restrictor plate in the parts bag

Figure 4 - Burner/Control Box Showing Location of

theBurnerOrifice

BurnerOrifice

--Remove with

9/16" open end

wrench

Model Size is stamped

in the upper left hand corner

Combustion Air

Restrictor Plate

10-32 Nuts

Rubber tubing (attaches to

combustion airflow sensor)

Combustion Airflow Sensor

There are very important steps that must be followed to prepare, sus-

pend, and assemble these tubular radiant heaters. Preparing the heater,

suspension, and field assembly are the responsibility of the installer.

Follow all instructions carefully.

STEP 1) Prepare Burner/Control Box

All burner/control boxes require some field preparation. The type of

preparation depends on how the unit was ordered and where it will be

installed.Determine which of these six situations matches your applica-

tion and follow the appropriate instructions. The first three are for units

ordered by specific size; the last three are for burner/control box pack-

ages that cover two sizes. (Refer to Paragraph 6 for further explanation

on packaging.)

•Theunitwasorderedas a specific size to be installed at a specific

elevation (sea level or high altitude) and is being installed at

thatelevation. Proceed to STEP 2 of these Preparation instructions.

•Theunit was ordered asa specific size tobe installed atsea level

to 2000 ft and is being installed above 2000 ft (NOTE: Does not

apply to Sizes 125 and 150). Install the high altitude kit selected in

Paragraph7. Follow the instructions provided with the kit. When the

kit is installed, proceed to STEP 2 of these Preparation Instructions.

•The unit was ordered as a specific size to be installed at an

elevationabove2000ftand is being installed at a different eleva-

tionabove2000 ft. Install the high altitude kit selected in Paragraph

7. Follow the instructions provided with the kit. When the kit is

installed, proceed to STEP 2 of these Preparation Instructions.

•The burner/control box was ordered as a TR75/100, TR125/

150, or TR175/200 and will be installed at sea level to 2000 ft as

a Size 75, 125, or 175. Proceed to STEP 2 of these Preparation

instructions. (The Size Conversion Kit shipped with the burner/con-

trol box will not be used.)

•The burner/control box was ordered as a TR75/100 or TR175/

200andwillbeinstalled above 2000 ft elevation asaSize75,100,

175, or 200. Install the high altitude kit selected in Paragraph 7.

Follow the instructions provided with the kit. When the kit is in-

stalled, proceed to STEP 2 of these Preparation Instructions. (The

Size Conversion Kit shipped with the burner/control box will not be

used.)

•The burner/control box was ordered as a TR75/100, TR125/

150, or TR 175/200 and will be installed at sea level to 2000 ft

elevation as a Size 100, 150, or 200. Follow the instructions below

toinstall the size conversion kit shipped with the burner/control box.

Instructions to Change the Combustion Air Restrictor Plate and

Burner Orifice to Field Convert a Burner/Control Box from Size

75,000 to 100,000; or from Size 125,000 to 150,000; or from Size

175,000 to 200,000.

PartsRequired: Conversion package in the burner/control box includ-

ing a burner orifice, a combustion air restrictor plate, and conversion

labels.

1. Conversion Size Labels (one on the restrictor plate, one or two

loose) -- Fill-in all labels stating that the burner/control box has been

converted to either a Size 100,000, 150,000 or 200,000.

2. ChangeAir Restrictor Plate -- Refer to Figure 3A and identify the

combustion air inlet on the side of the burner box. Locate the paper

warninglabelonthefactory-installedcombustion air restrictor plate.

Attached to the restrictor plate is a combustion air sensor tube and

bracket. See Figure 3B.

Remove the hardware (screws and/or nuts) holding the combustion

air sensor bracket and the restrictor plate. Remove and discard the

factory-installedcombustionairrestrictor plate. Using the same hard-

ware, attach the combustion air restrictor plate shipped in the parts

bag. Re-attach the combustion air flow sensor bracket.

3. Change Burner Orifice - Open the hinged access panel on the

bottom of the burner/control box. Locate the burner orifice. See Fig-

ure 4. Using a 9/16" open-end wrench, remove and discard the fac-

tory-installed burner orifice. Install the burner orifice shipped in the

parts bag. Close the bottom panel.

Combustion Air Restrictor Plate

Warning label which

must be removed

Static Pressure Port

Combustion Airflow Sensor

Tubing to Pressure Switch

IMPORTANT

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 7

Instructions:

1. Refer to Figure 6 and identify the combustion air inlet side of the

burner box. If paper warning label is attached, remove.

2. Position the combustion air inlet cover over the air inlet opening.

Usingthe four screws in the parts bag, attach the coverto the burner/

control box. See Figure 7.

Figure7-AttachCombustionAirInlet Cover(Field-

attachment of the combustion air inlet cover is

required with either an indoor or outdoor combustion

airsupply.)

Figure 6 - CombustionAir Inlet Side of the Burner/

Control Box

Figure 5 - CombustionAir Inlet Cover

4. Adhere label(s) to the burner/control box directly below the rating

plate.

Field size conversion is complete. Continue to STEP 2) Install Com-

bustion Air Inlet Cover.

STEP2--InstallCombustionAir Inlet Cover-- Applies to allburner/

control boxes.

Fromthehardwarebagintheburner/controlbox,removetheinstruction

sheet and the parts listed in Figure 5.

STEP 3 -- Assemble and Suspend the Burner/Control Box and

Combustion Chamber Tube

Use these parts (from the hardware bag) to assemble the box and tube.

Qty Description P/N

4 Lockwashers 1333

4 Nuts 1035

1 Gasket 116029

Instructions:

1. Identify the Combustion Chamber Tube -- The tube with the

square flange welded to one end.

2. Attach Combustion Chamber Tube to Burner/Control Box --

Slidethegasketovertheboltsontheburnerendoftheburner/control

box(SeeFigure8B).Positionthe tube so that the hangers (on the end

of the tube) are toward the top and bottom. See Figure 8A.

Slide the flange over the bolts. See Figure 8B.

Use the washers and nuts to attach the combustion chamber flange

securely to the burner/control box. (The bolts are pre-welded to the

inside of the box.)

3. Suspend the Combustion Chamber Tube/Burner Box Assem-

bly

Parts needed from the hardware bag: 3 "S" Hooks

Attachthetwo"S"hookstothehangerbrackets on the burner/control

box. Attach the third to the top hanger bracket on the end of the

combustionchambertube. Suspend theassemblyfromthe three hang-

ing chains. Refer to Figure 9.

The illustration in Figure 9 includes turnbuckles. Turnbuckles are

Figure 8A - End

ofCombustion

ChamberTube

Showing

Position of

Hanger

Brackets

Position hanger

bracketsat the top

andbottom

Burner/Control Box

Fiberglass

Gasket

Combustion

Chamber

Lockwashers

5/16-16 Nuts (tighten alternately)

Figure8B-Attachthe Combustion

ChamberTubetotheBurner/Control

Box.Alternatelytighten nuts.

