16
CAUTION: DO NOT install two gas lines at the same time. DO NOT open the cover while the
heater is running.
Heater is pre-set at factory for propane gas; no changes are required for connecting to propane.
Only a qualied installer or service technician can perform gas selection and connecting to gas
supply.
CAUTION: To avoid gas leakage at the inlet of regulator, a qualied installer or service
technician must use hex plug with sealant.
For changing from propane to natural gas supply
1. Remove top screw from cover plate, See Fig. 14, and rotate to expose gas selection valve.
2. For NATURAL GAS, press knob using a at screwdriver with a blade with thickness of a
quarter and turn knob counterclockwise until the knob locks into the NG position (see
Fig.15). Selection valve must be locked in the NG position. Do not operate heater between
locked positions.
3. Rotate and close cover over gas selection valve and reinstall screw.
4. Remove hex plug (with wrench provided) from natural gas inlet of regulator and install into LP
inlet of regulator; use thread sealant to ensure that there are no leaks.
For changing from natural gas supply to propane supply:
1. Remove top screw from cover plate, See Fig. 14, and rotate to expose gas selection valve.
2. For propane gas, press in knob using a at screw driver with a blade the thickness of a quarter
and turn knob clockwise until the knob locks into the LP position, see Fig.16. Selection
valve must be locked in the LP position. Do not operate heater between locked positions.
3. Rotate and close cover over gas selection valve and reinstall screw.
4. Remove hex plug from liquid propane inlet of regulator and install into NG inlet of regulator;
use thread sealant to assure there are no leaks.
CONNECTING TO GAS SUPPLY (CONTINUED)
Fig. 14
Fig. 15
Fig. 16
NATURAL GAS
PROPANE GAS
PLUG
NATURAL GAS
PROPANE GAS
PLUG