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Heat-Flo Single Heat Exchanger
Indirect Storage Hot Water Tank Tech and Specs
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What is an indirect water heater?
An indirect is a storage tank with a heating coil built inside the tank. Hot water from any hydronic
heating boiler is circulated through the coil inside to heat all the water in the tank. The unit is
piped like any other heating zone.
The Heat-Flo stainless steel indirect water heater is ideal for use with any hydronic, radiant heat
and solar heating system.
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HF-30
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HF-40
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HF-40 (low)
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HF-50
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HF-60
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HF-60 (low)
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HF-80
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HF-115
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Capacity (gal)
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30
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40
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40
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50
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60
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60
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80
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115
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Min Boiler Water Flow Through Coil (gpm)
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10
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10
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10
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10
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10
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10
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10
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10
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Pressure Drop Through Coil (in feet)
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3.4
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3.5
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3.5
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3.6
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3.9
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3.9
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3.9
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3.9
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Coil Heating Surface (sq.feet)
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7.1
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7.4
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7.4
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8.0
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8.3
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8.3
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8.3
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8.7
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Max Working Pressure (psi feet)
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150 psi
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150 psi
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150 psi
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150 psi
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150 psi
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150 psi
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150 psi
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150 psi
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Boiler Output (Btu/hr)
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117,500
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124,500
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123,000
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124,500
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139,700
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136,500
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139,700
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139,700
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Output (gal) *
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First Hour
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244
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266
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265
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289
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312
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306
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330
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365
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Continuous
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217
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230
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227
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244
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258
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252
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258
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265
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Connections (inch)
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Domestic - NPT
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3/4"
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3/4"
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3/4"
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3/4"
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3/4"
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3/4"
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1"
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1"
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Boiler - NPT
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1"
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1"
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1"
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1"
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1"
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1"
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1"
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1"
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Dimensions (inch)
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Diameter
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22.5
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22.5
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26.5
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22.5
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22.5
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26.5
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26.5
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26.5
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Height
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32.0
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42.0
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34.0
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52.0
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60.0
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44.0
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54.0
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72.0
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Shipping Weight (lbs)
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85
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100
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100
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110
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125
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120
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139
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175
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* Based on a 200 degree boiler water supply and a 50 degree cold water input.
Heat-Flo Single Heat Exchanger Indirect Tanks Features and Benefits:
- Tanks and coils are all stainless steel construction
- Large smooth wall coils deliver full output for years. No finned tubing to collect lime and sediment
- Includes over 2” of insulation, less than 1°/hr. heat loss, and a flexible thermoplastic jacket that will not dent or corrode
- All connections are on top for a neat, clean installation
- Brass drain and relief valves are factory installed
- Honeywell 4006 aquastat control is standard
- Limited lifetime warranty residential installations 5 years commercial
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Heat-Flo Single Heat Exchanger
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Heat Flo Hot Water Storage Tanks PDF Manuals and Brochures - Click Here
