Andrews WH and WHX Multiple Water Heater Installation with Secondary Return
Fig No.5
Remote
controller
kit (part no
B285)*
*An Electronic System Controller Kit
can be used as an alternative when
manifolding up to six units. (see Fig.
No’s 6 and 8)
Gas
HWS flow
Hot Outlets
Cold Supply
Bronze secondary return pump
see Fig. No’s. 13 and 14
Gas rate for NG units
WH42 - 5.1 m
3
/hr
WH56, WHX56 - 6.5 m
3
/hr
Gas rate for Propane units
LWH42 - 1.9 m
3
/hr
LWH56, LWHX56 - 2.5 m
3
/hr
Dynamic Pressure
NG 20 mbar
Propane 37 mbar
1
2
3
4
7
5
6
4
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)
Summary of Contents for WH42
Page 18: ...Dimensions WH42 LWH42 WH56 and LWH56 Fig No 15...
Page 19: ...Dimensions WHX56 and LWHX56 Fig No 16...
Page 20: ...WH42 LWH42 WH56 and LWH56 Pre assembled dual manifold unit dimensions Fig No 17...
Page 21: ...WH42 LWH42 WH56 and LWH56 Pre assembled triple manifold unit dimensions Fig No 18...
