E) (d) (a), B) (c), 17 routine cleaning and inspection – Glow-worm 30ci Plus User Manual

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17 Routine Cleaning and Inspection

9797

9799

9800

Diagram 17.3

9533

Diagram 17.4

Note: Isolating cocks water and gas are shown in the: OFF position

Diagram 17.2

11927

(f)

BOILER DRAIN VALVE

11900

(e)

(d)

(a)

HEATING
RETURN

COLD
WATER IN

HEATING
FLOW

DOMESTIC HOT
WATER OUT

GAS SERVICE
COCK

To Drain the Domestic hot water circuit

• Close boiler isolating valve (d).

• Turn on one or more hot water taps.

To Drain the boiler

• Close isolating isolating valves (e) and (a).

• Open the boiler drain valve (f).

(b)

(c)