Connect Water Piping CONTINUED 
Recommended piping for systems requiring temperatures below 140°F:
In most systems, this type of piping is not required. If system water temperature requirements are less than 140°F, such as radiant panels or converted gravity systems, use piping as shown in FIGURE 11 or 12. If system piping is plastic without an oxygen barrier, a heat exchanger must be used.
Legend:
1Isolation valve
2Flow control valve
3Circulator
4System temperature gauge
5Zone valve
6Drain valve
7System temperature valves Adjust these valves so that:
-the temperature at gauge 8 is at least 140°F
-the temperature at gauge 9 is at least 160°F
8Blend temperature gauge
9Boiler temperature gauge
Piping with CIRCULATORS | Piping with ZONE VALVES |
FIGURE 11 | FIGURE 12 |
15
