Rinnai EX17CT Manuel D'installation Et D'utilisation page 17

Adjust Gas Pressure Settings
1. Turn off the gas and the power supply.
2. Remove the 5 screws that hold the louver assembly and
front panel. Lift the panel straight up and then remove it.
3. Remove two pressure point screws (1/8 NPT tap) with
3/16 Allen wrench and attach the manometer to both
pressure points. Both pressure points must be used in
order to measure the differential pressure. Ensure that the
manometer is properly calibrated.
4. Turn on the gas and power supply to the appliance.
(Press the "Set back" button after turning on the power
supply.) With the unit in the off position, press the test
switch at the top of PC board until it beeps.
5. Select the correct code for gas type and altitude using ▲
and ▼ buttons. Refer to the table below.
6. Press the test switch twice to record the gas type code
into memory. .
7. Press the ON/OFF button to operate the appliance.
8. Press the test switch twice. The LED will display "PL"
indicating low fire mode.
9. Compare the pressure reading on the manometer to the
desired manifold test pressure (low) for your gas type and
altitude. If necessary adjust the low fire pressure using
the ▲ and ▼ buttons.
10. Press the test switch. The LED will display "PH" indicating
high fire mode.
Code
A1 / A5
0-2000 ft
Altitude
0-610 m
EX17CT
Manifold test
0.44 in
pressure -
(11 mm)
W.C. Low
Manifold test
1.6 in
pressure -
(40 mm)
W.C. High
EX22CT
Manifold test
0.44 in
pressure -
(11 mm)
W.C. Low
Manifold test
2.6 in
pressure -
(65 mm)
W.C. High
Natural Gas
A2 / A6 A3 / A7
2001-5200 ft 5201-7700 ft
611-1585 m 1586-2347 m
0.48 in 0.54 in
(12 mm) (14 mm)
1.4 in 1.2 in
(35 mm) (32 mm)
0.48 in 0.54 in
(12 mm) (14 mm)
2.2 in 2.0 in
(57 mm) (52 mm)
Rinnai Corporation EX17CT, EX22CT Manual
Pressure
Point
Test Switch
PC
Board
Nozzle
Manifold
Pressure
Point
A4 /A8 L1 / L5
7701-10200 ft 0-2000 ft
2348-3109 m 0-610 m
0.60 in 0.68 in
(15 mm) (17 mm)
1.1 in 2.7 in
(29 mm) (69 mm)
0.60 in 0.68 in
(15 mm) (17 mm)
4.0 in
1.8 in
(101 mm)
(47 mm)
Propane Gas
L2 / L6 L3 / L7
2001-5200 ft 5201-7700 ft
611-1585 m 1586-2347 m
0.74 in 0.82 in
(19 mm) (21 mm)
2.4 in 2.2 in
(61 mm) (55 mm)
0.74 in 0.82 in
(19 mm) (21 mm)
3.5 in 3.1 in
(89 mm) (80 mm)
L4 / L8
7701-10200 ft
2348-3109 m
0.92 in
(23 mm)
2.0 in
(50 mm)
0.92 in
(23 mm)
2.9 in
(72 mm)
17