2″
(50.8mm)
T 
S
Plenum
H
K R
P
L 
N 
Hole in
Floor
A = 4 1/4” (108mm) Minimum clearance from back of hole to wall or other obstruction.
J | 2″ (50.8mm) |
|
1″ (25.4mm)
M 
A07784
58HDV
A | |
|
A07781
Fig. 47 - Exploded View of Subbase for Furnace Only
21/2″ (63.5mm)
11/2″ (38.1mm)
A09182
Fig. 48 - Exploded View of Base for Downflow Cased Coil
5.Position furnace or coil cabinet and furnace on subbase so it aligns between the locating tabs.
Furnace
Installation of
Combustible
Floor Base
Wood Floor
Plenum
A07783
Fig. 49 - Setting the Subbase
This subbase for combustible floors has been designed so that the height of the subbase raises the downflow coil off the floor to allow easy installation of the condensate drain. See Fig. 50
Fig. 50 - Condensate Line Raised by Base
CHECKS AND ADJUSTMENTS
NOTE: Verify the input rate of the furnace.
!WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death and /or property damage.
Turn OFF gas at shut off before connecting manometer.
Startup
NOTE: Refer to the
!WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury, death, and/or property damage.
If any sparks, odors or unusual noises occur, immediately shut OFF power to the furnace. Check for wiring errors or obstruction to blower.
Gas Supply Pressure
Gas supply pressure should be within minimum and maximum values listed on rating plate. Pressures are usually set by gas suppliers.
Manifold Gas Pressure Adjustments
(High and Low Heat)
NOTE: Make adjustment to manifold pressure with burners operating.
!WARNING
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could result in personal injury, death and /or property damage.
Turn OFF gas at shut off before connecting manometer.
42
