7
Make Electrical Connections
IMPORTANT:
■
Electrical wiring, disconnect means and over current
protection are to be supplied by the installer. Refer to the
rating plate for the maximum over current protection,
minimum circuit ampacity and operating voltage. See “Wiring
Diagram”.
■
Install an adequate sized branch circuit disconnect, per the
NEC, within sight of and readily accessible to furnace.
■
The cable or conduit and fittings connected from the
disconnect to the furnace wiring connections shall be rated
for outdoor use.
■
Check the furnace rating plate to determine whether the
system is rated single phase or three phase and follow the
appropriate instructions for connecting the pigtail leads.
■
When bottom entry is used for field supply wires, conduit
must be used to route the supply wires through the bottom
section of the cabinet into the burner and control
compartment. See Bottom Electrical Entry graphic.
■
Plug unused side entry holes with field-supplied plugs to
prevent moisture from entering the unit.
■
Low voltage wiring must be separated from line voltage
wiring.
Line Voltage Connections
1. Disconnect power.
2. Remove the burner access panel.
3. Remove the 3 screws that attach the electrical connection
box cover and remove the box.
4. Route the field supply wires to the electrical connection area,
providing sufficient length to connect to the pigtail leads.
WARNING
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
WARNING
Rating Plate Ampacity
Less than 15
16 - 20
21 - 30
AWG
14
12
10
Electrical Shock Hazard
Electrically ground furnace.
Connect ground wire to ground terminal
marked “GROUND”.
Use copper wire for supply connection.
Correct wire gauge is shown in the chart below.
Failure to follow these instructions can result in
death or electrical shock.
31 - 50
8
Summary of Contents for WPG
Page 14: ...14 Wiring Diagram Single Phase ...
Page 15: ...15 Wiring Diagram Three Phase ...
