Installations - andrews FASTflo WH42 Installation Design Manual

1

Installations

1 Installations
1.1 WH and WHX single water heater installation without secondary return
Fig. 1
Please refer to the FASTflo
specification sheet and flue
selection guide for flue kit and
termination details.
Water Supply Pressure
Min 1.0 bar
Max 10.0 bar
Min flow 3.5 ltrs/min
1
Cold Supply
1. Stop Cock
1.2 WH and WHX single water heater installation with secondary return
Fig. 2
Please refer to the FASTflo
specification sheet and flue
selection guide for flue kit and
termination details.
Water Supply Pressure
Min 1.0 bar
Max 10.0 bar
Min flow 3.5 ltrs/min
1 2 3 4
Cold Supply
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)
4
5
6
Bronze secondary return pump
Remote controller kit
(part no. B285)
Gas
HWS flow
Hot Outlets
Remote controller kit
(part no. B285)
Gas
7
HWS flow
Gas Rate for NG Units
WH42 - 5.1 m /hr
3
WH56, WHX56 - 6.5 m /hr
3
Gas Rate for Propane Units
LWH42 - 1.9 m /hr
3
LWH56, LWHX56 - 2.5 m /hr
3
Dynamic Pressure
NG 20 mbar
Propane 37 mbar
Gas Rate for NG Units
WH42 - 5.1 m
/hr
3
WH56, WHX56 - 6.5 m /hr
3
Gas Rate for Propane Units
LWH42 - 1.9 m /hr
3
LWH56, LWHX56 - 2.5 m
3
Dynamic Pressure
NG 20 mbar
Propane 37 mbar
Hot Outlets
Draft A 18/07/16
/hr