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Fig. 4.10 RAIN HOOD ASSEMBLY
s Working from either the roof or floor level, which-ever
is the most convenient, pass the complete flue/air
assembly through the pre-drilled hole(s) in the
ceiling(s). Ensure that the inner flue pipe abuts the
distance piece (See Fig. 4.8).
t Securely fix the flue assembly in position using the
wall bracket fitted in Step 4.3. The outer pipe (air pipe)
must be securely bracketed or strapped if in the roof
space (Roof strapping is not supplied).
4.8 Connect the gas and water services (Fig 3.1)
i Gas: 15mm compression,
ii CH flow and return: 22mm compression
iii DHW in and out: 15mm compression,
iv Safety valve. 1 5mm compression.
4.9 Assemble the filling loop system.
(Refer to Fig 4 11 Filling Loop Assembly)
Loosely connect the flow end of the double check
valve (D) to the matching connection of the 'S'
shaped pipe (E)
Loosely connect the wingnut end of the flexible pipe
(C) to the free end of the double check valve (D)
Having rolled the flexible hose (C) about one turn
the connection point on the heating return ball valve
(F) including one of the fibre washers supplied (B)
Connect the free end of the filling loop assembly to the
filling cock (A) including the other fibre washer supplied
(B). Ensure that the assemble filling loop does not
interfere with the operation of the gas cock (G).
Tighten all connections.
4.70 Connect the electrical supply:
i Thread the main input cable through the cable damp.
ii Connect the cables to terminal block as shown in the
functional flow wiring diagram.
4.11 In preparation for Commissioning, close all
appliance service cocks and isolate the electrical supply.
Fig. 4.11
FILLING LOOP ASSEMBLY
5. COMMISSIONING
5.1- GAS INSTALLATION
Inspect the entire gas installation, including the meter,
purge and test for soundness in accordance with
BS6891.
(Open doors and windows when purging. Extinguish
naked flames and do not smoke.)
5.2 ELECTRICAL INSTALLATION
Preliminary electrical system checks to ensure electrical
safety must be carried out by a competent person (earth
continuity, polarity, short circuit, resistance to earth), if a
fault has occurred on the appliance the fault finding
procedure (Section 7) should be followed as specified.
5.3. WATER INSTALLATIONS
Ensure that the systems, old or new. have been
thoroughly flushed and cleaned without the appliance in
circuit
5.3.1 Connect the appliance to the connection plate
already fixed to the wall and assemble the Tighten all
connections & open all valves
Page 18
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