Carrier GAS FURNACE 58MXA Instructions and recipes

58NXA
DeMuxe 4-Way NuRipoise Fixed-Capacity
Direct Vent Condensing Gas Furnace
\isit_ v_w carrier.corn
tnstammation, Start-Up, and Operating
Sizes 040o140, Series 170
NEATUNG & COOUNG
A93040
NOTE: Read the entire instruction nmnua] before starting the
installation.
This symbol -->indicates a change since the tast issue,
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 2
INTRODL CTION 4
CODES AND STANDARDS 4
ELECTROSTATI( DISCHARGE (ESD) PRECAUTIONS .... 5
APPLICATIONS ...................................... 6
General ............................................. 6
Lpflow Applications ............................... 6
Downflow Applications ............................. 8
Horizontal Lek (Supply-Air Discharge)
Applications ........................................ 10
Horizontal Right (Supply-Air Discharge)
Applications .................................... 11
LOCATION ......................................... !3
General ......................................... 13
Furnace Location Relative to Cooling
Equipment ...................................... ]4
Hazardous Locations .............................. 14
INSTALLATION ........................................ 14
Leveling Legs (If"Desired) ............................ 14
Installation in Upfiow and Downflow
Applications ....................................... 15
Installation in Horizontal Applications .................. 16
Air Ducts ........................................ ]7
General Requirements ............................ 17
Ductwork Acoustical Treatment ................... 17
Supply Ai* ( onnections ......................... 17
Return Air Connections .......................... 17
Filter Arrangement ................................ 1S
Bottom Closure Panel ............................ 19
Gas Piping ....................................... ]9
Electrical Connections ............................ 20
115 v Wiring ................................. 20
24 v Wiring .................................. 22
Accessories ........................................................................ 22
Direct Venting ...................................... 22
Removal of Existing Furnaces t)om Common
Vent Systems .................................... 22
Combustion-Air and Vent Piping .................... 22
Vent Extension Pipe ............................ 27
Concentric Vent and Combustion-Air
Termination Kit Installation .............................................. 29
Multiventing and Vent Terminations .................. 33
Condensate Drain .................................. 34
General ....................................... 34
Application ....................................... 34
Condensation Drain Protection ..................... 35
START-UP, ADJL STMENTS AND SAFETY (HECK ........... 35
General ........................................... 35
Prime Condensate Trap With Water .................... 36
Purge Gas Lines ................................... 37
Sequence of Operation ............................. 37
Heating Mode ................................. 37
Cooling Mode ................................ 40
Thermidistat Mode ............................. 40
Continuous Blower Mode ........................ 41
Heat Pump Mode .............................. 41
Component Test ............................... 41
Adjustments ........................................ 42
Set Gas Input Rate ............................. 42
Set Temperature Rise ............................ 48
Adjust Blowe* Off Delay (Heat Mode) ................ 49
Set Thermostat Heat Anticipator .................... 49
(hock Safe w Controls ............................... 49
Check Primmy Limit Control ...................... 49
Check Pressure Switch .......................... 49
( hecklist .......................................... 50
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 101 Catalog No. 535-80157 Printed in U.S.A. Form 58MXA-18SI Pg 1 2-05 Replaces: 58MXA-17SI

AIRFLOW
4>
_ HORIZONTAL ]
LEFT
AIRFLOW hAIRFLOW
©
AIRFLOW A93041
Fig. 1--MuRipoise Orientations
SAFETY CONSIDERATIONS
/NIT RELIABILITY HAZARD
Improper installation or misapplication of ihmace may re-
quire excessive servicing or cause premature component
failure
Application of this lhrnace should be indoors with special
attention given to vent sizing and material, gas input ratQ air
temperature rise, unit leveling, and unit sizing
FIRE, EXPLOSION, ELECTRICAL SHOCK AND
(ARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in electrical shock,
fire_ personal ir!inry_ or death.
Improper installation, adjustment, alteration, service, mainteo
nance, or use can cause carbon monoxide poisoning, exploo
sion, fire, electrical shock, or other conditions which may
cause personal injury or property damage. Consuh a qualified
installer, service agency, local gas supplier, or your distribuo
tot or branch ibr information or assistance. The qualified
installer or agency must use only [hctoryoauthorized and
listed kits or accessories when modi_)ing this prodact.
Installing and servicing heating equipment can be hazardous due to
gas arid electrical components. Only trained and qualified
personnel s][muld install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance f_anctions
such as cleaning and replacing air filters All other operations must
be performed by trained service personnel. When working on
heating equipment, observe precautions in literature, on tags, and
on labels attached to or shipped with unit and other safety
precautions that may apply
These instructions cover the minimmn requirements arid conform
to existing national standards and safety codes. In some instances,
these instructions exceed certain local codes and ordinances,
especially those that *nay not have kept up with changing resideno
tial construction practices. We require these instl-t,ctions as a
minimum fbr a saf_ installation.
Wear safety glasses and work gloves. Have a fire extinguisher
available during startoup and adjustment procedures and service
calls.
--€
-->
--€
(IT HAZARD
Failure to %11ow this caution *nay result in personal Jr!jury.
Sheet metal parts may have sharp edges or bun's Use care arid
wear appropriate protective clothing and gloves when hano
dling parts.
Recognize sa_kty infornlation. This is the safety-alert symbol Z_ "
When yon see this symbol on the unit and in instructions or
manuals, be alert to the potential ibr personal injury.
Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safctyoalert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injm7 or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identii}" unsafe practices which may result in minor personal
injuw or product and property damage. NOTE is used to highlight
suggestions which will result in enhanced installation, reliability,
or operation.
The 58MXA Multipoise Condensing Gas-Fired Furnaces are CSA
(fbm_erly AGA and CGA) design-certified for natural and propane
gases (see fimaace rating plate) and _br installation in alcoves,
attics, basements, closets, utility rooms, crawlspaces, and garages.
The ihmace is factoryoshipped ibr use with natural gas. A CSA
listed gas conversion kit is required to convert Ihmace for use with
propane gas.
See Fig. 3 for required clearances to combustibles.
Maintain a l-in. clearance fi'om combustible materials to supply air
ductwork for a distance of 36 inches horizontally fiom the fhmace.
See NFPA 90B or local code ibr further requirements.
These ftunaces SHALL NOT be installed directly on carpeting,
tile, or any other combustible material other than wood flooring. In
downflow installations, factory accesso_' floor base MUST be
used when installed on combustible materials and wood flooring.
Special base is not required when this _iulaace is installed on
manufacturer's (?oil Assembly Part No. CD5 or CK5, or when (Toil
Box Part No. KCAKC is used.
The 58MXA 040 through 120 size units are (SA design-certified
for use in manufactured (mobile) homes when ihctory accessou
conversion kit is used The 140 size unit is NOT design-certified
for use in manufactured (mobile) homes. These thrnaces are
suitable for installation in a structure built on site or a manufac-
tured building completed at final site. The design of this thmace
line is NOT CSA design-certified for installation in recreation
vehicles or outdoors.
This fl*rnace is designed %r continuous return=air n_ininmm
temperature of 60_T db or intermittent operation down to 55°F db
such as when used with a night setback thermometer Return-air
temperature must not exceed 80°F db Failure to follow d_ese
remm air limits may affect reliability of heat exchangers, motors
and controls. (See Fig 4.)
These ihrnaces are shipped with the drain and pressure robes
connected for UPFLOW applications. Minor modifications are
required when used in DOWNFLOW, HORIZONTAL RIGHT, or
HORIZONTAL LEFT (supply=air discharge direction) applica-
tions as shown in Fig. 1. See details in Applications section.
Install this fku_ace only in a location and position as specified in
LO(ATION and INSTALLATION sections of these instructions.
Combustion products must be discharged outdoors. Connect this
fm'nace to an approved vent system only, as specified in the
(ombustion Air and Vent piping sections of these instructions

14 9'
TYP
26
26 £"
SIDE INLET
_ +_ .................. _
11"_ _ 23 :_"TYP
SIDE iNLET
26 %i6" TYP
CONDENSATE DRAIN
TRAP LOC,RHON
(DOWNFLOW &
HORIZONTAL LEFT)
_%-- /:-IN D{A
ACCESSORY
POWER ENTRY
CONDENSATE
DRAIN TRAP
LOCATION
(AJTERNATE
UPFLOW)
17 M_"
©
AIRFLOW
_A_
TLET
DRAIN LOC#<T_O N
(UPFLO_M)
30 /z"
FOR HORIZONTAL
HANGING
THERMOSTAT ENTRY
80 [10M iNLEt
39 %'
NOTES: 1. Minimum return-air openings at furnace, based on metal duct, F flex duct is used,
see flex duct manufacturers recommendations for equivalent diameters
2 Minimum return-air opening at furnace:
a For 800 CFM-16qn round or t4/: x 124n, rectangle
b, For 1200 CFM-20qn, round or 14/, x 19/:din rectangle,
c, For 1600 CFM-224n, round or 14/: x 23/Mm rectangle
d For airflow requirements above 1800 CFM, see Air Delivery table in Product Data
literature for specific use of single side inlets, Tbe use of both side inlets, a
combination of 1 side and the bottom, or the bottom only will ensure adequate
return air openings for airflow requirements above 1800 CFM at 05 WC ESP
UNIT S_ZE
040-08
040-12
080-08
060-12
060-10
080-12
080-16
080-20
100-16
100-20
120-20
140-20
Dimensions (in.)
A
17-I/2
17-I/2
17-I/2
17-1/2
17-1/2
17-1/2
17-1/2
21
21
21
24-1/2
24-1/2
D
15-7/8
15-7/8
15-7/8
15-7/8
15-7/8
15-7/8
15-7/8
19-3/8
19-3/8
19-3/8
22-7/8
22-7/8
E
16
16
16
16
16
16
16
19-1/2
19-1/2
19-1/2
23
23
A02149
Fig. 2--Dimensional Drawing

