Coleman DGAA Installation Manual page 2

129098-UIM-H-1011
SPECIFIC SAFETY
1.
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3.
RULES AND PRECAUTIONS
Only Natural gas or Propane (LP) gas are approved for use with
this furnace. Refer to the furnace rating plate or Section IV of
these instructions.
Install this furnace only in a location and position as specified in
SECTION I of these instructions.
A gas-fired furnace for installation in a residential garage must be
installed as specified in SECTION I of these instructions.
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6.
&WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow the safety warnings exactly could result in serious
injury, death or property damage.
Never test for gas leaks with an open flame. Use a commercially
available soap solution made specifically for detection of leaks to
check all connections. A fire or explosion may result causing prop-
erty damage, personal injury or loss of life.
Test for gas leaks as specified in SECTION IX of these instruc-
tions.
Always install the furnace to operate within the furnace's intended
temperature rise range. Only connect the furnace to a duct system
which has an external static pressure within the allowable range,
as specified on the furnace rating plate.
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 may also be handled by duct(s) sealed to the furnace
casing and terminating outside the space containing the furnace.
The return air duct system is not required by the furnace manufac-
turer provided the combustion air and vent system have been
installed and maintained as a Sealed Combustion Direct Vent Sys-
tem and provided a return air duct system and return air plenum
are not required by state, local, or regional codes.
kWARNING
Improper installation may damage equipment, can create a shock
hazard, and will void the warranty.
The furnace shall be installed so the electrical components are pro-
tected from water.
The furnace is not to be used for temporary heating of buildings or
structures under construction.
Do not test the fuel system at more than 14 inches water column
after furnace has been connected to the fuel line. Such testing may
void the warranty. Any test run above 14 inches water column may
damage the furnace control valve which could cause an explosion,
fire, or asphyxiation.
The following requirements to be met:
a. Clean, outside combustion air is provided to the furnace to
minimize the impact of corrosive adhesives, sealants, and
other construction materials. Drywall dust is a major concern
during construction, which can be pulled into the combustion
air path, leading to plugged heat exchangers, burners, and
inducer assemblies.
b. Filter must be installed in the furnace as specified in the
installation instructions, and must be replaced or thoroughly
cleaned prior to occupancy of the home. Again, drywall dust
is the key issue, as that dust can be pulled into the circulating
blower motor, plugging the motor vents, coating the rotors
and stators, etc. which can lead to a potential fire hazard.
c. The temperature of the return air to the furnace must not be
less than 55° F (13 ° C), with no evening setback or furnace
shutdown, to prevent condensation in the primary heat
exchangers.
d. The air temperature rise must be within the stated rise range
as indicated on the furnace rating plate, and the firing input
rate must be set to the unit nameplate value.
e. The external static pressure of the air distribution system
ductwork must be set for heating operation to be at least 0.10
to 0.20 inches water column, based on the input rate of the
furnace, with the lower value for input rates less than 55,000
btu/hr and the upper value for units with input rates above
100,000 btu/hr.
f. The furnace and ductwork should be thoroughly and com-
pletely cleaned prior to occupancy of the dwelling to insure
the proper operation of the furnace and to avoid potential
health concerns.
7. In Canada refer to the Natural Gas and Propane Installation code,
section on Central Furnaces. When installed in a Manufactured
(Mobile) Home, combustion air shall not be supplied from occu-
pied spaces.
8. The size of the unit should be based on an acceptable heat loss
calculation for the structure. ACCA, Manual J or other approved
methods may be used.
9. Manufactured (Mobile) Home and Modular Home Installation:
This appliance must be installed in a (sealed combustion) configu-
ration using a roof jack vent system. A roof jack is only approved
vent system that can be used to vent this appliance.
10. Modular Home Definition: Factory-built home constructed to the
state, local, or regional code where the house will be located. The
home is transported in one or more modules and joined at the
home site.
11. Manufactured (Mobile) Home Definition: Factory-built home
constructed, transported and installed under the federal building
code administered by the U.S. Department of Housing and Urban
Development (HUD Code), rather than to building codes at their
destination. The house is built, transported and installed on a non-
removable chassis.
SAFETY REQUIREMENTS
Provide clearances from combustible materials as listed under
Furnace Locations and Clearances.
Provide clearances for servicing ensuring that service access is
allowed for both the burners and blower.
• These models are CSA listed and approved for installation into a
Modular Home, Manufactured (Mobile) Home, or Recreational
Vehicles.
• Failure to carefully read and follow all instructions in this
manual can result in furnace malfunction, death, personal
injury and/or property damage.
Furnaces for installation on combustible flooring shall not be
installed directly on carpeting, tile or other combustible material
other than wood flooring.
• Check the rating plate and power supply to be sure that the elec-
trical characteristics match. All models use nominal 115 VAC, 1
Phase, 60-Hertz power supply. DO NOT CONNECT THIS APPLI-
ANCE TO A 50 HZ POWER SUPPLY OR A VOLTAGE ABOVE
130 VOLTS.
Furnace shall be installed so the electrical components are pro-
tected from water.
Installing and servicing heating equipment can be hazardous due
to the electrical components and the gas fired components. Only
trained and qualified personnel should install, repair, or service
gas heating equipment. Untrained service personnel can perform
basic maintenance functions such as cleaning and replacing the
air filters. When working on heating equipment, observe precau-
tions in the manuals and on the labels attached to the unit and
other safety precautions that may apply.
• These instructions cover minimum requirements and conform to
existing national standards and safety codes. In some instances
these instructions exceed certain local codes and ordinances,
especially those who have not kept up with changing Modular
Home and Manufactured (Mobile) Home home construction prac-
tices. These instructions are required as a minimum for a safe
installation.
2 Johnson Controls Unitary Products