Benchmark Alpha InTec 24X Installation And Servicing Instructions page 16

4. Cut the 110 mm diameter hole (or use a 107 mm core drill) in the wall for the flu .
Notes: 1. Ensure the hole is horizontal.
2. For internal fitting of the flue, using the flue sealing collar supplied, cut a 130 mm dia. flue hole using a 127 mm
core drill.
5. Drill the fixing holes (10 mm dia.) to accept the No.10 plugs supplied. Using the screws supplied, fit the mounting bracket
or wall jig if used. If applicable drill a 22 mm dia. hole for the pressure relief valve discharge pipe terminal supplied with
the jig.
IMPORTANT: If the wall jig is used, follow the instructions supplied with the Premier Pack to fit the jig
mount the boiler and connect the pipework.
4.4 FIT THE BOILER - Refer to Figs. 11 and 12
Lift the boiler and locate it on the mounting bracket - the boiler should be lifted
by two persons.
Note: When handling or lifting always use safe techniques - keep your back
straight, bend your knees, don't twist - move your feet, avoid bending forwards
and sideways and keep the load as close to your body as possible.
Where possible transport the boiler using a sack truck or other suitable trolley.
Always grip the boiler firmly, and before lifting feel where the weight is concentrated
to establish the centre of gravity, repositioning yourself as necessary.
4.5 CONNECT THE PIPEWORK - Fig. 13
1. Thoroughly flush out all the ater pipework. Refer to Section 3.9.
2. The valves/fittings h ve been factory fitted, h wever, check that all the
connections underneath the boiler have been tightened, especially the
union bends.
Note: If applicable the heating union bends supplied with the wall jig have
been designed to enable the heating pipes to be routed from above and/
or below using the same fitting
Note: When soldering to the boiler union bends, ensure the bends are not connected to the valves, otherwise the
internal seals may be damaged.
3. Connect the system pipework to the boiler. One metre of copper pipe must be fitted to the boiler be ore connecting to
any plastic pipework.
Note: Do not forget that the pressure relief valve discharge pipe must be routed clear of the boiler to a drain in such a
manner that it may be seen, but cannot cause injury to persons or property.
4. Connect the 22 mm condensate trap drain pipe to the condensate discharge pipe using the clip supplied.
Ensure that the condensate discharge pipe is as required in Section 3.10.
Pour at least 0.5 litre of water into the flue duct, as shown in Fig. 12, and check the condensate discharge pipe for soundness.
5. Ensure that all the valves are closed (spindle flats at right angles to valve) and do not turn on the water or gas supplies at
this stage.
Seasonality valve
Filling
loop
Condensate
trap
Condensate
discharge
pipe
20
65 70
C B
A - Heating fl w (22 mm)
B - Hot water outlet (15 mm)
16 Alpha InTec C and X - Installation
Filling loop taps
95 37 58 70 45
D F E A
C models
C - Gas inlet (22 mm)
D - Cold water mains inlet (15 mm)
Fig. 13a - Without wall jig
Condensate discharge pipe
Cold water
inlet filter
Heating return
valve
Heating flow
valve
Heating drain
point
23
20
65 70
C
Pour water into flue duct
Fig. 12 - rear of boiler
Condensate trap
95 37 58 70 45
B D F E A
X models
E - Heating return (22 mm)
F - Pressure relief valve (15 mm)
Location for
wall mounting
bracket on
rear of boiler
Cold water
inlet filter
Heating return
valve
Heating flow
valve
Heating drain
point
23