HTP PHR199-55C - Manual (Page 22)

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LP- 325 REV. 3.21.14
L. CENTRAL HEATING PIPING DETAIL
Figure 4 –Central Heating Detail – LP-325-F
NOTES:
1. This drawing is meant to show system piping concept only.
Installer is responsible for all equipment & detailing required by local codes.
2. The minimum pipe size for connecting a SuperStor Ultra Indirect Water Appliance is 1-inch.
3. The minimum pipe size for connecting the appliance is 1.25-inch
4. Circulators are shown with isolation flanges and integral check valves. The alternative is standard flanges with full port ball valves and a separate flow
check valve. Purge valves can be used with the circulator flanges as an alternative.
5. The anti-scald mixing valve is recommended if the DHW temperature is set above the factory setting of 119°F.
6. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
7. Winterization: When winterizing, put a drain valve on both the supply and return between the union and the shut-off connection.