Attach"S" Hook

Attach

"S"

Hook

Attach

"S"

Hook

Figure 9 -

SuspendedBurner/

Control Box with

attached

Combustion

ChamberTube

Combustion Air Restrictor Plate

Warning label which

must be removed

Static Pressure Port

Combustion Airflow Sensor

Tubing to Pressure Switch

IMPORTANT

Qty Description

1 CombustionAir

Inlet Cover

4 Screws, #10 x

1/2" long

Form RZ-NA-I-TR, Page 8

10. Install the Heat ExchangerTube(s),Tail PipeTube, andTurbulator

Strip

Thereare very important steps that must be followed to suspendand assemble these tubular radiant heaters. Preparing the heater, suspension, andfiled

assembly are the responsibility of the installer. Follow all instructions carefully. Throughout the instructions, continued reference to the installation

configuration drawing is required.

1) Identify the Heat Exchanger and Tail Pipe Tubes and the Parts Packaged with them (Refer to the illustrations in Figures 10A-10E and

the configuration drawing in the configuration booklet):

Connect each tube as it is suspended. If your configuration requires a

turbulatorstripbeforea"U"or"L"tube,inserttheturbulatorstripbefore

the "U" or "L" tube is connected. Follow the instructions in Step No. 3)

onpages9-11,andinstalltwosectionsofturbulatorstrip.(Thiswillonly

2) Suspend and Connect the Heat Exchanger Tubes and Tail Pipe

-- Follow the Configuration Drawing Layout

A parts bag is supplied with each

heater tube and tail pipe. The bag

contains hardware needed to

connect two tubes, an "S" hook,

and an instruction sheet.

Figure 10C -

Connection

Hardware Parts Bag,

P/N 116017

Figure 10D - One Section of the

Field-InstalledTurbulatorStrip

Figure 10E -

Reflector,

Reflector

Retainer, and

Reflector

Bracketand

Hardware(U-

boltand nuts)

Reflector

Retainer

Bracket

One 10' reflector and two reflector retainers and two brackets with hardware per 10' straight tube.

Optional 5' heat exchanger tube includes a 5' reflector and two sets of retainers and brackets with hardware.

Follow installation instructions in Paragraph 11.

Figure 10A - Heat Exchanger

Tubes (Straight,"U",and "L")

"U"

Tube

"U"and "L" tube packages include

field-assembledreflectors

Expanded

End

Two Hanger

Brackets

10' Straight Tube

5' Straight Tube

Figure 10B - Tail Pipe Tube (10')

Expanded

End

SwedgedEnd withOne

Hanger Bracket

"L"Tube

Clamping

Rings

Lock

Washers

Square

Nuts

Bolts

9. Install Burner/Control Box and Combustion ChamberTube (cont'd)

3. Suspend the Combustion Chamber Tube/Burner Box Assembly (cont'd)

recommended for use in leveling the heater. If turnbuckles are included in heater suspension, use only optional turnbuckles or field-supplied

turnbuckles of steel or malleable iron.

4. DrawBolts -- There are two 4-1/2" long bolts left in the hardware bag. These bolts are provided as an aid in connecting tubes. Keep the bolts and

follow the tube connection instructions in Paragraph 10.

occur when installing a 40' to 70' system in a configuration where a "U"

or "L" tube connects directly to the tail pipe.)

Suspending Straight (5-ft or 10-ft) Heat Exchanger Tubes and

"U" Tubes - Attach an "S" hook to the hanger bracket and suspend the

tubefromthenexthangingchain.Slidetheexpandedendovertheprevi-

ous tube and make the connection.

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 9

Clamping

Rings

Lock

Washers

Square

Nuts

Bolts

1) Connection Hardware

3) Step 2

Combustion

productsflow

direction

SuspendedTube

Section

Tube Sectionto be

added(suspend at

oppositeend)

2) Step 1 4) Connected Tubes

Tighten

bolts

securely.

IMPORTANT: If tubes do not slide together easily,follow

Installation Tip below.

Installing"L"Heat ExchangerTubes-"L"tubes do not require a suspension point.When the configurationrequiresan"L"tube, slide the expanded

end over the previous tube and make the connection.

Suspending the Tail Pipe -Attach an "S" hook to the hanger bracket and suspend the tube from the last hanging chain. Slide the expanded end over

the previous tube and make the connection.

Connecting the Tubes - Using the hardware in the bag packaged with each tube, follow the steps in Figure 11 to connect the tubes.

Be certain inner tube mates to

bottomofexpansion in outer tube.

Figure 11 - Steps for Connecting Tubes

InstallationTip: If tubes are difficult to slide tubes together, use the two 4-1/2" long bolts from the burner/control box

parts bag to draw the tubes together. Follow illustrated Step 2 (Figure 11, page 9), using the 4-1/2" bolts.Alternate

tightening the upper and lower bolts. When the tubes are in position, remove one of the long bolts, replace with a

connectingbolt,and secure. Repeat, replacing the other bolt. Re-use the 4-1/2" bolts as needed.

Figure 12B - Interlock Sections asTurbulator Strip is

Installed

Figure 12A -Turbulator Strip Section

3) Install the Turbulator Strip -- Locate turbulator strip sections. Instructions: Install a turbulator strip in a tube only after

that tube has been suspended and connected to the previous

tube. Refer to Figures 12A and 12B. Install the turbulator

strip by sliding a section into the tube, connecting the next

section,and slidingtheconnected sectionsonintothe tube(s).

Followtheselectedconfigurationdrawingintheconfigura-

tion booklet and the instructions in the chart on page 11.

Slide Together Turbulators

Turbulators interlocked ready

for insertion into heat exchanger

tubes.

System Length 20 30 40 50 60 70

Tube Package(s) E F E G F G E G G F G G

Full Size Turbulator

Section, 37-1/8" long 333232322322

Small Turbulator

Section, 26" long 101000100000

Form RZ-NA-I-TR, Page 10

10. Installing the System (cont'd)

Configuration

Qty Size** Qty Size**

3 37-1/8" 3 37-1/8"

50 1 26" 1 26"

75 3 37-1/8" 3 37-1/8"

1 26"

50 3 37-1/8" 3 37-1/8"

75 0 - 8000 ft* All

100

75 3 37-1/8" 3 37-1/8"

100 5 37-1/8" 5 37-1/8"

1 26"

5 37-1/8" 5 37-1/8" 2 long sections before

"U" or "L" is connected Into end of straight

tube before "U" or "L"

1 26" 3 long sections after tail

pipe is connected Into exhaust end of tail

pipe

5 37-1/8" 5 37-1/8"

1 26"

5 37-1/8" 5 37-1/8" 2 long sections before

"U" or "L" is connected Into end of straight

tube before "U" or "L"

