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4.4 VENTILATION REQUIREMENTS
The following notes are for general guidance:
- The Morco MORCO FEB-24ED 3! is a room
sealed appliance and needs no purpose provided
combustion air ventilation.
- If the boiler is to be built into a small cupboard or
compartment (i.e. at minimum clearances)and over-
heating can be forseen (i.e. close proximity to a cook-
ing appliance etc) permanent air vents are recom-
mended for cooling purposes in the cupboard or
compartment . The following table gives the minimum
effective areas of the vents.
4.5 ELECTRICITY SUPPLY
A 3 amp fused three pin plug for use with 230V-50Hz
is supplied fitted to the appliance.
It should be used with a shuttered socket outlet com-
plying with BS 1363
THIS APPLIANCE MUST BE EARTHED
4.6 GAS SUPPLY
- A Propane gas supply at 37m bar is required.
- Ensure the regulator is of sufficient capacity to
carry the maximum boiler input plus the demand for
any other installed appliances.
- Ensure the connection between the supply/bottle
and the caravan holiday home or park home is
designed so that no pressure drop occurs.
- No more that 3 m of 15mm pipe should be used.
Where the supply exceeds 3 m the pipe should be
suitably sized only reducing to 15mm before the boil-
er
- A full bore isolation cock must be fitted in the sup-
ply close to the boiler or use morco part number
FW0391.
- The complete installation must be tested for gas
soundness.
4.7 WATER SYSTEMS - GENERAL
- This appliance is designed for connection to sealed
central heating water systems.
- Prior to filling the central heating system (see sec-
tion 6.2) It is recommended that where the system is
installed in a caravan holiday home, subject to non -
continuous use, anti-freeze is used.
4.8 REQUIREMENTS FOR SEALED
WATER SYSTEMS
The heating system design should be based on the
following information:
- The available pump head is given below.
- A minimum flow rate corresponding to a heating dif-
ferential of 20°C must be obtained at all times.
- A heating by-pass should be fitted to ensure that
the above condition is satisfied. If thermostatic radi-
ator valves are to be installed, at least one radiator
should be without a thermostatic valve (usually the
bathroom radiator).
- A sealed system must only be filled by a competent
person using an approved filling loop connected
between the mains water supply pipe and the central
heating return pipe. Once filled the loop should be
disconnected and left adjacent to the boiler.
- The fol
Position of air
vent
Air from room/int
space
Air direct from
outside
HIGH LEVEL
LOW LEVEL
13000 mm
2
13000 mm
2
7500 mm
2
7500 mm
2
