10
Fig. 7: Electrical connections (schematic)
INDIRECT MODELS
1 2
GREEN/
YELLOW
13 AMP MAINS
SUPPLY. 1.5mm
2
MIN. CABLE SIZE
TO INDIRECT SYSTEM
CONTROLS JUNCTION
BOX - SEE FIGS. 8/9
GREEN/
YELLOW
BROWN
BLUE
3
DIRECT
THERMOSTAT
B
A
1
1
2
2 3
INDIRECT
THERMOSTAT
INDIRECT THERMAL
CUT-OUT
TERMINAL
BLOCK
DIRECT MODELS
BR
O
W
N
BL
U
E
G
R
EE
N
/Y
EL
LO
W
Note:
On models fitted with two elements each element must be
wired individually in accordance with the diagram above.
THERMOSTAT
EARTH
CONNECTION
FUSED (13A) DOUBLE
POLE ISOLATING
SWITCH
A
B
1.5mm
2
3 CORE
HOFR SHEATHED
CABLE
INSTALLATION - DIRECT UNITS
PLUMBING CONNECTIONS
POTTERTON GOLD direct cylinders require the fol-
lowing
pipework connections.
•
Cold water supply to and from inlet controls.
•
Outlet to hot water draw off points.
•
Discharge pipework from valve outlets to
tundish
ELECTRICAL SUPPLY
(FIG. 6)
100 litre direct Potterton Gold units are fitted with
one 3kW immersion heater, all other direct mod-
els are fitted with two 3kW immersion heaters as
standard. It is recommended that these should be
wired via a suitable controller to BSEN 60730.
The
POTTERTON GOLD MUST be earthed.
All wiring to the unit must be installed in accordance
with the latest IEE Wiring Regulations and the circuit
must be protected by a suitable fuse and double
pole isolating switch with a contact separation of
at least 3mm in both poles. The live and neutral
connections are made directly onto the combined
thermostat and thermal cut-out located under the
terminal cover(s) mounted on the side of the unit.
The earth connection should be made to the earth
connection located to the side of the immersion
heater boss(es). The supply cable must be routed
through the cable gland located on the unit casing
beneath the terminal housing.
DO NOT
operate the immersion heaters until the
cylinder has been filled with water.
SAFETY
DISCONNECT FROM THE MAINS SUPPLY
BEFORE REMOVING ANY COVERS.
Never attempt to replace the immersion heater(s)
other than with the recommended Potterton Gold
immersion heater(s).
DO NOT
BYPASS THE THERMAL CUT-OUT(S)
IN ANY CIRCUMSTANCES
. Ensure the two
male spade terminations on the underside of the
combined thermostat and thermal cut-out are
pushed firmly onto the corresponding termina
-
tions on the element plate assembly.
In case of difficulty contact service support;
contact details available at the back of this
booklet.
