30
Installation and Servicing
SECTION 2 - INSTALLATION
2.16 CONNECTIONS & FILLING
NOTES.
Ensure all boss blanking plugs are removed before connecting hardware. Each valve must be tted to the correct boss as shown
in the picture.
Ensure each union is tted with bre seals provided. Do not subject any of the isolating valves to heat as the seals may
be damaged.
Note that all isolation handles are
shown in the open position.
Yellow
Handle
Black
Handle
Black
Handle
CH Flow
Gas
Supply
CH Return
Safety
Drain
Valve
WATER CONNECTIONS CH
1. Connect the CH ow service valve provided in the hardware
pack to the threaded boss connection provided at the lower
rear of the boiler.
2. Connect the CH return valve.
GAS CONNECTION
IMPORTANT. The gas service cock is sealed with a non-metallic
blue bre washer, which must not be overheated when making
capillary connections. Refer to Section 1.16 for details of the position
of the gas connection.
For additional gas supply information refer to “Gas Supply” on page 12.
SAFETY VALVE DRAIN
The safety valve connection, located at the bottom right-hand side of
the boiler, comprises a 15mm diameter stub pipe.
The Installer to provide a comprssion joint on the end of the stub pipe.
This assists with pipe removal when servicing.
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.
Note. An optional safety valve wall outlet kit is available if required.
FILLING
IMPORTANT - when lling:
A. Ensure the dust cap on air vent
located at the rear of the pump
chamber is slightly unscrewed.
B. When lling, there may be a slight
water leak from the air vent therefore
electrical connections should be
protected.
1. Ensure that the CH isolating
handles are open.
2. Fill and vent the system. Refer to
Section 1.17 for lling and setting
pressure procedure.
3. Check for water
soundness.
Dust Cap
3G9705
Safety Valve
Drain Connection
15mm elbow
or fittings
(not supplied)
Safety Valve
Drain Pipe
INSTALLATION