Glow-worm Ultracom 2 30cxi - Domestic Hot Water Circuit; 17 Draining; Heating Circuit; Restart - Re-Check Commissioning

Supplied By www.heating spares.co Tel. 0161 620 6677
0020085231_02 - 05/10 - Glow-worm
- 38 -
• Compare the value measured with the values indicated in the
table below.
Gas adjustment
G20 G31
CO2 case ON 9 ± 0.2 % 10.1 ± 0.2 %
CO2 case OFF 9.2 ± 0.3 % 10.3 ± 0.3 %
i
Safe combustion can only be veried by measuring
CO/CO2 ratio. This must not exceed the value
shown in the table under the section "Maximum Rate
and Adjustment".
16.1.3 Restarting
• Replace the cap
• Replace the appliance front panel.
Note: following the replacement of the front panel, the CO2
value will change: you can check that the value "case on" is
correct by the values in the previous table.
1
2
Key
1 Serial number stickers
2 Data label location
• Firmly attach the gas replacement label to the appliance in
the corresponding location (1) on the electrical box.
16.2 Restart - re-check commissioning
• Before putting the appliance into operation, follow the
instructions within the chapter Specic adjustment.
17 Draining
17.1 Heating circuit
B
A
1
2
Key
1 Length of hose (not supplied)
2 Drain valve
• Drain down the heating circuit of the boiler only, by closing
the heating ow and return isolating valves. See chapter
"Hydraulic connection ► Gas and water connections"
• Attach a length of hose (1) to the drain point and open the
drain valve (2).
• After draining, close the drain valve (2) and remove the hose.
17.2 DomesticHotwatercircuit
• Drain the Domestic Hot Water circuit by closing the cold-
water isolation valve on the wall mounting jig.
• Open one or more hot water taps to drain the hot water
circuit.
MAINTENANCE