Granby 100 Serie Instructions D'installation page 21

WARNING – BEST PRACTICES FOR OPTIMAL OPERATION
Make sure that the air filter is always clean and in good working condition and not overly obstructed. An
obstructed air filter will result in reduced air flow and higher outlet temperature. Continued operation WITH
THE FILTER CLOGGED will drastically reduce the life of the heating elements.
The unit must be inspected once a year by a qualified technician.
Make sure that you have enough clearance in the front and the rear of the unit for service and maintenance.
Although the unit is approved for zero clearance on these panels, it is definitely NOT a good practice to do it.
3.0 Installation of the furnace
The return air/ inlet connection is made on the rear of the unit and the supply plenum is connected in the front of the
unit. The flanges supplied with the cabinet are 19" X 19" and can accommodate plenums of that size. The cabinet is also
large enough so 20" X 20" supply plenums could be attached directly on the furnace. See Figure 1 for details. The unit is
approved for installation with zero clearance on all parts of the cabinet including the floor (combustible floor) and also
with zero clearance on the walls of the supply plenum. The unit can be installed directly on the floor, on the adjustable
Return Air Plenum
legs (included) or suspended to the ceiling with "plumber" straps. Please see figure 2A, 2B and 2C for the different
installation configurations. Make sure to leave sufficient clearance in the front of the unit for the electrical connections
and electrical service and in the rear of the unit for blower and motor maintenance and service. Please note that the air
filter rack can be installed on the right or left side of the unit in addition to the rear (factory position). To change the
filter rack position, refer to fig. 3.
Supply Air Plenum
Front of furnace
Figure 1
Figure 2B
Figure 2A
Floor (Combustible floor approved)
Installed with the
mounting legs supplied
as standard equipment.
See the mounting
procedure at the end of
this manual
Figure 2C