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18-CD19D7-22

3

Installer’s Guide

Installation Instructions

3

General

3

Location and Clearances

3

Outline Drawings

4-5

Upflow Installation

6

Downflow Installation

6

Horizontal Installation

6

Air for Combustion and Ventilation

7

Duct Connections

8

Return Air Filters

9-13

General Venting Instructions

13

Venting into a Masonry Chimney

13

Electrical Connections

14

Field Wiring Diagrams

15

Twinning Connection Diagrams

16

Gas Piping

17

Sequence of Operation

17

Start-up and Adjustment

18

Preliminary Inspections

18

Combustion and Input Check

18

High Altitude Derate

19

Lighting Instructions

20

Control and Safety Switch Adjustment

20

Abnormal Conditions

21

IFC Error Flash Codes

21

Contents

GENERAL

The manufacturer assumes no responsibility for equipment
installed in violation of any code or regulation.

It is recommended that Manual J of the Air Conditioning
Contractors Association (ACCA) or A.R.I. 230 be followed in
estimating heating requirements.  When estimating heating
requirements for installation at Altitudes above 2000 ft.,
remember the gas input must be reduced (See High Altitude
Derate, page 19).

Material in this shipment has been inspected at the
factory and released to the transportation agency
without known damage.  Inspect exterior of carton for
evidence of rough handling in shipment.  Unpack
carefully after moving equipment to approximate
location.  If damage to contents is found, report the
damage immediately to the delivering agency.

Codes and local utility requirements governing the installa-
tion of gas fired equipment, wiring, plumbing, and flue
connections must be adhered to.  In the absence of local codes,
the installation must conform with latest edition of the
National Fuel Gas Code ANSI Z223.1 • National Installation
Code, CAN/CGA B149.1.  The latest code may be obtained
from the American Gas Association Laboratories, 400 N.
Capitol St. NW, Washington D.C.  20001.
1-800-699-9277 or www.aga.org

These furnaces have been classified as Fan Assisted
Combustion system CATEGORY I furnaces as required by
ANSI Z21.47 “latest edition” and CAN/CGA 2.3.  Therefore
they do not require any special provisions for venting
other than what is indicated in these instructions.
(Category I defined on page 13).

These furnaces may be twinned.  They shall have
common returns with equal pressure drops or ducts
with equivalent lengths and sizes.  See Field Wiring
Diagrams for Twinning on page 16 for proper hookup.

CAUTION

!

To prevent shortening its service life, the furnace should
not be used as a “Construction Heater” during the finishing
phases of construction until the requirements listed in item
9, a-g of the safety section of this publication have been
met.   Condensate in the presence of chlorides and fluo-
rides from paint, varnish, stains, adhesives, cleaning
compounds, and cement create a corrosive condition
which may cause rapid deterioration of the heat exchanger.

WARNING

!

These furnaces are not approved or intended for installa-
tion in manufactured (mobile) housing, trailers, or recre-
ational vehicles.  Failure to follow this warning could result
in property damage, personal injury, or death.

CAUTION

!

Do not install the furnace in a corrosive or contaminated
atmosphere.

LOCATION AND CLEARANCES

The location of the furnace is normally selected by the
architect, the builder, or the installer.  However, before the
furnace is moved into place, be sure to consider the follow-
ing requirements:

1. Is the location selected as near the chimney or vent and

as centralized for heat distribution as practical?

2. Do all clearances between the furnace and enclosure

equal or exceed the minimums stated in the Clearance
Table on the Outline Drawings (see pages 4&5).

3. Is there sufficient space for servicing the furnace and

other equipment?  A minimum of 24 inches front accessi-
bility to the furnace must be provided.  Any access door
or panel must permit removal of the largest component.

4. Are there at least 3 inches of clearance between the

furnace combustion air openings in the front panel and
any closed panel or door provided?

5. Are the ventilation and combustion air openings large

enough and will they remain unobstructed?  If outside
air is used, are the openings set above the highest snow
accumulation level?  (See the Air for Combustion and
Ventilation section on pages 7&8.)

6. Allow sufficient height in supply plenum above the

furnace to provide for cooling coil installation, if the
cooling coil is not installed at the time of this furnace
installation.

7. A furnace shall be installed so electrical components are

protected from water.

8. If the furnace is installed in a 

residential garage

, it

must be installed so that the burners, and the ignition
source are located not less than 18 inches above the floor
and the furnace must be located or protected to avoid
physical damage from vehicles.

Summary of Contents for DD1A040A9241A Series

Page 1: ...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 informati...

