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6.3 Electrical connections
WARNING
Disconnect
`
electrical supply before removing
any covers.
This product must be earthed. It is
`
suitable for a.c. supply only.
Disconnect the electrical supply
`
before
cover.
Installation must be in accordance
`
with the current I.E.E. Wiring
Regulations.
The product is supplied fitted with a 1.0m 3 core
`
1.5mm2 flexible cable on the 3kW model. The
electricity supply should be fused 13 Amp for a
3kW model and be via a double pole isolating
switch with a contact separation of at least 3mm
in both poles. Refer to the schematic wiring
diagrams (figure 3.3 page 5).
The wires are colour coded as follows:
Green and Yellow
Brown
Blue
from
the
mains
removing
the
terminal
EARTH
LIVE (L)
NEUTRAL (N)
7. Commissioning
7.1 General
After filling the installation with water in the previous
section please follow the following steps to complete
the installation of the product.
WARNING
DO NOT switch on the product until it has
been filled with water.
7.2 Checklist before commissioning
Check all water connections for leaks and rectify
`
as necessary.
Check that all installation, electrical and
`
discharge pipe requirements have been met.
Check that electrical connections are tight.
`
7.3 Commissioning procedure
Open a hot water tap; turn on mains water
`
supply to the product.
Allow product to fill and leave hot tap running
`
for a short while to purge any air and flush out
the pipework. Close the hot tap and check the
system for leaks.
Manually test the operation of the Temperature/
`
Pressure Relief Valve and, if fitted, the Pressure
(expansion) Relief Valve. Ensure water flows
freely from the valve(s) and through the
discharge pipes.
Switch on the electrical supply. The indicator
`
light will illuminate during heating. When the set
temperature is reached, the indicator light will go
out.
The set temperature can be adjusted by rotating
`
the knob located in the terminal cover. It is
possible to lock the thermostat knob in either
the mid-range or a "hot" position by following
the procedures below. Always switch off the
electrical supply before removing the terminal
cover.
11
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