17
Table 8. Thermostat Wire Gauge
To Gas
Supply
Floor
Control
Panel
On-Off-Fan
Switch
Alt. Fuel
Line Entry
Floor Cavity
Figure 26. Typical Gas Piping
to 3-1/2” W.C. by the pressure regulator in the
gas valve. The maximum inlet pressure for the
valve is 13” W.C.
For L.P. gas, pressure to the gas valve must be
more than 11” W.C. but not more than 13” W.C.
Pressure is reduced to 10” W.C. by the pressure
regulator in the gas valve.
CAUTION:
The furnace must be converted by a
qualifi ed technician. Improper con-
version can cause unsafe operation,
explosion, fi re and/or asphyxiation.
Oil Tank and Piping Installation
The following procedures are recommended as
good practice. However, requirements of local
codes and ordinances, H.U.D. Manufactured
Home and Safety Standards or National Fire
Protection Association must be satisfi ed, where
they apply, for an approved installation.
Use a tank capacity suitable for the applica-
tion with a weatherproof, capped fi ll opening
and a shielded vent to let in air as fuel is used.
The tank must be clean inside before fi lling. All
water, rust, sediment and other foreign matter
must be fl ushed out.
A fuel or tank gauge is recommended for easy
checking of the fuel level. Check the gauge
reading with a dipstick.
Locate the storage tank conveniently near the
home. For above ground fuel tank installations,
the tank may rest three to four inches off the
ground. Fuel tanks may also be buried if properly
coated to resist corrosion. For below ground fuel
tank installations, the vertical dimension from the
bottom of the fuel tank to the fuel pump must not
exceed ten feet. Keep the tank fi lled, especially
in the summer to reduce the accumulation of
condensation.
T’STAT
Wire Gauge
Recommended T’STAT Wire
Length (Unit to T’STAT
2-Wire
(Heating)
5-Wire
(Heating/Cooling)
24
55
25
22
90
45
20
140
70
18
225
110
