24
Alpha InTec S - Commissioning
5 COMMISSIONING
Fig. 26
When commissioning the boiler, ensure the Benchmark Checklist is completed.
5.1 FILL THE SYSTEM
1. The boiler is fitted with an automatic air ent positioned on the pump (see Fig. 2), ensure that the vent is always open.
2. Open the central heating fl w and return valves (vertical slot in-line with valve) (see Fig. 13).
3. Open the fill point alve on the filling loop until ater is heard to fl w.
4. To remove the air - Vent each radiator in turn, starting with the lowest in the system.
5. Vent air from the primary heat exchanger via the manual vent at the top left hand side (see Fig. 29).
6. It is important that the pump is properly vented to avoid it running dry and damaging its bearings. Unscrew and remove the
cap from the centre of the pump. Using a suitable screwdriver rotate the exposed spindle about half a turn, then replace
the cap.
7. Check the operation of the pressure relief valve (see Fig. 2) by turning the head anti-clockwise until it clicks. The click is
the valve lifting off its seat allowing water to escape from the system - check that this is actually happening.
8. Continue to fill the system until the pressure gauge indicates 1.0 ba . Close the fill point alve and check the system for
water soundness, rectifying where necessary. Disconnect the filling loop from the mains suppl .
Water may be released from the system by manually operating the drain point (see Fig. 2) until the system design
pressure is obtained. The system design pressure (cold) should be between 0.75 and 1.25 bar.
Refer to Sections 3.8 and 3.9. Filling and Flushing the system.
9. Ensure that the condensate trap has been filled with ater. Refer to Section 4.5, paragraph 4.
5.2 BOILER CONTROLS - Fig. 26
5.3 TEST FOR GAS TIGHTNESS AND PURGE THE SUPPLY
1. With the boiler connected, pressure test the gas supply and inlet pipework connected to the boiler for tightness in
accordance with BS 6891.
2. Loosen the gas inlet pressure test point screw on the gas valve (see Fig. 27) and purge in accordance with BS 6891.
3. Retighten the test point screw and test for gas tightness. Close the boiler gas service cock.
1 On-Off/Standby button
2 Summer/Winter button
3 Reset button
4 Information button
5 Domestic hot water temperature selector
switch (Alpha System kit fitted
6 Central heating water temperature
selector switch
7 Heating system pressure gauge
8 DHW mode active (Alpha System kit
fi
tted)
9 Boiler locked does not require reset via
“RESET” button
10 Flame present symbol and relative
power scale
11 Operating in summer mode
12 Operating in winter mode
13 Central heating mode active
14 Temperature indicator, boiler info and
error codes
15 Boiler in Stand-by mode
16 Presence of external connected devices
17 Solar function active
18 Functioning with external temperature
probe active (optional)
19 Boiler connected to remote control
(optional)
20 Not used on this model
21 Optional boiler controls (if fitted
bar
0
4
3
2
2.5
3.5
1.5
0.5
1
CORRECT PRESSURE
WHEN COLD
RESET
INFO
RESET
BOOST
bar
°C
x100rpm
1
2
3
4
5
6
7
21
RESET
BOOST
bar
°C
x100rpm
8
9
10
11
12 13
14
15
16
17
18
19
20