--> Never test %r gas leaks with an open flame. [se a commercially
available soap solution made specifically fbr detection of leaks to
check all connections as specified in the GAS PIPING section of
these instructions
--> Always install the Nmace to operate within the t_omace's intended
rise range with a duct system which has an external static pressure
within the allowable range as specified in the SET TEMPERA=
TURE RISE section of these instructions.
--> When a fi/rnace is installed so that supply ducts carry air circulated
by the Nmace to areas outside the space containing the furnace,
the return air shall also be handled by ducts sealed to the Nrnace
casing and tem?inating outside the space containing the Nrnace.
--> A gas-fired Nrnace for installation in a residential garage must be
installed as specified in the Hazardous Locations section of these
insm_ctions,
---> The t:urnace is not to be used for tempma W heating of buildings o1"
strt/ctures under construction unless the furnace installation and
operation complies with the first (AUTION in the LO(ATION
section of these instructions.
This thmace must be installed with a direct-vent (combustion air
and flue gas) system and a factory accessory tei_nination kit. In a
direct-vent system, all air for combustion is taken directly from the
outdoor atmosphere and flue gases are discharged to the outside
atmosphere. See Nmace and factory accesso_ vent-air intake
termination kit instructions for proper installation.
These fimaaces are shipped with the following materials to assist in
proper furnace installation. These materials are shipped in the main
blower compartment.
Installer Packet includes:
Installation, Startup, and Operating instructions
Service and Maintenance instructions
User's Information Manual
Warranty Certificate
Loose Parts Bag includes: Quantity
Pressure tube extension 1
Collector Box or condensate trap extension tube 1
inducer housing drain tube 1
l/2qn CPVC street elbow 2
Drain tube coupling 1
Drain tube coupling grommet 1
Vent and combustion-air pipe support 2
Condensate trap hole filler plug 3
Vent and combustion-air intake hole filler plug 2
Combustion-air pipe perforated disk assembly 1
Vent Pipe Extension 1"
ONLY supplied with some furnaces.
For accessory installation details, refer to accessory installation
instl_._ctions.
_NTRODUCTmON
The model 58MXA 4=way multipoise, Gas=Fired, Category IV,
direct-vent condensing fitrnace is available in model sizes ranging
in input capacities of 40,000 to 138,000 Bmh
CODES AND STANDARDS
FMIow all nationM and locM codes and standards in addition to
these instructions° The installation must comply with regulations
of the serving gas supplier, local building, heating, plurnhing, and
other codes. In absence of local codes, the installation must
comply with die national codes listed below and all authorities
having jurisdiction.
In the United States and Canada, %llow all codes and standards %r
the fbllowing:
Step l--Safety
• US: National Fuel Gas (7ode (NFGC) NFPA 54-2002/ANSI
Z223.1-2002 and the Installation Standards, Warm Air Heating
and Air Conditioning Systems ANSI NFPA 90B
• (ANADA: National Standard of Canada, Natural Gas and
Propane Installation (ode (NSCNGPIC) CANiCGA -B149,1
=and2 M=00
Step 2--General Installation
• US: NFGC and the NFPA 90B. For copies, contact the National
Fire Protection Association Inc, Battewmarch Park, Quincy,
MA 02269; or for only the NFG( contact the American Gas
Association, 400 N. (apitol, N.W., Washington DC 20001
--> * A manufhctured (Mobile) home installation must confbrm with
the Manzt_bctured _12)me Construction and 5"qfi._0' Standard,
Tide 24 (_FR, Part 3280, or when this standard is not
applicable, the Standard fbr :l,Ian@mtzcred Home in.stgd/ation
(._Iclmt/actHred D))me Sites, ('omm_¢nitie.s, and Set-L_.s),
A_ifZ,.VCS' A225. I, an_or (it_\-_ (WA-Z240, MN Serie,s Mofile
• (ANADA: NSCNGPI(L For a copy_ contact Standard Sales,
CSA International, 178 Rexdale Boulevard, Etobicoke (Tot=
onto), Ontario, MPW 1R3, Canada.
Step a--Combustion and Ventilation Air
• US: Section 53 of the NFG(, Air for (ombnstion and
Ventilation
• CANADA: Part 7 of the NSCNGPIC, Venting Systems and Air
Supply for Appliances
Step 4--Duct Systems
• US and CANADA: Air (onditioning (ontractors Association
(ACCA) Manual D, Sheet Metal and Ai* Conditioning Con=
tractors National Association (SMACNA), or American Soci-
ety of Heating, Refrigeration, and Air Conditioning Engineers
(ASHRAE) 200I Fundamentals Handbook Chapter 34
Step g--Acoustical Lining and Fibrous Glass Duct
• Ers and CANADA: cmTent edition of' SMACNA, NFPA 90B as
tested by EL Standard 18! for Class I Rigid Air Ducts
Step g--Gas Piping and Gas Pipe Pressure Testing
• US: NFGC chapters 2, 3, 4_ and 9 and national plumbing codes
--> In the state of Massachusetts:
* This product must be installed by a licensed plun_her or gas
fitter
* When flexible connectors are used, the maximum length shall
not exceed 36 inches
* When lever type gas shutoff?4 are used they shall not exceed 36
inches
*CANADA: NSCNGPI( Parts 3, 4, 5, A, B, E, and H.
Step 7--Electrical Connections
* US: National Electrical Code (NEC) ANSIiNFPA 70=2002
* (ANADA: Canadian Electrical Code CSA (22 1

