andrews L24/31, Installation Manual, Operation And Service Manual

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INSTALLATION SECTION 3
STANDARD RANGE MODELS
External wiring to the water heater(s) must be installed in accordance with current I.E.E.
Regulations for the wiring of buildings and to any Local Regulations that may apply.
The Auto Ignition Heater is designed to operate from a 220/240V, 1Phase supply.
The fuse rating is 5 amps.
The method of connection to the mains electricity supply should facilitate complete
electrical isolation of the appliance, preferably by use of an unswitched shuttered socket
outlet in conjunction with a fused three pin plug, both complying with the requirements
of BS 1363.
Alternatively, a fused double pole switch or fused spur box serving only the heater may
be used.
The point of connection to the mains electricity supply should be readily accessible and
adjacent to the appliance.
Fig 4.
Connect the electrical supply to the main control panel terminal block via the cable
glands in the base of the control panel. Mains input cable should be 0.75mm
2 , 3 core,
and should be connected to the mains supply as detailed above.
It is recommended that screen cable is used where the volt-free contacts are to be
connected from an external supply. This will eliminate the risk of possible interference
from nearby high voltage cables.
A separate data sheet is available for Automatic Ignition Control System.
Contact Andrews Water Heaters.
ELECTRICAL
SUPPLY-
AUTO IGNITION
UNIT
10
Fig 4.
FLUE FAN
INTERLOCK 24V
REMOTE TIMER 24V
INDEPENDENT MOTOR SUPPLY