Rinnai Energysaver RHFE-1004FTA, Руководство по обслуживанию

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Rinnai Direct Vent Service Manual 75
1. Check gas pressure at manifold, pressure should be:
2. Check air shutters adjustment:
___ RHFE1004FA set for propane should have no notches showing on adjustment rod.
___ RHFE1004FA set for natural: the right rear and left hand shutters should have no notches showing on
adjustment rod; the right front shutter should have 3 notches showing on the rod.
3. Ensure unit has the proper size orifices in it:
___Orifice sizes for the RHFE1004FA/VA on propane should be 0.95 mm (0.037”) on
the back two burners and 1.20 mm (0.047”) on the front right burner.
___Orifices sizes for the RHFE1004FA/VA on natural should be 1.8 mm (0.071”) on the back two burners and
1.95 mm (0.077”) on the right front burner.
5. Inspect wall vent to ensure it is not clogged or restricted in any way. For proper inspection of combustion
chamber air way, vent MUST be removed from wall.
6. Remove all flame rods and electrodes and inspect for cracks and/or carbon buildup. Clean flame rods and
electrode with some type of sandpaper.
7. Check all wire connections for loose or broken pins or connectors. Disconnect electrical power before
performing this task.
8. Check resistance on all three gas valve solenoids. Unplug each coil before checking resistance. Set you meter
on the 2K scale, you should read between 1400 to 1800 ohms for SV1; 1200-1600 ohms for SV2; and 1200-
2000 ohms for SV3. Power unit back up and set your meter to read 100 VDC scale, cycle unit and check
voltage to each coil. You should read 85-90 VDC at each coil. If unit goes to lockout before you have time to
read all coils, you may have to cycle it two or three times.
9. Ensure the air pressure switch is functioning properly. Ohm out the micro-switch located on the pressure
switch. Continuity will be read on meter when closed position.
10. Ensure the vent system does not exceed 13 feet total run, not exceeding 8 feet vertically, with no more than
two bent elbows.
11. Check thermistor operation by inserting meter leads into each end of thermistor plug. Disconnect yellow to
yellow from PCB, set your meter on the 200K scale. Your should be able to apply heat to the thermistor bulb
and see resistances decrease. Place some ice on thermistor bulb and resistances should increase.
12. Check current on all flame rods:
___
FR1 and FR2 are high fire flame rods. The left hand rod (FR1) is a blue wire and the right hand rod
(FR2) is a red wire. Flame current through these rods should range from 4 to 8 micro amps (µ amps)
depending on gas type being used. FR3 fire flame rod is the yellow wire located on the front center of
the unit next to the electrode. Low fire flame current should be 1.2 to 2.0 micro amps (µ amps).
YOU MUST ENSURE UNIT IS GROUNDED !!
RHFE-1004FA
RHFE-1004RFA
RHFE-1004FTA
Lock Out Checklist
Altitude Gas Type
Manifold Differential Pressure
High (in W.C.) Low (in W.C.)
0-2000 ft (0-610 m)
LPG / Propane
10.1 4.3
> 2000 ft (> 610 m) 7.3 4.3
0-2000 ft (0-610 m) 3.7 2.0
> 2000 ft (> 610 m) 2.7 2.0
Natural Gas