Saturn KDB - 251 GOM - Set Offset of the Gas Control Valve

KDB-GOM
Series
- 55 -
Set offset of the gas control valve.
1) Shut off the power.
2) Switch DIP switch #3 on the main controller to ON, It will make the unit run at Min. load (forced Min. combustion
mode).
3) Connect the gas pressure gauge hose to the gas pressure check nipple ("C").
4) Restore the power and supply gas.
Caution!
Check any gas leak with soapy water.
If error code #17 is displayed on the panel of the room controller, check on DIP switch #3 setting.
5) Close all the water inlet valves. Then, set the Min. load gas pressure Refer to
Table 3.
Turn the adjusting screw("D") counterclockwise and
Δ
P will go up, turn clockwise
Δ
P will go down.
※
Check for abnormal combustion noise if this occurs:
Check STEP 4. gas leak and close the water inlet valve again.
Check STEP 2. nozzle holder assembly fitness.
※
Check for abnormal burning noise if this occurs:
Check STEP 4. gas leak and close the water inlet valve again.
Check STEP 2. nozzle holder assembly fitness.
6) After procedure is complete shut off power supply.
7) Set the DIP switch #3 to off, back to normal.
8) Set DIP switch #2 on, it will make the unit run at Max. load (forced Max. combustion mode).
9) Restore the power again and supply the gas.
If error code #17 is displayed on the panel of the room controller, check DIP switch #3 setting.
10) Close all the water inlet valves. Then, set the Max. load gas pressure refer to
Table 3
.
Turn the adjusting screw("A") clockwise and
Δ
P will go up, turn counterclockwise
Δ
P will go down.
※
Check for abnormal combustion noise if this occurs:
Check STEP 4. gas leak and close the water inlet valve again.
Check STEP 2. nozzle holder assembly fitness.
※
Check for abnormal burning noise if this occurs:
Check STEP 4. gas leak and close the water inlet valve again.
Check STEP 2. nozzle holder assembly fitness.
11) After procedure is complete shut off power supply.
12) Set the DIP switch #2 off, back to normal operation mode.
Final check.
Supply power to run the boiler, and check for any abnormal noise or check lamp on the room controller.
When the check lamp is on and an error code is displayed on the room controller panel
, Refer to service
manual.
STEP 4.
STEP 4.STEP 4.
STEP 4.
CAUTION
CAUTIONCAUTION
CAUTION:
::
:
If an abnormal combustion or burning noise is
heard, Check the nozzle holder assembly is correct one for the
boiler & gas and try
STEP 4
STEP 4STEP 4
STEP 4 again
STEP 5.
STEP 5.STEP 5.
STEP 5.