Worcester HEATSLAVE 9.24 RSF Installation And Maintenance Instructions Manual page 25

8 . COMMISSIONING
(a] Flush the whole system w ith cold water and fill until the
pressure gauge registers 1.5bar(2 1 .5p.s.i. ). Clear any air
locks and check for water soundness.
(b)
Check operat ion ofthe
safeW
valve. Release water f rom
tile system until the initial system design pressure is
obtained. Taking into account any difference in height
between the pressure gauge and the point at which the
pressure vessel is connected.
NOTE: The initial system design press ure to be 0 . 3 bar (4. 5
p.s.t.) plus the static head of t he system. Tota l pressure
must not exceed 1.5 bar (21.5 p.s.i.) .
(c) Light the boiler and heat t he system to maximum working
t em per ature . Check for water soundness . Turn off
sppliance and drain the system while it is still hot.
(dl
Refill and vent system. Adjust to t he initial syst em design
pressure. Any set pointer on the pressure gauge should be
set to coincide with the indicating
poi nt~o; .
11. DOMESTIC WATER SUPPLY
See Fig . 24.
NOTE : The following instructions are general in sta llation
recommendation s and reference should
be
made t o
the
local
w ater undertaking before f itting any of t hese appliances.
In t he event of difficulty please contact the manufacturer.
1.
MAINS COLO WATER IN LET
Connection is made
as
shown in Fig.
24.
There should be no device capable of preventing
the
flow
of expansion water unless separate arrangements for
expansion water are made. The f inal 600 mm mains cold
water connection to the app liance should be made in
copper only.
The appliance is suitable for connection to a mains supply
having
a
maximum pressure of 10 bar. ( 146
l bfin~l.
It
should not be used if a pressure greater than this is
anticipated.
The app liance is supplied w ith an isolating v31 ve. This
shou ld be f itted to the c old inlet connection for appliance
servicing .
2. HOT SUPPLY AND FLOW REGULATION
No adjustment oft he water flow is required as the appliance
is fitted w ith a water f low regulat or. The maximum flow
of domestic hot water available through t he appliance is
limited to 8 .5
±
15% litres/min . 11 .9 gallons/min.).
NOTE: The f low regulator contained with in the f low
regulator housing is p lastic. Do not heat tile housing during
soldering ope rations on adjacent joints.
3.
TAPSANDVALVES
Hot and cold taps and mixin g valves used with this
appliance must be suitable for operat ing
at
mains pressure.
4 .
SHOWERS (FIXED
HEAD
TYPEI
No anti-syphonage arrangements are necessary.
5.
SHOWERS (LOOSE OR FLEXIBLE HEAD TYPE}
If a loose head shower with
flexib~ e
hose is to be used over
a bath, thehosemust be fixed so that the head cannot iall
closerthan 13mm {0.5in.) abovethetopedgeofthebath
in order that the head is prevented f rom being immersed
in bath water, or the shower m ust incorporate
Of
befitted
with an anti·syphonage device at t he point offlexible hose
connections .
6 .
BIDETS
The supp ly of hot and co ld mains water direct to a bidet is
perm~tted
p
rovlded that the bidet is ofth e ovef-rim flushing
type. The outlet!sl should be shrouded and unable
to
have
any temporary hand held sp ray attached. No an t i-
syphonage arrangements are necessary .
25
7.
USE IN HARD
WATER AREAS
As the maximum temperatures of the domestic hot water
heat exchanger is limited by t he electronic control c ircuit,
there is normally no need for wat er treatment to prevent
scale accumLJiation.
In
exceptional circumst ances th e
' Worcester in-Line Scale Inhibitor' can be
f~ tted
if desired.
The unit is supplied complete with wall mounting bra cket
and installation instructions.
12. ELECTRICAL
See Figs.
26. 27. 28
and
29.
In order t o gain access to the electrical terminal strip:
Ia) Isolate the electrical supply. Remove the cabinet 1ront
co..,er by pulling forward at the bottom edge and unhook
t he panel from the side panel top edges.
(b}
Remove the two
sel1
tapping screws holding the top of the
fac ia to the top of the electric al t ray.
(c)
Remove the two self tapping screws frorn under the
elect rical tray which hold the front facia in position. Pull off
t he thermostat control knob and slide the facia forward.
Woen t he facia is disengaged from the electrical tray
release the plug-i n terminal strip from ins!de the electrical
cover which connects the th ree position switch, or
programmer assembly if this has been f itteci.
If a roo m or frost t hermostat is to be f ittad,
it
should be w ired
into the "ppliance terminal strip
as
shown in Fig.
~6.
One or both
of
the blanking plugs should be removed from t he electrical
cov er and the cable passed through t he hole. A Heyco cord
strain relief bush, packed separate ly w it h these instructions,
should be used to retain the cables at t his point. The cables
should be routed neatly away from hot surfac es to
a
convenient
exit point from the cabinet.
MAINS WIRING
LIVE- BROWN; NE UTRAL -
BLUE; EARTH- YE LLOW
/
GREEN .
EUCTRICITY SUPPLY
240V, -50Hz via a 3 pin plug. fused at 3 Amps from an
unsw[tched shutte red socket botil complying wit h
req\•irements of BS. 1363, adjacent to t he appliance.
Mains Cable: Three core 0 . 75 mm
2
(24 x 0 . 20mml. Should the
factory fitted m ains cable need to be replac ed then the new
cable shoulo be connected into the terminals marked on the left
hand appliance terminal strip. The cable should then be passed
through the cable clamp located in the left hand side of t he
electrical t ray and clipped into the cable retaining clip fixed to
the left hand side. Care should be taken that t he cable is clipped
neatly into place, and cannot contact t he hot water p ipes
beneath the appliance. All external wiring shall compty with the
current lEE Wiring Regulations, and any local regulations which
apply. The appliance must be earthed.
SAFETY CHECK
111 the event of <m electric al fault after installation of the
appliance. preliminary electrical system checks shall be carried
out li.e . earth continuity, polarity and resistance to earth, etc.,
as described in the British Gas Multi meter Handbook) .