18
fig. 15
VC/VCW 442/2
fig. 16
GW 424/0
4.5 Installing the flue system
At this stage install the flue system
(refer to separate air/flue duct installa-
tion instructions).
4.6 Mounting the boiler
4.6.1 Preparation (fig. 15)
Remove the boiler from the carton.
Lay the boiler on its back and remove
the four plastic sealing caps from
boiler flow and return and domestic
water connections.
On the connection group close the CH
service valves (8), unscrew the union
nuts (6) and remove plastic sealing
plugs.
Close cold mains water service valve,
unscrew union nuts (4), remove and
discard plastic sealing plug. (Take
care not to lose sealing washers!)
Slide the 22 mm nuts (6) and olives
(5) over the flow and return tails of the
boiler as far as possible. Fix these
temporarily in this position using tape
or similar.
4.6.2 Fitting the boiler (fig. 16)
Lift the boiler up to the wall so that it is
slightly above the connection group.
Lower the boiler slowly onto the
connection group so that:
•
the flow and return tails of the boi-
ler engage into the top of the CH
service valves
AND
•
the cross member at the top rear of
the boiler slots into the hanging
bracket.
Remove the tape (or similar) used to
secure the nuts and olives on the flow
and return tails, slide these down onto
the CH service valves and tighten.
Align the cold and hot water connec-
tions with the boiler, fit the sealing
washers and tighten. (If necessary
adjust the position of the hot and
cold water connection pipes by loose-
ning the locking nuts on the connec-
tion group).
