201Rfa, 263Rfa - Rinnai RHFE-551FA Service Manual

Gas Pressure Setting Procedure
Adjust Gas Pressure Settings
1. Turn off the gas and the power supply.
2. Hold both ends of the bottom cover (undercover
assembly) and pull toward you to remove the
cover. Cover snaps in place.
3. Remove the 7 screws that hold the front panel and
the louver assembly to remove panel from the unit.
Pull the panel out at the bottom about 4 inches
(100 mm) and lift up over clips that hold it in place
at the unit's top.
4. Remove two test point screws (1/8 NPT tap) with
3/16 Allen wrench and attach the manometer to
both test ports. Both ports must be used in order
to measure the differential pressure. Ensure that
the manometer is properly calibrated.
5. Turn on the gas and power supply to the
appliance. With the unit in the Off position, press
the SW1 switch at the top of PC board until it
beeps.
6. Select the correct code for gas type and altitude
using ▲ and ▼ buttons:
L1: Propane gas below 2000 ft (610 m)
L2: Propane gas 2001-5200 ft (610-1585 m)
L3: Propane gas 5201-7700 ft (1585-2347 m)
L4: Propane gas 7701-10200 ft (2348-3109 m)
A1: Natural gas below 2000 ft (610 m)
A2: Natural gas 2001-5200 ft (610-1585 m)
A3: Natural gas 5201-7700 ft (1585-2347 m)
A4: Natural gas 7701-10200 ft (2348-3109 m)
7. Press the SW1 test button to record the gas type
code into memory. The LED will display "F1". If
not shown, use the ▲ and ▼ buttons to obtain
"F1".
8. Press the SW1 switch to enter this code into
memory.
9. The LED will display the temperature scale. Use
the ▲ and ▼ buttons to select the Fahrenheit or
Celsius scale.
10. Press the SW1 switch to enter the temperature
scale into memory.
82 Rinnai Direct Vent Service Manual
CAUTION
Do not touch any other areas on the PC board
besides the "SW" switches while power is supplied
to the appliance. Parts of the PC board are
supplied with 120 volts AC.
Set Temp
RoomTemp
Temp
Control
RHFE-201RFA
RHFE-263RFA
Test
points
SW1
PC Board
Version Label
LED display