Trane DD1D120A9H51B Benutzerhandbuch

© 2008 Trane           All Rights Reserved

18-CD21D1-5

The following safety practices and precautions must be
followed during the installation, servicing, and opera-
tion of this furnace.

1. Use only with the type of gas approved for this fur-

nace. Refer to the furnace rating plate.

2. Install this furnace only in a location and position as

specified in “Location and Clearances” (page 4), of
these instructions.

3. Provide adequate combustion and ventilation air to

the furnace space as specified in “Air for Combus-
tion and Ventilation” (pages 8-9), of these instruc-
tions.

4. Combustion products must be discharged outdoors.

Connect this furnace to an approved vent system
only, as specified in the “Venting” section (pages 13-
15), of these instructions.

5. Never test for gas leaks with an open flame.  Use a

commercially available soap solution made specifi-
cally for the detection of leaks to check all connec-
tions, as specified in “Gas Piping” (page 618), of
these instructions.

6. Always install the furnace to operate within the

furnace’s intended temperature-rise range with a
duct system which has an external static pressure
within the allowable range, as specified on the unit
rating plate. Airflow with temperature rise for cfm
versus static is shown in the Service Facts accom-
panying this furnace.

7. When a furnace is installed so that supply ducts

carry air circulated by the furnace to areas outside
the space containing the furnace, the return air
shall also be handled by a duct(s) sealed to the fur-
nace casing and terminating outside the space con-
taining the furnace.

8. A gas-fired furnace for installation in a residential

garage must be installed as specified in “Location
and Clearances” section (page 4), of these instruc-
tions.

9. The furnace may be used for temporary heating of

buildings or structures under construction only
when the  following conditions have been met:
a. The furnace venting system must be complete

and installed per manufacturer’s instructions.

b. The furnace is controlled only by a room thermo-

stat (no field jumpers).

c. The furnace return air duct must be complete and

sealed to the furnace and clean air filters are in
place.

d. The furnace input rate and temperature rise

must be verified to be within nameplate mark-
ing.

e. 100% of the furnace combustion air requirement

must come from outside the structure.

CARBON MONOXIDE POISONING HAZARD
Failure to follow the steps outlined below for each 
appliance connected to the venting system being 
placed into operation could result in carbon monoxide 
poisoning or death.
The following steps shall be followed for each appliance 
connected to the venting system being placed into 
operation, while all other appliances connected to the 
venting system are not in operation:
1. Seal any unused openings in the venting system.
2. Inspect the venting system for proper size and horizontal 

pitch, as required in the National Fuel Gas Code, 
ANSI 

Z223.1/NFPA 54 or the CAN/CGA B149 

Installation Codes and these instructions.  Determine 
that there is no blockage or restriction, leakage, 
corrosion and other deficiencies which could cause an 
unsafe condition.

3. As far as practical, close all building doors and windows 

and all doors between the space in which the 
appliance(s) connected to the venting system are 
located and other deficiencies which could cause an 
unsafe condition.

 

4. Close fireplace dampers.

5. Turn on clothes dryers and any appliance not connected 

to the venting system. Turn on any exhaust fans, such 
as range hoods and bathroom exhausts, so they are 
operating at maximum speed.  Do not operate a summer 
exhaust fan.

6.

 

Follow the lighting instructions. Place the appliance be-
ing inspected into operation. Adjust the thermostat so 
appliance is operating continuously.

7. If improper venting is observed during any of the above 

tests, the venting system must be corrected in 
accordance with the National Fuel Gas Code, 
ANSI 

Z221.1/NFPA 

54 and/or CAN/CGA B149 

Installation Codes.

8.

 

After it has been determined that each appliance 

connected to the venting system properly vents where 
tested as outlined above, return doors, windows, exhaust 
fans, fireplace dampers and any other gas -fired burning 
appliance to their previous conditions of use.

▲

f. The furnace return air temperature range is be-

tween 55 and 80 degrees Fahrenheit.

g. Clean the furnace, duct work, and components

upon substantial completion of the construction
process, and verify furnace operating conditions
including ignition, input rate, temperature rise
and venting, according to the manufacturer’s in-
structions.

10. This product must be gas piped by a Licensed

Plumber or Gas Fitter in the Commonwealth of
Massachusetts.