Start-Upprocedures

ADJUSTMENT KNOB

Fig. # 8069.1

PRESSURE SWITCH ADJUSTMENT RANGE

HEAT EXCHANGER HEIGHT

5' Max

Fig. # 8152.0

BEFORE START-UP

BURNERS

Clean main burners and air louvers of dust, lint and debris. Keep heater area clear and free from com- bustibles, flammable liquids, and chemicals. Do not obstruct the flow of combustion and ventilating air.

WATER

Water must be flowing through the heater.

START-UP

CAUTION: Propane gas is heavier than air and sinks to the ground. Exercise extreme care in lighting heater in confined areas.

LIGHTING INSTRUCTIONS

1.Close all gas valves. Turn off electric power supply wait 5 minutes.

2.Open manual pilot valve. Turn on electric power, pilot is automatically lighted.

3.Open main gas valve.

4.Set temperature controls to desired temperature.

NOTE: If heater is installed outside of the limits shown, a flow switch must be used in place of the pressure switch when mounted and wired adjacent to the heater.

TWO-SPEED PUMPS

In some cases, the flow on the low speed is insuffi- cient to operate the heater. This is apparent when the pressure switch cannot be further adjusted or if the heater makes banging noises. In these cases, the pump must be run at high speed when heating the water.

CAUTION: Do not operate the heater without the function of a properly adjusted pressure switch.

PILOT SAFETY

The heater employs a pilot safety which closes the main gas valve within 8/10ths of a second whenever the pilot flame is interrupted. Pilot flame is automatically lit when the device is powered. Unit performs its own safety check and opens the main valve only after the pilot is proven to be lit.

Fig. #8929.1

TO SHUT DOWN

Close all manual gas valves. Turn off electric power.