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Step 10—Electrical Connections
115-V WIRING
Refer to the unit rating plate or Table 6 for equipment electrical
requirements. The control system requires an earth ground for
proper operation.
Do not connect aluminum wire between disconnect switch
and furnace. Use only copper wire.
Make all electrical connections in accordance with the current
edition of the National Electrical Code (NEC) ANSI/NFPA
70-1999, and any local codes or ordinances that might apply. For
Canadian installations, all electrical connections must be made in
accordance with Canadian Electrical Code CSA C22.1, or authori-
ties having jurisdiction.
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control status code indicator light will flash
rapidly and furnace will not operate.
Fig. 10—Horizontal Crawlspace Installation on Hanger Rods
A96633
NOTES:
ANGLE
IRON OR
EQUIVALENT
ROD LOCATION
USING DIMPLE
LOCATORS
(SEE DIMENSIONAL
DWG FOR
LOCATIONS)
3
⁄8-IN. ROD
1. A 1 In. clearance minimum between top of
furnace and combustible material.
2. The entire length of furnace must be
supported when furnace is used in horizontal
position.
3
/8-IN. HEX NUT
& WASHER (4)
REQD PER ROD
(A) PREFERRED ROD LOCATION
(B) ALTERNATE ROD LOCATION
(A)
(B)
(A)
(B)
(B)
(A)
(A)
(B)
→Table 4—Filter Retainer (In.)
FURNACE CASING
WIDTH
FILTER SIZE AND
QUANTITY
D
14-3/16 (2) 16 X 20 X 1 15-3/8
17-1/2 (2) 16 X 20 X 1 14-3/4
21 (2) 16 X 20 X 1 13-3/4
24-1/2 (2) 16 X 20 X 1 12-1/2
Fig. 11—Horizontal Filter Arrangement
A82173
FIELD-SUPPLIED
FILTER RETAINERS
AIRFLOW
D
12
″
4
″
10