Nordyne Downflow Direct Vent Forced Air Gas Oil Furnaces SERIES M1B - Manual (Page 5)

5
• American National Standard (ANSI-119.2/
NFPA-501C) for all recreational vehicle
installations.
• CANADA: CAN/CGA-B149.1 and .2–M00
National Standard of Canada. (NSCNGPIC)
GENERAL INFORMATION
M a n u f a c t u r e r W a r r a n t y - O w n e r ’s
Responsibilities
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 fi eld converted when using L.P. gas.
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, ex-
plosion, fi re and/or asphyxiation.
• If furnace malfunctions or does
not operate properly, contact a
qualifi ed service agency or gas
utility for assistance.
A warranty certifi cate with full details is included
with these instructions. However, NORDYNE
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. Carefully review these responsibilities
with your manufactured housing dealer, service
company or gas supplier. Some specifi c 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 fl ue
system.
Minimum Clearances
This heating appliance must be installed with
clearances not less than the minimums listed
in Table 1. This furnace must be installed with
ample clearance for easy access to the air fi lter,
blower assembly, burner assembly, controls, and
vent connections. See Figures 1 - 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 sq. in. when
located 6” from furnace or 390 sq. in. for 5 ton
ready M1/M5 furnaces. For special clearance
between 1” and 6”, requirements are a louvered
door with a minimum of 250 sq. in. 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 (page 7).
Table 1. Minimum Clearances
ALL MODELS CLOSET ALCOVE
Front 6” 18”
Back 0” 0”
Sides 0” 0”
Roof Jack 0” 0”
Top 6” 6”
Top and Sides of Duct 0” 0”
Bottom of Duct
B Cabinet 0” 0”
A Cabinet
(w/ coil box)
0” 0”
A Cabinet
(w/o coil box)
1/4” 1/4”