State Water Heaters SCE 65-400, Installation, User And Service Manual

Page: 27 / 72

Water connections Vented
Release R.1.0 Uk 27
is
3.6.5 Circulation pipe
See
c
in Figure 3.2 . and Figure 3.3 .
If you wish to have hot water at hot water draw-off points immediately, a
circulation pump can be installed. This increases ease of use and prevents
water spillage.
1. Fit a circulation pump
f
of a capacity corresponding with the size and
resistance of the circulation system.
2. Fit a non-return valve
e
after the circulation pump to guarantee the direction
of circulation.
3. Fit two stop valve s for servicing
d
.
4. Connect the circulation pipe to the T piece for the drain valve
g
. See
Figure 3.3 .
3.7 Water connections
Vented
3.7.1 Cold water side
See
a
in Figure 3.2 .
1. Fit an approved stop valve on the cold water side between the water
reservoir
o
and the appliance
i
in accordance with the regulations in force.
See also paragraph ’1.3 Regulations’ .
3.7.2 Shunt pipe
You can connect a shunt pump to prevent stacking of the water in the
waterheater.
1. Optional: fit a shunt pipe depending on the tap design (Ø 22 mm), a stop
valve
i
and a shunt pump
k
.
2. Fit a non-return valve
e
.
3. Fit a stop valve
i
.
3.7.3 Hot water side
See
b
in Figure 3.2 .
n
Remark
Insulating long hot water pipes prevents unnecessary energy loss.
1. Fit the T&P valve
c
.
2. Optional: fit a temperature gauge
j
to check the temperature of the tap
water.
3. Fit a stop valve
i
in the hot water outlet pipe for servicing.
4. Refer to paragraph 3.7.4 if a circulation pipe is to be fitted.
Figure 3.3 Drain valve
IMD-0122
c