HTP PHR199-55C - Manual (Page 29)

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LP- 325 REV. 3.21.14
P. DHW PIPING WITH THE VERSA-FLAME
Figure 10 – Versa-Flame Standard Installation
NOTES:
1. This drawing is meant to show system piping concept only.
Installer is responsible for all equipment & detailing required by local codes.
2. A mixing valve is recommended if the DHW temperature is set above the factory setting of 119°F.
3. Install a minimum of 12 diameters of straight pipe upstream of all circulators.
4. A pressure relief valve or T&P valve may be required. Check with local codes.
5. This drawing refers to DHW piping only. For Central Heating piping, please refer to Part 5, Section L.
6. Winterization: When winterizing, pump a small amount of food grade glycol, FDA rated as GRAS (Generally Recognized As Safe) into the brazed
plate heat exchanger.
7. In Massachusetts, a vacuum relief valve must be installed on the cold water line per 248 CMR.
8. If a backflow preventer or no return valve is installed, a thermal expansion tank is required on the cold water inlet between the water heating appliance
and the backflow preventer.