Installation manual

INSTALLATION SECTION 3
21
DHW SIDE
DHW Vessel, expansion and cold feed kit.
T
he individual instructions should be read through thoroughly before installing. If there is any
doubt, please ask Andrews Water Heaters. Installation should only be carried out by
competent persons. Standard system supplied are unvented, therefore the system should
only be installed and commissioned by qualified persons as per Building Regualtions.
PLEASE NOTE: The installation of the DHW system should be carried out as a standard DHW
system following all regulations in the Building Regulations G3 and water regualtions.
Consideration should be given to Legionella using L8 for guidance.
This section is not a comprehensive guide to DHW installation all supplied equipment
Installation instructions should be read fully and the above regulations adhereded to.
Dependant on the scope of supply the cold feed and expansion system will be supplied
with either the solar cylinder or the direct-fired water heater.
On all combined systems both expansion and cold feed equipment will be supplied with
the solar cylinder.
Please refer to the technical appendix and specification sheet to determine the unit
supplied.
SOLAR COLLECTOR
P
ANELS
SECONDARY RETURN
P
UMP
NON-RETURN
V
ALVE
NON-RETURN
VALVE
HOT WATER
OUTLETS
FLOW
FLOW
MAXXFLO
W
ATER HEATER
PRE-HEAT
S
OLAR VESSEL
ANTI-LEGIONELLA
C
IRCUIT & PUMP
(TIMED)
SOLAR
EXPANSION
V
ESSEL
COMMISSION
& FILLING
V
ALVE
H
I-LIMIT STAT
TEMPERATURE /
PRESSURE RELIEF
VALVE
7 BAR / 95ºC
DRAIN
C
OCK
E
XPANSION
VESSEL
EXPANSION RELIEF
VALVE 6 BAR
NON-RETURN
VALVE
PRESSURE
L
IMITING & LINE
STRAINER VALVE
3½ BAR
COLD WATER
SUPPLY
STOP
C
OCK
D
SOLAR PUMP
S
TATION
SOLAR CONTROL PANEL
COLLECTOR
SENSOR
SOLAR COLLECTOR
PANELS
HOT WATER
OUTLETS
FLOW
HEATING
BOILER
LOW LOSS
HEADER
TWIN COIL
VESSEL
S
OLAR
E
XPANSION
V
ESSEL
C
OMMISSION
&
FILLING
VALVE
HI-LIMIT STAT
TEMPERATURE /
PRESSURE RELIEF
VALVE
7
BAR / 95ºC
DRAIN
COCK
EXPANSION
VESSEL
EXPANSION RELIEF
VALVE 6 BAR
NON-RETURN
V
ALVE
PRESSURE
LIMITING & LINE
S
TRAINER VALVE
3½ BAR
COLD WATER
SUPPLY
STOP
COCK
D
SECONDARY RETURN
PUMP
NON-RETURN
VALVE
SOLAR PUMP
STATION
SOLAR CONTROL PANEL
COLLECTOR
SENSOR