1 26" 3 long sections after tail

pipe is connected Into exhaust end of tail

pipe

5 37-1/8" 5 37-1/8"

2 sections before "U" Into end of straight

5 37-1/8" 5 37-1/8" or "L" is connected before "U" or "L"

3 sections after tail pipe

is connected Into exhaust end of tail

pipe

175 2001-8000 ft* All 5 37-1/8" 3 37-1/8" 3 sections after tail pipe

200 2001-6000 ft* is connected

150 0 - 8000 ft* Straight heat exchanger tube adjacent

to the tail pipe (See Figure 12C) 5 37-1/8" 5 37-1/8" All 5 sections after tail

pipe is connected Into exhaust end of tail

pipe

5 37-1/8" 5 37-1/8" 2 sections before "U"

or "L" is connected Into end of straight

tube before "U" or "L"

3 sections after tail pipe

is connected Into exhaust end of tail

pipe

175 2001-8000 ft* All 5 37-1/8" 3 37-1/8" 3 sections after tail pipe

200 2001-6000 ft* is connected

Straight heat exchanger tube adjacent

to the tail pipe (See Figure 12C) 7 37-1/8" 5 37-1/8" 5 sections after tail pipe

is connected Into exhaust end of tail

pipe

60 7 37-1/8" 5 37-1/8" 2 sections before "U" Into end of straight

ft or "L" is connected before "U" or "L"

3 sections after tail pipe

is connected Into exhaust end of tail

pipe

175 2001-8000 ft* All 7 37-1/8" 3 37-1/8" 3 sections after tail pipe

200 2001-6000 ft* is connected

Straight heat exchanger tube adjacent

to the tail pipe (See Figure 12C) 7 37-1/8" 5 37-1/8" 5 sections after tail pipe

is connected Into exhaust end of tail

pipe

65 or 0 - 2000 ft 7 37-1/8" 5 37-1/8" 2 sections before "U" Into end of straight

70 ft or "L" is connected before "U" or "L"

3 sections after tail pipe

is connected Into exhaust end of tail

pipe

175 2001-8000 ft* All 7 37-1/8" 3 37-1/8" 3 sections after tail pipe

200 2001-6000 ft* is connected

* To install a heater above 2000 ft elevation, that heater must either be factory-built for the required elevation or field-converted to that

elevation. Check the ratingplate or field conversion label for allowable altitude.

** Metric equivalent: 37-1/8" is 943mm; 26" is 660mm

Into exhaust end of tail

pipe

Into exhaust end of tail

pipe

Into exhaust end of tail

pipe

All 5 sections after tail

pipe is connected Into exhaust end of tail

pipe

Into exhaust end of tail

pipe

Into exhaust end of tail

pipe

Used in the

Configuration Quantity, Type and

WHEN to Install WHERE to Install

Turbulator Sections (Some sections may not be used; follow instructions.)

Length

Strai

Tubes

BTUH

Size

(000)

(Must be illustrated in the

Suspension Dimension and

Configuration Booklet.)

In Tube

Packages

Elevation

"U" or "L" tube adjacent to the tail

pipe (See Figure 12D)

"U" or "L" tube adjacent to the tail

pipe (See Figure 12D)

Straight heat exchanger tube adjacent

to the tail pipe (See Figure 12C)

"U" or "L" tube adjacent to the tail

pipe (See Figure 12D)

"U" or "L" tube adjacent to the tail

pipe (See Figure 12D)

Straight heat exchanger tube adjacent

to the tail pipe (See Figure 12C)

Straight heat exchanger tube adjacent

to the tail pipe (See Figure 12C) 5 long sections after tail

pipe is connected

100

125

150 0 - 8000 ft*

"U" or "L" tube adjacent to the tail

pipe (See Figure 12D)

5 long sections after tail

pipe is connected

20 ft

25 ft

30 ft

35 ft

40 ft

45 ft

100

125

100

125

50 ft

55 ft

Into exhaust end of tail

pipe

Into exhaust end of tail

pipe

All 3 sections after tail

pipe is connected

All 3 sections after tail

pipe is connected

All 3 sections after tail

pipe is connected Into exhaust end of tail

pipe

Into exhaust end of tail

pipe

"U" or "L" tube adjacent to the tail

pipe (See Figure 12D)

Into exhaust end of tail

pipe

Into exhaust end of tail

pipe

All 4 sections after tail

pipe is connected

3 long sections after tail

pipe is connected

0 - 8000 ft*

St raigh t

"U" or "L"

All

175

200 0 - 2000 ft

175

200 0 - 2000 ft

175

200

175

200 0 - 2000 ft

150 0 - 8000 ft*

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 11

Straight

Tube

Tail Pipe

Straight

Tube

Tail Pipe

Straight

Tube

Tail Pipe

LTube

Tail Pipe

Straight

Tube

Straight

Tube

U

Tube

Tail Pipe

Figure 12C - Examples of Configurations with theTail PipeAdjacent to a Straight Heat ExchangerTube

To install turbulator:

1) Attachthetailpipeto the straight

pipe.

2) Insertaturbulatorsection intothe

tailpipe.

3) Interlock turbulator sections as

they are inserted (See Figure

12B).

4) Continue until all required sec-

tions are in place.

Figure 12D - Examples of Configurations that require more than three turbulator

strips and have the tail pipe adjacent to an "L" or "U" heat exchanger tube To install turbulator:

1) Beforeattachingthe "U" or "L"tube,

inserttwointerlocked turbulator sec-

tions (See Figure 12B) into the last

straight tube.

2) Attachthe"U"or "L"heatexchanger

tube to the straight tube.

3) Attachthetail pipe to the "U" or "L"

tube.

4) Insert three interlocked turbulator

sections into the tail pipe.

4) Level the System and Close "S" Hooks

Tubes must be level. Use a spirit level and adjust the turnbuckles or chain links. Close all "S" hooks being careful not to change the chain length.When

the system is level, re-check to be sure that all bolts connecting the tubes are tightened securely.

Straight systems should be straight; systems with "L" tubes should be at right angles; and "U" shaped systems should be parallel.

Summary of Number of Sections Required to "Build" Turbulator Strip

(NOTE: There may be sections in the packages that are not used.)

Elevation of

Installation (ft) BTUH Sizes

(000) Length

(Straight) Configuration No. of Sections used in

Turbulator Strip

20 ft Straight 4 (3 long, 1 short)

50-75 20 ft "U" or "L" 3

25 ft 3

0 - 8000 50-75-100 30 ft 3

75-100 35 ft Straight, 3

75-100-125 40 ft "U", 5

100-125 45 ft and 5

100-125-150 "L" 5

0 - 2000 175-200 50 ft 5

2001-8000 175-200* 3

0 - 8000 150 55, 60 ft 5

0 - 2000 175-200 55, 60, 5

2001-8000 175-200* 65, 70 ft 3

*Size 200 - Maximum elevation is 6000 feet.

