Rinnai RHFE-201FA User manual

1 TB-21
Proper operation of the Rinnai RHFE-263FA at high altitude may require changing the manifold pressure
settings. Refer to Table 1 (Natural Gas) or Table 2 (Propane Gas). If the manifold pressures required
for the installation elevation are different than the factory setting then follow the procedure below.
The RHFE-201FA natural and propane gas units can operate up to 10,000 ft (3048 m) without any
adjustment. Confirm the pressure settings during installation using Table 3 (Natural Gas) or Table 4
(Propane Gas).
Changing Manifold Pressure Settings
1. Turn off the gas and the power supply.
2. Remove the screws that hold the front panel.
Pull the panel out at the bottom and lift up
over the clips that hold it at the top.
3. Remove the bottom cover by holding both
ends and pulling toward you.
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 on the LED display
using ▲and ▼buttons:
High altitude is above 2000 ft (610 m).
L1: Propane gas at low (sea level) altitude
L2: Propane gas unit at high altitude
A1: Natural gas at low (sea level) altitude
A2: Natural gas unit at high altitude
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”.
Test
points
SW1
RHFE-201FA and RHFE-263FA
Installation at High Altitude
TECHNICAL BULLETIN 21
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.
CAUTION

2 TB-21
RHFE-201FA and RHFE-263FA Installation at High Altitude
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.
The LED display turns blank and the unit
returns to the normal off mode. You are now
ready to program in your correct low fire and
high fire gas pressure setting. Follow the
procedure below for setting the manifold gas
pressure. Do not adjust gas pressure on this
appliance using the screw on top of the gas
valve.
11. Press the ON/OFF button to operate the
appliance.
12. Press the SW1 switch. The LED will display
“78” or “7” followed by a symbol.
13. Press the SW1 switch again to change to the
low pressure mode. The LED will display
“PL”.
14. Compare the pressure reading on the
manometer to the correct table for your unit
and gas type. If necessary adjust the low fire
pressure using the ▲and ▼buttons.
15. Press the Economy button. The LED will
display “18” indicating that the low pressure
has been recorded into memory.
16. Press the SW1 switch TWICE. This puts the
appliance into the high fire mode. The LED
will display “PH”.
17. Compare the pressure reading on the
manometer to the correct table for your unit
and gas type. If necessary adjust the high
fire pressure using the ▲and ▼buttons.
18. Press the Economy button to enter the high
fire pressure into memory. The LED display
will display “78”. If the LED shows any thing
other than “78” call Rinnai Technical Support
at 1-800-621-9419 for assistance.
Altitude High Fire Low Fire
Less than 2000 ft
(610 m) 2.30 in * (58 mm) 0.6 in * (15 mm)
2000 - 10,000 ft
(610 - 3048 m) 1.70 in (43 mm) 0.6 in (15 mm)
* Factory Setting
Table 1 RHFE-263FA Pressure Setting (W.C.)
using Natural Gas (W.C.)
Altitude High Fire Low Fire
Less than 2000 ft
(610 m) 3.70 in * (94 mm) 1.1 in * (28 mm)
2000 - 10,000 ft
(610 - 3048 m) 2.70 in (69 mm) 1.1 in (28 mm)
* Factory Setting
Table 2 RHFE-263FA Pressure Setting (W.C.)
using Propane Gas
Altitude High Fire Low Fire
Less than 10,000 ft
(3048 m) 6.0 in * (152 mm) 0.9 in * (23 mm)
* Factory Setting
Table 4 RHFE-201FA Pressure Setting (W.C.)
using Propane Gas
Altitude High Fire Low Fire
Less than 10,000 ft
(3048 m) 3.30 in * (84 mm) 0.6 in * (15 mm)
* Factory Setting
Table 3 RHFE-201FA Pressure Setting (W.C.)
using Natural Gas
Do not touch the areas at or near the heat
exchanger or burner. These areas become very
hot and could cause burns.
CAUTION
19. Press the ON/OFF button again. The LED
display turns blank and the appliance returns
to the normal OFF mode.
20. Remove manometer and install Allen head
screws. Operate the unit and check for gas
leaks at the test points.
21. Install front panel and bottom cover.