IMPORTANT
PLEASE READ THIS BOOK
BEFORE INSTALLING,
OPERATING OR SERVICING THIS APPLIANCE.
Page 1
1. INTRODUCTION - Page 2
The Main Mersey Super is a room sealed instantaneous water heater designed to supply
hot water to several outlets which may be situated in different rooms, but not necessarily at
the same time.
The pilot is lit by a piezo spark igniter: 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 Mersey 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.
Position of Air Vent
High
Low
In compartment which is ventilated to room 274 cm²
274 cm²
Page 2 of 35
Mersey Super - Installation & Service Instructions
09/12/2009
file://P:\System\DATA\Dx\DS1\installation\2551\I24-2551\I24-2551.htm
