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ELECTRICAL CONNECTIONS
Before proceeding with the electrical connections, be certain that
the voltage, frequency and phase corresponds to that specified
on the furnace rating plate. For single furnace application, maxi-
mum over-current protection is 15 amperes.
Use a separate fused branch electrical circuit containing a prop-
erly sized fuse or circuit breaker. Run this circuit directly from the
main switch box to an electrical disconnect that is readily accessi-
ble and located near the furnace (as required by code). Connect
from the electrical disconnect to the junction box on the left side
of the furnace, inside the blower compartment. For the proper
connection, refer to the appropriate wiring diagram located on the
inside cover of the furnace control box and in these instructions.
NOTE:
The electrical junction box may be moved to the right side
if necessary. A knockout is provided. Seal the opposite hole with
plug provided.
NOTE:
L1 (hot) and L2 (neutral) polarity must be observed when
making field connections to the furnace. The ignition control may
not sense flame if L1 and L2 are reversed. Make all electrical
connections in accordance with the latest edition of the National
Electrical Code ANSI/NFPA70.
These may be obtained from:
National Fire Protection Association, Inc.
Batterymarch Park
Quincy, MA 02269
REVERSING THE ELECTRICAL
CONNECTION (JUNCTION BOX)
If the line voltage electrical needs to be moved to the opposite
side of the furnace, the following steps should be taken:
1. The furnace must NOT be electrically connected to line volt-
age prior to reversing the electrical connection.
2. Disconnect the wires from the door switch.
3. Remove the junction box from the furnace cabinet wall by re-
moving the two screws that hold it to the cabinet. Leave the
wires connected to the junction box.
4. Remove 7/8” plug from hole opposite j-box location. Drill 2 @
3/16” Ø holes in the jacket.
NOTE:
Dimples/marks are pro-
vided in the sheet metal for correct drilling location.
5. Move the junction box to the opposite side of the cabinet. In-
stall using the two screws removed in step 3 above. Note
that all screws penetrating the junction box must be blunt –
no sharp tipped screws can be used.
6. Replace the plug from the opposite of the furnace (the new j-
box location) to the old j-box location and install qty=2 1/4”
plugs from parts bag in empty screw holes in old location of
j-box into the mounting screw holes in the old junction box lo-
cation.
LOCKING
TABS
ELECTRICAL WIRING
ELECTRICAL WIRING
!
WARNING
THE CABINET MUST HAVE AN UNINTERRUPTED
GROUND ACCORDING TO THE LATEST EDITION OF
THE NATIONAL ELECTRICAL CODE, ANSI/NFPA70
OR LOCAL CODES THAT APPLY. DO NOT USE GAS
PIPING AS AN ELECTRICAL GROUND. A GROUND
SCREW IS PROVIDED IN THE JUNCTION BOX. FAIL-
URE TO DO SO CAN CAUSE ELECTRICAL SHOCK
RESULTING IN PERSONAL INJURY OR DEATH.
!
WARNING
THIS FURNACE IS EQUIPPED WITH A BLOWER
DOOR SAFETY SWITCH. DO NOT DISABLE THIS
SWITCH. FAILURE TO FOLLOW THIS WARNING
CAN RESULT IN ELECTRICAL SHOCK, PERSONAL
INJURY OR DEATH.
FIGURE 22
ST-A1220-05
!
WARNING
TURN OFF ELECTRIC POWER AT FUSE BOX OR
SERVICE PANEL BEFORE MAKING ANY ELECTRI-
CAL CONNECTIONS. FAILURE TO DO SO CAN
CAUSE ELECTRICAL SHOCK RESULTING IN PER-
SONAL INJURY OR DEATH.
Summary of Contents for 801MSP Series
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