This forced air furnace is equipped for use with natural gas at altitudes 0 -10,000 ft (0 -3,050m), except 14,0 size furnaces are only approved for altitudes 0 -7,000 ft.
(0 -2 135m).
An accessory kit supplied by the manufacturer, shall be used to convert to propane gas use or may be required for some natural gas applications.
This furnace is for indoor installation in a building cy,_nstructed on site. This furnace may be installed in a manufactured (mobile) home when stated on rating plate and
using factory authorized kit..
This furnace may be installed on combustible floedng in alcove or closet at Minimum inches Clearance To Combustible Construction as described below.
This fumace requires a special venting system. Refer to the installation instructions for parts list and method of installation. This fumace is for use with schedula40 PVC,
PVC-DWV CPVC or ABS-DWV pipe and must not be vented in common with other gas-fired appliances. Construction through whiclq vent/air intake pipes may be
installed is maximum 24 inches (600 nlm), minimum 3/4 inches (19 mm) thickness (including roofing n_qteriala).
Cette foumaise _ air pula_ est d,quip_e pour utillaation avec gaz naturel et altitudes comprises entre 0 -3,050m (0 -10,000 pi),except6 queles fournaises de 140 taille
sont pour altitudes comprises entre 0 - 2,135m (0 - 7,000pi).
Utiliser une trausse de conversion fournie par le fabricant, pour passer au gaz propane ou pour certaines installations au gaz natarel.
Cette foumaise A air pula6 est pour installation & Hnt6rlaur dans un bAtiment construit sur place. Cette foumalae & air pulse paut 6tre installd, e dens une maison
pr6fabriqu6e (malaon mobile) si prescrit par la plaque signal6tique et si I_on utilise une trousse speclfi6e par la fabrlaant.
Cette foumaise peut 6tre installd, e sur un plancher combustible dens un enfoncement ou un placard en observant les D_gagement Minimum En Pouces Avec
Elements De Construction Combustibles.
Cette fournalae n@cessite un systeme d'6vacuation sp6cial. La n_thede d'installation et la Ilata des pieces nd,cessaires flgurent dens les instructions d'installation. Cette
fournaise doit s'utiliser avec la tayautede des nomenclatures 40 PVC, PVC-DWV, CPVC ou ABS-DWV et ella ne peut pas 6tre ventil_e conjolatment avec d'autres
appareila & gaz. Epaisseur de la construction au travers de laquelle il est possible de faire passer les tuyaux d'a6ration (admlaslan/6vacuation); 24 po (600 mm)
maximum, 3/4 po (19mm) minimum (y compris la toiture).
For upflc_w and cDwnflow applications, furnace must be installed level, or pitched within 1/2" of level. For a M IN 1/4" TO 1/2" MAX
horizontal application, the furnace must be pitahed minimum 1/4" to maximum of 1/Z' forward for propar
drainage. See Installation Manual for IMPORTANT unit support details on horizontal applications.
Pour des applications de flux ascendant et descendant, la fournalae doit (}tre installg_e de niveau ou laclla6e _ T
pas plas de 1/Z' du niveau. Pour une application hodzontale, la fournaise deit (}tre inclin6e entra n-tinimum UPFLOW OR
1/4" et maximum 1/2" du niveau pour le drainage approprid,. En cas d'installatlan en position horizontak_, DOWNFLOW
consulter les renseignementa JMPORTANTS sur le support dens le manuel d'ind_allation. HORIZONTAL
NININUN INCHES CLEARANCE TO COMBUSTIBLE CONSTRUCTION
ALL POSITIONS:
Minimum front clearance for sep,zice 24 inches (610ram).
1 1" 140 size furnaces require 1 inch back clearance to combustible materials.
DOWNFLOW POSITIONS:
1" For installa/Jon on cornbustible floors only when installed on special base No. KGASB0201ALL
Coil Assembly, Part No. CD5 or CKS, or Coil Casing, Part No. KCAKC.
HORIZONTAL POSITIONS:
Line contact is permissible only between lines formed by intersections of top and two sides of
furnace jacket, and building joists, studs, or framing.
§ Clearance shown is for air inlet and air outlet ends.
O 120 and 140 size furnaces require 1 inch bottom clearance to combustible materials.
DEGAGEMENT MINIMUM EN POUCES AVEC ELEMENTS DE CONSTRUCTION COMBUSTIBLES
POUR TOtJS LES POSITIONS:
Degagement avant minimum de 610mm (24 po) pour I'entrelien.
1" 1" Pourles foumaises de 140taille, 1 po(25mm)degagement des mat6riaux combustiblesest
requis au_arriere.
POUR LA POSITION COURANT DESCENDANT:
1" Pour Hnstallalion sur le plancher combustible seulement quand on utilise la base spedale, piece
n ° KGASB0201ALL I'ensernble serpaniin, pi6ce n° CD5 ou CKS, ou le carter de serpentin,
piece n ° KCAKC.
POUR LA POSITION HORIZONTALE:
Le contact n'est permis qOen_-e les lignes formees par les intersectioes du dessus et des
deuxc6tgs de la d:_emise de la foumaise, et des solives, des montanta ou de la d:rarpente du
batirnent
§ La distance indiquee concerne I'extr@mite du tuyau d'arfivee d'air et I'extrernit6 du tuyau de sortie
d'air.
O Pour les fournaises de 120 et 140 taille, 1 po (25mm) degagement des materiaux combusitbles
est requis au dessous.
This furnace is approved for UPFLOW, DOW_q FLOW and
HORIZONTAL ins'talla_ns.
Cette fournaise est approuv@e paur Hns[allation HORIZONTALE
et la drculatlan d'air VERS LE HAUT et VERS LE BAS.
Cl_aranoa at-raws
do not change with ne cl]ange pas avec
furnace orlantation, I'otientation de la
g6n6rateur d'ak chaud.
Vent clearance to
combustibles 0".
Clearance in inches 0 (1::o)Dg%Jagement
D_gagement (po). d'@vent avec combustibles.
328066-201 REV. B LIT TOP
Fig. 3--Clearances to Combustibles
ELECTROSTAT{C DISCHARGE {ESD} PRECAUT{ONS 2 Firmly [ouchthe clean, unpaiute& metal surface of the _.m_ace
UNIT DAMAGE HAZARD
Failure to follow this caution may damage furnace compo=
nents,
Electrostatic discharge can affect electronic components
Take precautions during [_urnace installation and servicing to
protect the f_m_ace electronic control. Precautions will pre=
vent electrostatic discharges fi'om personnel and hand tools
which are held during the procedure. These precautions will
help to avoid exposing the control to electrostatic discharge
by putting the furnace, the control, and the person at the same
electrostatic potential.
l, Disconuect all power to the [_urnace Multiple disconnects may
be required DO NOT TOUCH THE CONTROL OR ANY
WIRE CONNECTED TO THE CONTROL PRIOR TO DIS=
CHARGING YOUR BODY' S ELE(TROSTATIC ( HARGE
TO GROUND
4_
5_
d.
chassis which is close to the control Tools held in a person's
haud during grounding will be satisfactorily discharged.
After touching the chassis, you may proceed to service the
control or connecting wires as tong as you do nothing to
recharge your body with static electricity (for example; DO
NOT move or shuffle your feet, do not touch ungrouuded
objects, etc)
If you touch uugrounded ohjects (and recharge your body with
static electricity), firmly touch a clean, uupainted metal
surface of the f_,_mace again befbre touching control or wires.
Use this procedure for installed and uninstalled (ungrounded)
_/fnaces
Betbre removing a new control flora its container, discharge
your body's electrostatic charge to grouud to protect d'*e
control f?om damage If [!_e control is to be installed iu a
f_,u_ace, follow items 1 through 4 bef_._re bringing the control
or yourself in contact with the furnace Put all used and new

FRONT
MAX 80°F
M[N 60°F
-->
A05004
Fig, 4_Retum-Air Temperature
controls into containers be%re touching ungrounded objects
7. An ESD service kit (available fiom commercial sources) may
also be used to prevent ESD damage.
PROPERTY DAMAGE
Failure to follow this caution may result in minor property
damage.
Local codes may require a drain pan under entire filmace and
condensate trap when a condensing furnace is used in an attic
application or over a finished ceiling.
APPLICATIONS
Step l--General
Some assembly and modifications are required %r furnaces
installed in any of the 4 applications shown in Fig. 1. All &ain and
pressure robes are connected as shown in Fig 6 See appropriate
application instla/ctions fbr d-lese procedures
Step 2--Upf[ow Applications
An upflow furnace application is where t_mnace blowei is located
below combustion and controls section of f_./rnace, and conditioned
air is discharged upwards.
CONDENSATE TRAP LOCATION (FACTORY-SHIPPED
ORIENTATION)
The condensate tlap is flactol-y installed in the blower shelf and
fhctory connected for UPFLOW applications A factoo-supplied
tube is used to extend the condensate trap drain connection to the
desired t'urnace side for field drain attachment. See (ondensate
Trap Tubing (Factory=Shipped Orientation) section fbr drain tube
extension details. (See Fig. 5.)
CONDENSATE TRAP TUBING (FACTORY-SHIPPED
ORIENTATION)
NOTE: See Fig. 6 or robe routing label on main fi/mace door to
confirm location of these tubes.
1. Collector Box Drain, Inducer Housing Drain, Relief Port, and
Pressure Switch Tubes.
These robes should be factory attached to condensate trap and
pressure switch ready for use in UPFLOW applications. These
robes can be identified by their connection location and also
by a color label on each robe. These robes are identified as
-->
%llows: collector box &ain robe (blue label), inducer hmMng
&ain robe (violet label or molded), relief port robe (green
label), and pressure switch robe (pink label)
2, Condensate Trap Drain Tube
The condensate trap drain connection must be extended for
field attachment by doing the fbllowing:
a. Detem_ine location of field drain connection. (See Fig. 2or
6.)
NOTE: If internal filter or side Filter/Media (abinet is used, &ain
robe should be located to opposite side of casing fiom return duct
attachment to assist in filter removal.
b. Remove and discard casing drain hole plug button Ii"om
desired side.
c. Install &ain robe coupling grommet (factow-supplied in
loose parts bag) in selected casing hole.
d. Slide &ain robe coupling (fbctory=supplied in loose parts
bag) through grommet ensuring tong end of coupling fitces
blower.
e. Cement 2 factory=supplied 1/2-in. street CPVC elbows to
the rigid drain tube connection on the condensate trap. (See
Fig. 5.) These elbows must be cemented together and
cemented to condensate trap drain connection
NOTE: Failure to use CPV( elbows may allow &ain to kink and
prevent draining.
£ Connect larger diameter drain tube and clamp (factory-
supplied in loose parts bag) to condensate trap and clamp
securely.
g. Route robe to coupling and cut to appropriate length.
h. Attach robe to coupling and clamp securely.
CONDENSATE TRAP LO(ATION (ALTERNATE LPFLOW
ORIENTATION)
An alternate tocation fbr d-le condensate t_ap is the left=hand side
of casing. (See Fig 2 and 7)
NOTE: If the alternate left°hand side of casing location is used.
the fimtolT°connected &ain and relief port tubes must be discon-
nected and modified for attachment. See Condensate Trap Tubing
(Alternate Upflow Orientation) section for tubing attachment.
To relocate condensate tlap to the left-hand side, perfbm_ the
following:
1. Remove 3 tubes connected to condensate trap.
2. Remove trap ti"om blower shelf by gently pushing tabs inward
and rotating trap.
3. Install casing hole filler cap (factory=supplied in loose parts
bag) into blower shelf hole where trap was removed.
N
CARBON MONOXIDE POISONING HAZARD
Failure to £dlow this warning could result in personal inju W
or death.
Casing hole filler cap must be installed in blower shelf hole
when condensate trap is relocated to prevent combustion
products being drawn in ti'om appliances in the equipment
1"OO111.
4. Install condensate trap into teftohand side casing hole by
inserting robe connection stubs through casing hole and
rotating until tabs snap into locking position.
5. Fill unused condensate trap casing holes with plastic filler
caps (fi_ctory=supplied in loose parts bag)

