General; Front; Installation − Setting Equipment - Lennox G71MPP Installation Instructions Manual

General

WARNING
Product contains fiberglass wool.
Disturbing the insulation in this product during
installation, maintenance, or repair will expose you
to fiberglass wool. Breathing this may cause lung
cancer. (Fiberglass wool is known to the State of Cal-
ifornia to cause cancer.)
Fiberglass wool may also cause respiratory, skin,
and eye irritation.
To reduce exposure to this substance or for further
information, consult material safety data sheets
available from address shown below, or contact your
supervisor.
Lennox Industries Inc.
P.O. Box 799900
Dallas, TX 75379−9900
CAUTION
G71MPP unit should not be installed in areas normal-
ly subject to freezing temperatures.
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.
UPFLOW APPLICATION
AIR FLOW
FRONT VIEW
UNIT

FRONT

AIR FLOW
SIDE VIEW
SETTING EQUIPMENT
UNIT MUST BE LEVEL SIDE−TO−SIDE IN ALL APPLICATIONS.
HORIZONTAL APPLICATION
FRONT VIEW
UNIT
FRONT
END VIEW
1/2"
max.
UNIT MAY BE TILTED SLIGHTLY (MAX. 1/2") FROM BACK TO FRONT
TO AID IN THE DRAINING OF THE HEAT EXCHANGER.
FIGURE 3
In addition to the requirements outlined previously, the fol-
lowing general recommendations must be considered
when installing a G71MPP furnace:
• Place the furnace as close to the center of the air dis-
tribution system as possible. The furnace should also be
located close to the chimney or vent termination point.
• When the furnace is installed in an attic or other insu-
lated space, keep insulation away from the furnace.
• When the furnace is installed in an unconditioned
space, consider provisions required to prevent freezing
of condensate drain system.
Installation − Setting Equipment
WARNING
Do not install the furnace on its front or its back. Do
not connect the return air ducts to the back of the fur-
nace. Doing so will adversely affect the operation of
the safety control devices, which could result in per-
sonal injury or death.
Select a location that allows for the required clearances
that are listed on the unit nameplate. Also consider gas
supply connections, electrical supply, vent connection,
condensate trap and drain connections, and installation
and service clearances [24 inches (610 mm) at unit
front]. The unit must be level from side to side. The unit
may be tilted slightly (maximum 1/2 in.) from back to
front to aid in the draining of the heat exchanger. See fig-
ure 3.
AIR FLOW
1/2"
max.
Page 6
DOWNFLOW APPLICATION
AIR FLOW
FRONT VIEW
AIR FLOW
UNIT
FRONT
SIDE VIEW
1/2"
max.