Technical data

4.3 PREPARE THE WALL - Figs. 9, 10

1. Decide upon the position of the boiler taking into

account the clearances required for servicing and

the flue terminal position.

2. Tape the template to the wall (ensure it is level and

the right way up) and mark the position of the holes

for the boiler mounting bracket and bottom fixings. If

rear exit flue is used, mark the position of the hole

for the flue.

3. Side exit flue - Continue the horizontal centre line of

the flue across the wall to the side wall, then along the

side wall 215 mm (ensure the lines are horizontal). This

will give the position of the centre of the hole for the flue.

4. Cut the 110 mm diameter hole (or use a 107 mm

core drill) in the wall for the flue.

Note: For internal fitting of the flue, using the flue

sealing collar supplied, cut a 127 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.

Alpha C23/27 - Installation

Fig. 10

Fig. 9

4.4 FIT THE BOILER - Refer to Fig. 10

1. Lift the boiler and locate it on the mounting bracket.

2. Fit the bottom screws to secure the boiler in position.

4.5 CONNECT THE PIPEWORK - Fig. 11

1. Thoroughly flush out all the water pipework.

2. The valves/fittings have been factory fitted, however, check that all the connections underneath the boiler have been

tightened, especially the union bends.

To gain access to all the connections, remove the bottom tray by removing the four fixing screws. When all the

connections have been checked for soundness replace the tray and secure with the four screws previously removed.

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.

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. 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.