TriangleTube Smart Line Installation And Maintenance Manual page 11

Recirculating
Loop
Fig. 2A: 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
3
2
4
1
5
12" min.
Heat Trap
Loop
(Optional)
6. Backflow preventer or pressure reducing valve(*)
7. Drain valve
8. Thermal expansion tank (potable)
(*) Optional devices may be required by local codes.
9
12" min.
Heat Trap
Loop
(Optional)
1 1
6
5
8
7
Cold Water
Inlet