Bradford-White Corp Modulating Boiler, BNTH 6B.1 BNTV Water Quality, 6B.2 Piping Requirements

Brute Elite Page 29

SECTION 6B.

Water Connections - BNTV Water Heater

Section 6 is divided into two parts. The first is for BNTH models and is Section 6A. The second is for BNTV models and is Section 6B. Refer to the proper section for instructions in installing and piping your product. Refer to Table 9 for pipe sizes required.

6B.1 BNTV Water Quality

BNTV water heaters must be installed in water conditions of 10gpg hardness or less with a pH range of

8.2to 9.5. Operating the BNTV in water with higher hardness levels will cause heat exchanger fouling, erosion, or corrosion leading to premature component failure, reduced efficiency, heat exchanger failure or system failure. Failure of this type will not be warranted. If the water in use exceeds the conditions recommended water softeners or other devices should be installed to improve water quality.

6B.2 Piping Requirements

Water piping should be supported by suitable

hangers and floor stands. Do not support piping with the appliance. Due to expansion and contraction of copper pipe, consideration should be given to the type of hangers and supports used. Rigid hangers may transmit noise through the system resulting from piping sliding in the hangers. It is recommended that padding be used when rigid hangers are installed. Maintain 1" (2.5cm) clearance to combustibles for hot water pipes.

Pipe the discharge of the relief valve (full size) to the drain or in a manner to prevent injury in the event of pressure relief. Install a diaphragm-type expansion tank, flow check, and shutoff valves where needed or as required by code.

Brute Elite 80-500 can be ordered with pumps. Whether the factory pumps or other pumps are installed the piping should be installed such that the pump supplies flow to the heater it is attached to only. The factory pumps are sized for 30 feet and 6 elbows of total pipe length, so the heater should be placed within 15 feet of the tank. If longer runs are required, properly- sized field-supplied pumps should be used.

WARNING: THIS DRAWING SHOWS

SUGGESTED PIPING CONFIGURATION AND

VALVING. CHECK WITH LOCAL CODES AND

ORDINANCES FOR ADDITIONAL 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.

Figure 23. DHW Piping, One Heater, One Vertical Tank.