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If this appliance is to be installed on a low water pressure installation, obtain the
Main Medway Super Low Pressure Throttle Kit - Part No 31/17756
(G.C. No. 285 888) before proceeding with the installation.
1. INTRODUCTION – page 2
The Main Medway Super is a room sealed instantaneous water heater designed to supply hot waterto several outlets which
may be situated in different rooms, but not necessarily at the same time.
The pilot is lit by a piezo spark ignitec no batteries or electricity are required. The main burners will automatically light when a
domestic hot water tap is turned on and go out when the tap is turned off.
This appliance is not suitable for use with a swivel spout.
ENERGY CUT-OFF DEVICE
This appliance contains an Energy Cut-Off Device that will shut down the gas supply to the appliance if the water within
the heat exchanger exceeds the anticipated temperature limit after the hot water tap has been turned off - See Page 21.
VENTILATION
Being a room sealed appliance, the Medway Super does not require an air vent in the room or space in which it is installed.
Where this appliance is installed in a compartment, air vents to the compartment at both high and low levels, should be
provided for cooling.
Further guidance is given in BS 5440 Pt.2.
In compartment which is ventilated to room
In compartment which is ventilated to outside
GENERAL
IMPORTANT: The area of wall covered by the appliance must be flat.
The clearances required around the Flue Terminal are shown on the Flue Template supplied with the Terminal Pack.
The appliance must be fitted on an external wall to allow the Flue Terminal to pass directly through the wall to the outside
air.
If the appliance is to be installed into a "SEDUCT" the minimum duct required is 228mm (9in.) deep, 349mm (1 5½in.) wide.
This appliance may take the place of an existing appltance and will mount onto the original flue terminal of any of the
following: AVON, BRISTOL, MEDINA, MEDINA D/L, MEDWAY, MERSEY, SEVERN 3, SEVERN 4, SEVERN 5 and TRENT.
2
IMPORTANT
Position of Air Vent
High
274 cm²
42 in²
137 cm²
21 in2
Low
274 cm2
42 in2
137 cm2
21 in2
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