Set-up and Connections
16
Boiler Water Connections
(continued)
4.
For boiler water supply temperatures
over 230°F / 110°C:
Install a type-tested high limit safety
cut-out, if no other has previously
been installed in this system. For this
purpose, install a dual thermostat
(high limit thermostat and high limit
safety cut-out).
5.
Close off test nipples which are not
used for the installation of a probe or
sensor.
Use a Loctite 55 on all threaded steel
nipples on tank.
Domestic Water Connections
B
DHW
A
RP
RPU
D
T&P
DCW
SV
FV
PGC
BP1
D
SV
SV
D
DW
PR
SV
BP2
DCW
DCW
E
DHW
C
Fig. 17
Spring-loaded flow check valve
Discharge pipe
Thermostatic mixing valve
SV Shut-off valve
FV Flow check valve
PR Pressure reducer
D Drain
This is a simplified conceptual drawing
only! Piping and necessary componentry
must be field verified. Proper installation
and functionality in the field are the
responsibility of the heating contractor.
DCW Cold water supply lines
PGC Pressure gage connection
E
Precharged expansion tank
(required where backflow
preventer is installed; check local
plumbing codes and
requirements)
BP1
Backflow preventer
BP2
Backflow preventer / pipe
separator
T&P Temperature and pressure relief
valve
DW
Drinking water filter
DHW Domestic hot water supply
RP
Recirculation pipe
RPU Recirculation pump
Please note:
H
Connect all pipework with detachable
fittings.
H
Seal connections that are not
required, with red brass caps.
H
Equip the DHW circulation pipe with
circulation pump, check valve and
time switch. Gravity operation is only
feasible to a limited degree.
H
Always install DHW tank batteries
with connected DHW circulation.
1.
Pipe together boiler and tank as
illustrated. Connections must be
accessible for service (use factory
supplied adaptors).
2.
Insulate domestic hot water supply
piping.
Due to the potentially high DHW
temperatures generated by the solar
heating system, the domestic hot water
temperature must be limited to a
maximum of 140ºF/60ºC by installing a
mixing device, e.g. thermostatic mixing
valve. The mixing device does not
completely eliminate the risk of scalding
at the tap. The installation of a mixing
tap is required.
DANGER
IMPORTANT
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658
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IMPORTANT
Summary of Contents for Vitocell-B 100 CVB Series
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