Heatrae Sadia Multipoint Instantaneous, Fitting Instructions Manual

Page: 7 / 16

7
A - Outlet valve
B - Flow restrictor
C - Multipoint instantaneous
D - Expansion relief valve
E - Services stop valve
A
B
C
D
E
Figure 3
Electrical
Before fitting the product, ensure that the consumer
unit and any switches are suitable for the additional
load. If in doubt, contact your electricity supplier or a
qualified electrician.
WARNING
This product must be earthed.
A residual current device (rcd), formerly known as an
earth leakage circuit breaker (elcb), with a tripping
current of 30mA must be incorporated in the circuit.
Multipoint Instantaneous unit
(use rear entry when it is
possible)
80A or 100A main switch
Meter
Meter ‘tails’
Consumer
unit
RCD (can be part of
the consumer unit)
Double pole isolating switch:
pull cord or wall mounted in accordance
with IEE regulations
Figure 4
5.3 Choice of location
The product must be mounted on a flat surface which
covers the full width and length of the back plate. It
is important that the wall surface is flat otherwise
difficulty may be encountered when fitting the cover.
DO NOT fit the product to the wall and tile up to the
case. It must be fitted on to a finished flat and even
wall surface. This allows removal for servicing.
5. Before installation
5.1 Installation regulations
WARNING
`
ISOLATE the electrical and water
supplies before removing the
cover.
`
ISOLATE the electrical and water
supplies BEFORE proceeding
with installation or servicing.
`
The product is NOT SUITABLE
for mounting into steam rooms or
steam cubicles.
WARNING
Installation of the product must be carried
out by a qualified engineer in accordance
with prevailing and national regulations as
listed below.
`
Building Regulations
`
The Building Standards (Scotland)
`
The Building Regulations
(Northern Ireland)
`
I.E.E Electrical Regs
`
UK Water Regulations
5.2 Installation Requirements
Plumbing
The plumbing installation must comply with Water
Regulations.
All 7kW and 9kW heaters have an operational
pressure range of 0.1Mpa (1bar) to 0.7Mpa (7.0bar).
Both inlet and outlet connections are suitable for
15mm diameter copper pipe.
The tee piece and expansion relief valve must be
situated where shown (see figure 3, item D) and the
relief valve discharge port plumbed via an air break
(tundish) to a safe, visible place where there is no
risk to persons.
The discharge pipe must fall continuously from the
valve outlets and be unobstructed.
An isolating stop valve MUST be incorporated to the
main water supply to comply with Water Regulations
To obtain optimum performance a flow restrictor
(isolating ball valve) must be fitted where shown (see
figure 3, item B). This provides temperature control
during commissioning (see 7.3 p10).