Form RZ-NA-I-TR, Page 12

3. Install the Reflector, Optional Side Shield, and Reflector

Retainers (Refer to Figure 15)

a) AllInstallations--Nestlethe reflector inside theflangededges

of the reflector brackets.

b) Installations with Optional

Side Shield -- The side shield is

modular with two sections per

10-fttube. When side shields are

includedinthe installation, drill a

9/64" hole in each tube joint and

insert the screw provided (See

Figure 14). Hang the side shield

sections over the ends of the re-

flectorbrackets(Maximum angle

withsideshield is 30°).IMPOR-

TANT: Install side shield on

one side of the system only.

Figure 14 - With

optional side shield,

insert a screw in each

tube joint to prevent

tubes from turning

1/2" (13mm)

Drill

9/64"

hole

Reflector

Retainer

U-bolt

Figure 16A -

Optional

ReflectorGap

Cover

c) All Installations -- Position a wire retainer over the reflector and hook the

ends through the holes in the reflector brackets. Install a retainer at each

reflectorbracket.

d) All Installations -- Repeat the instructions to install reflectors on each

straightsectionof tube in the system.Donotoperatetheheaterwithoutall

reflectorsinstalled.

4. Install Optional Reflector Gap Covers -- The optional gap covers are

designed to provide the infrared tubular

systemwithacontinuousreflectorwhile

still allowing for system expansion. If

optionalreflectorgap covers areincluded

in the installation, follow the illustrated

instructions included in the option pack-

age.Reflectorsonsystemswithgap cov-

ers cannot be rotated.

5.Install Optional ReflectorEnd Cover -

-Theoptionalendcoversaredesigned to

"close"the verticalspaceon boththecom-

bustionchamberendandthetailpipeend

ofthe reflectorlength.The endcoversmay

only be installed on units that have op-

tional reflector gap covers. Follow the il-

lustrated instructions included in the op-

tionpackage.

6.RotatingReflectors -- Reflectors on straight systems without reflector gap

covers or a side shield may be angled up to 45° by rotating the U-bolt and

reflectorbracket.

Reflectors with gap covers cannot be rotated.

Reflectors on straight systems with a side shield may be angled up to 30°.

The side shield must hang vertically.

Figure

16B -

Optional

Reflector

End

Covers

WARNING: Do not operate heater without reflectors. See Hazard Intensity Levels, page 2.

Packagedwitheachstraighttubeisareflector, two reflector brackets with hardware, and two reflector retainers (Refer to Figure 10E on page 7). Follow

the instructions to install a reflector on all straight tubes.

NOTE: If the installation includes an optional side shield, the side shield package (Options CD13-20) includes two additional reflector brackets and

retainers for each 10-ft tube.All four brackets must be attached to each 10-ft tube before installing the reflector.

Reflector Installation Instructions

11. Install Reflectors (including Standard Reflectors, Optional Side

Shield and Optional Reflector Gap and End Covers)

1. From thetable, determinethe

number of brackets (and re-

tainers)required pertube and

select the appropriate illus-

tration(Figure13Aor 13B).

2. InstallReflector Brackets

(See Figure 13A or 13B)

a) Slide the U-bolt over the tube at the determined location.

b) Positionthereflectorbracketasillustrated(endflangesextend-

ingupward)and slide the bracketover the bolt ends.Adjustthe

bracket to the desired reflector angle (0-45o). Use the nuts to

attach the reflector bracket to the U-bolt.

c) Repeat the procedure to install all required brackets.

Tube

Length Side

Shield Number of

Brackets Refer to

Figure

10-ft Without 2 13A

10-ft With 4 13B

5-ft Without 2 13A

5-ft With 2 13B

Figure 13A - Locations for Reflector Brackets for

Systems withoutan Optional Side Shield Figure 13B - Locations for Reflector Brackets for Systems

with an Optional Side Shield

Optional

Side

Shield Reflector

Bracket

Figure 15 - Install Reflector,

SideShield (Optional), and

ReflectorRetainers

12

(305mm) 36 (914mm) 12

(305mm)

Optional 5-ft Heat Exchanger Tube

6 feet (1.8M) 2 ft

(610mm)

approximate

Reflector Bracket

U-Bolt

10-ft Heat Exchanger Tube

Optional

5-ft Heat

Exchanger

Tube

13

(330mm)

13

(330mm)

32-3 4

(832mm)

32-3 4

(832mm)

24-1 2

(622mm)

32-3 4

(832mm)

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 13

SpecificVent Requirements

1.Vent Pipe Length -The vent lengths shown in theVent Table are based on

(1) the maximum permissible resistance to flow at which each model size will

operate and (2) the potential for continuous condensing. Condensing in the

vent pipe should not occur after equilibrium has been reached when the sur-

rounding ambient temperature is 60°F unless otherwise noted (See Require-

ment No. 6, Condensation).

Do not exceed maximum vent length. Minimum vent length is 5 feet.

Use equivalents listed when calculating for elbows and optional dual vent

adapter (Option CC5).

12.Venting

Venting must be inaccordancewiththe National Fuel Gas Code Z223.1(NFPA

54) or CAN/CGA B149.1 and B149.2, Installation Code for Gas Burning

Appliances and Equipment, and all local codes.

ANSI standard applicable to this heater does not require venting categoriza-

tion; if such a requirement existed, this heater would be in Category III. (Cat-

egory III appliances have a positive-pressure vent requiring a gastight sealed

vent system.) These tubular infrared heaters have been designed to operate

safely and efficiently with vent pipe lengths shown in theVent Length Table.

Vent systems may either be vertical or horizontal. The type of vent required

depends on the size of heater and the vent run configuration.

Type ofVent Required byVent Category

Model Sizes 50-125 150-200

- with a Horizontal Vent Run Category III Category III

- with a Vent Run that is at least one-half Category I

vertical (using equivalent lengths from the or Category III

Vent Length Table below) Category III

- with a Dual Vent Adapter (Option CC5) Category III Category III

Vent terminal end may be either single-wall pipe or double-wall pipe.A vent

terminal cap is required. Install a vent cap supplied as Option CC1 or a fully-

comparable, field-supplied vent terminal cap such as a Type L BreidertAir-x-

hauster®. (Type L Air-x-hauster®is a trademark of The G. C. Breidert Com-

pany.) Dual venting of two units is permissible when using an Optional Dual

Vent Kit (Option CC5).

Comply with the specific requirements and instructions in the following para-

graphs.

2.Vent Pipe Type - Use only 4-inch diameter vent pipe.

If the type of vent required is Category III (refer to table

above),useeither a vent pipe approved for a Category III heater or

appropriatelysealed 26-gauge galvanizedsteelor equivalentsingle-

wall pipe.

Ifthe type of vent required isCategory I (refer to table above),

unsealed26-gauge galvanized steel or equivalent single-wall pipe

or double-wall (Type B) vent pipe may be used.