r--- BLOWER SHELF _ FURNACE
/X DOOR /_ CONDENSATE
Jf r-- CONDENSATE \/TRAP
/ / TRAP (INSIDE) X/FURNACE
X]s'w
FIELD2 '4 1 '2
/_ \ DRAIN
X---ALTERNATE DRAIN \ CONN
TUBE LOCATION \
CONDENSATETRAP_ SIDE VIEW FRONT VIEW
DRAIN TUBE LOCATION DOWNFLOW AND ALTERNATE
UPFLOW APPLICATIONS EXTERNAL UPFLOW APPLICATIONS
FURNACE
OOR ! FURNACE
IDE
DRAIN
CONN
END VIEW FRONT VIEW
HORIZONTAL
APPLICATIONS
7
(OPTIONAL) /
._111/2 /
GUIDES
(WHEN USED)
FRONT VIEW
71/8
7/8Z :
SIDE VIEW
Fig. 5--Condensate Trap
/40D
COLLECTOR BOX TO
TRAP RELIEF PORT
%OD
INDUCER HOUSING
DRAIN CONNECTION
/80D
COLLECTOR BOX
DRAIN CONNECTION
SCREW HOLE FOR
UPFLOW OR DOWN-
FLOW APPLICATIONS
(OPTIONAL)
V2-1N PVC OR CPVC
CONDENSATE TRAP TUBING (ALTERNATE UPFLOW
ORIENTATION)
NOTE: See Fig 7 or robe routing label on nmin I_urnace door to
confim_ location of these tubes
1, (ollector Box Drain Tube
(onnect collector box &ain robe (blue label) to condensate
trap,
NOTE: On 17=1/2 in wide k'urnaces ONLY, cut tube between
corrugated sections to prevent kinks from occurring,
2, Inducer Housing Drain Tube
a, Remove and discard LOWER (molded) inducer housing
drain tube which was previously connected to condensate
trap,
b, Use inducer housing &ain extension tube (violet label and
factory-supplied in loose parts bag) to connect LOWER
inducer housing drain connection to the condensate trap,
c Detem_ine appropriate length, cut, and connect robe,
d, (lamp robe to prevent any condensate leakage,
3, Relief Port Tube
a (onnect relief port tube (green label) to condensate trap,
b, Extend this robe (if required) by splicing to snmll diameter
robe (factory=supplied in loose parts bag),
c Detem_ine appropriate length, cut, and connect robe,
A93026
CONDENSATE TRAP FIELD DRAIN ATTACHMENT
Refer to Condensate Drain section for recommendations and
procedures,
PRESSURE SWITCH TL BING
The LOWER collector box pressure robe (pink label) is facto U
connected to the pressure switch and should not require any
modification,
NOTE: See Fig. 6 or 7 or robe routing label on main Nrnace door
to check for proper connections,
UPPER (OLLECTOR BOX AND INDU(ER HOUSING
(LNUSED) DRAIN CONNECTIONS
Erpper Collector Box Drain Connection
Attached to the UPPER collector box drain connection is a
factow-installed corrugated, plugged tube (blue and white striped
1abel), This tube is plugged to prevent condensate teakage in this
application Ensure this robe is plugged,
NOTE: See Fig 6 or 7 or robe routing label on nmin f_ulmce door
to check for proper connections
Upper Inducer Housing Drain Connection
Attached to the [?PPER (unused) inducer housing &ain connection
is a cap and clamp, This cap is used to prevent condensate leakage
in this application, Ensure this connection is capped,
NOTE: See Fig, 6 or 7 or robe routing label on nmin fi/rnace door
to check for proper connections,

PLUG
COLLECTOR
DRAIN TUBE (BLUE
& WHITE STRIPED)
COLLECTOR
TUBE (PINK)
COLLECTOR BOX "-_
TUBE (GREEN)
INDUCER
(MOLDED) DRAIN
TUBE (BEHIND
COLLECTOR BOX
DRAIN TUBE)
DRAIN TUBE (BLUE)
FACTORY-SUPPLIED
DRAIN TUBE
COUPLING (LEFT
DRAIN OPTION)
PLUG
CAP
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
COLLECTOR BOX
TUBE (PINK)
COLLECTOR BOX --
TUBE (GREEN)
COLLECTOR BOX --
DRAIN TUBE (BLUE)
CONDENSATE _
TRAP EL
INDUCER J
HOUSING
DRAIN TUBE
(VIOLET)
©
O O
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
FIELD-INSTALLED
FACTORY-SUPPLIED
_i2-1N CPVC STREET
ELBOWS (2) FOR
LEFT DRAIN OPTION
FIELD-INSTALLED
FACTORY-SUPPLIED
DRAIN TUBE
COUPLING (RIGHT
DRAIN OPTION)
A94163
Fig. 6--Factory-Shipped Upflow Tube
Configuration (Shown w{th BNower Access Panel
Removed}
CONDENSATE TRAP FREEZE PROTECTION
Ref?r to Condensate Drain Protection section %r recommenda°
lions and procedures.
Step 3--Downfiow Applications
A downflow _/mace application is where :_trnace blower is located
above congbustion and controls section of fi_rnace, and conditioned
air is discharged downwards
( ONDENSATE TRAP LO(ATION
The condensate tlap mttst be removed from the factow-installed
blower shelf location and relocated in selected application location
as shown in Fig. 2, 8, or 9
To relocate condensate trap from the blower shelf to desired
location, perform the following:
1. Remove 3 robes connected to condensate trap
2. Remove tlap fiom blower shelf by gently pushing tabs inward
and rotating trap
3. Remove casing hole filler cap from casing hole. (See Fig. 2, 8,
or 9.)
4. [nstall casing hole filler cap into blower shelf hole where trap
was removed
-->
A94164
Fig. 7--ARernate Upflow Configuration and Trap
Location
CARBON MONOXIDE POISONING HAZARD
Failm'e to follow this warning could result in personal inju W
or death,
Casing hole filler cap must be installed in blower shelf hole
when condensate trap is relocated to prevent combustion
products being drawn in from appliances in the equipment
roonl.
5. [nstall condensate trap into desired casing hole by inserting
robe connection stubs through casing hole and rotating until
tabs snap into locking position,
CONDENSATE TRAP TUBING
NOTE: See Fig 8 or 9 or tube routing label on main f:umace door
to check for proper connections,
Relocate robes as described below,
1. Collector Box Drain Tube
a. Remove factory=installed plug from LOWER collector box
drain robe (blue and white striped label),
b. Install removed clamp and plug into UPPER collector box
&ain robe (blue label) which was connected to condensate
t_ap.
c (onnect LOWER collector box drain connection to con=
densate trap.
(i) (ondensate Trap Located on Left Side of (asing
(a) (onnect LOWER collector box &ain robe (blue
and white striped 1abel) to condensate trap. Tube
does not need to be cut.
(b) Clamp tube to prevent any condensate leakage.

COLLECTOR BOX -'_
DRAIN TUBE (BLUE)
TUBE (GREEN)
EXTENSION TUBE
COLLECTOR BOX
TUBE (PINK)
DRAIN TUBE (BLUE
& WHITE STRIPED)
COLLECTOR BOX
EXTENSION TUBE
TRAP ©
iNDUCER HOUSING
DRAIN TUBE (VIOLET) /
A94165
Fig. 8--Downflow Tube Configuration (Left-Hand
Trap Instatlat{on)
(2) Condensate Trap Located on Right Side of (asing
(a) Install drain tube coupling d5ctow-supplied in
loose parts bag) into collector box drain robe
(blue and white striped label) which was previo
ously plugged.
(b) Connect larger diameter &ain robe (gmtoryo
supplied in loose parts bag) to &ain tube couo
piing, extending collector box drain robe for
connection to condensate trap
(c.) Route extended collector box &ain tube directly
from collector box &ain to condensate trap as
shown in Fig. 9.
(d) Determine appropriate length and cut
(e) (onnect to condensate trap
(f.) Clamp robe to prevent any condensate leakage.
2. Inducer Housing Drain Tube
a. Remove fi_ctoL-y-installed cap and clamp from LOWER
inducer housing drain connection.
b. Remove and discard UPPER (molded) inducer housing
&ain robe which was previously connected to condensate
t_ap,
c Install cap and clamp on UPPER inducer housing &ain
connection where molded &ain robe was removed.
d. Use inducer housing &ain robe (violet label and factory°
supplied in loose parts bag) to connect LOWER inducer
housing &ain connection to the condensate trap.
e. Connect inducer housing drain connection to condensate
trap.
(1.) Condensate Trap Located on Left Side of Casing
(a.) Detemline appropriate length and cut.
O O
©
,DRAIN TUBE _1_
COUPLING
Fig.
_PLUG
_CAP
_---COLLECTOR BOX
DRAIN TUBE(BLUE)
_ COLLECTOR BOX
TUBE (PINK)
COLLECTOR BOX
TUBE (GREEN)
COLLECTOR BOX
EXTENSION TUBE
COLLECTOR BOX
DRAIN TUBE (BLUE
& WHITE STRIPED)
_- COLLECTOR BOX
EXTENSION TUBE
INDUCER HOUSING
; RAIN TUBE
(VIOLET)
CONDENSATE
TRAP
b F'_'-COLLECTOR BOX
EXTENSION
DRAIN TUBE
A94166
g--Downflow Tube Configuration (Right-Hand
Trap Installation)
(b.) Connect tube to condensate trap,
(c,) Clamp robe to prevent any condensate leakage
(20 (ondensate Trap Located on Right Side of Casing
(a.) Route inducer housing drain tube (violet label)
directly from inducer housing to condensate trap
as shown in Fig. 9.
(b) Determine appropriate length and cut
(c.) Connect robe to condensate trap.
(d) (lamp robe to prevent any condensate leakage.
3. Relief Port Tube
Re_r to Pressure Switch Tubing section _br connection procedure.
CONDENSATE TRAP FIELD DRAIN ATTA(HMENT
Refkr to Condensate Drain section for recommendations and
procedures.
PRESSURE SWITCH TUBING
One collector box pressure tube (pink label) is factory connected to
the pressure switch _br use when furnace is installed in UPFLOW
applications. This robe MUST be disconnected and used for the
condensate trap relief port robe. The other collector box pressure
robe (green label) which was i:i_ctory connected to the condensate
trap relief port connection MUST be connected to the pressure
switch in DOVvL\TLOW or HORIZONTAL RIGHT applications.
NOTE: See Fig. 8 or 9 or robe routing label on main fi/mace door
to check for proper connections.
1. Disconnect collector box pressure robe (pink label) attached to
pressure switch.
2. Extend collector box pressure robe (green label) which was
previously connected to condensate trap relief port connection
by splicing to small diameter robe d;actou-supptied in loose
parts bag).

