Glow-worm icon 23t, Инструкция для пользователя, по установке и обслуживанию

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Installation instructions
Gas valve setting
All boilers are tested and factory set during manufacture. Should it be necessary to reset a gas
valve, for example after replacement, proceed as follows:
MAX/MIN. DOMESTIC HOT WATER OUTPUT ADJUSTMENT
Check that the Inlet pressure is correct for the type of gas being used.
— Set “Summer/Winter” switch to “Summer” position.
— Open the domestic hot water tap fully, wait for 10 seconds and check gas burner pressure on
test point ‘1’, refer to “Technical data”
To adjust the settings, proceed as follows:
— Verify that the modulation coil is energised
— Remove protection cap (C).
— Set maximum pressure by turning knob (B) with 10 mm span-
ner. Clockwise to increase, anti-clockwise to decrease.
— Remove electrical connector on modulation coil.
— Keeping knob (B) locked, adjust minimum pressure unscrew-
ing screw (A) very slowly, using a 4 mm spanner
— Refit electrical connector and check settings.
— Lock the adjustement device after any setting operation.
Adjustments
SLOW OPENING REGULATION
Should ignition of the burner be noisy, it will be necessary to adjust the slow opening setting of the
gas valve. This adjustment is made on the PCB.
To adjust the slow opening, proceed as follows:
— Switch off the boiler and isolate from the mains supply.
— Remove control housing cover as described previously.
— Remove jumper S1
— Connect a suitable pressure gauge to the gas valve outlet test point ‘I’
— Switch on the boiler and open an hot water tap, the burner will ignite. The gas pressures should
be as follows:
• NATURAL GAS= 3 mbar (30 mm w.g.)
— Turn potentiometer P3 (clockwise to increase pressure and counterclockwise to decrease
pressure) until the required value is obtained.
— Refit jumper S1.
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