IDEAL Concord Super Series 4 50 V, Установка и обслуживание

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29 Concord Super Series 4 -
Installation & Servicing
Re-assembly
Re-assemble the module gas line, burner with spark
electrode, fan and control chassis assembly, and flame
sensing probe in the reverse procedure to that detailed in
‘Preparing the boiler’.
SPECIAL ATTENTION should be made to the following
points:
1. Ensure the gap between the gas distribution star plate
and the gas injector is 6mm - 10mm.
2.
The slots in the gas distribution screen (aluminium
wrapper) MUST BE IN LINE with the outermost points of
the finned tubes.
3. The gas distribution screen MUST BE HELD TIGHTLY
against the finned tubes when the securing screws are
tightened.
4. Replace the burner in the module.
The round cork gasket which seals the fan assembly to the
burner, and also the round gasket complete with ‘U’ shaped
extension, sealing the burner module to the casing, MUST BE
RENEWED.
Module waterway cleaning instructions
WARNING:
Before carrying out any servicing procedure:
1. Isolate the boiler electrical supply.
2. Turn off the gas service taps on the modules being
serviced.
If a result of make-up water entering the system, or for any
other reason, it is considered necessary to remove limescale
from all modules, then this operation may be undertaken
using the cleansers Fernox DS. 3 or Sentinel scale clean
with the boiler disconnected or isolated from the system but
retaining all modules in situ.
Should it be suspected that one or two modules only require
de-scaling individually then these modules may be removed
and cleaned whilst the remaining modules continue to operate
and provide some degree of heat service.
Module blanking plates and blank pipe flanges are available
from Ideal Boilers, for this purpose.
The manufacturer of Fernox DS.3:
Fernox, Cookson Electronics,
Forsyth Road, Sheerwater, Woking,
Surrey, GU21 5RZ
Tel. +44 (0) 01799 550811
and Sentinel Scale Clean:
G E Betz, Sentinel Division,
Foundry Lane, Widnes, Cheshire, WA8 8UD
Tel. +44 (0) 0151 420 9563
Will provide general information and literature on the most
efficient procedure and local stockists.
An inspection of the module waterways may be undertaken
before and after cleaning. The following procedure details the
method of draining down the boiler, removing a module and
dismantling for inspection of the waterways.
Preparing the boiler
1.
Unscrew the two retaining screws from the front of the
orange cover and remove the cover.
2. Withdraw the multi-pin plug from the left-hand side of the
module and switch off the module on/off switch.
3. Unscrew the two M4 screws at the right-hand edge of the
control panel and open the front control panel door - refer
Frame 19.
4. Unplug the low voltage 10-way plug from the top right-
hand corner (viewed from inside) of the circuit board and
withdraw it through the rear control panel.
Note. The captive catch on the side of the 10-way plug
must be un-latched.
5. Unscrew the three cable clips securing the low voltage
harness at the left-hand side of the control panel support
bracket and pull the harness clear.
6. Close the control panel front door and secure with the
two M4 screws.
7.
Isolate the boiler from the flow and return water pipes.
8. Drain the boiler.
9. Uncouple the flanges connecting the modules to the flow
and return headers.
10.
Release the union nuts connecting the gas inlet manifold
to the modules.
11. Remove the fan, burner with ignition electrode and
the flame sensing probe, as described in the Servicing
Instructions.
12. Remove the module gas line as follows:
i. Remove the four M4 x 10mm lg. pozi-screws securing
the injector pipe to the cast iron return pipe.
ii. Remove the nut securing the gas line bracket to its
fixing stud.
13. Withdraw the adjustable control temperature and safety
temperature limiter sensors from their pockets.
14. Unscrew the two M5 x 10mm lg. pozi-screws securing the
control panel support bracket to the angle bracket and
remove the control panel assembly.
15. Unscrew the four M10 nuts securing the module to the
casing and withdraw the module.
16. Unscrew the screws holding the gas distribution screen
over the finned tubes and remove the screen.
17. Remove the twelve 8mm bolts and the centre 8mm bolt
which hold the bottom cover plate in the bottom tube
plate.
The plates can now be separated.
The waterways can now be examined.
If the tubes are scaled or partially blocked, the top cover
plate MUST be removed by unscrewing the twelve 8mm
bolts, disposed around the periphery, and the six 8mm
bolts around the centre.
The water passages in the tube plates and tubes can
now be cleaned, either by replacing the module in the
boiler and cleaning all modules (refer Fernox or Sentinel
literature) or by immersing individual modules in a
solution of DS.3 or Sentinel Scale Clean.
SERVICING AND FAULT FINDING