Bryan Boilers Triple-Flex High Efficiency Boilers & 300 - Manual (Page 10)

Date: 8-4-2010
Revision: 0
Form: 2396
valve shall be tested for leaks.
1.4.9 V
ENTING
O
F
G
AS
T
RAIN
C
OMPONENTS
Figure 2 Main Gas Inlet Connection
Normally open vent valves (when supplied) -
These valves must be piped to outdoors using
pipe no smaller than that of the valve.
Gas pressure switches – All gas pressure
switches provided are of the VENTLESS type
and do not require venting to atmosphere.
Gas pilot pressure regulator – A vent limiter for
the pilot pressure regulator is provided
eliminating the need to run a vent line to
atmosphere.
NOTE:
Do not use Teflon tape for threaded joints in gas
piping.
1.5 E
LECTRICAL
R
EQUIREMENTS
WARNING:
All electrical connections must
conform to the National Electrical
Code and to all other applicable State
and Local Codes. See boiler wiring
diagram and equipment list for specific
voltage requirements.
Model TF300/250 TF200/150
200 V – 240 V / 60 Hz / 3 Ph
Blower Motor
KW (HP)
3 (4.02) N/A
Full Load
Amps 1
15.6 N/A
Service Fuse (3) 20 Amp N/A
400 V – 480V / 60 Hz / 3 Ph
Blower Motor
KW (HP)
N/A N/A
Full Load
Amps 1
N/A N/A
Service Fuse N/A N/A
200 V – 240 V / 60 Hz / 1 Ph
Blower Motor
KW (HP)
N/A 1.05 (1.41)
Full Load
Amps 1
N/A 6
Service Fuse N/A (2) 7 Amp
Table 2 Electrical Requirements
Equipment Grounding
The boiler must be grounded in accordance with
the current American National Standard
Electrical Code, ANSI/NFPA #70.
1.6 C
OMBUSTION
A
IR
S
UPPLY
Combustion Air:
For proper combustion it is necessary to provide
the boiler room with appropriate openings for
fresh air supply. Temporary air intakes such as
windows and doors should be avoided since
they may be closed. In addition to air needed
for combustion, sufficient air must be supplied
for ventilation as well as other air consuming
equipment that may be present in the boiler
room. Often when personnel are working in the
boiler room, combustion air openings are closed
due to the temperature of the outside air. THIS
MUST BE AVOIDED AT ALL COSTS!
Provisions should be made to heat the outside
combustion air, if necessary, for personnel
comfort.
Positive means for supplying an ample amount
of outside air, allowing for the complete
combustion of the gas, must be provided.
Movable combustion air dampers, automatic or
manually adjustable, must be electrically
4
1 Full load Amps include blower and control
circuit.