32
Multi Pass Oil Boilers
4 - BOILER INSTALLATION
It is recommended that the boiler should be connected
to a switched mains power supply from an external
timer or control system.
1
Position the thermostat phials of the combined
boiler/overheat thermostat in the thermostat pocket
on the top of the boiler. Push the assembly fully
home onto the pocket, with the cable entries to the
front and secure in position by tightening the two
fixing screws.
2
Undo the three screws securing the combined
boiler/overheat thermostat cover and lift off the
cover.
3
Withdraw the cable support bushes from the cover.
Pass the burner supply cable through one of the
bushes and connect it to the boiler (control)
thermostat (refer to Fig. 43) as follows:-
Brown to terminal 1 on the control thermostat
Green/Yellow to the earth terminal, marked , on
the control thermostat
4
Pass a switched mains power supply through the
other cable support bush and connect it to the
overheat thermostat (refer to Fig. 43) as follows:-
Switched live (brown) to terminal C on the
overheat thermostat
Earth (green/yellow) and earth fly lead from casing
to the earth terminal, marked , on the overheat
thermostat
The Blue (neutral) wire from the burner supply
must be linked to the incoming neutral of switched
mains supply using a single connector (not
supplied).
Refer to Section 8. For other systems not covered,
contact Grant Engineering (UK) Ltd.
DO NOT connect the neutral wires to either of
the two thermostats.
5
Connect a link between terminal 2 on the overheat
thermostat and terminal C on the control
thermostat.
6
There are no connections to terminal 1 on the
overheat thermostat and terminal 2 on the
control thermostat.
7
Position the support bushes so as not to strain the
connections when the cover is replaced.
Place the cover in position locating the bushes at
the same time.
Note: It may be necessary to rotate the thermostat
knob to engage it on the operating spindle as the
cover is replaced.
8
Secure the cover in position by tightening the three
screws. Tighten the cable support bush nuts to
secure the cables.
9
Ensure that all external wiring is adequately
supported.
Do not switch on the electricity supply at this stage.
See Fig. 6 or 7
If a two pipe system is to be used refer to Section 3.3.6.
1
Remove the oil inlet plug from the fuel pump and
connect the elbow of the flexible fuel line supplied
with the boiler.
2
Connect the flexible fuel line to the rigid supply
using the adaptor supplied. For Kitchen models the
supply enters through one of the holes at the
bottom of the case sides or the back panel.
Connect the fuel supply
4.10
Connect power supply - Boiler House models
4.9
Содержание 140/160
Страница 13: ...13 Multi Pass Oil Boilers 3 GENERAL BOILER INFORMATION Fig 3 Two pipe system Fig 2 Single pipe system...
Страница 19: ...19 Multi Pass Oil Boilers Fig 11 Typical conventional flue with brick chimney 3 GENERAL BOILER INFORMATION...
Страница 20: ...20 Multi Pass Oil Boilers 3 GENERAL BOILER INFORMATION Fig 12 External flue Green system...
Страница 41: ...41 Multi Pass Oil Boilers 7 BOILER SERVICING Fig 34 160 200 Baffle arrangement Left Right...
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