PLUG
AUXILIARY 'U" BOX COLLECTOR BOX
DRAIN TUBE
(BLUE AND WHITE STRIPED)
O
o
CONDENSATE
TRAP COLLECTOR BOX
TUBE (GREEN)
BOX EXTENSION
DRAtNTUBE
COLLECTOR BOX
EXTENSION TUBE
HOUSING
DRAIN TUBE (VIOLET)
BOX
DRAIN TUBE (BLUE)
DRAIN TUBE COUPLING
COLLECTOR BOX TUBE (PINK)
RELOCATE TUBE BETWEEN BLOWER SHELF AND INDUCER HOUSING FOR
040,060, AND 080 HEATING INPUT FURNACES A00215
Fig. 10--Horizontal Left Tube Configuration
3. (onnect collector box pressure robe (green label) to pressure
switch connection labeled COLLECTOR BOX
4. Extend collector box pressure tube (pink label) which was
previously connected to pressure switch by splicing to remain°
lug small diameter robe (factoQ'-supplied in loose parts bag).
5. Route this extended robe (pink label) to condensate t_ap relief
port connection.
6. Determine appropriate length, cut, and connect robe.
7. Clamp robe to relief port connection.
CONDENSATE TRAP FREEZE PROTECTION
Refkr to Condensate Drain Protection section for recommenda°
tions and procedures.
Step 4--Horizontal Left {Supply-Ak Discharge)
Applications
A horizontal lef[ _mlace application is where furnace blower is
located to the right of combustion and controls section of furnace,
and conditioned air is discharged to the le_L
( ONDENSATE TRAP LO(ATION
The condensate tlap must be removed from the factor-installed
blower shelf location and relocated in selected application location
as shown in Fig. 2or 10.
To relocate condensate trap from the blower shelf to desired
location, perfom_ the fbllowing:
1. Remove 3 robes connected to condensate trap
2. Remove trap fi'om blower shelf by gently pushing tabs inward
and rotating trap
3. Instal! casing hole tiller cap (factory-supplied in loose parts
bag) into blower shelf hole where trap was removed.
-->
10
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning could result in personal injury
or death.
Casing hole filler cap must be installed in blower shelf hole
when condensate trap is relocated to prevent combustion
products being drawn in from appliances in the equipment
roonl.
4. [nstall condensate trap into left-hand side casing hole by
inserting robe connection stubs through casing hole and
rotating until tabs snap into locking position.
5. Fill unused condensate trap casing holes with plastic filler
caps di_ctory-supplied in loose parts bag).
CONDEXSATE TRAP TUBING
NOTI::: See Fig. 10 or tube routing label on main furnace door to
check for proper connections.
1. Collector Box Drain Tube
a. Install &ain tube coupling (_itctory-supplied in loose parts
bag) into collector box drain robe (blue label) which was
previously connected to condensate trap
b. Connect large diameter drain robe and clamp (factory-
supplied in loose parts bag) to drain robe coupling, extend-
ing collector box &ain robe.
c. Route extended tube (blue label) to condensate trap and cut
to appropriate length.
d. Clamp robe to prevent any condensate leakage.

2.InducerHousingDrainTube
a RemoveanddiscardLOWER(molded)inducerhousing
draintubewhichwaspreviouslyconnectedtocondensate
trap.
b.Useinducerhousing&ainextensiontube(violetlabeland
fhctoD--suppliedinloosepartsbag)toconnectLOWER
inducerhousing&ainconnectiontothecondensatetrap
c.Determineappropriatelength,cut,andconnectrobe.
d.(lamprobetopreventanycondensateleakage.
3.ReliefPortTube
a.Extendcollectorboxrobe(greenlabel)whichwasprevi=
ouslyconnectedtothecondensatetrapbysplicingtosmall
diameterrobe(fhctory=suppliedinloosepartsbag).
b.Routeextendedcollectorboxpressurerobetoreliefport
connectiononthecondensatetrap.
c.Determineappropriatelength,cut,andconnectrobe.
d.Clamprobetopreventanycondensateleakage.
CONDENSATETRAPFIELDDRAINATTACHMENTS
RefertoCondensateDrainsectionfbrrecommendationsand
procedures.
PRESSURESWIT(HTUBING
TheLOWERcollectorboxpressuretube(pinklabel)isfhctory
connectedtothepressure switch for use when Ihrnace is installed
in UPFLOW applications. This robe MUST be disconnected,
extended, rerouted, and then reconnected to the pressure switch in
HORIZONTAL LEFT applications.
NOTE: See Fig. 10 or tube routing label on main Nrnace door to
check for proper connections.
Modif}" robe as described below.
1. Disconnect collector box pressure tube (pink label) attached to
pressure switch.
2. Use smaller diameter tube (factov-supplied in loose parts
bag) to extend robe disconnected in item 1.
3. Route extended robe:
a. Behind inducer housing,
b. Between blowe* shelf" and inducer housing.
c. Behind inducer motor bracket.
d. Between inducer motor and pressure switch.
4. Detem_ine appropriate length, cut, and reconnect robe to
pressure switch connection labeled COLLECTOR BOX.
CONDENSATE TRAP FREEZE PROTECTION
Refer to Condensate Drain Protection section for recommenda°
tions and procedures.
CONSTRU(T A WORKING PLATFORM
Construct working platfbrm where all required Ihrnace clearances
are met, (See Fig. 3 and 11.)
[TNIT MAY NOT OPERATE
Failure to %llow this caution may result in intem_ittent unit
operation.
The condensate trap MUST be installed below furnace See
Fig 5 ibr dimensions. The drain connection to condensate
trap must also be properly sloped to an open &ain.
NOTE: Combustion-air and vent pipes are restricted to a mini°
mum length of 5 it. (See Table 7.)
--€
11
NOTE: A 12-in mininmm of_ket pipe section is recommended
with short (5 to 8 It) vent systems. This recommendation is to
reduce excessive condensate droplets fiom exiting the vent pipe,
(See Fig 11 or 34)
Step 5--Horizontal Right {Supply-Air Discharge)
Applications
A horizontal right furnace application is where furnace blowei is
located to the left of combustion and contlols section of ihmace,
and conditioned air is discharged to the right.
PROPERTY DAMAGE
Failure to ibllow this caution may result in minor property
damage
Local codes may require a drain pan under entire Ihrnace and
condensate trap when a condensing fhrnace is used in attic
application or over a finished ceiling.
NOTE: In Canada, installations shall be in accordance with
cun'ent NS(NGPI( Installation Codes and/or local codes
NOTE: The junction box (J-Box) MUST be relocated to opposite
side of furnace casing. (See Fig. 12.) See Electrical Connection
section for J-Box relocation.
CONDENSATE TRAP LOCATION
The condensate trap must be removed fi'om the fi_ctory°installed
blower shelf location and relocated in selected application location
as shown in Fig. 2 or 12,
To relocate condensate trap fiom the blowei shelf to desired
location, perfbnn the following:
1 Remove 3 tubes connected to condensate nap.
2. Remove trap from blower shetfby gently pushing tabs inward
and rotating trap.
3. Install casing hole filler cap (ihctory=supplied in loose parts
bag) into blower shelf hole where trap was removed.
CARBON MONOXIDE POISONING HAZARD
Failure to follow this warning coutd result in personal inju W
or death.
Casing hole filler cap must be installed in blower shelf" hole
when condensate trap is relocated to prevent combustion
products being drawn in from appliances in the equipment
roonl.
4. Install condensate trap into left=hand side casing hole by
inserting tube connection stubs through casing hole and
rotating until tabs snap into locking position.
5 Fill unused condensate tlap casing holes with plastic filler
caps (Pactory=supplied in loose parts bag).
CONDENSATE TRAP TUBING
NOTE: See Fig. 12 or robe routing label on main Ihrnace door to
check for proper connections
1 Collector Box Drain Tube
a Remove factory-installed plug from LOWER collector box
drain robe (blue and white striped label).
b Install removed clamp and plug into UPPER collector box
drain tube (blue label) which was previously connected to
condensate trap.
c Connect LOWER collector box drain tube (blue and white
striped label) to condensate trap Tube does not need to be
cut,

