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PLUMBING
Diagrams illustrate the basic principles of water systems and are not to be regarded as working drawings.
Fig.12
MOURNE
STANLEY
COOKER
Central Heating and Indirect Domestic Hot Water.
Recommended indirect cylinder 135 litres, depending on domestic requirements with a 28mm flow and return
pipes not exceeding 7.8m each in length. Cylinder and pipework should be lagged to minimise heat losses.
HEATING SYSTEM
The system must include a gravity circuit with
expansion pipe, open to the atmosphere.
central heating will normally be pump-driven as with
other types of boilers.
controls the heating rate of the boiler, Closed =
minimum, Open = maximum output.
See operating instructions.
BOILER OUTPUT (Central Heating)
High output cannot be maintained unless fuel is
being burned at a rate of 2.7 kg. per hour of coal.
When burning wood or peat, reduced outputs will
apply because of the lower calorific value of the
fuels.
The
The primary air valve
NOTE: We strongly advise the use
of pipe lagging and also the use of
a frost thermostat if the installation
is likely to be exposed to situations
where the temperatures will drop to
a level consistent with frost.
GRAVITY CIRCUIT
The gravity circuit consists of a domestic hot water
tank of 135 litres Indirect Cylinder for central
Heating units and Direct Cylinder for Domestic Hot
Water
Unit
fixed
recommended for hot water storage and it should
be connected to the boiler by 28mm diameter flow
and return piping. The pipes should not exceed
7.8m each in length and anything in excess of 4.6m
must be fully lagged. The shorter the run of pipe
work the more effective the water heating efficiency
and to this end, the cylinder should be fully lagged.
In the interest of safety do not have any valves on
this circuit.
9
in
an
upright
position,
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