Bradford-White Corp BNTV warranty 6A.3 Freeze Protection, 6A.4 BNTH Suggested Piping Schematics

Brute Elite Page 21

6A.3 Freeze Protection

WARNING

Glycol must not be used in domestic hot water applications. Refer to Section 6B.4 for instructions on BNTV, domestic hot water freeze protection.

Brute Elite units are certified for indoor use only, and are not design-certified for placement outdoors.

Proper precautions for freeze protection are recommended for boiler installations in areas where the danger of freezing exists.

Power outage, interruption of gas supply, failure of system components, activation of safety devices, etc., may prevent a boiler from firing. Any time a boiler is subjected to freezing conditions, and the boiler is not able to fire, and/or the water is not able to circulate, there is a risk of freezing in the boiler or in the pipes in the system. When water freezes, it expands which may result in bursting of pipes, or damage to the boiler, which could result in leaking or flooding conditions.

Do not use automotive antifreeze. To help prevent freezing, Bradford White recommends the use of inhibited glycol concentrations between 20% and 35% glycol. Typically, this concentration will serve as burst protection for temperatures down to approximately -5°F (-20°C). If temperatures are expected to be lower than - 5°F (-20°C), glycol concentrations up to 50% can be used. When concentrations greater than 35% are used, water flow rates must be increased to maintain a 20°F to 25°F temperature rise through the boiler. NOTE:

Bradford White supplied pumps are not all capable of maintaining the reduced temperature rise required with glycol concentrations greater than 35%. If glycol concentrations required are greater than 35% a field supplied pump should be used.

IMPORTANT NOTES: Different glycol products may provide varying degrees of protection. Glycol products must be maintained properly in a heating system, or they may become ineffective. Consult the glycol specifications, or the glycol manufacturer, for information about specific products, maintenance of solutions, and set up according to your particular conditions.

6A.4 BNTH Suggested Piping Schematics

Figures 15 through 21 show suggested piping configurations for BNTH boilers. These diagrams are only meant as a guide. All components or piping required by local code must be installed.

6A.5 Recognized Chemicals

The following manufacturers offer glycols,

inhibitors, and anti foamants that are suitable for use in the Brute Elite. Please refer to the manufacturers instructions for proper selection and application.

1.Sentinel Performance Solutions Group

2.Hercules Chemical Company

3.Dow Chemical Company