3. Vent Pipe Joints - Vent system joints depend on the vent cat-

egory and the type of pipe being used.

If installed as a Category III appliance and using single-wall

vent pipe, join pipes with at least two non-corrosive screws per

vent pipe joint and seal all joints to prevent leakage of flue gases

into the building. For sealing joints, the use of Aluminum or

TEFLON®(trademark of DuPont Corporation) tape suitable for

550°F is recommended (required in California).Vent tape of this

type is available from the heater manufacturer as P/N 98266.

If installed as a Category III appliance and using vent pipe

specifically approved for Category III vent systems, follow

the pipe manufacturer's instructions for proper sealing.

If installed as a Category I appliance (allowed only for Sizes

50-125 when at least half of the total equivalent length of the

ventsystemisvertical), use at least two non-corrosive screws per

ventpipejoint on single-wallpipeorfollow the pipemanufacturer's

instructions for joining double-wall pipe.

4.Attach Vent Pipe to Heater - The last heat exchanger section

(tail pipe) is designed to permit direct attachment of a vent pipe,

either straight or elbow.

Attach metal vent pipe using three non-corrosive screws spaced

equal distance apart. See Figures 17A and 17B.

Suspended

Tail Pipe

Non-corrosivesheetmetal

screws spaced approximately

120° apart

Single wall straight pipe section

Single wall

elbow or

Figure 17A -

AttachMetal

Vent Pipe to

Tail Pipe

If the system includes a "U" or "L" heat exchanger tube, the reflectors on

either adjacent side of the "U" or "L" reflector cannot be rotated and must

remain horizontal. All reflectors in a section or leg of the tubular system

should be at the same angle.

Tape joint with high temperature

aluminum tape or seal with high

temperaturesiliconerubbersealant.

Figure 17B - Seal

Tail Pipe and Vent

Pipe Joint

5.Vent System Support - Vent pipe support is especially impor-

tant with the tubular infrared system because of the added stress

which may be caused by expansion and contraction of the overall

system. Support lateral runs a minimum of every six feet using

non-combustiblematerial, such as steel strap or chain. Do not rely

on the heater for support of either horizontal or vertical vent pipe.

Vent Length Equivalent Length for

Max Min Max Min ft M ft M ft M

50 20, 25, 30 4 20 5 6.1 1.5 3 0.9 1-1/2 0.5 3 0.9

20, 25 4 45 5 13.7 1.5 6 1.8 3 0.9 6 1.8

75 30, 35 4 35 5 10.7 1.5 5 1.5 2-1/2 0.8 5 1.5

40 4 20 5 6.1 1.5 3 0.9 1-1/2 0.5 3 0.9

30, 35 4 45 5 13.7 1.5 6 1.8 3 0.9 6 1.8

100 40, 45 4 35 5 10.7 1.5 5 1.5 2-1/2 0.8 5 1.5

50 4 20 5 6.1 1.5 3 0.9 1-1/2 0.5 3 0.9

125 40, 45, 50 4 60 5 18.3 1.5 12 3.7 6 1.8 12 3.7

150 50, 55, 60 4 60 5 18.3 1.5 12 3.7 6 1.8 12 3.7

175 50, 55, 60,

65, 70 4 60 5 18.3 1.5 12 3.7 6 1.8 12 3.7

200 50, 55, 60,

65, 70 4 60 5 18.3 1.5 12 3.7 6 1.8 12 3.7

*Must be deducted from the total vent length of each heater.

Vent Length Table for Tubular InfraredHeaters

feet M 90°

Elbow 45°

Elbow

Dual

Vent

Adapter

Box*

Input Size (000)

Straight

Tube

Length

(ft)

Vent Diameter

(inches)

Form RZ-NA-I-TR, Page 14

6 ft

(1829mm)

minimum

Roof Flashing

Roof pitched

from 0 to 45°

6 (152mm)

minimum

Clearance to be

as specified on

Type B

(double wall)

vent pipe

Follow the instructions above to join double wall and single

wall pipe and to attach a vent cap to double wall pipe.

Vertical flue extension

to be 6 (152mm)

higher than anticipated

snow depth but no less

than 24 (610mm) above

the roof. Vertical pipe

extension must be

insulated.

Parapet or adjoining building

3 ft (914mm)

minimum

If the fresh air intake is

within 10 feet (3M) of the

flue extension, the flue

extension must be at least

12 (305mm) higher than

the fresh air intake.

Fresh air intake must

be 6 (152mm)

higher than antici-

pated snow depth.

6 ft

(1829mm)

minimum

Roof Flashing

Vertical flue extension must

be 6 (152mm) higher than

anticipated snow depth but no

less than 24 (610mm) above

the roof. Vertical pipe extension

must be insulated.

Parapet or adjoining building

Roof pitched

from 0 to 45°

An approved clearance

thimble for single-wall

vent pipe is required when

the flue piepe extends

throu

h combustible maerial.

Figure 18A -Vertical Vent Terminal Arrangements (drawings are not proportional; read all information)

6 ft

(1829mm)

minimum

Roof Flashing

Roof pitched

from 0 to 45°

Vertical flue extension

to be 6 (152mm) higher than

anticipated snow depth but no

less than 24 (610mm) above

the roof. Vertical pipe extension

must be insulated.

Parapet or adjoining building

Follow the instructions above to join double wall and

single wall pipe and to attach a vent cap to double wall pipe.

Clearance to be as specified on

Type B (double wall) vent pipe

6 (152mm)

minimum

Figure 18B -VerticalVent Terminal/Air IntakeArrangements (drawings are not proportional; read all information)

6 ft

(1829mm)

minimum

Roof Flashing

Roof pitched

from 0 to 45°

An approved clearance

thimble for single wall

vent pipe is required

when the flue pipe extends

through combustible

mat

rial

Vertical flue extension

to be 6 (152mm)

higher than antici-

pated snow depth

but no less than 24

(610mm) above the roof.

Vertical pipe extension

must be insulated.

3 ft (914mm)

minimum

Fresh air intake must

be 6 (152mm)

higher than antici-

pated snow depth.

If the fresh air intake is

within 10 feet (3M) of the

flue extension, the flue

extension must be at least

12 (305mm) higher than

the fresh air intake.

Parapet or adjoining building

INSTRUCTIONS FOR DOUBLE WALL PIPE INSTALLA-

TION: Material Required: Double wall (Type B) Vent Pipe (Note:

Use only one piece of double wall vent pipe.); a thimble designed for

double wall pipe (if construction is combustible); six 3/4" long

sheetmetal screws; the vent cap; and a tube of silicone sealant.

11.Venting (cont'd)

6. Condensation- If single-wall vent pipe is exposed to cold air or run

through unheated areas, it must be insulated. Where extreme conditions

are anticipated, install a means of condensate disposal.

