18
Concord Super Series 4 -
Installation & Servicing
CONNECTING BOILERS TO THE FLUE SYSTEM
Details of the flue design are in Frames 3 and 4. Boiler socket
and flue pipe sizes are indicated by Tables 1 & 2.
WATER CONNECTIONS AND PRESSURES
Refer Installation requirements.
All service pipework linking the flow and return headers must
be adequately supported, so that no strain is imposed upon
them.
Allowance must be made for any additional service pipework
expansion.
Provision is made for draining the boiler by an adaptor on
the model 50V, a tapped flange on models 250/300H and
450/600H, and tappings in the water headers of other models.
Note.
Care should be taken when fitting the adaptor or tapped
flanges to ensure that the drain tapping is at the underside or
lowest point respectively.
Additional drain points may also be required at the lowest
points in the system.
A safety valve MUST be fitted.
The valve should be set at 0.7 bar (10 lb/in
2
) ABOVE the
available static head of water over the boiler, or the design
operating pressure of the system - whichever applies.
If isolating valves are fitted in the flow and return pipes to the
boiler they must NOT isolate the boiler from the open vent
safety valve or cold feed.
The maximum safety valve setting is 0.7 bar (10 lb/in
2
) above
the maximum design operating head, or pressure of the boiler
- 6.0 bar (85 lb/in
2
).
ELECTRICAL CONNECTIONS (Refer Frames 12 &
13)
a. Each module
Undo the two M4 screws on the right hand side of the control
box and swing the front control panel out.
b. 50kw single module boiler only:
Fit the prewired low voltage 10-way plug (supplied in the
hardware pack) into the socket at the top RH corner of Board
No. 28. Note that it will fit only one way round, with the clip to
the outside. Do not change or remove the factory-fitted link
wires. Refer to Page 16, Frame 13 for mains connections
details.
c. All multi-module boilers:
Pass the low voltage 10-way plug through the grommetted
hole in the rear control panel and fasten it to its socket on
Board No 28. Note that it will only fit one way round, with the
clip to the outside. Secure the wires to the 3 cable clips on the
control panel support bracket, ensuring that the wires are not
trapped by the clip. Connect the module mains plug. Repeat
for other modules.
Undo the four M4 screws and lift off the cover over Board No.
30 on the boiler casing right hand side.
Feed the mains incoming wire through the bottom cable
clamp. Connect the live, neutral and earth wires to the
terminal strip at the bottom.
The water flow switch and any other over-riding safety
devices should be wired in series with the isolation mains
supply to the boiler.
Secure the cable using the cable clamp and refit the board
cover.
All boiler sizes
Finally tighten the four brass fixing nuts on each module and
fit the module casings, securing them by the two M6 screws.
ASSEMBLY
Summary of Contents for Concord Super Series 4 100 V
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