Potterton Suprima 100, Installation & Service Instructions Manual

Page: 11 / 38

Installation Requirements Page 11
Fig. 5 Fig. 6
Double
Check Valve
Heating
System
Heating
System
Stop
Valve
Stop
Valve
Mains Water Supply
(Ser vice Pipe)
Stop
Valve
Method 1 Method 2
Mains Topping-up Method Cistern Filling Method
NOTE: This method of filling
a sealed system may only be
used if acceptable to the Local
Water Undertaking NOTE: Cistern to be supplied through
a temporar y connection from a service
pipe or cold water distribution pipe
Cistern
Pressure Pump Reducing
Valve (If Required)
Mains
Water
Supply
Overflow
Temporary Connection
(Flexible Hose With Union)
S
U
P
0
0
0
9
B
Circulation Pump Selection
The resistance through the heat exchanger when operating
with a water flow rate producing an 11°C temperature rise at
maximum boiler output are shown in the table. If other
controls such as three position valves are used in the
system, the resistance through them, quoted in their
manufacturers literature must be taken into account. The
pump may be fitted on either the flow or return and MUST be
wired directly to the boiler terminal block. It must be fitted
with two isolating valves which are positioned as close to the
pump as possible. Closing of any valve must always leave
the open vent unobstructed.
S
U
P
0
0
7
2
A
P
re
s
s
u
re
D
ro
p
(
m
e
tr
e
s
)
Flow Rate (litres/ min.)
0
0
1
2
3
4
5
20 40 60 80
Flow rate for
11° C diff.
@36 kw output.
Flow rate for
20° C diff.
@17.8 kw
output.
Resistance Hydraulic Resistance
100 Model