20
WITH A RISK OF FIRE OR EXPLOSION. SEE THE FRONT PAGE FOR
STEPS TO BE TAKEN.
DO NOT USE THIS HEATER IF ANY PART HAS BEEN UNDER
WATER. IMMEDIATELY CALL A QUALIFIED SERVICE TECHNICIAN
TO INSPECT THE HEATER AND TO REPLACE ANY PART OF THE
CONTROL SYSTEM AND ANY GAS CONTROL WHICH HAS BEEN
UNDER WATER.
LIGHT THE UNIT IN ACCORDANCE WITH THE OPER ATING
INSTRUCTIONS LABEL ATTACHED TO THE HEATER.
THESE INSTRUCTIONS ARE REPEATED IN THE LIGHTING
AND OPERATING LABEL ILLUSTRATION ON PAGE 20 IN THIS
MANUAL.
ADJUSTMENT PROCEDURE
INITIAL START-UP
Main line gas pressure to the water heater for natural gas should
be between a maximum of 10.5" (2.59Kpa for natural gas) W.C.
(14.0"/3.45Kpa for propane) and a minimum as shown in Table 4: that is,
for Natural Gas 4" (.98Kpa) W.C. and 9.0" (1.97Kpa) for Propane Gas.
The inlet gas pressure must not exceed the maximum value. A service
regulator must be installed within 10' (305 cm) of the unit.
The RUF 199 model incorporates a new gas control, which operates
at 0"W.C. (0kPa) for both natural and propane gas. These models are
configured prior to being shipped from the factory and no adjustments
are necessary prior to startup. The controller monitors the air-flow
and makes adjustments to the fan speed which in effect controls the
amount of gas flow. Therefore, the unit will self-adjust to acquire the
correct amount of input.
Once the unit is installed and filled with water and the inlet pressures
confirmed, simply turn the switch "on" and observe operation. Cycle the
unit "off" and "on" several times to ensure proper operation.
OPERATING INSTRUCTIONS
IMPORTANT
IT IS RECOMMENDED THAT A QUALIFIED SERVICE TECHNICIAN
PERFORM THE INITIAL FIRING OF THE HEATER. AT THIS TIME THE
USER SHOULD ASK THE TECHNICIAN ANY QUESTIONS IN REGARD
TO THE OPERATION AND MAINTENANCE OF THE UNIT.
CAUTION
BEFORE PROCEEDING WITH THE OPERATION OF THE UNIT, MAKE
SURE HEATER AND SYSTEM ARE FILLED WITH WATER AND ALL AIR
IS EXPELLED FROM HEATER AND PIPING.
NEVER OPERATE THE HEATER WITHOUT FIRST BEING CERTAIN IT IS
FILLED WITH WATER AND A TEMPERATURE AND A PRESSURE RELIEF
VALVE IS INSTALLED IN THE RELIEF VALVE OPENING OF THE HEATER.
DO NOT ATTEMPT TO OPERATE HEATER WITH COLD WATER INLET
VALVE CLOSED.
FILLING:
1. Close the heater drain valve.
2. Open a nearby hot water faucet to permit the air in the system
to escape.
3. Fully open the cold water inlet pipe valve allowing the heater and
piping to be filled.
4. Close the hot water faucet as water starts to flow.
5. The heater is ready to be operated.
THE MAIN MANUAL GAS SHUTOFF VALVE MUST HAVE BEEN
CLOSED FOR AT LEAST FIVE (5) MINUTES. THIS WAITING PERIOD
IS AN IMPORTANT SAFETY STEP. ITS PURPOSE IS TO PERMIT
GAS THAT MIGHT HAVE ACCUMULATED IN THE COMBUSTION
CHAMBER TO CLEAR. IF YOU DETECT GAS AT THE END OF
THIS PERIOD, DO NOT PROCEED WITH LIGHTING. RECOGNIZE
THAT GAS ODOR, EVEN IF IT SEEMS WEAK, MAY INDICATE THE
PRESENCE OF ACCUMULATED GAS SOMEPLACE IN THE AREA
