Alpha Alpha CD24, Инструкции по установке и обслуживанию

Страница: 20 / 44

20
Alpha CD24/32 - Commissioning
5 COMMISSIONING
When commissioning the boiler, ensure the Benchmark Log Book is completed.
5.1 FILL THE SYSTEM
1. The boiler is fitted with an automatic air vent positioned on the pump (see Fig. 2 or 3). The vent is always open and has no
sealing cap.
2. Open the central heating flow and return valves (slot in-line with valve) (see Fig. 13).
3. Open the fill point valve on the filling loop until water is heard to flow. To aid venting, the boiler drain point (see Fig. 2 or 3)
may be opened until water flows out. Close the drain point as soon as water appears.
4. To remove the air - Vent each radiator in turn, starting with the lowest in the system.
5. 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.
6. Check the operation of the pressure relief valve (see Fig. 2 or 3) 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.
7. Continue to fill the system until the pressure gauge indicates 1.0 bar. Close the fill point valve and check the system for
water soundness, rectifying where necessary. Disconnect the filling loop from the mains supply.
Water may be released from the system by manually operating the drain point (see Fig. 2 or 3) until the system design
pressure is obtained. The system design pressure (cold) should be between 0.75 and 1.25 bar.
Refer to sections 3.7 and 3.8. System volume, Flushing and Filling the system.
8. Open the mains water inlet valve (see Fig. 13). Turn on all hot water taps and allow water to flow until no air is present.
Turn off taps.
9. Ensure that the condensate trap has been filled with water. Refer to section 4.5, paragraph 4.
5.2 BOILER CONTROLS - Fig. 22 or 23
Fig. 22 - Alpha CD24C and CD32C
Fig. 23 - Alpha CD24S
System
Pressure Gauge
Central
Heating Thermostat
Domestic
Hot Water Thermostat
Selector Switch
Clock (if fitted)
0
Indicator
Neons
1
2
3
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
bar
0 4
3
2
1
RESET
A
D
B
C
SELECTOR THERMOSTAT THERMOSTAT
OFF
System
Pressure Gauge
Central
Heating Thermostat
Frost
Thermostat position
Selector Switch
0
Indicator
Neons
1
2
3
1
2
3
4
5
6
7
8
9
bar
0 4
3
2
1
RESET
ON
OFF
FROST
A
D
B
C
SELECTOR THERMOSTAT