IDEAL Concord Super Series 4 100 V, Установка и обслуживание

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14 Concord Super Series 4 -
Installation & Servicing
Frame 10 shows how constant and variable temperature
circuits can be used on low and hight head applications. The
following points should be noted:
1. The recommended positions of the cold feed and open
vent are shown. Sizes should comply with BS. 6644. If
isolating valves are to be fitted in the flow and return pipes
of the boiler they must not isolate the boiler from the open
vent, safety valve or cold feed.
2. The minimum tank height shown is measured from
the highest point of the system and must be increased,
if necessary, to comply with pump manufacturer’s
requirements.
3. The open vent height above tank water level cannot be
guaranteed adequate in all circumstances and does not
take into account any instantaneous changes in head
brought about by ancillary equipment operating.
4. Water flow switch is shown in its recommend position.
It MUST NOT be located on the mixing header where
operation of zone pumps can cause reduction in flow.
5. Production of condensate: When operating normally
and the design return temperature has reached 71ºC.,
the boilers produce no condensate. At lower temperature
the amount of condensate increases. It is normal for
condensate to be produced as other boiler heats up from
cold and, provided the time taken for the return to reach
71ºC. is not excessive, no harm will result. If, however
large quantities of condensate are produced for long
periods, this can adversely affect burner performance and
cause the control box to lockout. If the water content of a
system is very large it is advisable to switch on individual
zones from cold, in sequence, with a time delay sufficient
to allow the boiler return temperature to reach 55ºC as
quickly as possible.
6. Water treatment for hot water rand heating boilers.
There is a basic need to treat the water contained in
all heating and indirect water systems, and particularly
open vented systems. This may be regarded as an
essential requirement for systems incorporating Ideal
Concord Super boilers. It is assumed, incorrectly, that
because boilers are operating in conjunction with what is
apparently a closed circuit, and open vented system will
not, under normal circumstances, allow damage or loss
of efficiency due to hardness salts and corrosion once the
initial charge of water has been heated up a few times.
This is not the case. Open vented systems are not
completely sealed of from the atmosphere (if proper
venting and expansion of system water is to be achieved).
The same tank is used to fill the system with water and it
is through the cold feed pipe that system water expands
into the tank as the system heats up.
Conversely, as the system cools, water is drawn back
from the tank into the system, together with a quantity of
dissolved oxygen. Also there will be evaporation losses
from the surface of the tank which, depending on ambient
temperature, maybe high enough to evaporate a large
portion of the system water capacity over a full heating
season. For these reasons, there will always be corrosion
or salt deposition within a heating or hot water system,
irrespective of water characteristic unless the initial fill
water front he mains is treated. 1mm of lime reduces the
heat transfer from metal to water by 10%.
Lime deposition can also cause noises from the boiler
body or even premature failure. Corrosion and the
formation of black iron oxide sludge will ultimately result in
premature radiator and pump failure.
Existing systems and, where necessary, new systems
should be thoroughly cleaned prior to the use of a stable
inhibitor, which does not require continual topping up to
combat the effects of hardness salts and corrosion on the
heat exchangers of the boiler and associated systems.
Ideal Boilers advise contact directly with specialists on
water treatment, such as:
Fernox, Cookson Electronics,
Forsyth Road, Sheerwater, Woking,
Surrey, GU21 5RZ
Tel. +44 (0) 1799 550811
Or
GE Bets, Sentinel Division,
Foundry Lane, Widnes, Cheshire, WA8 8UD
Tel. +44 (0) 151 420 9563
ELECTRICAL SUPPLY
230 V - 50 Hz. Consumption: 90W per module (excluding
remote alarms etc.)
Note. External wiring and any installer-supplied remote
warning lights MUST be in accordance with the I.E.E.
(BS.7671) regulations and any local regulations which apply.
The method of connection to the mains supply should
facilitate complete electrical isolation of the boiler.
Connection should be made via a fused double pole switch
or fused spare box, serving the boiler only, and incorporating
contacts with a separation of at least 3 mm in all poles. The
point of connection should be readily accessible and adjacent
to the boiler.
The length of the power supply conductors between the cable
anchorage and the terminals must be such that the current
conductors become taut before the earth conductor, if the
cable slips out of the cable anchorage.
The water flow switch and any other overriding safety devices
should be wired in series with the isolation mains supply to
the boiler.
50 kW SINGLE MODULE BOILERS ONLY
(Frame 11)
50 kW boilers are supplied with a multi-pin plug for connection
to the mains, as follows:
EARTH ........... Terminal 1
LIVE ............... Terminal 2
NEUTRAL .......Terminal 3
Link between Terminals 6 & 8 ......... by installer
11 MULTI-PIN PLUG WIRING FOR SINGLE MODULE
BOILER ONLY
GENERAL
Legend:
Terminal 1
- EARTH
(Green/Yellow)
Terminal 2 - LIVE (Brown)
Terminal 4 - NEUTRAL
(Blue)
Terminal 6
- Linked to
Terminal 8 by installer