REMEHA 1000 Indirect, Installation Manual

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Figure 11: Typical discharge pipe arrangement (extract from Building Regulation G3 Guidance Section 3.50)
page 16
6.3 Electrical connections
In case of difficulty contact service support.
WARNING
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Disconnect from the mains electrical supply before removing any covers.
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Never attempt to replace the immersion heater(s) other than with the recommended immersion heater(s).
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DO NOT bypass the thermal cut-out(s) in any circumstances.
All electrical wiring should be carried out by a competent electrician and be in accordance with the latest I.E.E Wiring Regulations.
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Each circuit must be protected by a suitable fuse and double pole isolating switch with a contact separation of at least 3mm in both poles.
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DO NOT operate the immersion heaters until the cylinder has been filled with water.
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The Auxiliary immersion heater(s) should be wired in accordance with fig's 4 and 5.
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All immersion heaters are fitted with a thermostat which is fitted in the centre of the heater plate and a cut-out which is fitted to the side
of the thermostat.
These MUST be wired in series with the operating coil circuit of the contactor (not supplied).
Space and heating systems controls
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The controls provided with the cylinder will ensure the safe operation of the unit within the central heating system. Other controls will be
necessary to control the space heating requirements and times that the system is required to function.
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The cylinder is compatible with most heating controls. Please refer to the controls manufacturers instructions, supplied with the controls
selected.
6.4 Filling the installation
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Check expansion vessel pre-charge pressure. The expansion vessel pressure must be set in accordance with the inlet pressure set on the
pressure reducing valve.
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Ensure the drain cock is CLOSED.
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Open a hot tap furthest from the cylinder.
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Open the mains stop cock to fill the unit. When water flows from the tap, allow to run for a few minutes to thoroughly flush through any
residue, dirt or swarf, then close the tap.
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Open successive hot taps to purge the system of air.
7. Commissioning
7.1 General