TriangleTube Delta - Page 27

21
Primary Piping
8
9
Cold
Water
Fill
9
5
5
3
6
7
4
9
9
4
4
12
12
9
9
9
9
3
5
1
1
2
4
9
9
3
5
2
4
Note
2 & 3
12
12
1. Modulating Delta
2. Pressure Relief Valve
3. Automatic Air Vent
4. Drain/Purge Valve 5. Circulator
6. Air Separator
7. Expansion Tank - Diaphragm
8. Automatic Fill Valve
9. Isolation Valve
10. Zone Valve
11. Bypass Valve 12. Flow Check Valve
Notes: 1. Install a minimum of 12
straight pipe diameters upstream of all circula-
tors.
2. Install closely spaced
tees a maximum of 4
pipe diameters center to
center
3. Install a minimum of 6
straight pipe diameters upstream and down
stream of closely spaced
tees.
Fig. 10: Primary Piping - Zoning with Circulators - Multiple Appliances