J962V Installation Manual
6
CLEARANCES TO COMBUSTIBLE MATERIALS
TOP
FRONT
VENT
BACK
LEFT SIDE
RIGHT SIDE
Left Side ................. 0 Inches
Top ..........................0 Inches
Right Side ............... 0 Inches
Front ........................
†
4 Inches
Vent ........................ 0 Inches Back........................ 0 Inches
†Allow 24 in. minimum clearance for servicing. Recommended clearance
is 36 in.
Figure 1. Minimum Clearances to
Combustible Materials
WARNING:
Do not place combustible material on or against
the furnace cabinet or within 6 inches of the
vent pipe. Do not place combustible materials,
including gasoline or any other flammable vapors
and liquids, in the vicinity of the furnace.
Clearances to Combustible Materials
This furnace is Design Certified in the U.S. and Canada
by CSA International for the minimum clearances to
combustible materials. NOTE: The furnace is listed for
installation on combustible or non-combustible flooring.
However, wood is the only combustible flooring allowed
for installation. Downflow models must use the appropriate
subase kit when installing over a wood floor. To obtain
model number and specific clearance information, refer
to the furnace rating plate, located inside of the furnace
cabinet.
Access for positioning and servicing the unit must be
considered when locating unit. The need to provide
clearance for access to panels or doors may require
clearance distances over and above the requirements.
Allow 24 inches minimum clearance from the front of
the unit. However 36 inches is strongly recommended.
See Figure 1 for minimum clearance requirements.
Operation of Furnace During Construction
CAUTION:
Failure to follow these instructions will void the
factory warranty and may significantly reduce
the life or the performance of the furnace, and/
or result in other unsafe conditions. It is the
responsibility of the installing contractor to insure
these provisions are met.
Operating gas furnaces in construction environments can
cause a variety of problems with the furnace. Proper use
of commercial portable space heating equipment during
construction is recommended. This gas furnace may be
used during construction if it is not in violation of any
applicable codes and the following criteria are met:
• The installation must meet all applicable codes. The
furnace must be permanently installed according to the
instructions supplied with the furnace. This includes the
electrical supply, gas piping, duct work, and venting.
The furnace must be controlled by a room thermostat
properly installed according to the instructions supplied
with the furnace and thermostat. The installation must
include a properly installed air filter in the return air duct,
sealed to the furnace with no by-pass air. The filter must
be inspected frequently and replaced when necessary.
• The furnace input rate and air temperature rise must be
checked and verified to be within the acceptable ranges
as marked on the furnace nameplate.
• Before occupying the structure: The air filter must be
replaced or cleaned, the duct work must be inspected
and cleaned of any construction debris, and the furnace
must be cleaned and/or repaired if found to be dirty,
damaged, or malfunctioning in any way by a qualified
HVAC technician. The furnace shall be inspected and
approved by applicable local authority even if this
requires redundant inspections.
• Serial numbers for furnaces used during construction
must be submitted in writing (fax and email also
acceptable). This information will be used to track the
long-term affects of the use during construction on
furnaces. Proof of this submittal shall be available for
the final inspection of the furnace prior to occupancy.
• This furnace is designed to operate with return air
temperatures in ranges normally found in occupied
residences, including setbacks. Minimum continuous
return temperature must not be below 60° F (15° C).
Occasionally a temporary return temperature of 55° F
(12° C) is acceptable. However, operation with a return
temperature below 55° F (12° C) is not allowed.
• The installing contractor and / or builder must:
— Comply with the requirements of this section.
— Complete the attached Use of Furnace During
Construction checklist.
— Email copy of completed Use of Furnace During
Construction checklist to warranty@nortek.com
— Leave original completed Use of Furnace During
Construction checklist with furnace.
— Disclose use of the furnace during construction to
the homeowner in advance of the sale.