COMBUSTIONINTAKE
VENT
12-1N. MIN HORIZONTAL PIPE
SECTION iS RECOMMENDED WITH
SHORT (5 TO 8 FT) VENT SYSTEMS
TO REDUCE EXCESSIVE
CONDENSATE DROPLETS FROM
EXITING THE VENT PIPE.
SHUTOFF
GAS VALVE ACCESS OPENING
FOR TRAP
SEDIMENT
TRAP CONDENSATE
TRAP
DRAIN
NOTE: LOCAL CODES MAY REQUIRE A DRAIN PAN UNDER THE
FURNACE AND CONDENSATE TRAP WHEN A CONDENSING
FURNACE IS INSTALLED ABOVE FINISHED CEILINGS.
Fig. 11--Attic Location and Working Platform
BOX DRAIN TUBE (BLUE)
COLLECTOR BOX TUBE (GREEN)
BOX EXTENSION TUBE
COLLECTOR BOX TUBE (PINK)
RELOCATED HERE
A93031
COLLECTOR BOX DRAIN TUBE
(BLUE AND WHFE STRIPED)
CONDENSATE
TRAP
INDUCER
DRAINTUBE(VIOLET)
COLLECTOR BOX i'/
EXTENSION TUBE
Fig. 12--Horizonta{ Right Tube Configuration
A00214
12

d. (lamp robe to prevent any condensate leakage.
2. Inducer Housing Drain Tube
a Remove fhctoryoinstalled cap and clamp from LOWER
inducer housing drain connection.
b. Remove and discard UPPER (molded) inducer housing
drain robe which was previously connected to condensate
trap.
c. Install cap and clamp on UPPER inducer housing &ain
connection where molded &ain robe was removed.
d. Use inducer housing &ain extension tube (violet label and
factory-supplied in loose parts bag) to connect LOWER
inducer housing &ain connection to condensate trap.
e. Detem_ine appropriate length, cuL and connect robe to
condensate trap.
f\ Clamp tube to prevent any condensate leakage.
3. Relief Port Tube
Refer to Pressure Switch Tubing section for connection
procedure.
(ONDENSATE TRAP FIELD DRAIN ATTA(HMENT
Refer to Condensate Drain section %r recommendations and
procedures
PRESSURE SWITCH TUBING
One collector box pressure tube (pink label) is f'_ctory connected to
the pressnre switch fbr use when furnace is installed in UPFLOW
applications This tube MUST be disconnected and used for the
condensate trap relief port robe. The other collector box pressnre
robe (green label) which was fSctory connected to the condensate
trap relief port connection MUST be connected to the pressure
switch in DOWNFLOW or HORIZONTAL RIGHT applications
NOTE: See Fig. 12 or tube routing label on main filrnace door to
check for proper connections Relocate tubes as described below
1. Disconnect collector box pressure tube (pink label) attached to
pressure switch.
2. Extend collector box pressure tube (green label) which was
previously connected to condensate trap relief porq_connection
by splicing to small diameter robe (factov-supptied in loose
parts bag).
3. Route extended collector box pressure robe behind inducer
motor bracket then between inducer motor and pressure
switch,
4. Connect collector box pressm'e tube (green label) to pressure
switch connection labeled COLLE(TOR BOX.
5. Use remaining smaller diameter tube (gtctoryosupplied in
loose parts bag) to extend collector box pressure robe (pink
label) which was previously connected to pressure switch.
d. Route this extended robe (pink label) to condensate trap relief
port connection.
7. Detem_ine appropriate length, cut, and connect robe.
8. Clamp robe to relief port connection.
(ONDENSATE TRAP FREEZE PROTECTION
Re[kr to (ondensate Drain Protection section %r recommendao
tions and procedt/res.
(ONSTRUCT A WORKING PLATFORM
Construct working platfbm_ where all required furnace clearances
are met. (See Fig 3 and 11)
13
UPFLOW OR DOWNFLOW
V2" MAX
HORIZONTAL A02146
Fig. 13--Furnace Location for Proper Condensate
Drainage
UNIT MAY NOT OPERATE
Failure to [bllow this caution may result in intem_ittent unit
operation.
The condensate trap MUST be installed below furnace See
Fig. 5 for dimensions. The drain connection to condensate
trap must also be properly sloped to an open drain.
NOTE: (ombustionoair and vent pipes are restricted to a mini-
mun_ length of 5 ft. (See Table 7.)
NOTE: A 12oin. mininmm of_;et pipe section is recommended
with short (5 to 8 ft) vent systems. This recomn_endation is to
reduce excessive condensate droplets fi'om exiting the vent pipe.
(See Fig. 11 or 34.)
LOCATION
Step t--General
This furnace must
* be installed so the electrical components are protected from
water
not be installed directly on any combustible material other than
wood flooring (refer to SAFETY CONSIDERATIONS).
* be located so combustion-air and vent pipe n_aximum lengths
are not exceeded. Re[_r to Table 7.
* be located where available electric power and gas supplies meet
specifications on the furnace rating plate.
* be attached to an air distribution system and be located as close
to the center of the distribution system as possible. Re['cr to Air
Ducts section.
* be provided with ample space fbr servicing and cleaning.
Always comply with nainimun_ fire protection clearances
shown on the furnace clearance-toocombustibles label.
This fi_rnace may be located in a confined space without special
provisions fbr dilution or ventilation air.
When a fm'nace is installed so that supply/lucts caro- air circulated
by d_e ftm_ace to areas outside the space containing the f'umace.
the return air shall also be handled by ducts sealed to filrnace
casing. The &lcts terminate outside the space containing the
ft_rnace to ensure there will not be a negative pressure condition
within equipment room or space.
NOTE: For upflowidownflow applications install furnace so that
it is level or pitched [brward within 1i2oin. for proper furnace
operation. For horizontal applications pitch 1/4-in. minimtml to
1i2oin. maxinmnl forward to ensure proper condensate &ainage
from secondary heat exchangers. (See Fig. 13.)

---5
---5
BACK
A93043
Fig. 14--Prohibit Installation on Back
FIRE HAZARD
Failure to %llow this warning could result in fire, property
damage, personal injury or death.
Do not install furnace on its back. Safety control operation
will be adversely affected. Never connect return=air ducts to
back of Nmace. (See Fig. 140
[TNIT DAMAGE HAZARD
This gas fire, ace may be used fbr construction heat provided
that:
-The ftm_ace is permanently installed with all electrical
wiring, piping, air filters, venting and ducting installed
according to these installation instructions. A retnrn air duct
is provided, sealed to the furnace casing, and terminated
outside the space containing the fkmlace. This prevents a
negative pressure condition as created by the circulating air
blower, causing a flame rollout and/or &awing combustion
products into the stl_acture.
-The furnace is controlled by a thermostat. It may not be "hot
wired" to provide heat continuously to the strt/cture without
thermostatic control.
-(lean outside air is provided for combustion. This is to
minimize the corrosive effects of adhesives, sealers and other
construction materials. It also prevents the entrainment of
dwwall dust into cornbusfion air, which can cause %uling and
plugging of Nmace components.
-The temperature of the return air to the fhmace is maintained
between 55cT (13c>() and 80°F (27_>(), with no evening
setback or shutdown. The use of the Nmace while the
stl_acture is under construction is deemed to be intermittent
operation per our installation instructions.
-The air temperature rise is within the rated rise range on the
furnace rating plate, and the firing rate has been set to the
nameplate value.
-The filters used to clean the circulating air during the
construction process nmst be either changed or thoroughly
cleaned prior to occupancy.
-The Nmace, ductwork and filters are cleaned as necessary to
remove &ywall dust and construction debris t)om all HVAC
system components after construction is completed.
-After construction is complete, verify Nmace operating
conditions including ignition, input rate, temperature rise and
venting, according to the manufi_cmrer's instluctions.
A93058
Fig. 15--Freeze Protection
M
[NIT DAMAGE HAZARD
Failure to £bllow this caution may result in minor property or
unit damage.
If Nrnace is installed in an unconditioned space where the
arnbient temperatures may be 3UT or lower, fi'eeze protection
measures must be taken. (See Fig. 15.)
Step 2--Furnace Location Relative to Cooting
Equipment
)"he cooling coil must be installed parallel with or oll downstream
side of t:urnace to avoid condensation in heat exchanger. When
installed parallel with a fi/mace, dampers or other means used to
control flow of air shall be adequate to prevent chilled air from
entering t:urnace. If dampers are manually operated, they must be
equipped with a means to prevent operation of either unit, unless
damper is in fgll=heat or full-cool position.
Step a--Hazardous Locations
14
FIRE, EXPLOSION, IN J[ RY OR DEATH HAZARD
Improper location or inadequate protection could result in fire
or explosion
When fhmace is installed in a residential garage, it must be
installed so that burners and ignition sources are located a
mininmn_ of 18 in. above floor. The fi/mace must be located
or protected to avoid physical damage by vehicles. When
ft_rnace is installed in a public garage, airplane hangar, or
other building having a hazardous atmosphere, the t'umace
must be installed in accordance with NFGC or NS(NGPIC.
(See Fig. 16.)
mNSTALLATION
Step l--Leveling Legs {ff Desired)
When f_/rnace is nsed in upftow position with side inlet(s), leveling
legs may be desired. (See Fig. I7.) Install field-supplied,
corrosion-resistant 5/16°in machine bolts and nuts.
NOTE: The maximum length of bolt should not exceed 1-1/2 in.
1. Position furnace on its back. Locate and drill a 5/16 in.
diameter hole in each bottom corner of furnace. (See Fig. 17.)
Holes in bottom closure panel may be used as guide locations.

