10.0
COMMISSIONING
10.1
COMMISSIONING THE BOILER
IMPORTANT: The air vent on top of the boiler must be
OPEN when filling the system. Attach a tube to the air vent
to safely collect any excess water (Fig. 38).
Gas Soundness
1. Ensure the gas service cock on the boiler is turned on
(Fig. 40). The entire gas installation must be tested for gas
tightness and purged in accordance with BS6891.
2. Open the service cocks to the mains cold water, CH flow
and CH return supplies.
3. Purge the DHW system by opening a hot tap.
4. Connect the filling loop and fill and vent the CH system.
NOTE: Ensure the boiler is completely vented using the
manual air vent on top of the boiler.
5. Drain, flush and refill the boiler and system in accordance
with BS7593 (Fig. 30).
NOTE: Failure to flush the system and to add inhibitor will
invalidate the appliance warranty.
6. Pressurise the system to 1.5 bar (Fig. 42).
Electrical Safety Checks on the Controls System
and Boiler
7. Carry out earth continuity, resistance to earth, short circuit
and polarity checks using a suitable meter.
8. Switch on the electricity supply to the boiler.
9. Set the DHW temperature control to Max. (Fig. 43) and open
a DHW tap. The display will initially show the target
temperature and then revert back to show the primary water
temperature within the boiler.
10. Set the controls to call for heat. The boiler will now
operate in CH mode. Check the CH system for correct
operation.
11. Replace the outer door and two securing screws.
26
© Dimplex Boilers 2008
0
1
2
bar
3
4
C
Air Vent
Tube
Fig. 39
Fig. 38
Fig. 40
Fig. 41
Fig. 42
Fig. 43
CH Return
CH Flow
Mains Cold
Water Inlet
Gas Inlet
DHW Outlet
Boiler Drain Point
C
1
13
2
14
3
15
4
16
5
17
6
18
7
19
8
20
9
21
10
22
11
23
12
24
0
1
0
1
2
bar
3
4
9.0
INSTALLATION
9.2
FITTING THE BOILER
1. Remove the sealing caps from the boiler connections.
NOTE: A small amount of water may drain from the boiler
once the caps are removed.
2. Check the sealing washers are located correctly in the taps
on the wall jig.
3. Lift the boiler as indicated by the shaded areas. The boiler
should be lifted by TWO PEOPLE. Engage the slots at the top
rear of the boiler on the wall plate (Fig. 31) (see S
Safe Manual
Handling page 6).
4. Ensure the boiler is correctly located on the wall jig and the
connections align. Tighten all the connections.
NOTE: Take care with the Flow Turbine connection as it has
a plastic body.
© Dimplex Boilers 2008
23
9.3
FITTING THE PRESSURE RELIEF DISCHARGE PIPE
1. Remove the two screws securing the front panel to the
underside of the boiler. Rotate the bottom of the panel out
slightly and lift the panel upwards off its retaining studs on top
of the appliance.
2. Determine the route of the discharge pipe.
3. Taking care not to disturb the case sealing grommet, the
pipework must be at least 15mm diameter and run
continuously downwards to a discharge point outside the
building.
4. Complete the discharge pipework and route it to the outside
discharge point.
9.4
CONDENSATE DRAIN
1. Connect the condensate drain to the trap outlet pipe.
Ensure the discharge of condensate complies with any
national or local regulations in force (see British Gas
“Guidance Notes for the Installation of Domestic Gas
Condensing Boilers”).
2. The connection will accept 21.5 - 22mm plastic overflow
pipe which should generally discharge internally into the
household drainage system. If this is not possible, discharge
into an outside drain is acceptable.
Fig. 33
Pressure Relief
Discharge Pipe
Front Panel
Retaining Stud
X 2
X 2
Fig. 31
Fig. 32
48pp MANUAL SPREADS 19/10/10 08:36 Page 23