Glow-worm Swift flow 120 Installation Instructions Manual page 17

8 G a s
8.1 Gas Connection
The gas supply can be connected from below or through
the wall at the rear of the boiler, see diagram 8.1 for
position.
Refer also to Section 1.7.
Make the gas supply connection to the gas service cock.
Slacken or remove the clip, as desired, whilst making the
connection. Do no subject the gas service cock to heat.
8.2 Water Connections
Provision is made for the water connections to be made
from below or through an internal wall at the rear of the
boiler, see diagram 8.1 for position.
Provision is made for the domestic hot water outlet and
heating flow and return pipes to be connected from
above, if desired, passing down either side of the boiler,
see diagram 8.2 for clearances. Take care that any
pipework connected from above, within the boiler
mounting frame will clear the expansion vessels.
Flush out the domestic hot water and the heating systems
before connecting to the boiler.
Make the connections to the domestic hot water and
heating systems by way of the isolating valves, see
diagram 8.1.
Slacken or remove the clips, as desired, while making
the connections. Do not subject any of the isolating
valves to heat.
Make sure that the drain points on the isolating valves
are positioned towards the front of the boiler, also that
the drain and operating screw heads are accessible.
8.3 Safety Valve Discharge
WARNING. It must not discharge above an entrance or
window or any type of public access area.
A short discharge pipe is supplied loose with the boiler,
which when fitted to the safety valve, will end below the
boiler at the mark between the cold water inlet and the
heating flow, for position and dimension see diagram
8.1.
This must be extended, using not less than 15mm od
pipe, to discharge, in a visible position, outside the
building, facing downward, preferably over a drain.
The pipe must have a continuous fall and be routed to a
position so that any discharge of water, possibly boiling,
or steam cannot create any danger to persons, damage to
property or external electrical components and wiring.
Note. To make future servicing easier it is advisable to
use a compression type fitting to extend the discharge
pipe.
Supplied By www.heating spares.co Tel. 0161 620 6677
a n d W a t e r
DOMESTIC
COLD WATER
SUPPLY IN
20mm
EXPANSION
VESSEL POSITION
140
90
17
C o n n e c t i o n s
'NOTCH' MARKING POSITION OF
SAFETY VALVE DISCHARGE
63
HEATING
FLOW
GAS
SERVICE
COCK
DRAIN
SLOT (CLOSED)
POINT
80
DOMESTIC
WATER
NOTE:
Keep any pipework
clear of shaded area
BOILER
MOUNTING
FRAME
DOMESTIC
HEATING
HOT WATER
RETURN
OUT
SLOT (CLOSED)
Diagram 8.1
46mm
320
CENTRAL
HEATING
Diagram 8.2
220674B