4 If downflow subbase (KGASB) is use& install as shown in
Fig. 19
If (?oil Assembly Part No, (D5 or CK5 or (?oil Box Part No,
K(AK( is use& install as shown in Fig 20_
18-IN. MINIMUM
TO BURNERS
Fig. 16--Installation in a Garage
A93044
A89014
Fig. 17--Leveling Legs
2_ For each hole. install nut on bolt and then install bolt and nut
in hole_ (Install flat washer if desired.)
3_ Install another nut on other side of fi/rnace base. (Install flat
washer if desired.)
4. Adjust outside nut to provide desired height, and tighten inside
nut to secure arrangement.
NOTE: Bottom closure must be used when leveling legs are used.
See Bottom Closure Panel section.
Step 2--Installation in Upflow and Downflow
Applications
NOTE: For downt'tow applications_ this fllmace is approved for
use on combustible flooring when special base (available from
manu_acmrer) Part No. KGASB0201ALL is used. Special base is
not required when this :[ilmace is installed on manu_hcmrer's (?oil
Assembly Part No. CD5 or CK5, or (?oil Box Part No. KCAKC is
used.
1. Detemaine application being installed t'rom Table 1.
2. Construct hole in floor per dimensions specified in Table 1
and Fig. 18.
3. (onstruct plenum to dimensions specified in Table 1 and Fig.
18.
15
A96283
Fig. 18--Floor and Plenum Opening Dimensions
FURNACE
(OR COIL CASING
WHEN USED)
COMBUSTIBLE
FLOORING "_
DOWNFLOW
SUBBASE
SHEET METAL
PLENUM
-- FLOOR --
OPENING
A96285
Fig. 1g--Furnace, Plenum, and Subbase Installed
on a Combustib{e Floor
NOTE: Remove furnace per_brated, discharge duct flanges when
they inter['_re with mating flanges on coil on downflow subbase.
To remove fl/mace perforate& discharge duct flange, use wide
duct pliers or duct flange tool or hand seamers to bend flange back
and forth until it breaks off. Be carefl/t of sharp edges. (See Fig.
21)

FURNACE
CASBNG
WIDTH
Table 1--OpeNng Dimensions (in.)
APPLICATION FLOOR OPENING
D
24-3/4
19-5/8
PLENUM OPENING
A B
16 24-1/8
15-7/8 19
15-1/8 19
15-1/2 19
19-1/2 24-1/8
19-3/8 19
18-5/8 19
19 19
23 24-1/8
22-7/8 19
22-1/8 19
22-1/2 19
C
Upflow Applications 16-5/8
Downflow Applications on Non-Combustible Flooring 16-1/2
Downflow Applications on Combustible Flooring Using
KGASB Subbase 16-3/4 20-3/8
17-112 Furnace with or without CD5 or CK5 Coil Assembly or
KCAKC Coil Box
Downflow Applications on Combustible Flooring NOT Using
KGASB Subbase
Furnace with or without CD5 or CK5 Coil Assembly or 16-1/2 20
KCAKC Coil Box
Upflow Applications 20-1/8 24-3/4
Downflow AppIications on Non-Combustible Flooring 20 1%5/8
Downflow Applications on Combustible Flooring Using
KGASB Subbase 20-1/4 20-3/8
21 Furnace with or without CD5 or CK5 Coil Assembly or
KCAKC Coil Box
Downflow Applications on Combustible Flooring NOT Using
KGASB Subbase
Furnace with or without CD5 or CK5 Coil Assembly or 20 20
KCAKC Coil Box
Upflow Applications 23-5/8 24-3/4
Downflow Applications on Non-Combustible Flooring 23-1/2 1%5/8
Downflow Applications on Combustible Flooring Using
KGASB Subbase 23-3/4 20-3/8
24-112 Furnace with or without CD5 or CK5 Coil Assembly or
KCAKC Coil Box
Downflow Applications on Combustible Flooring NOT Using
KGASB Subbase
Furnace with or without CD5 or CK5 Coil Assembly or 23-1/2 20
KCAKC Coil Box
FURNACE
CD5 OR CK5
COIL ASSEMBLY
OR KCAKC
COIL BOX
/_ COMBUSTIBLE
FLOORING "k
SHEET METAL ._,.
PLENUM
__ FLOOR __
OPENING
A96284
Fig. 20--Furnace, Plenum, and Coil AssemNy or
Coil Box Installed on a Combustib{e Floor
16
[TNIT MAY NOT OPERATE
Failure to %ltow this caution may result in intem_ittent unit
operation.
Do not bend duct flanges inward as shown in Fig 2! This
will affect airflow across heat exchangers and may cause limit
cycling or premature heat exchanger _itilure, Remove duct
flange completely or bend it inward a minimum of 2!0 ° as
shown in Fig, 21
NOTE: For 140 size unit when installed in downflow orientation,
cut the white jumper wire offbetween terminals PL]-7 and PLI=9.
Do not cut white jumper between tem_inals PLI=7 and PLI-11.
Refer to Fig. 30 _br location of jumper (ut jumper close to
connector and remove wire to avoid a short circuit
Step a--installation in Horizontal Applications
UNIT MAY NOT OPERATE
Failure to _bltow this caution may result in intem_ittent unit
operation.
The entire length of _i/rnace MUST be supported when
furnace is used in a horizontal position to ensure proper
draining. When suspended, bottom brace supports sides and
center blower shelf When unit is supported fi'om the ground,
blocks or pad should support sides and center blower shelf
area.
These fmnaces can be installed horizontally in either horizontal
te_ or right discharge position. In a crawlspace, t'm'nace can either
be hung from floor joist or installed on suitable blocks or pad.
Furnace can be suspended flora each corner by hanger bolts and

angle iron s_/pports (See Fig. 22.) Cut hanger bolts (4 each 3/8=in.
all=thread rod) to desired tength. Use 1 X 3/8=in flat washers,
3/8-in. tock washers, and 3/8=in nuts on hanger rods as shown in
Fig 22. Dimples are provided fbr hole locations. (See Fig 2)
if constructed and installed in accordance with the latest edition of
SMAENA construction 18 standard on fibrous glass ducts. Both
acoustical lining and fibrous ductwork shall comply with NFPA
90B as tested by EL Standard 18! for (?lass 1 Rigid air ducts.
DISCHARGE DUCT
FLANGE
210°
MIN
NO
YES
YES
A93029
Fig. 21--Duct Flanges
Step 4--Air Duets
GENERAL REQUIREMENTS
The duct system should be designed and sized according to
accepted national standards such as those published by: Air
Conditioning Contractors Association (ACCA), Sheet Metal and
Air Conditioning ContIactors National Association (SMACNA) or
American Society of Heating, Refrigerating and Air Conditioning
Engineers (ASHRAE) or consult Fhe Air 51v,ste_sDesiglv G_ide-
trees rel:_rence rabies available fiom your local distributor. The
duct system should be sized to handle the required system design
CFM at the design static pressure.
When a furnace is installed so that the supply ducts catty- air
circulated by the t:urnace to areas outside the space containing the
Nrnace, the return air shall also be handled by a duct(s) sealed to
the furnace casing and tem_inating outside the space containing the
furp, ace
Secure ductwork with proper fasteners for type of ductwork used.
Seal supply- and return-duct connections to furnace with code
approved tape or duct sealer.
Flexible connections should be used between ductwork and
furnace to prevent tlansmission of vibration. Ductwork passing
through unconditioned space should be insulated to enhance
system performance. When air conditioning is used, a vapor
battier is recommended.
Maintain a l-in. clearance fi'om combustible materials to supply air
ductwork for a distance of 36=in. horizontally fiom the furnace.
See NFPA 90B or local code fbr further requirements.
For a fhmace not equipped with a cooling coil, the outlet duct shall
be provided with a removable access panel. This opening shall be
accessible when the t:urnace is installed and shall be of such a size
that the heat exchanger can be viewed fbr possible openings using
light assistance or a probe can be inserted for sampling the air
stream. The cover attachment shall prevent leaks.
DUCTWORK ACOUSTIE AL TREATMENT
Metal duct systems that do not have a 90 degree elbow and 10 ft
of main duct to the first branch take-off may require internal
acoustical lining. As an aheraative, fibrous ductwmk may be used
SUPPLY AIR CONNECTIONS
Upflow Furnaces
Connect supply=air duct to 3/4-in. flange on furnace supply-air
outlet. The supply=air duct attachment must be connected to
ONLY fhmace supply-/outlet=air duct flanges or air conditioning
coil casing (when used) DO NOT cut main fhmace casing to
attach supply side air duct, humidifier, or other accessories All
accessories MUST be connected external to furnace main casing.
Downflow Furnaces
(onnect supply-air duct to supply-air opening on fllrnace. The
supply-air duct attachment must be connected to ONLY fhrnace
supply/outlet or air conditioning coil casing (when used), when
installed on non=combustible material. When installed on combus-
tible material, supply=air duct attachment must be connected to
ONLY an accessory subbase or Pactory approved air conditioning
coil casing. D() NOT cut main furnace casing to attach supply side
air duct, humidifier, or other accessories. All accessories MUST be
connected external to furnace main casing. Supply air opening duct
flanges must be modified per Fig. 21.
Horizontal Furnaces
Connect supply=air duct to supply air opening on furnace. The
supply-air duct attachment must be connected to ONLY fhmace
supply/outlet or air conditioning coil casing {when used). DO NOT
cut main furnace casing to attach supply side air duct, humidifier,
or other accessories. All accessories MUST be connected external
to fhrnace main casing.
RETURN AIR CONNECTIONS
The furnace and its return air system shall be designed and
installed so that negative pressure created by the air circulating fan
cannot affect another appliance's combustion air supply or act to
mix products of combustion with circulating air. The air circulat-
ing fhn of the furnace, if installed in an enclosure communicating
with another filel=buming appliance not of the direct=vent type,
shall be operable only when any door or panel covering an opening
in the fhmace fhn compartment or in a return air plenum on ducts
is in the closed position.
FIRE HAZARD
A failure to _bltow this warning could result in fire, personal
injury, or death.
Never connect return=air ducts to d_e back of the _hmace.
Return=air duct connections on furnace side{s) peimitted in
upflow applications only
Upflow Furnaces
The return-air duct mttst be connected to bottom, sides (le_:_ or
right), or a congbination of bottom and side(s) of main furnace
casing as shown in Fig. 2. Bypass humidifier may be attached into
unused side return air portion of the furnace casing DO NOT
connect any portion of return=air duct to back of furnace casing
Downflow and Horizontal Furnaces
The return=air duct must be connected to end inlet opening
provided as shown in Fig. 2. DO NOT cut into casing sides or back
to attach any portion of return-air duct. Bypass humidifier connec-
tions should be made at ductwork or coil casing sides exterior to
furnace
17