7.VentTerminal andVent Cap- The vent system must be terminated

with the type of vent cap approved for use with this heater. The vent

terminal and vent cap must be the same diameter as the vent run. Use

either an optional (Option CC1) vent cap or equivalent such as a Type L

BreidertAir-x-hauster®.(Type LAir-x-hauster®is a trademark ofTheG.

C. Breidert Company.) A different style vent cap could cause nuisance

problems and/or unsafe conditions.

See the illustrations in Figures 18 and 19 for requirements of both verti-

cal and horizontal vent termination. Using either single or double wall

ventterminals is illustrated. Many local codes require the use of double-

wall (Type B) vent for the portion of vent pipe (terminal) on the outside

of the building.

If double-wall pipe is used in the vent terminal, follow the instructions

below to attach the vent cap and to connect the double-wall pipe to the

single-wall vent system.

Instructions to attachVENT CAP to DOUBLE WALL (Type B)

VENT TERMINAL

Look for the "flow" arrow on the vent pipe.Attach the vent cap to the

"exhaust" end of the double wall pipe.

1) Slide the vent cap inside the pipe.

2) Drill a hole through the pipe and the vent cap. (Hole should be

slightly smaller than the sheet metal screw being used.) Using a 3/4"

long sheet metal screw, attach the cap to the pipe.

3) Repeat Step 2) drilling and inserting two additional screws evenly

spaced (120° apart) around the pipe.

Instructions to connect the SINGLE WALL VENT system to a

DOUBLE WALL (Type B) VENT TERMINAL:

1) Slide the single wall pipe inside the inner wall of the double-wall

terminalpipe.

2)Drilla hole through both walls of the double wall pipeandthesingle

wallpipe.(Holeshouldbe slightly smaller than the sheet metal screws

being used .) Using a 3/4"long sheet metal screw, attach the two pieces

of pipe. Do not overtighten.

3) Repeat Step 2) drilling and inserting two additional screws evenly

spaced (120° apart) around the pipe.

4)To seal the annular opening (the gap between the single and double

wallpipe),runalargebead of silicone sealant in the opening. The bead

of sealant must be large enough to seal the opening, but it is not

necessary to fill the full volume of the annular area.

SINGLE WALL - Single wall vent run and single wall

terminalend DOUBLEWALL- Single wall vent runanddouble

wall terminal end

SINGLE WALL - Single wall vent run; single wall

terminal end; and single wall fresh air intake DOUBLE WALL - Single wall vent run; double wall

terminal end; and single wall fresh air intake

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 15

Air Inlet Terminal Clearance -- The bottom of the air inlet

terminal shall be located not less than one foot (30 cm) above

gradeandat least 6 inches (15 cm) above anticipated snow depth.

The distance of termination of the horizontal vent from adjacent

public walkways, adjacent buildings, openable windows, and

building openings must be in accordance with local codes , or in

the absence of local codes, must conform with the National Fuel

Gas Code. More stringent local codes supersede all provisions in

these instructions and in the National Fuel Gas Code. Minimum

clearances for the horizontal vent terminal are shown in the table

on the right.

NOTE:Maintaintherequired18"clearancefromthe wall to

the vent terminal cap for stability under wind conditions

and to protect the building. Products of combustion can cause

discoloration of some building finishes and deterioration of ma-

sonry materials.Applyinga clearsiliconesealantthatisnormally

usedtoprotectconcrete driveways can protect masonry materials.

If discoloration is an esthetic problem, relocate the vent or install

averticalvent.

HorizontalVentTerminal Clearances (See Figure 19)

Wall

Pitch flue pipe

down toward outlet

1/4 per foot for

condensate drainage. Note position of

vent cap openings.

18

(457mm)

minimum

6 ft (1829mm)

minimum

3 ft (914mm)

minimum

Roof or building overhang

Parapet or adjoining building

Clearance to be

as specified on

Type B (double

wall) vent pipe

Follow the

instructions

on page 14

to join double

wall and single

wall pipe and

to attach a vent

cap to double

wall pipe.

6 (152mm)

minimum

Wall

Approved

clearance

thimble is

required

when flue

pipe extends

through

combustible

material.

18

(457mm)

minimum

Pitch flue pipe

down toward outlet

1/4 per foot for

condensate drainage.

Note position of

vent cap openings.

6 ft (1829mm)

minimum

Parapet or adjoining building

Roof or building overhang

3 ft (914mm)

minimum

Wall

18 (457mm)

minimum

18

(457mm)

minimum

Fresh air intake cap

9

(

229mm

)

maximum

Pitch flue pipe

down toward outlet

1/4 per foot for

condensate drainage.

Note position of

vent cap openings.

Roof or building overhang

3 ft (914mm)

minimum

6 ft (1829mm)

minimum

Parapet or adjoining building

Approved

clearance

thimble is

required

when flue

pipe extends

through

combustible

material.

Note position of

vent cap openings.

6 ft (1829mm)

minimum

3 ft (914mm)

minimum

18

(457mm)

minimum

Clearance to be

as specified on

Type B (double

wall) vent pipe

Fresh air intake cap

9 (229mm)

maximum

6 (152mm)

minimum

Pitch flue pipe

down toward outlet

1/4 per foot for

condensate drainage.

Roof or building overhang

Parapet or adjoining building

Follow the

instructions

on page 14

to join double

wall and single

wall pipe and

to attach a vent

cap to double

wall pipe.

18 (457mm)

minimum Wall

Figure 19A - HorizontalVent TerminalArrangements (drawings are not proportional; read all information)

Figure 19B - HorizontalVent Terminal/Air IntakeArrangements (drawings are not proportional; read all information)

Structure Minimum Clearances for Vent

Termination Location (all

directions unless specified)

Forced air inlet within 10 ft (3.1m) 3 ft (0.9m) above*

Combustion air inlet of another

appliance 6 ft (1.8m)

Door, window or gravity air inlet 4 ft (1.2m) horizontally

(any buildingopening) 4 ft (1.2m) below

3 ft (0.9m) above

Electric meter, gas meter ** and

relief equipment 4 ft (1.2m) horizontally

Gas regulator ** 3 ft (0.9m)

Adjoining building or parapet 6 ft (1.8m)

Grade (ground level) 7 ft (2.1m) above

*This heater is approved for installation as illustrated in Figure 19B.

**Do not terminate the vent directly above a gas meter or service regulator.

SINGLE WALL - Single wall vent run and single wall

terminalend DOUBLEWALL - Single wall ventrun and double

wall terminal end

SINGLE WALL - Single wall vent run; single wall

terminal end; and single wall fresh air intake DOUBLE WALL - Single wall vent run; double wall

terminal end; and single wall fresh air intake

Form RZ-NA-I-TR, Page 16

6 (152mm)

clearance to combustibles

Dual Vent

Adapter Box

Approved thimble required when the flue pipe

extends through combustible materials.

