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Brute
B
TM
RUTE. BOILERS AND VOLUME WATER HEATERS, 1,000 & 1,200 MBTU/h
operation. It does not have an operating water
level and must be full at all times. In accordance
with ANSI/ASME CSD-1 Section CW-210 and The
National Fuel Gas Code ANSI Z223.1/NFPA 54
Section 10.3.5 a water tube boiler shall have a water
flow proving device in lieu of a Low Water Cut Off.
6A.3 NTH Freeze Protection
Glycol must not be used in domestic hot water
applications. Refer to Section 6B.4 for instructions
on freeze protection for NTV units (domestic hot
water).
Brute's may be installed indoors or outdoors. If
installed outdoors, the NTH unit must never be
installed in a location which may experience freezing
temperatures. If installed indoors, and there is an
event such as a power outage, interruption of gas
supply, failure of system components, activation of
safety devices, etc., this 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. This may
result in bursting of pipes, or damage to the boiler,
and this 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.
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.
The following manufacturers offer glycols, inhibitors,
and anti foamants that are suitable for use in the
Brute. Please refer to the manufacturers instructions
WARNING
for proper selection and application.
•
Sentinel Performance Solutions Group
•
Hercules Chemical Company
•
Dow Chemical Company
6A.4 NTH Suggested Piping Schematics
Figure 11 through Figure 14 (the next several
pages) show suggested piping configurations for
NTH boilers. These diagrams are only meant as
guides. All components or piping required by local
code must be installed.
6A.5
Condensate Drain Trap
A condensate drain trap is included with the Brute
and is designed to drain the boiler of condensate.
The vent condensate should be drained through
a drain tee located in the vent line. This will help
prevent excessive condensate from entering the
boiler condensate trap and preventing the boiler
from operating.
Connect a 3/4" PVC pipe between the drain
connection and a floor drain (or condensate pump if
a floor drain is not accessible).
The condensate drain must be installed to
prevent the accumulation of condensate. When
a condensate pump is not used, the tubing must
continuously slope downward toward the drain with
no spiraling.
Consult local codes for the disposal method.
Caution
Condensate is mildly acidic (pH=5), and may
harm some floor drains and/or pipes, particularly
those that are metal. Ensure that the drain,
drainpipe, and anything that will come in
contact with the condensate can withstand the
acidity, or neutralize the condensate before
disposal. Damage caused by failure to
install a neutralizer kit or to adequately treat
condensate will not be the manufacturer's
responsibility.
Page 19
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