Component Checks & Adjustment Procedures - Raypak B0507 Owner's Manual And Installation Instructions

COMPONENT CHECKS & ADJUSTMENT PROCEDURES
GAS INLET PRESSURE CHECK
IMPORTANT – Check the gas supply pressure at the inlet to the water heater with the water heater and all other
gas burning appliances in the premises operating (burners alight). The minimum gas supply pressures are:

Natural Gas - 1.13 kPa
If this minimum cannot be achieved, it may indicate the meter or the gas line to the water heater is undersized. It is
important to ensure that an adequate gas supply pressure is available to the water heater when all gas burning
appliances on the same gas supply are operating.
The maximum static supply pressure at lock up MUST NOT exceed 4kPa.
PILOT GAS PRESSURE ADJUSTMENT
All models are fitted with an RV20LM pilot regulator. The pilot gas pressure is set by
adjusting the RV20LM pilot regulator as follows:
1. Turn off water heater.
2. Remove pilot solenoid gas test point cover, unscrew gas test point screw and fit
manometer to gas test point.
3. Remove RV20LM regulator gas pressure adjustment screw cap.
4. Turn on water heater and allow pilot to light.
5. Adjust pilot gas pressure to 0.92 kPa for natural gas or 2.75 kPa for propane. To
increase pilot gas pressure, rotate the adjusting screw clockwise or to decrease
pilot gas pressure rotate the adjusting screw anticlockwise.
6. Turn off water heater, refit RV20LM adjustment screw cap, remove manometer,
refit pilot solenoid gas test point screw and refit pilot solenoid gas test point cover.
BURNER GAS PRESSURE ADJUSTMENT
On/Off Models Natural Gas 507-992 & Propane 507-1922
On/Off type water heaters models 507-992 (natural gas) and models
507-1922 (propane gas) are fitted with a Brahma GVC30 double block
gas valve and a Jeavons J48 appliance regulator. The burner gas
pressure for these models is set by adjusting the Jeavons J48
appliance regulator as follows:
1. Turn off water heater.
2. Remove main burner gas test point screw and fit manometer to
gas test point.
3. Remove J48 regulator pressure adjustment screw cap.
4. Turn on water heater and allow main burner to light.
5. Adjust burner pressure to that indicated on the rating label. To increase burner gas pressure rotate the
adjusting screw clockwise or to decrease burner gas pressure rotate the adjusting screw anticlockwise.
6. Turn off water heater, refit adjustment screw cover, remove manometer and refit gas test point screw.
On/Off Models Natural Gas 1142-4224 & Propane 2004-4224
On/Off type water heaters models 1142-4224 (natural gas) and 2004-
4224 (propane gas) are fitted with a Siemens VGD series double block
gas valve that has Siemens SKP15 and SKP25 actuators (SKP25.003).
The burner gas pressure for these models is set by adjusting the
SKP25 actuator as follows:
1. Turn off water heater.
2. Remove main burner gas test point screw and fit manometer to
gas test point.
3. Remove SKP25 pressure adjustment screw cap.

Propane - 2.75 kPa
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