ANGLE
IRON OR
EQUIVALENT
3/8-1N.ROD
ALTERNATE SUPPORT
LOCATION 4-IN. MIN
8-IN. MAX
(B)
(A) ROD LOCATION
USING DIMPLE
LOCATORS
(SEE DIMENSIONAL
DWG FOR
LOCATIONS)
3/8-1N.HEX
& WASHER (4)
REQD PER ROD
(B) ALTERNATE SUPPORT
LOCATION FROM BACK
(A) PREFERRED ROD LOCATION
(B) ALTERNATE ROD LOCATION
NOTES: 1. A 1 In. clearance minimum between top of
furnace and combustible material.
2. The entire length of furnace must be
supported when furnace is used in horizontal
position to ensure proper drainage.
Fig. 22--Crawlspace Horizonta{ ApNication
A93304
Step 5--Filter Arrangement
FIRE, CARBON MONOXIDE AND POISONING
HAZARD
Failure to %llow this warning co_dd result in fire_ personal
injur?% or death
Never operate fi/rnace without a filter or with filter access
door removed.
The air filter an'angement will va N" due to application, furnace
orientation, and filter type. The filter may be installed in an
external Filter/Media cabinet (if provided) or the t'umace blower
compartment. Facto_ supplied washable filters are shipped in the
blower compartment.
If a factoryosupplied external Filter Media cabinet is provided,
instructions for its application, assembly, and installation are
packaged with the cabinet. The Filter/Media cabinet can be used
with the fitctoryosupplied washable filter or a factor'-specified
highoefficiency disposable filter (see cabinet instructions)
If installing the filter in the t_urnace blower compartment, deter-
mine location %r filter and relocate filter retaining wire, if
necessary. See Table 2 to determine correct filter size for desired
filter location. Table 2indicates filter size, location, and quantity
shipped with this filrnace. See Fig. 2 %r location and size of
bottom and side returnoair openings.
18
(IT HAZARD
Failure to %llow this caution may result in minor personal
ir!iury
Use care when cutting support rods in filters to protect against
flying pieces and sharp rod ends. Wear safety glasses, gloves,
and appropriate protective clothing.
[TNIT MAY NOT OPERATE
Failure to fc4tow this caution may result in intem_ittent unit
operation.
For airflow requirements above 1800 CFM, see Air Deliver-
table in Prodnct Data literature %r specific use of single side
inlets The use of both side inlets, a combination of 1 side and
the bottom, or the bottom only will ensure adequate return air
openings for airflow requirements above 1800 CFM.
NOTE: Side remrnoair openings can ONLY be used in UPFLOW
configurations. Install filter(s) as shown in Fig 23 Bottom
return-air opening may be used with all 4 orientations. Filter may
need to be cut to fit some furnace widths. Install filter as shown in
Fig. 24.
NOTE: Remove and discard bottom closure panel when bottom
inlet is used.

Table 2--FHter Information
AmRFBLTER LOCATED }N BLOWER COMPARTMENT
FURNACE FILTER SIZE (IN.) FILTER
CASBNG
WIDTH {IN.) Side Return Bottom Return TYPE
17=112 (1) 16 X 25X 11. (1) 16 X 25 X 11- CleanaNe
21 (1) 16X25X 1" (1) 20X25X 11- Cleanabte
24=112 (1 or 2) 16X25X1* (1) 24X25X 11- Cleanabie
* Filters may be field modified by cutting filter matedaland support rods (3) in
filters Alternate sizes and additional filters may be ordered from your dealer
? Factory-provided with furnace.
17_-IN.WIDE
CASINGS ONLY:
INSTALL FELD-SUPPLIED
FILTER FILLER STRIP
UNDER FILTER.
FILTER
RETAINER
\
Fig. 23--FiRer Installed for Side INet
A93045
Step 6--Bottom Closure PaneJ
These f_tmaces are shipped with bottom enclosure panel installed
in bottom return=air opening This panel MUST be in place when
side return air is used,
To remove bottom closure panel, perfbm_ _bllowing:
l, Tilt or raise tin'hate and remove 2 screws holding flont filler
panel, (See Fig 25,)
2, Rotate front filler pane1 downward to release holding tabs
3, Remove bottom closure pane1
4, Reinstall fi'ont _lle* panel and screws,
Step 7--Gas Piping
Gas piping must be installed in accordance with national and local
codes. Refer to cmTent edition of NFG( iu the United States.
(anadian iustallations must be made iu accordance with NSCNG=
PIC and all authorities having jurisdiction.
Gas supply line should be a separate line rurming directly t'rom
meter to furnace, if possible. RefEr to Table 3 _br recommended
gas pipe sizing Risers must be used to cormect to _i/rnace aud to
meter. Support all gas piping with appropriate straps, hangers, etc
Use a minimum of I hanger ever?" 6 t't. Joint con_pound (pipe dope)
should be applied sparingly and only to male threads of joints. Pipe
dope must be resistant to propane gas.
=WASHABLE
FILTER
SUPPORT
FILTER
RETAINER
Fig. 24_Bottom FHter Arrangement
A00213
}
BOTTOM
CLOSURE
PANEL
FRONT FILLER
PANEL A93047
Fig. 2g--Removing Bottom Closure Panel
19

TaNe 3--Maximum Capacity of Pipe*
NOMINAL
IRON
PIPE
SmZE
ON.)
I/2
3/4
I
1-1/4
1-1t2
iNTERNAL
DIAMETER
(IN.)
0.622
0.824
1.049
1.380
1.610
LENGTH OF PIPE (FT}
10 20 30 40 50
175 120 97 82 73
360 250 200 170 151
680 465 375 320 285
1400 950 770 660 580
2100 1460 1180 990 900
* Cubic ft of gas per hr for gas pressures of 0.5 psig (14-in wc) or less and a
pressure drop of 0.5-in wc (based on a 060 specific gravity gas).
Ref: Table 9.2 NFGC.
FIRE OR EXPLOSION HAZARD
Failm'e to %llow this wa*ning could result in fire, explosion,
personal inju W, or death
-(onnect gas pipe to 5n'nace using a backup wrench to avoid
damaging gas controls.
-Gas valve shutoff switch MUST be fhcing fbrward or tilted
upward.
-Never pu*ge a gas line into a combustion chamber. Never
test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for the detection of
leaks to check all connections.
-Use proper length of pipe to avoid stress on gas control
manifbld.
-If a /'lexible connector is required or allowed by attthori w
having jurisdiction, black iron pipe shall be installed at
fimaace gas valve and extend a mininmm of 2 in outside
furnace casing.
Install a sediment trap in riser leading to fl/mace. Trap can be
installed by connecting a tee to riser leading to t\u'nace so
straight-through section of tee is vertical Then connect a capped
nipple into lower end of tee. (apped nipple should extend below
level of gas controls. Place a ground joint union between gas
control manifold and manual gas shutoff valve. (See Fig 26.)
If local codes allow the use of a flexible gas appliance connector,
always use a new listed connector. Do not use a connector which
has previously served another gas appliance.
FIRE OR EXPLOSION HAZARD
Failure to f\fllow the safkty warnings exactly could result in
serious injury, death or property damage
Never test for gas leaks with an open flame. Use a commer-
cially available soap solution made specifically for the
detection of leaks to check all connections A fire or explo°
sion could result causing property damage, personal ir!iury or
toss of life
An accessible manual shutoff valve MUST be installed external to
fl/mace casing and within 6 ft of filmace. A li8°in. NPT plugged
tapping, accessible for test gage connection, MLST be installed
immediately upstream of gas supply connection to furnace and
downstIeam of manual shutoff valve
NOTE: The gas valve inlet pressure tap connection is suitable to
use as test gauge connection providing test pressure DOES NOT
exceed maximum 0.5 psig (14-in. wc) stated on gas control valve
(See Fig. 57)
GAS
SUPPLY
MANUAL _/ II
f
A93324
Fig. 26--Typical Gas Pipe Arrangement
Piping should be pressure and leak tested in accordance with
NFG( in the United States or NSCNGPI( in Canada. local, and
national plumbing and gas codes be_;ore the t'urnace has been
connected. After all connections have been made. purge lines and
check for leakage at furnace prior to operating t:urnace.
If pressure exceeds 0.5 psig (14=in. wc), gas supply pipe must be
disconnected from ftlrnace and capped be_bre pressure test If test
pressure is equal to or less than 0.5 psig (14=in. wc), turn off
electIic shutoff switch located on _hrnace gas control valve and
accessible manual shutoff valve before test After all connections
have been made, purge lines and check fbr leakage.
The gas supply pressure shall be within the maximum and
minimum inlet supply pressures marked on the rating plate with
the fl/rnace burners ON and OFF.
Step 8--Electrical Connections
See Fig 27 for field wiring diagram showing typical field 115-v
and 24-v wiring (hock all fhctoo" and field electrical connections
for tightness
Field=supplied wiring shall conform with the limitations of 63_T
(33°(7) rise.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in serious injury or
death
Blower access door switch opens 115-v power to control. No
component operation can occur Do not bypass or close
switch with panel removed
2O
FURNACE MAY NOT OPERATE/PROPERTY
DAMAGE
Failure to %llow this caution may result in fhraace operation
stopping and water pipes freezing during cold weather.
Furnace control must be grounded for proper operation or
control will lock out. (ontrol is grounded through
green yellow wire connected to gas valve and burner box
SCrew,
115 V WIRING
Be_bre proceeding with electrical connections, make certain that
voltage, fi'equency, and phase con'espond to that specified on
furnace rating plate. Also, check to be sure that service provided