Intertherm M1B Series, Installation Instructions Manual

Page: 5 / 36

5
GEnERal InFoRMatIon
cautIon:
• Do not alter or modify this furnace or any of
its components.
• never attempt to repair damaged or inoperable
components. this may cause unsafe operation,
explosion, fire and/or asphyxiation.
• If furnace malfunctions or does not operate
properly, contact a qualified service agency
or gas utility for assistance.
Manufacturer Warranty
(owner’s Responsibilities)
A warranty certificate with full details is included with these
instructions. Carefully review these responsibilities with
your manufactured housing dealer, service company or
gas supplier. It is the sole responsibility of the homeowner
to make certain the gas furnace has been correctly set up
and converted to the proper fuel (L.P. gas or Natural gas)
and adjusted to operate properly. All gas furnaces are
manufactured for Natural gas and must be field converted
when using L.P. gas.
The manufacturer will not be responsible for any costs
found necessary to correct problems due to improper
setup, improper installation, furnace adjustments, improper
operating procedure on the part of the user, etc. Some
specific examples of service calls which cannot be included
in warranty payments are:
• Converting the furnace to use another type of gas.
• Repairing duct work in the home found to be faulty.
• Correcting wiring problems in the electrical circuit
supplying the furnace.
• Resetting circuit breakers, blown fuses or other switches.
• Correcting problems due to improper gas supply
pressure to the furnace.
• Providing instructional training on how to light and
operate the furnace.
• Furnace problems caused by installation of an air
conditioner, heat pump or other air comfort devices.
• Adding a Roof Jack extension because of unusual wind
and/or snow conditions.
• Revising installation of the furnace flue assembly (Roof
Jack).
• Adjusting or calibrating of thermostat.
• Any construction debris which falls into flue system.
Minimum Clearances
This heating appliance must be installed with clearances
not less than the minimums listed in Table 1, (page 6) .
This furnace must be installed with ample clearance for
easy access to the air filter, blower assembly, burner
assembly, controls, and vent connections. See
Figure 1 ,
Figure 2 , and Figure 3 (page 6) .
• The dimensions of the room or alcove must be able to
accommodate the overall size of the furnace and the
installation clearances listed in Table 1 and in Figure 4
(page 6) .
• Alcove installations: minimum 18” clearance at front
of furnace shall be provided for future servicing. A
removable access panel should be installed between
top of the furnace door frame and the ceiling.
• Closet installations must use a louvered door having
a minimum free area of 235 in
2
when located 6” from
furnace or 390 in
2
for 5 ton ready M1/M5 furnaces. For
special clearance between 1” - 6”, requirements are a
louvered door with a minimum of 250 in
2
free area, with
the openings in the closet door in line with the louvered
openings in the furnace door. A fully louvered closet
door may be used. See Circulating Air Requirements
on
page 7 .
• The furnace must be kept free and clear of insulating
material. Examine the furnace area when the furnace is
installed or when insulation is added. Insulating material
may be combustible.
applications
M1 Series gas and M5 Series oil furnaces are listed direct
vent (sealed combustion), downflow heating appliances for
manufactured (mobile) homes, recreational vehicles, and
for use in residential/modular/commercial construction.
The furnace must be located so that venting can be
properly achieved.
Air conditioning may be added to structures with M1/M5
series furnaces using air conditioning or conventional
units. This Installation Instruction manual includes
special requirements for incorporation of air conditioning
equipment to the M1/M5 series of furnaces. See Table
12, (page 32) .
Multi-speed blower assemblies shown in Table 2, (page
6) , have been certified for field installation in M1/M5
Series furnaces.
unit location
• The furnace shall be appropriately located to the supply
and return air distribution system ( page 7 ). Sides and
back of the furnace may be enclosed by wall framing.
See
Minimum Clearances and Figure 1 , Figure 2 , and
Figure 3 (page 6) .
• The furnace installation is only intended for free air return
through the furnace door louvers. DO NOT connect a
ducted return air system directly to the furnace. Improper
installation may create a hazard and damage equipment,
as well as void all warranties.
• Furnace may be installed on combustible flooring when
using manufacturer approved duct connectors. See
pages 8 - 10 .
• When installed in a residential garage, the furnace must
be positioned so the burners and the source of the
ignition are located no less than 18 inches above the
floor and protected from physical damage by vehicles.