17
Appendix C
Low Water Cutoff
if required, install low water
cutoff(s) in the piping
anywhere above the top of
the boiler. Install in
accordance with the
manufacturer's instructions.
Supply to heating
circuits
10
Bypass
Piping
11
2
4
3
1
5
Burner
TDX-LC
6
7
8
8
Return from heating
circuits
8
6
7
1
2
4
3
Return from heating
circuits
TDX-WC
8
Burner
5
Supply to heating
circuits
Domestic
Hot Water
Coil
Hot Water Out
Dishwasher
Tempered Hot Water
Cold Water In
9
Legend
1. Circulator
2. Relief Valve
3. Expansion Tank Pressurized
4. Vent
5. Flow Check
6. Shut off valve
7. Auto Refill/Pressure reducing valve
8. Drain
9. Tempering Valve
10. Manual Bypass Valve
11. Optional Danfoss Bypass Valve
Piping Diagram
