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9
SYSTEM CONNECTIONS
One flow and return connection should be made to the
rear of the boiler - either on one side or opposite sides.
The distributor tube and gaskets, supplied with the boiler,
must be connected into the pumped return connection.
Refer to Frame 8.
Two thermostat pockets are supplied in the installation
pack. These must be fitted in the 2 top 1/2" BSP tappings
at either side of the rear of the heat exchanger.
10 FLUE CONNECTION
1. Complete the flue connection.
2. The boiler is designed to accept flues to
BS. 835 and should be sealed with an
approved boiler putty.
12
CASING ASSEMBLY
1. Unpack the control box from its carton and release the
temperature sensing probe strapped to the back of the
box.
The boiler casing should now be fitted.
A casing hardware pack contains all the screws required
for assembly.
2. Slide the bottom of the side panels on to the location
buttons on the base tray.
3. Screw the side panel to support angles. Repeat for the
other side.
12
INSTALLATION
Position the overheat thermostat phial into the thermostat
pocket at the opposite side to the flow pipe. The illustrations
below show the rear of the boiler with the flow and relative
overheat thermostat positions.
Ensure that the overheat thermostat phial and control sensor
are correctly secured in the pockets. Refer to Frame 13.
11 GAS CONNECTION
1. Connect the gas
supply to the gas
inlet pipe at the
rear LH side of the
boiler.
2. Table 2 gives
details of the inlet
connection size
and the minimum
working
pressures.
Concord CXA
- Installation and Servicing
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