High Altitude Conversion - Whirlpool WPG Installation Instructions Manual

5. For single phase units:
Connect the field supply wires (L1, L2) to the 2 black
pigtail leads using U.L. listed wire nuts.
For three phase units:
Connect the field supply wires (L1, L2, L3) to the 3 black
pigtail leads using U.L. listed wire nuts.
Side Electrical Entry
1
2
3
1. Electrical connection box
2. Line voltage field supply
connections
3. Ground terminal connection
Bottom Electrical Entry
1
2
3
4
5
1. Electrical connection box
2. Line voltage field supply
connections
3. Ground terminal connection
6. Connect ground wire to ground terminal marked "Ground."
7. Replace the electrical connection box and the 3 attachment
screws.
Low Voltage Connections
1. Route the low voltage supply wires to the lower section of
burner and control compartment.
2. Using U.L. listed wire nuts, connect the low voltage supply
wires to the matching colors of the low voltage leads.
3. Replace the burner access panel.
8
4
5
6
4. Line voltage supply conduit
5. Low voltage supply conduit
6. Low voltage connections
6
7
4. Low voltage connections
5. Low voltage supply conduit
6. Field-supplied plugs
7. Line voltage supply conduit
208 Volt Conversion
DANGER
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.
1. Disconnect power.
2. Remove the burner access panel.
3. Remove the 2 screws from the control drawer and slide the
drawer open.
4. Move the black wire lead from the 240 Volt terminal on the
transformer to the 208 Volt terminal (center tap) on the
transformer. See "Wiring Diagram."
5. Slide in the control drawer back into place and replace the 2
screws.
6. Replace the burner access panel.

High Altitude Conversion

(if required)
IMPORTANT:
This furnace is approved for operation at altitudes from 0 to
2,000 ft above sea level without any required modifications.
For installations above 2,000 ft, the furnace input rate is to be
reduced per the requirements of the National Fuel Gas Code
(ANSI Z223.1/NFPA 54, latest edition), at the rate of 4 percent
for each 1,000 ft above sea level. Do not adjust manifold
pressure. An orifice change is required to adjust input rate.
For the correct orifice size, refer to the table following.
At altitudes above 4,500 ft, a High Altitude Kit is required. To
order the correct kit see "Accessories."
This furnace is not recommended for installation above
10,000 ft.
It is recommended that conversion for high altitude be
completed prior to making final gas connections.
Orifice Size Required by Elevation - Natural Gas
Elevation (ft)
Sea Level
2,000
4,000
6,000
7,000
8,000
9,000
10,000
Orifice Size
42
43
44
45
46
47
48
49