Wh And Whx Single Water Heater Installation With St Range Storage Cylinder - andrews FASTflo WH42 Installation Design Manual

1.7

WH and WHX single water heater installation with ST range storage cylinder

Fig. 7
1. Stop cock
2. Strainer
Remote
3. Pressure reducing
controller
valve
set to 70°C
4. Non return valve
5. Expansion vessel
6. Expansion valve +
tundish
7. Andrews bronze
pump c/w ball valve
unions (part no. B249)
8. Combined temperature
and pressure relief valve
+ tundish
1 2 3
Cold supply
NB. size mains pressure group
to suit building design flow rate
1.8 WH and WHX multiple water heater installation with ST range storage cylinder,
quick connect cord kit and secondary return
Fig. 8
Please refer to the
FASTflo specification
sheet and flue selection
guide for flue kit and
termination details.
1. Stop cock
2. Strainer
3. Pressure reducing
valve
4. Non return valve
5. Expansion vessel
6. Expansion valve + tundish
7. Andrews bronze pump c/w
ball valve unions (part no.
B249)
8. Combined temperature
and pressure relief valve
+ tundish
1 2
Cold supply
NB. Size mains pressure group to
suit building design flow rate
Draft A 18/07/16
7 Pump
5
4
6
Quick connect cord kit
(part no. B286)
7
5
3 4
6
Bronze secondary pump
Please refer to the FASTflo
specification sheet and flue
selection guide for flue kit and
termination details.
Gas
Tank thermostat kit (part no.
C927) set to 65°C
Remote controller
set to 70°C
Gas
Pump
Tank thermostat kit (part
no. C927) set to 65°C
HWS flow
Gas Rate for NG Units
WH42 - 5.1 m
8
WH56, WHX56 - 6.5 m
Storage
cylinder Gas Rate for Propane Units
LWH42 - 1.9 m
LWH56, LWHX56 - 2.5 m
Dynamic Pressure
NG 20 mbar
Propane 37 mbar
Hot Outlets
HWS flow
Gas Rate for NG Units
8
WH42 - 5.1 m
Storage
WH56, WHX56 - 6.5 m
cylinder
Gas Rate for Propane Units
LWH42 - 1.9 m
LWH56, LWHX56 - 2.5 m
Dynamic Pressure
NG 20 mbar
Propane 37 mbar
Installations 1
Hot outlets
/hr
3
/hr
3
/hr
3
/hr
3
/hr
3
/hr
3
/hr
3
/hr
3
7