6 ft (1829mm)

maximum

6 ft (1829mm)

minimum

Vent pipe

from heater

Vent pipe

from heater

Vertical extension must be 6 (152mm)

higher than anticipated snow depth

but not less than 24 (610mm) above

the roof

Roof Flashing

Parapet or adjoining bulding

Single wall outer dual vent pipe

Single wall inner dual vent pipe

Roof or building overhang

3 ft (914mm)

minimum

6 ft (1829mm)

minimum

18 (457 mm)

minimum

6 (152mm)

clearance to combustibles

Dual Vent

Adapter Box

Wall

6 ft (1829mm)

maximum

Parapet or adjoining building

Pitch flue pipe down toward outlet 1/4 inch

per foot for condensate drainage.

Approved thimble required when the flue pipe

extends through combustible materials.

Single wall outer dual vent pipe

Single wall inner dual vent pipe

Figure 20B - Horizontal DualVent

TerminalArrangement

Figure 20A -Vertical

DualVentTerminal

Arrangement

11.Venting (cont'd)

VentTerminal Arrangements (cont'd)

UnventedInstallation -- These tubular radiant heaters areapproved for

operation without an outdoor vent. Before installing a tubular infrared

heater in the unvented mode, extreme care should be exercised in exam-

ining the building atmosphere and structure. Fresh air requirements

are4 CFM/1000 BTUH fornatural gas and 5CFM/1000 BTUH for

propane gas.

•Do not operate in the unvented mode when dust or dirt are present.

•Do not operate in the unvented mode in a building where contami-

nants are in the air that will produce a toxic gas when burned or

exposed to high temperatures.

NOTE:If either of the above situations exist, it is recommended that

a vented system with an optional combustion air inlet be installed.

•Do not operate in the unvented mode if there is any doubt about the

quality of the insulation in the building. Unvented operation in a

building that has an uninsulated roof or that may have uninsulated

structural members partially exposed to the outdoors may result in

condensation. The condensation may be severe enough to drip and/

or cause corrosion.

•Do not install in the unvented mode with outside combustion air

unless the inlet air cap is at or below the plane of the heater.

When installing a tubular infrared heater in the unvented mode, a vent

cap must be used and must be installed inverted as illustrated in Figure

21.

When a heater is operated without being vented to the outdoors, "TOP"

clearance to combustibles changes to 18 inches (See Paragraph 4).

WARNING: Dual venting of two heaters is permitted only when using the Dual Vent Kit, Option

CC5.(RefertoFigures 20A and 20B.) Noothermanifoldingofventruns is permitted due topossible

backpressureandrecirculationofcombustion products into the building. See Hazard Levels, page

Duel Venting -- By using the Dual

Vent Option Kit, Option CC5, two

heatersmayusethe same vent termi-

nal. No other dual venting arrange-

ment is approved.

Follow the installation instructions

andrequirementsincluded in theOp-

tionKit.SeeVentTerminalArrange-

ments in Figures 20A and 20B.

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 17

Figure 21 - InvertTerminal Cap on IndoorVent

90°

Elbow

VentCap

Suspended

Tail Pipe

Attachvent cap to 90°

elbowusing three non-

corrosive sheetmetal

screwsspaced

approximately 120° a part.

Attach90° elbow to tail pipe using three non-

corrosive sheetmetal screws spaced

approximately 120° a part.

13. Combustion Air

The burner is equipped with a centrifugal blower to provide combus-

tionair.The air for combustion can come eitherfrom the heated space

orbepipeddirectlyfromthe outside. Combustion air should be piped

from the outside if (1) the pressure in the building is negative, (2) the

atmosphere is dirt laden, (3) the atmosphere contains any substance

that will cause toxic gas when passed through a flame, or (4) the

heater is installed in a tightly closed room that does not provide re-

quired air for combustion.

If drawing combustion air from the heated space, the screened

combustion air opening on the burner box must be kept clean. Main-

tain a minimum 12" clearance from the combustion air inlet opening.

If the heater is located in a tightly closed room and is not equipped

withacombustionairinletpipe,provisionmustbemadetosupplyair

for combustion to the room.

The requirements for combustion and ventilation air depend upon

whether 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 aggregate input rating of all

appliances installed in that space. Under all conditions, enough air

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

condition within the equipment room or space.

Donot install a unit in a confined space without providing wall open-

ings leading to and from this space. Provide adequate openings near

floor and ceiling for ventilation and air for combustion, as shown in

Figure 22, depending on combustion air source as noted below.

AddtotalBTUHofall 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 building -- openings 1 square inch free area per

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

opening. See (1) in Figure 22 above.

Confined

Space

(3)

(1)

(1) (2)

(2)

Figure22-ConfinedSpace:

Aspace whose

volume is less

than 50 cubic

feet per 1000

BTUHof the

installed

appliance

inputrating.

2. Airfromoutside through duct -- openings 1 square inch free area per

2000 BTUH. See (2) in Figure 22 above.

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

BTUH. See (3) in Figure 22 above.

NOTE: For further details on supplying combustion air to confined space,

see National Fuel Gas Code Z223.1 (latest edition).

If directly piped outside combustion air is required, the burner/control box

is designed to accommodate attachment of a 4" diameter inlet air pipe. For

outside combustion air, use optional inlet air kit, Option DE2. Follow the

instructions included with the kit. The inlet air pipe should be 4" diameter

pipe of a noncorroding material. The maximum length of the inlet air pipe

mustnotexceedthe length shownin the CombustionAirInletLengthTable

below. If the inlet air pipe passes through moisture-laden air, insulation or

doublewalltubingmaybe needed to prevent condensation on the outside of

the pipe. Use the combustion air inlet cap supplied with the option kit.A

different type of combustion air inlet cap could cause nuisance problems

and/or unsafe operating conditions.

Iftheairinletterminalislocatedadjacenttothe exhaust terminal, the termi-

nals must be separated by a minimum distance of three feet. The only

exception is when the air inlet is located directly below the horizontal vent

cap. The required clearance between an air inlet terminal located directly

below the vent cap is 18 inches as illustrated in Figure 19B. See Figures

18B and 19B in Paragraph 12 for illustrations and clearance requirements

ofan air inlet terminal located adjacent to the heater vent terminal.

14. Gas Piping and Pressures

Allpipingmustbe in accordance with requirements outlined in theNational

Fuel Gas Code ANSI/Z223.1a (latest edition) or CAN/CGA-B149.1 and

B149.2, published by the Canadian Gas Association (See Paragraph 1).

Gassupply piping installation should conform with good practice and with

local codes.

Heaters 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.

The gas supply must have sufficient pressure to supply the burner plus any

other gas-fired appliances. Gas Supply pressure required at the burner

(measuredwith a manometer):

BTUH Gas SupplyPressure

Input Type Minimum Maximum

50,000 - 150,000 Natural 4.5" w.c. 14" w.c.

175,000 - 200,000 Natural 6" w.c. 14" w.c.

50,000 - 150,000 Propane 11" w.c. 14" w.c.

