WARNING: THE UNIT MUST BE FILLED WITH WATER BEFORE POWER IS
SWITCHED ON. FAILURE TO DO THIS MAY RESULT IN THE HEATING
ELEMENT BECOMING TOO HOT, CAUSING THE ONE-SHOT SAFETY
THERMAL FUSE TO OPERATE AND MAY INVALIDATE YOUR
GUARANTEE.
Setting up the temperature thermostat
The four settings indicated by the temperature thermostat are: -
III This gives very hot water, which can be mixed with cold water to produce quantities
of usable water greater than the actual capacity of the heater.
II This setting will deliver, direct water suitable for washing up.
I This setting will deliver, direct, water suitable for hand washing.
• This setting will maintain the water in the heater just above freezing point if the
heater is to be left unattended whilst subject to freezing conditions.
The electricity must be left on for this facility, and the mechanical programmer
must be in the “ ” setting.
Water expands when heated, thus during the initial heating of cold water admitted to
the heater, drips from the outlet spout may occur.
If it is required that the adjustments of the thermostat is not available to the users of
the heater, then after first establishing that the temperature is as required, the knob
may be removed and the blanking grommet (supplied free with heater) inserted in the
hole.
This grommet is a relatively loose fit, and can be made more secure by the use of
suitable silicone sealant or PTFE tape etc. (not supplied).
Draining the Tank
If it is required to drain the tank, this can be effected by undoing the screw in the base
plate of the heater (see “Tank Drain” Diagram 3), and catching the water in an
appropriate vessel.
We recommend that the water in the heater is left to cool, or that any hot water is run
through the heater before commencing this operation.
The heater must be disconnected from the electrical supply before commencing
this operation.
Take care to protect the mechanical programmer from any water.
If the unit fails to heat water
1. Check that the switching time on the mechanical programmer is set to be “ON”.
2. Check that the mechanical programmer is not in the “ ” position.
3. Check that the mains fuses are not blown and that the mains supply is switched on.
4. Check that the cold water supply is on.
5. Check that the outlet has not been blocked in any way.
If the fault persists: -
Contact the dealer from whom you purchased the unit or the installation engineer.
You can also call the “Technical Advisory Helpline” (see “After Sales Service”)
3
Water Connection (see Diagram 4 for suggested installation plan)
Oversink (see Diagram 3a)
When using the tap and spout as supplied, the cold water connection is made directly to
the Ø15mm compression fitting at the rear of the cold inlet tap.
Ensure that the water flow is in line with the flow direction arrow moulded on the cold
inlet tap.
Undersink (see Diagram 3b)
If the unit is to be mounted below sink level, it MUST be connected to the special open
outlet Monoblock Mixer Tap as recommended by Redring (see page 7).
The economic performance of the heater will be enhanced by lagging the hot water pipe
from the heater to the outlet.
Oversink and Undersink Installation
Before final assembly of the tap the appropriate restrictor insert must be selected and
fitted into the end of the cold inlet pipe on the heater (see Table A).
The correct insert will ensure that the flow rate of water through the heater is at an
optimum to prevent undue mixing of the incoming cold water with the stored hot water,
as well as avoiding any unnecessary pressure within the tank.
Suggested Installation Plan
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