8
3.5 Pipe installation
3.5.1 Incoming water pressure
The efficiency of the product depends on the in-
coming cold water pressure. The water pressure
shall be min. 2 bar and max. 6 bar throughout the
day. If excessive water pressure is detected then
it may be necessary to install an additional in-line
pressure reduction valve and set it at twice the re-
quired setting pressure of the PRV supplied in the
fittings kit.
3.5.2 Fitting pipes
A) Run a pipe of suitable size to the connec-
tions shown, and affix with suitable sealant.
Unused connections must be plugged secure-
ly.
B) The product can be connected in series,
parallel or reverse return pipework for linking
units together where increased system capac-
ity is required (illustration shows series con-
figuration). Please fabricate using your own
connecting pipes.
3.5.3 Fitting of overflow pipe
The discharge pipe from the T&P safety valve
shall be at least one pipe size larger than the
nominal outlet size of the safety device (< 9m
length). The discharge pipe shall have continu-
ous fall to drain, be uninterruptable and frost-
free at all times.
•
Connects to the overflow (8) on the T&P
safety valve (ø22 mm.).
•
Clear, undamaged and frost-free with a
fall to the drain.
The product is designed to be permanently con-
nected to the mains water supply. Approved pipes
of the correct size should be used for installation.
The relevant standards and regulations must be
followed.
Connections, 600-1000 litres:
9
9
8
No.
Dimension
Connection description
1 G1½” internal thread
Hot water out
2 G3/4” internal thread
T&P valve
3 G3/4” internal thread
Hot water circulation
4 G3/4” internal thread
Anode (factory-fitted)
5 G3/4” internal thread
Thermometer
6 G1½” internal thread
Cold water in
7 G1" outside thread
Draining
8
-
Lifting lug
2
3
4
5
7
6
1
1
3
4
5
7
6
2
8
600 l.
1000 l.
