IDEAL Henrad SEC 80FF, Руководство по установке и обслуживанию

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31
Henrad SEC FF -
Installation
41 EXTERNAL WIRING
INSTALLATION
INST
ALLA
TION
Wiring External to the Boiler
WARNING . This appliance must be efficiently earthed.
A mains supply of 230 V ~ 50 Hz is required.
The fuse rating should be 3A.
Wiring external to the boiler MUST be in accordance with the
current I.E.E. (BS.7671) Wiring Regulations and any local
regulations.
All external controls and wiring must be suitable for mains
voltage.
Wiring should be 3 core PVC insulated cable, not less than
0.75 mm
2 (24 x 0.2mm).
Wiring external to the boiler MUST be in accordance with the
current wiring regulations and any local regulations.
Connection must be made in a way that allows complete
isolation of the electrical supply such as a double pole switch
having a 3mm (1/8") contact separation in both poles, or a plug
and socket, serving only the boiler and system controls. The
means of isolation must be accessible to the user after
installation.
1. External Single Channel Timer
This should be wired as shown in Diagram A
2. External Two Channel Timer
This should be wired as shown in Diagram B. The power to the
timer should be isolated with the same switch that isolates
power to the boiler, otherwise the boiler can be left live, even
when the boiler isolating switch is off. Using a two-channel
timer will disable the heating switch.
3. Room Thermostat
It is recommended to use a room thermostat in conjunction
with the boiler to give the most efficient boiler performance and
the most comfortable central heating performance. The room
thermostat should be wired (depending on the timer option) as
either diagram A or B.
4. Frost Protection
a. This is provided automatically by the Gasmodul control.
If the boiler flow temperature T
1
falls below 7
o
C the pump
runs without the boiler firing until the temperature
exceeds 10
o
C
If the flow temperature falls below 3
o
C the boiler will fire
until the temperature exceeds 10
o
C.
b. Central heating systems fitted wholly inside the house do
not normally require frost protection as the house acts as
a 'storage heater' and can normally be left at least 24
hours without frost damage.
However, if parts of the pipework run outside the house or
if the boiler will be left off for more than a day or so then a
frost thermostat should be wired into the system.
Timer
Timer
The frost thermostat should be sited in a cold
place but where it can sense heat from the
system. Wiring should be as shown.
Note .
If the boiler is installed in a garage it may be
necessary to fit a pipe thermostat, preferably
on the return pipework.