Intergas Heating Ltd
29
9
COMMISSIONING THE APPLIANCE
At the time of commissioning, complete all relevant sections of the Benchmark
Checklist located in section 16 of this document.
9.1
Filling and venting the appliance and the installation
9.1.1
CH system
CAUTION
When an additive is added to the CH water, ensure it is
suitable for the materials used in the appliance, such as
copper, brass, stainless steel, steel, plastic and rubber.
1.
Connect to 3 amp fused spur.
2.
Connect the appliance to mains.
The appliance may perform a self test:
2
(on service display).
The appliance will then go into wait mode:
-
(on service display).
3.
Connect the filling loop and fill the installation with clean drinking water to a
maximum pressure of 1-2 bar in the case of a cold installation (Indicated on
the temperature display.)
4.
Bleed the appliance with the manual bleed screw (A).
5.
Bleed the air in the installation with the manual bleed screws on the
radiators.
6.
Top up the CH installation if the pressure has dropped too far as a result of
the air bleeding.
7.
Check all couplings for leakage.
8.
Fill the condensate trap with water.
9.1.2
Hot water supply
1.
Open the main tap to pressurise the hot water section.
2.
Vent the exchanger and the pipe system by opening a hot water tap.
3.
Leave the tap open until all air has disappeared from the system.
4.
Check all connections for leaks including internal connections.
9.1.3
Gas supply
1.
Gas supply purged of air via test point D on gas valve (see illustration )
2.
Connect a suitable gauge to test point D .
Static or standing pressure must be 20mBar.
If 20mBar is not obtained
DO NOT proceed with commissioning until
supply is rectified
.
3.
If static pressure is correct fire the boiler and allow to reach working
temperature.
4.
Test working pressure by selecting test program “H”. See section 10.8, High
Setting. Working pressure must be 20 mBar + or- 1 mBar.
If working pressure is less than 19mBar the appliance heat output will be
reduced and correct combustion readings may not be obtained. Do not adjust
the air/gas ratio. Correct gas supply to obtain sufficient working pressure.
Note. The inlet working pressure must be obtained with all other gas appliances
at the property working.