- 127 -
13. Adjustment of maximum manifold setting
a. Open the hot water tap fully and make the maximum fl ow.
b. Press and hold down the Adjusting Button (SW3).
c. While holding the Adjusting Button (SW3); momentarily push the Maximum Button (SW2) on the PCB.
(Note: It becomes to the maximum setting forcibly when the water is fl ow.)
Using the manometer, adjust the maximum manifold pressure to the standard pressure (see table below) plus the
previous recorded maximum fan pressure in step 11. (2) b.
d. Every time you press the Maximum Button (SW2), the displayed value is [UP] or [DOWN]. Adjust the value at the
manometer.
e. After adjusted, release the Maximum Button (SW2) fi rst, then release the Adjusting Button (SW3).
14. Adjustment of slow ignition manifold setting
a. Find DIP1 and change DIP switch #1 setting of DIP1 to ON position. DO NOT alter any other DIP switch.
b. Press the Maximum Button (SW2), then press the Minimum Button (SW1) within 2 seconds and hold down both for
more than 5 seconds. The “P” is displayed on the LED of remote control.
c. With the maximum hot water fl ow (open the hot water tap fully), press the Maximum Button (SW2) and measure and
record the fan pressure for the slow ignition point.
d. Press and hold down the Adjusting Button (SW3) and using the manometer, adjust the slow ignition manifold
pressure to the standard pressure (see table below) plus the previous recorded fan pressure for the slow ignition point
in step 14.b. above.
e. Release the Adjusting Button (SW3).
f. Turn off power at remote control.
g. Changed the DIP switch #1 setting of DIP1 to OFF position. DO NOT alter any other DIP switch.
15. Attach the unit’s front cover.
16. Turn on gas supply
(Note: ensure there are no gas leaks).
Turn on water supply
(Note: ensure there are no water
leaks).
17. Turn on remote control.
18. Check and ensure safe operation and performance of the water heater.
Standard Pressure (inch in w.c.)
PH2-28RDVS
PH2-25RDVS
PH2-20RDVS
L.P.
NAT
L.P.
NAT
L.P.
NAT
Minimum Capacity
0.87/11.0
0.51/7.1
0.87/11.0
0.51/7.1
0.87/11.0 0.51/7.1
Maximum Capacity
3.25/11.0
2.48/7.1
2.80/11.0
2.10/7.1
2.00/11.0 1.50/7.1
Slow Ignition Point
1.85/11.0
0.59/7.1
1.85/11.0
0.59/7.1
1.85/11.0 0.59/7.1
PH2-28ROF
PH2-25ROF
PH2-20ROF
L.P.
NAT
L.P.
NAT
L.P.
NAT
Minimum Capacity
0.91/11.0
0.63/7.1
0.91/11.0 0.63/7.1
0.91/11.0 0.63/7.1
Maximum Capacity
3.35/11.0
3.00/7.1
2.72/11.0 2.52/7.1
1.93/11.0 1.73/7.1
Slow Ignition Point
2.76/11.0
2.05/7.1
2.76/11.0 2.05/7.1
2.76/11.0 2.05/7.1
Summary of Contents for PH2-20R DVSN
Page 158: ... 158 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 159: ... 159 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 160: ... 160 Schematic Disassembly PH2 20RDVS PH2 25RDVS PH2 28RDVS ...
Page 162: ... 162 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 163: ... 163 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 164: ... 164 Schematic Disassembly PH2 20ROF PH2 25ROF PH2 28ROF ...
Page 166: ...Schematic Disassembly PHH 32RDV PHH 25RDV 166 ...
Page 167: ...Schematic Disassembly PHH 32RDV PHH 25RDV 167 ...
Page 169: ... 169 Schematic Disassembly PHH 32ROF PHH 25ROF ...