Maximum Length of Outside Combustion Air Inlet Pipe

Type of BTUH Heater Length Maximum Equivalent Length for

Inlet Pipe Size (Straight Tubes) Length 90oElbow 45oElbow

50 20/25/30

c75 20/25/30/35/40 5 ft (1.5M)

4" 100 30/35/40/45/50

Smooth 125 40/45/50

Wall 150 50/55/60

175 50/55/60/65/70

200 50/55/60/65/70

50 20/25/30

4" 75 20/25/30/35/40 N/A N/A

Corrugated 100 30/35/40/45/50

or 125 40/45/50

Flexible 150 50/55/60 N/A N/A

175 50/55/60/65/70

200 50/55/60/65/70

cAssumes the use of three feet of flexible pipe at the combustion

air inlet on the burner/control box.

80 ft

(24.3M) 10 ft (3M)

10 ft (3M) 5 ft (1.5M)

60 ft

(18.3M)

40 ft

(12.2M)

30 ft

(9.1M)

Form RZ-NA-I-TR, Page 18

10-12 (254-305mm) diameter

expansion curve or flexible gas

line MUST BE horizontal with

or above the gas connection.

Install a manual shutoff

valve with 1/8 NPT test

gauge port

10-12

(254-305mm)

diameter

expansion

curve

End

View

Side

View

Allow slack in the electrical cord.

Loop excess and bind loosely with

wire tie or electrical tape.

rounded Plug-in Cord

Drip

Leg

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 sizing supply lines, consider possibilities of future expansion and increased requirements.

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

Sizing Gas Supply Lines

WARNING

Thisapplianceisequippedforamaximum gas supply pressure of 1/2 pound, 8

ounces, or 14 inches water column.

NOTE: Supply pressurehigher than1/2 pound requiresinstallation ofan additional serviceregulator

external to the unit.

PRESSURE TESTING SUPPLY PIPING

Test PressuresAbove1/2PSI: 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.

14. Gas Piping and Pressures (cont'd)

DANGER: Do not install gas piping where it

maybeexposedtoradiantorconvectionheat.

See Hazard Levels, page 2.

Figure 23 - Gas and Electrical Connections

Form RZ-NA-I-TR, Mfg No. 121027 Rev 5,

Page 19

WARNING: All components of the gas supply

system must be leak-tested prior to placing

equipment in service. NEVER TEST FOR

LEAKSWITHAN OPEN FLAME. See Hazard

Levels, page 2.

Manifold or Orifice Pressure Settings

Measuring manifold gas pressure cannot be done until the heater is in

operation.Itisincludedinthesteps of the "Check-Test-Start" procedure

in Paragraph 16. The following warnings and instructions apply.

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

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

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

pressure could cause excessive manifold gas pressure immediately or at

some future time.

Instructions for Checking Manifold Pressure:

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

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

outletpressure tap in the valve.NOTE:A manometer (fluid-filled gauge)

is recommended rather than a spring type gauge due to the difficulty of

maintaining calibration of a spring type gauge.

Since the tubular heater does expand and contract, the connection be-

tween the supply line and the heater must allow for expansion and con-

traction. Use either an expansion coil (12" minimum diameter) or, if

permitted by local code, a flexible connection. If a flexible connector is

installed, use only an CSA certified, stainless steel connector with a

maximum length of 24" and a minimum size of 1/2" I.D. If a flexible

connector, Option CE3 or CE4, was ordered with the heater, it will be

shippedseparately.Optional flexibleconnectorshavethefollowingpres-

sure drops.

WARNING: Strong cleaning solutions or

chemicalsubstancesmustnotcomeincontactwith

theflexibleconnector.

Figure 24 -

Thermostat

Connections

Terminal

Strip

ManifoldPressure Settings

BTUHInput Gas Manifold Pressure

50,000 - 150,000 Natural 3.5" w.c.

175,000 - 200,000 Natural 5" w.c.

50,000 - 150,000 Propane 10" w.c.

15. Electrical Supply and

Connections

All electrical wiring and connections, including electrical grounding

MUST be made in accordance with the National Electric CodeANSI/

NFPA No. 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. The heater must be electrically grounded and connected to a sepa-

ratelyfusedcircuitwithadisconnectasrequiredbythe National Electri-

cal Code.

Heaters equipped for 115, 208, or 230 supply voltage have a grounded

plug-in cord. Be sure the outlet used provides the appropriate supply

voltage. Heaters equipped for 460 supply voltage require a separate

disconnect switch and line voltage supply run directly from the main

electrical panel to the unit.All external wiring must be within approved

conduit and have a minimum temperature rise of 60°C. The electrical

supply connects at the rear (valve end) of the burner/control box. Make

connections as shown on the wiring diagram located on the inside of the

service door.

WARNING: If you turn off or disconnect the

electrical power supply, turn off the gas. See

Hazard Levels, page 2.

Iftheheater has field-installed options thatrequireelectricalconnections,

consult the instruction sheet and wiring diagram supplied in the option

package.

Control Thermostat

The heater is designed for automatic

control from a remotely positioned

oroptional unit-mounted24-volt ther-

mostat and is equipped with a termi-

nal strip to facilitate thermostat con-

nections. See Figure 24.

Use either an optional thermostat

(OptionCL1) or a field-supplied 24-

voltthermostat.Do notattempttoop-

erate with a line voltage thermostat.

Locatea remote thermostat on an in-

sidewallintheheatedareabutnotin

the direct path of the infrared rays.

See the wiring diagram on page 20

or inside the heater door panel.

Multiple-Heater Control

Options are available to permit control of up to six heaters from a single

thermostat or a time clock and single/multiple thermostats. For maxi-

mumsafety,themultiplecontrolisdoneinthe low voltage circuit.Com-

plete instructions are included in each Option Kit. See Paragraph 24.

BTUH Pressure Drop(Inches W.C.)

Input Option CE3, 1/2" I.D. Option CE4, 3/4" I.D.

50,000 0.25 0.05

75,000 0.25 0.05

100,000 0.25 0.10

125,000 0.50 0.15

150,000 0.75 0.20

175,000 0.80 0.40

200,000 0.90 0.50

A shutoff valve and a drip leg or sediment trap must be provided in the

gas supply line at each heater. See Figure 23.

Use a joint compound that is resistant to propane gas at all connections.

Test all gas lines using a leak-detecting solution.

2)Openthevalve and operatethe heater. Measure the gaspressure to the

manifold. Normally, adjustments should not be necessary to the factory

presetregulator.

If adjustment is necessary, set pressure to correct settings by turning the

regulatorscrew IN (clockwise)toincreasepressure.Turnregulatorscrew

OUT (counterclockwise) to decrease pressure.

Consult the valve manufacturer's literature provided with the heater for

moredetailedinformation.

Form RZ-NA-I-TR, Page 20

WIRING DIAGRAM

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