Procom Blue Flame Manual page 16

Apply pipe joint sealant lightly to male threads. This will prevent excess sealant
from going into pipe. Excess sealant in pipe could result in clogged heater valves.
The installer must supply an external regulator. The external regulator will reduce
incoming gas pressure. You must reduce incoming gas pressure to between 11 and
14 inches of water. If you do not reduce incoming gas pressure, heater regulator
damage could occur. Install external regulator with the vent pointing down as shown
in Figure 12. Pointing the vent down protects it from freezing rain or sleet.
Install sediment trap in supply line as shown in Figure 11. Place sediment trap
where it is within reach for cleaning. Place sediment trap where trapped matter is
not likely to freeze. A sediment trap traps moisture and contaminants. This keeps
them from going into heater controls. If sediment trap is not installed or is installed
wrong, heater may not run properly.
INSTALLATION
Continued
CAUTION: Two gas line installations at the same time are prohibited. The access plate to the simple switching means
shall not be opened while the heater is in operation.
This appliance can be used with propane or natural gas. It is shipped from the factory adjusted for use with propane.
Only a qualified installer or service technician can perform gas selection and connecting to gas supply.
CAUTION: To avoid gas leakage at the inlet of regulator, a qualified installer or service technician must use steel
or metal hex plug with sealant.
For changing from propane to natural gas supply:
1. Remove top screw from cover plate, See Figure 13, and rotate to expose fuel selection device.
2. For NATURAL GAS, press knob using a flat screwdriver with a blade with thickness of a quarter and turn knob
clockwise until the knob locks into the NG position (see Figure 14). Fuel selection device must be locked in
the NG position. Do not operate heater between locked positions!
3. Rotate and close cover over fuel selection device and reinstall screw.
4. Remove steel or metal 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 Figure 13, and rotate to expose fuel selection device.
2. For propane gas, press in knob using a flat screwdriver with a blade the thickness of a quarter and turn knob
counterclockwise
locked in the LP position. Do not operate heater between locked positions.
3. Rotate and close cover over fuel selection device and reinstall screw.
4. Remove steel or metal hex plug from liquid propane inlet of regulator and install into NG inlet of regulator; use
thread sealant to assure there are no leaks.
until the knob locks into the LP position, see Figure 15. Fuel selection device must be
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Figure 12 - External Regulator with
Vent Pointing Down