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Variable Speed, 2-Stage  

Upflow / Horizontal and 

Downflow / Horizontal, Gas-Fired Furnaces, 

“Fan Assisted Combustion System”

A341789P10

Installer’s Guide

Downflow / Horizontal*

Upflow / Horizontal*

For VENT SIZING INFORMATION see:

USA —

National Fuel Gas Code ........... ANSI Z223.1/NFPA 54 (latest version)

CANADA —

 

Natural Gas Installation Code ........CAN/CGA-B149.1 (latest version) 
Propane Installation Code ...............CAN/CGA-B149.2 (latest version)

USA/CANADA ALTERNATE —

 

Category I Venting Guide ...........Pub. No. 18-CH23D1 (latest version)

*Horizontal Conversion for these furnaces may be left or right side rotation.

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES

IMPORTANT — 

This Document is 

customer property

 and is to remain with this unit.   

Please return to service information pack upon completion of work.

*__First letter may be “A” or “T”

*UD2B060A9V3VB

*UD2B080A9V3VB

*UD2C080A9V4VB

*UD2C080B9V4VB

*UD2B100A9V3VB

*UD2C100A9V5VB

*UD2C100B9V5VB

*UD2D120A9V5VB

*UD2D120B9V5VB

*UD2D140A9V5VB

*DD2B060A9V3VA

*DD2B080A9V3VA

*DD2C100A9V5VA

*DD2D120A9V5VA

*DD2-9V

*UD2-9V

18- CD31D1- 3

Summary of Contents for ADD2B060A9V3VA

Page 1: ...ERNATE Category I Venting Guide Pub No 18 CH23D1 latest version Horizontal Conversion for these furnaces may be left or right side rotation ALL phases of this installation must comply with NATIONAL ST...

Page 2: ...emperature rise and venting according to the manufacturer s instructions 10 This product must be gas piped by a Licensed Plumber or Gas Fitter in the Commonwealth of Massachusetts Safety signal words...

Page 3: ...ctions Category I defined on page 13 S CAUTION To prevent shortening its service life the furnace should not be used as a Construction Heater during the finish ing phases of construction until the req...

Page 4: ...ONS ARE IN INCHES MODEL DIM A DIM B DIM C DIM D UD2B060A9V3VB UD2B080A9V3VB UD2B100A9V3VB 17 1 2 9 5 8 16 1 4 16 UD2C080A9V4VB UD2C080B9V4VB UD2C100A9V5VB UD2C100B9V5VB 21 13 1 16 19 3 4 19 1 2 UD2D12...

Page 5: ...h 1 Rev 0 DD2 9V OUTLINE DRAWING ALL DIMENSIONS ARE IN INCHES MODEL DIM A DIM B DIM C DIM D DD2B060A9V3VA DD2B080A9V3VA 17 1 2 9 5 8 16 1 4 16 DD2C100A9V5VA 21 13 1 16 19 3 4 19 1 2 DD2D120A9V5VA 24 1...

Page 6: ...The coil and furnace must be fully supported when used in the horizontal Three brackets with screws are included with downflow furnaces for installation to stabilize and secure the furnace and TXC cas...

Page 7: ...d caulked vapor bar rier etc may need additional air provided as described for confined space Confined spaces are installations with less than 50 cu ft of space per 1000 BTU hr input from all equipmen...

Page 8: ...utility room adjacent to the living area the system should be carefully designed with returns which minimize noise transmission through the return air grille Although these winter air condition ers a...

Page 9: ...urn duct is attached to the top side as shown in Figure 11 remove the filter from the furnace and install in a remote location Do not install the filter in the return duct directly above the furnace i...

Page 10: ...r upflow 5 ton airflow models where the airflow requirement exceeds 1800 CFM Models will require re turn air openings and filters on 1 both sides or 2 one side and the bottom or 3 just the bottom The...

Page 11: ...ks into the engagement hole in the blower deck and the lower pin screw rests against the side of the bottom panel See Figures 17 20 f Reinstall the furnace filter in the side position by inserting the...

Page 12: ...OT CUT CUT ON LINE 24 1 2 DO NOT CUT CUT ON LINE INSTALLING THE FILTER The filter may need to be cut to fit the unit depending on the location of the return air filter A score line and the words CUT H...

Page 13: ...X1 13 1 8 24 1 2 2 16X20X1 11 5 8 Location dimension is from end of duct to the screw holes for the bracket VENT PIPING These furnaces have been classified as Fan Assisted Combustion System Category I...

Page 14: ...eight determined by National Fuel Gas Code or local codes It should be capped properly to prevent rain water from entering the vent Roof exit should be wa terproofed 7 Use type B double wall vent when...

Page 15: ...re injury or death Make wiring connections to the unit as indicated on en closed wiring diagram As with all gas appliances using electrical power this furnace shall be connected into a permanently liv...

Page 16: ...16 18 CD31D1 3 Installer s Guide FIELD WIRING DIAGRAMS...

Page 17: ...18 CD31D1 3 17 Installer s Guide FIELD WIRING DIAGRAMS...

Page 18: ...ON Use a backup wrench on the gas valve when installing gas piping to prevent damage to the gas valve and manifold assembly NOTE Maximum pressure to the gas valve for natural gas is 13 8 W C Minimum p...

Page 19: ...high HI adjustment regulator cover screw a To increase outlet pressure turn the regulator ad just screw clockwise b To decrease outlet pressure turn the regulator ad just screw counterclockwise c Adju...

Page 20: ...YHALT Kit High Altitude Accessory Kit listed in PRODUCT DATA Installation of this furnace at altitudes above 2 000 ft 610m shall be in accordance with the local codes or in the absence of local codes...

Page 21: ...W1 thermostat contacts close signaling the control module to run its self check routine After the control mod ule has verified that the 1st stage pressure switch contacts are open and the limit switch...

Page 22: ...g shutdown when the door is removed Operation with the door removed or ajar can permit the escape of dangerous fumes All panels must be securely closed at all times for safe operation of the furnace N...

Page 23: ...trol module has shut the system down and gone into lockout the system must be manually reset before the unit will restart To reset turn the system power off then on then off and then on again within 3...

Page 24: ...stuck closed 3 1st stage pressure switch is open not closing 4 Open thermal limit or open rollout 5 Open low voltage fuse 6 1st stage pressure switch opened 5 times within one cycle 1 hour lockout 7...

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