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Installation
Typical
system la yout if using Honeywell 'Y' plan
Feed and
Vent Cistern
Primary
cold feed
(15mm min.)
Heating vent
(22mm min.)
150mm max
Boiler
Fig. 5
Typical
system layout if using Honeywell 'S' plan
Feed and
Vent Cistern
Primary
cold feed
(15mm min.)
Heating vent
(22mm min.)
150mm max
Boiler
Fig. 6
12
S.H.
Domestic hot
water cylinder
Diverting
Pump
S.H.
Domestic hot
water cylinder
Diverting
Pump
S.H.
valve
Bypass or
uncontrolled
radiator
(if required)
Refer to system
notes.
S.H.
valves
Bypass or
uncontrolled
radiator
Refer to system
notes.
S.H. – Minimum static head 1.0m
measured from the highest point in the
heating system (top surface of the appliance
or highest point in the heating system) to the
water level in the feed and expansion tank
N.B. A drain cock should be
installed at the lowest point of
the heating circuit
Radiator
6 720 611 137 -26.1O
S.H. – Minimum static head 1.0m
measured from the highest point in the
heating system (top surface of the appliance
or highest point in the heating system) to the
water level in the feed and expansion tank
N.B. A drain cock should be
installed at the lowest point of
the heating circuit
Radiator
6 720 611 137 - 27.1O
6 720 611 137 GB (03.02)
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