REMEHA 1000 Indirect, Installation Manual

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WARNING
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If water discharges from the temperature/pressure relief valve on the cylinder shut down the heat source. Do not turn off any water supply.
Contact a competent installer for unvented water heaters to check the system.
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Do not tamper with any of the safety valves fitted to the system. If a fault is suspected contact a competent installer.
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DO NOT bypass the thermal cut-out(s) in any circumstances.
Flow performance
When initially opening hot outlets a small surge in flow may be noticed as pressures stabilise. This is quite normal with unvented systems. In
some areas cloudiness may be noticed in the hot water. This is due to aeration of the water, is quite normal and will quickly clear.
Temperature controls - Auxiliary
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All immersion heaters are fitted with a thermostat which is fitted in the heater plate and a cut-out which is fitted to the side of the
thermostat.
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Access to the thermostat can be made by opening the immersion heater cover - DISCONNECT THE ELECTRICAL SUPPLY
BEFORE OPENING THE COVER(S).
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Temperature adjustment is made by rotating the adjustment knob on the top of the thermostat. The adjustment represents a temperature
range of 10°C to 80°C.
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Maximum working temperature is 80°C/176°F. In very hard water areas limit to 60/65°C (140/150°F).
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For optimal working conditions the thermostat should be set to 70°C max. If the thermostat is set above 70°C there could be instances of
nuisance tripping with the thermal cut-out.
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The thermal cut out is factory set by the manufacturer and should not be tampered with. Any damage caused to the label may invalidate
your warranty.
DO NOT bypass the thermal cut-out(s) in any circumstances.
Temperature controls - Primary Circuit
The cylinder units are fitted with an indirect thermostat and thermal cut-out. These controls must be wired in series with the 2 port motorised
zone valve supplied to interrupt the flow of primary water around the heat exchanger coil when the control temperature has been reached.
DO NOT bypass the thermal cut-out(s) in any circumstances.
Operational faults
Operational faults and their possible causes are detailed in the Fault Finding section. It is recommended that faults should be checked by a
competent installer.
The air volume within the expansion vessel will periodically require recharging to ensure expanded water is accommodated within the system.
A discharge of water INTERMITTENTLY from the expansion valve will indicate the air volume has reduced to a point where it can no longer
accommodate the expansion.