Page 2: ...g ignition input rate temperature rise and venting according to the manufacturer s instructions 10 This product must be piped by a Licensed Plumber or Gas Fitter in the Commonwealth of Massachusetts S...

Page 3: ...drops or ducts with equivalent lengths and sizes See Field Wiring Diagrams for Twinning on page 16 for proper hookup CAUTION To prevent shortening its service life the furnace should not be used as a...

Page 4: ...4 18 CD19D7 22 Installer s Guide From Dwg 21C341699 Rev 7 UD A 1A OUTLINE DRAWING ALL DIMENSIONS ARE IN INCHES...

Page 5: ...18 CD19D7 22 5 Installer s Guide From Dwg 21C341700 Sh 1 Rev 3 DD A 1A OUTLINE DRAWING ALL DIMENSIONS ARE IN INCHES...

Page 6: ...234567890123456 123456789012345678901234567890121234567890123456 123456789012345678901234567890121234567890123456 123456789012345678901234567890121234567890123456 1234567890123456789012345678901212345...

Page 7: ...FURNACE SHOWN Confined spaces are installations with less than 50 cu ft of space per 1000 BTU hr input from all equipment installed Air for combustion and ventilation requirements can be supplied fro...

Page 8: ...he furnace is located in a 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...

Page 9: ...n Flexible duct connectors are recommended to connect both supply and return air ducts to the furnace If only the front of the furnace is accessible it is recommended that both supply and return air p...

Page 10: ...inserted into the bottom of the furnace The retaining screw pin on each side inserts into engagement holes at the bottom of the furnace cabinet side See Figures 13 14 16 NOTE Remove the bottom front...

Page 11: ...e side of the furnace Confirm that the upper retaining pin screw locks into the engagement hole in the blower deck and the lower pin screw rests against the side of the bottom panel See Figures 14 15...

Page 12: ...1 2 DO NOT CUT CUT ON LINE Airflow Airflow d TABLE 7 CABINET WIDTH FILTER SIZE FILTER BRACKET LOCATION 14 1 2 2 14X20X1 12 7 8 17 1 2 2 16X20X1 14 3 8 21 2 16X20X1 13 1 8 24 1 2 2 16X20X1 11 5 8 Locat...

Page 13: ...ercent NOTE If desired a side wall termination can be accom plished through the use of an add on draft inducer The inducer must be installed according to the inducer manufacturer s instructions Set th...

Page 14: ...before servicing the unit Failure to follow this warning could result in electrical shock personal injury or death D 2 4 X 7 g GAS VENT TERMINATION ROOF PITCH MINIMUM HEIGHT FLAT TO 7 12 OVER 7 12 TO...

Page 15: ...m As with all gas appliances using electrical power this furnace shall be connected into a permanently live electric circuit It is recommended that it be provided with a separate circuit protection de...

Page 16: ...3 Rev 2 TWIN TWIN R1 R1 TWINNING CONNECTION DIAGRAM FOR TWINNING 1 STAGE FURNACES WITH SINGLE WIRE TWINNING FEATURE 1 STAGE HEATING ONLY THERMOSTAT 1 STAGE HEAT ONLY THERMOSTAT WITH FAN SWITCH FURNACE...

Page 17: ...he gas valve for propane is 13 8 W C Mini mum pressure is 11 0 W C All gas fittings must be checked for leaks using a soapy solution before lighting the furnace DO NOT CHECK WITH AN OPEN FLAME The fol...

Page 18: ...em 2 Attach a manifold pressure gauge with flexible tubing to the outlet pressure boss marked OUT P on White Rodgers gas valve model 36G or 36J See Figure 28 for White Rodgers gas valve model 36J See...

Page 19: ...if orifice change is required Furnace input rate and temperature rise should be checked again after changing orifices to confirm the proper rate for the altitude Installations above 4 000 feet may req...

Page 20: ...ty of the unit it must be checked out on initial start up by the installer To check for proper operation of the limit switches set the thermostat to a temperature higher than the indicated temperature...

Page 21: ...ignition is not achieved it will lockout the furnace 3 POWER FAILURE If there is a power failure during a heating cycle the system will restart the ignition sequence automatically when power is resto...

Page 22: ...22 18 CD19D7 22 Installer s Guide NOTES...

Page 23: ...18 CD19D7 22 23 Installer s Guide NOTES...

Page 24: ...distributor P I 08 02 Since the manufacturer has a policy of continuous product and product data improvement it reserves the right to change design and specifications without notice Literature Order N...

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