DRE
Dimensions
DRE
Installation diagrams
1 Pressure reducing valve
3 T&P valve
4 Stop valve
5 Non-return valve
6 Circulation pump
9 Drain valve
11 Isolating valve
14 Hot water outlets
15 Expansion relief valve
16 Expansion vessel
17 Three way valve
18 Water tank
19 Float valve
A Cold water
B Hot water
C Return circulation
E Overfl ow pipe
H Expansion vent pipe
A.O. Smith unvented
system kits utilise
combination valves
Further installation and
connection details can be
found in the Installation
& Commissioning Manual.
A
1465
1570
1610
B
1410
1530
1580
D
550
640
750
E
690
800
910
M
120
100
100
R
100
100
100
S
1210
1310
1380
1 Cold water
1
1
/
4
-14 NPT
2 Hot water
1
1
/
4
-14 NPT
4 Tank drain valve
3
/
4
-14 NPT
5 T&P valve
3
/
4
-14 NPT
6 Anode connection Rp
3
/
4
Dimensions in mm. All DRE water heaters receive a three years
warranty on the tank and one year on parts.
DRE 52
DRE 80
DRE 120
Vented
Unvented