20
INSTALLATION
combination boiler -
Installation and Servicing
The safety valve is located at the bottom RHS of the boiler.
The discharge pipe should be positioned so that the discharge of water or steam cannot create a hazard to the occupants of
the premises or damage the electrical components and wiring.
2 7 SAFETY VALVE DRAIN
1.
Extend a gas supply pipe of not less than 15 mm O.D.
copper to the boiler.
A working gas pressure of 20 mbar (8" w.g) should be
available at the boiler inlet, with the boiler firing at full DHW
output.
2 6 GAS CONNECTION
2 8 FILLING
Central Heating
1.
Remove the boiler casing Refer to Frame 11.
2.
Ensure that the CH isolating valves are open.
3.
Fill and vent the system. Check for water soundness.
IMPORTANT - when filling:
a.
The cap on the automatic air vent (refer to Frame 64)
MUST be loose at all times.
When filling, there may be a slight water leak from the vent
therefore electrical connections should be protected.
b.
Bleed any air from the pump and ensure that it is free to
rotate.
i.
Remove the vent plug
ii.
Using a screwdriver, rotate the shaft several times
iii.
Replace the vent plug.
Note
.
Some slight water leakage will occur.
c.
A manual air vent is fitted at the top of the heat
exchanger to facilitate air removal during filling and
initial lighting (see frame 34, page 24)
Domestic Hot Water
1.
Fully open all DHW taps and ensure that water flows freely
from them.
2.
Close all taps except the one furthest from the boiler.
3.
Turn off the DHW tap.
Note.
The domestic hot water flow rate is automatically
regulated to a maximum of 12 l/min (2.6 gpm) for
europa 28
and 10 l/min (2.2 gpm) for
europa 24
.
Gas cock
(shown in the
open position)
GAS IN
1
Automatic
air vent
Ca p
Pump
Rotate the
shaft to free
Vent plug
a
b
c
Manual
air vent
INSTALLATION
