Converting Furnace To Downflow Configuration - Goodman GMN SERIES Installation & Operating Instructions Manual

CONVERTING FURNACE TO DOWNFLOW CONFIGURATION

Step 8
Replace Control Access Panel and reconnect Power Sup-
ply.
Step 1
5
Disconnect the Power Supply
Step 2
Rotate the quarter turn fasteners (items 1, page 7) 90° to
release the Control Access Panel (item 2, page 7).
7
Step 3
8
Relocate Pressure Switch (item 7), from Heat Shield (item
5) to Blower Deck (item 8) for Downflow conversion.
COMBUSTION / VENTILATION AIR SUPPLY
A leading cause of unsatisfactory or dangerous performance
is due to inadequate provisions for combustion and ventila-
tion air. The following (Figure 1 through Figure 3.) outline the
minimum combustion/ventilation air this furnace and any
additional gas fired equipment require when installed in a
confined area. It is important that provisions be made for
adequate combustion and ventilation air (in accordance with
section 5.3, Air for Combustion and Ventilation, of the
National Fuel Gas Code, ANSI Z223.1, or applicable local
building codes). In Canada use the current CAN/CGA-
B149.1 & 2 Gas Installation Codes.
It is important that the following be observed when installing
the combustion/ventilation air supplies for your system.
Fig. 1
Fig. 2 Fig. 3
8