268882-UIM-A-0407
2
Unitary Products Group
SPECIFIC SAFETY RULES AND PRECAUTIONS
1.
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.
2.
Install this furnace only in a location and position as specified in
SECTION I of these instructions.
3.
A gas-fired furnace for installation in a residential garage must be
installed as specified in SECTION I of these instructions.
4.
Provide adequate combustion and ventilation air to the furnace
space as specified in SECTION VI of these instructions.
5.
Combustion products must be discharged outdoors. Connect this
furnace to an approved vent system only, as specified in SEC-
TION VI of these instructions.
6.
Tests for gas leaks as specified in SECTION IX of these instruc-
tions.
7.
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.
8.
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 Two Pipe Sealed Combustion Air
System and provided a return air duct system and return air ple-
num are not required by state, local, or regional codes.
9.
It is permitted to use the furnace for heating of buildings or struc-
tures under construction. Installation must comply with all manu-
facturer’s installation instructions including:
•
Proper vent installation;
•
Furnace operating under thermostatic control;
•
Return air duct sealed to the furnace;
•
Air filters in place;
•
Set furnace input rate and temperature rise per rating plate
marking;
•
Means for providing outdoor air required for combustion;
•
Return air temperature maintained between 55ºF (13ºC) and
80ºF (27ºC);
•
The
air filter must be replaced
upon substantial completion of
the construction process;
•
Clean 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 instructions.
10. When installed in a Manufactured (Mobile) Home, combustion air
shall not be supplied from occupied spaces.
11.
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.
12. Manufactured (Mobile) Home Installation:
This appliance must
be installed in a two-pipe (sealed combustion) configuration. The
combustion air pipe must terminate in the same atmospheric zone,
external to the building.
13. Modular Home Installations:
This appliance may be installed in the following configurations:
A.
A (two pipe) Sealed Combustion Configuration. This configu-
ration has a combustion air pipe and the vent pipe that termi-
nate in the same atmospheric zone, external to the building,
Refer to Figure 18 for combustion air and vent terminations.
B.
An (one pipe) Ambient Combustion Air Configuration. This
configuration has no combustion air pipe connected to the
burner box and the vent pipe terminate external to the build-
ing. Refer to Figure 17 for vent terminations.
C.
A (one pipe) Ventilated Combustion Air Configuration. This
configuration has the combustion air pipe connected to the
burner box and terminating in an attic or crawl space. The
vent pipe terminates external to the building. The vent pipe
and combustion air pipe will not terminate in the same atmo-
spheric zone. Refer to Figure 24 for combustion air and vent
terminations.
14.
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.
15.
Mobile Home Definition:
Factory-built home constructed, trans-
ported 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 home
is built, transported, installed on a non-removable chassis.
SAFETY REQUIREMENTS
•
A manufactured (mobile) home installation must conform with
Manufactured Home Construction and Safety Standard, Title 24
CFR, Part 3280, or when auch standard is not applicable, the
standard for Manufactured Home Installations (Manufactured
Home Sites, Communities, and Set-ups) ANSI/NCS A225.1, and
/or the Canadian Standard for CAN/CSA Z240 MH, Series M92
Mobile Homes. Furnaces have been certified to the latest edition
of standard ANSI Z21-47 • CSA 2.3.
•
Refer to the unit rating plate for the furnace model number, and
then see the dimensions page of this instruction for return air ple-
num dimensions in Figure 5. The duct transition or the plenum
must be installed according to the instructions.
•
Provide clearances from combustible materials as listed under
Clearances to Combustibles.
•
Provide clearances for servicing ensuring that service access is
allowed for both the burners and blower.
•
These models
ARE
CSA listed or approved for installation into a
Modular Home
or a
Manufactured (Mobile) Home
.
•
This furnace is not approved for installation in trailers or recre-
ational 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 residential
and modular home construction practices. These instructions are
required as a minimum for a safe installation.
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.
