Rev
3 7/18
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SolarCon solar water heater tank
NAS200 Series
Installation, commissioning and servicing instructions
Function
The solar water heater is designed with an internal coil and backup
electric heating element. A heating medium is passed through the
solar panels and internal coil as long as there is an adequate
temperature difference between the heating medium and stored water
in the tank. The internal coil is located as close to the bottom as
possible to facilitate the transfer of heat even at lower solar panel
temperatures.
During periods of water flow through the water heater, hot water is
drawn from the top of the heater and cold water is delivered to the
bottom of the tank (by a dip tube or bottom inlet). If the hot water
demand should exceed the solar heat input or there is an insufficient
temperature difference between the heating medium and stored
water, the heating element thermostat will activate the electrical
heating element for backup heat or boiler backup top coil.
Solar heat output from the internal coil will vary depending on outside
conditions and the temperature of the stored water.
Models:
NAS20053 Tank 50 gallon with lower coil and back up electric element
NAS20083 Tank 80 gallon with lower coil and back up electric element
NAS20123 Tank 119 gallon with lower coil and back up electric element
NAS20082 Tank 80 gallon with lower coil and top coil for boiler back up
NAS20122 Tank 119 gallon with lower coil and top coil for boiler back up
Power requirements:
240 VAC
Power consumption:
4.5 KW
Agency approval
UL listed
REV1 8/08
Technical characteristics
Tank materials:
porcelain coated steel
Tank insulation:
2” non-CFC foam
Tank external cover:
powder-coated steel (20-24 ga.)
Anode rods:
2 each magnesium
Internal heat exchanger coil (lower):
1-1/2” x 30’ (50 gallon)
1-1/2” x 36’ (80, 119 gallon)
Internal heat exchanger coil (top):
1-1/2” x 24’
Maximum working pressure:
150 psi
Testing pressure:
300 psi
Recommended maximum hot water temperature
120°F
Temperature and pressure relief valve
210°F/150 psi max
23500.0
3
Insulation thermal conductivity:
R14
Содержание NAS200 Series
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