Smart 40 Indirect Water Heater Manual

661A0300 - Rev B
7
Cold Water
Inlet
6
1
R
ecirculating
Loop
2
3
4
1
5
5
1
8
12" min.
Heat Trap
Loop
(Optional)
12" min.
Heat Trap
Loop
(Optional)
Optional Installation
Domestic Piping with
Recirculation SMART Series
1. Shut-off valve
2. Recirculation Circulator
3. Flow Check Valve
4. T&P relief valve
5. Unions
6. Backflow preventer or pressure reducing valve(*)
7. Drain valve
8. Thermal expansion tank (potable)
(*) Optional devices may be required by local codes.
Fig. 3:
9
Installation - Piping
Smart manual_Smart manual 10/29/14 10:00 AM Page 11