Glow-worm Ultrapower sxi Range - Manual (Page 40)

40
12 Commissioning
IMPORTANT: At the time of commissioning, complete all
relevant sections of the Benchmark Checklist located in the
centre pages of this document.
12.1 Preliminaries - All Systems
Do Not operate the boiler without water.
The commissioning should be carried out by a
competent
person approved at the time by the Health and Safety
Executive in accordance with the current issue of BS6798.
Make sure that the system has been thoroughly flushed out with
cold water and that all cleanser if used has been removed.
Isolate the boiler from the mains electrical supply and test for
gas soundness and purge air from the gas supply.
12.2 Filling Domestic Water Circuit
Make sure that the isolation valves are securely tightened. Open
all domestic hot water taps.
Fully open the DHW outlet and DCW inlet valves, see diagram
12.1. Water will now flow through the boiler to the domestic
water tank and to the hot water taps.
Starting at the lowest tap, turn the hot taps off one at a time until
the hot water pipework is purged of air.
Carefully slacken, but DO NOT remove the air vent screw on
the domestic pump to release any trapped air within the boiler,
see diagram 12.2, secure when procedure completed.
NOTE: The water pressure at the vent point is that of the
incoming water main (max 3.5bar due to pressure reducing
valve).
Check for water soundness of the complete domestic water
system.
Diagram 12.1
13445
12.3 Filling the Heating System
Refer to diagrams 12.1, 12.2 and 12.3.
With the boiler in place:
1. Ensure that the filling loop flexible hose is securely
connected to the double check inlet valve.
2. Ensure that the gas service isolation valve is closed.
3. Switch on the power supply to the appliance.
The boiler should be in OFF mode. This is indicated
by the ‘OFF’ symbol on the user interface display. If not,
press the ‘mode’ button repeatedly until the ‘OFF’ symbol
is displayed.
The display will now show a flashing system pressure.
13406
DOMESTIC
PUMP
DOMESTIC
PUMP VENT
Diagram 12.2