Glow-worm sxi and Gas Valve - Manual (Page 20)

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22mm
22mm
22mm
A B D C E
F and L
G
P
P
J
K
J
P
P
M
M
M
N
N
G
G
L Sealing washer 12x18x2
A Central heating isolation valve (Flow)
B Domestic hot water isolation valve
C Gas service cock isolation valve
D Domestic cold water inlet
E Central heating isolation valve (Return)
F Safety discharge outlet
G 22mm. inlet pipe fitting
H 15mm. inlet pipe fitting
J Boiler connections
K Gas connection pipe
M Sealing washer 18x23x1.5
N Sealing washer 14x18x1.5
P Sealing washer 16x24x1.5
7.1 System Connection
The system can now be connected without the boiler being
mounted. All water and gas connections are on the fixing jig with
the exception of the condense drain and safety discharge, the
positions of these are shown on the wall template.
The gas supply pipe must be chased into the wall if routed up
the back of the boiler.
A Vertical Piping Kit can be used to route the central heating or
DHW pipes, see section 1.6.
Make connections to fixing jig, gas, water and heating cocks
with the tube assemblies supplied in fixing pack as shown in
diagram 7.1.
7.2 Gas Connection
The gas supply can be connected from below or through the
wall at the rear of the boiler, the position is shown on the wall
template.
Refer also to section 1.2.
Fit the sealing washer into the securing nut and make good the
final connection to the gas service cock on the wall mounting jig,
see diagram 7.1.
Do not subject the gas service cock to heat.
Make sure the on/off lever is accessible.
The whole of the gas installation, including the meter, should be
inspected, tested for soundness and purged in accordance with
the current issue of BS6891 and in IE the current edition of
I.S.813 "Domestic Gas Installations".
7 Gas/Water & Appliance Connection
7.3 Water Connections
Flush out the heating system before connecting to the boiler,
refer to section 4.6.
Make the connections to the heating system by fitting the
sealing washers into the securing nuts and make good the final
connection to the isolating valves on the fixing jig, see diagram
7.1.
Do not subject the isolation valves to heat.
Make sure the drain point is accessible, refer diagram 12.9.
7.4 Appliance Connection
IMPORTANT: With regards to the Manual Handling Operations,
1992 Regulations, the following lift operation exceeds the
recommended weight for a one man lift, refer to manual handling
on page 5.
The appliance will contain a small amount of water, place a
water container beneath the boiler connections before removing
the protective caps.
Lifting the boiler into position, lean the top of the boiler slightly
to the wall and position just above the hanging bracket. Lower
the boiler slowly and engage onto the hanging bracket.
Position gasket/sealing washers supplied in the fittings pack, as
shown in diagram 7.1.
Make good the final connections.
Diagram 7.1
12894
ALL ISOLATION
VALVES ARE SHOWN
IN CLOSED POSITION
NOTE: One additional washer for each size M,N and P, is supplied as a spare.