A.O. Smith AHD 290 - Manual (Page 3)

AH(D)(DS)
Installation diagrams
A Cold water
B Hot water
C Return circulation
1 Pressure reducing valve
4 Stop valve
5 Non return valve
6 Circulation pump
9 Drain valve
11 Isolating valve
12 Temperature gauge
13 Condensate drain
14 Hot water outlets
15 Expansion relief valve
16 Expansion vessel
17 Three-way valve
18 Hot water tank
19 Float valve
At this moment the AHDS
for solar applications is
being fi ne-tuned by our
Engineering Department.
For more information,
please contact our Technical
Support Group.
Vented
Unvented
Vented (AHDS)