Installation guide

INSTALLATIONSECTION 3
8
External wirin g 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 isola tion 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.
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.
ELECTRICAL
SUPPLY -
AUTO IGNITION
UNITS
Limit Thermostat
Control Thermostat
Lock Out LED
Pilot Burner Assembl
y
Brown Cable
Blue Cable
Yellow Cable
Red Cable
10
EP6SX Automatic Gas Burner Control Unit
9
8
7
6
5
4
3
2
1
Relay 2
10
Volt Free
Output For
Over-Heat
9
8
7
6
5
4
3
2
1
}
}
Time Switch Motor If Fitted
Black Cable
Volt Free
Output For
Lock Out
Fuse 5 A
Maclaren Gas Block
Gas Inlet ” BSP
Gas to Main Burner
” BSP
Neutral
Live Input
Interlock
Contact 2
(Time Switch)
Interlock
Contact 1
(Additional
Combustion
Safe
g
uard)
Earth Pin
Custom PCB
Power “ON” Neon
NOTE:
The Interlock contact terminals 3&4 – 5&6
must be linked if no device is fitted
HT Lead
Auto Ignition