14
Chart 7: Valiant FT 399 kBtu/h; Flow vs Pressure Drop
2.4.8 PUMP SELECTION
Table 11 below may be used to help with pump selection.
Model
B&G
Grundfos
Armstrong
80
NRF-22
UPS15-58
Astro 30
110
NRF-22
UPS15-58
Astro 30
155
NRF-22
UPS15-58
Astro 30
199
NRF-36 UPS26-99FC
E7
250
NRF-36 UPS26-99FC
E7
299
NRF-36 UPS26-99FC
E7
399
NRF-36 UPS26-99FC
E8
Table 11: Valiant FT Minimum Flow
Pump curves from the pump manufacturers should be
utilized and compared with the pressure drop chart of the
specific model on hand, taking into account the
∆
T required,
for proper sizing of the pump.
2.4.9 WATER QUALITY
The water quality has an impact on the life as well as
performance of the ValiantFT heat exchanger. Good water
quality in the system will help limit the effects of scale
buildup and corrosion and is key in prolonging the life of the
heat exchanger.
Water quality testing should be conducted prior to installing
this appliance. It is also recommended to flush the entire
system to prevent any sediments, debris or any other
impurities from ending up inside and harming the appliance.
The water quality must fall within the following parameters:
Acidity
6.6 < pH < 8.5
Conductivity
Less than 400 µS/cm (at 25
o
C)
Chloride
Less than 125 ppm
Iron
Less than 0.5 ppm
Copper
Less than 0.1 ppm
Total Dissolved Solids
Less than 200 ppm
Total Hardness
Less than 11.6 grains/USgal
2.5
ELECTRICAL CONNECTIONS
2.5.1 Minimum Power Requirements
Model
Voltage
Requirement
Full Load
Amps
[Amperes]
Maximum
Over
Protection
[Amperes]
80
115VAC,
60Hz, Single
Phase
4
15
110
4
15
155
4
15
199
4
15
250
4
15
299
4
15
399
4
15
Table 12: Minimum Power Requirements
The appliance, when installed, must be electrically
grounded in accordance with the requirements of the
authority having jurisdiction or in the absence of such
requirements, with the latest edition of the National
Electrical Code ANSI/NFPA No. 70. When the unit is
installed in Canada, it must conform to the Canadian
Electrical Code, C22.1, Part 1 and/or local Electrical Codes.
All wiring between the appliance and field installed devices
shall be made with wire having minimum 220ºF (105ºC)
rating. Line voltage wire external to the appliance must be
enclosed in approved conduit or approved metal clad cable.
To avoid serious damage,
DO NOT ENERGIZE
the
appliance until the system is full of water. Ensure that all air
is removed from the pump housing and piping before
beginning initial operation. Provide the appliance with
proper overload protection.
BLOWER MOTOR
The Valiant FT uses a 120V/1PH electrical supply to power
the blower motor. On ignition, after safety checks are
complete, the blower is provided with a signal to operate at
soft start level for burner ignition. After main burner ignition
is established, the motor receives a modulating signal from
the control corresponding to the rate of modulation
necessary.
WARNING
THIS PRODUCT MUSY BE PROPERLY
GROUNDED BEFORE ANY ELECTRIC CURRENT
IS APPLIED TO THE BLOWER OR CONTROLS!
Summary of Contents for Valiant FT VA0080
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Page 62: ...55 Figure 41 Multiple Boiler Hydronic Heating Zoned Piping...
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Page 73: ...66 11 0 WIRING DIAGRAM...
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