Bradford-White Corp BNTH warranty 6B.3 Cold Water Make-Up, 6B.5 BNTV Suggested Piping Schematics

Page 30 BRADFORD WHITE CORP.

6B.3 Cold Water Make-Up

The cold water make-up may be connected to the tank or to the inlet of the boiler as shown in Figures 23-

26.Install back flow preventers and shut offs where needed or required by code.

6B.5 BNTV Suggested Piping Schematics

Figures 23-26show suggested piping configurations for BNTV boilers. These diagrams are only meant as a guide. All components or piping required by local code must be installed.

6B.4 Freeze Protection

Brute Elite heaters are not certified for outdoor installation, so the chance of freezing is minimized. In an event such as power outage, component failure or other issue when freezing is likely, the heater and system must be drained to avoid the risk of damage due to freezing. Glycol must NOT be used in volume water heating applications.

6B.6 BNTV Suggested Pumps

Possible pumps for BNTV sizes 600-850 are Grundfos model TP 40-160/2B, or for size 600 (only) is Armstrong model E22B. See Table 8 for water flow and head requirements.

NOTES:

1.Optional CWMU & Recirc. line location.

2.Locate BNTV DHW sensor or remote aquastat well in lower 1/3 of tank.

3.Back flow preventer may be required - check local codes.

4.Thermal expansion tank may be required - check local codes.

5.Factory mounted pumps are sized for a max pipe length of 30' total, 6-90° elbows, full pipe size.

6.Caution: Pump sizing must be based opon water hardness at job site.

WARNING: THIS DRAWING SHOWS SUGGESTED PIPING CONFIGURATION AND VALVING. CHECK WITH LOCAL CODES AND ORDINANCES FOR ADDITIONAL REQUIREMENTS.

Figure 24. DHW Piping, One Heater, Two Vertical Tanks.