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Houseneeds Hydronic Heating and Solar Assist Combo System
With Takagi T-D2-IN and Stainless Steel Indirect Storage Tank (with 2 Heat Exchangers)
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This Hydronic Heating Combo Package with Solar Assist is perfect for small heating
loads with Domestic Hot Water.
This Solar Assist / Heating Combo Package is designed for Solar Hot Water Applications and
our Indirect Storage Tank comes with two heat exchangers. The top heat exchanger is for the
back up heat souce, which in this case is a Takagi T-D2-IN Gas Tankless Water heater. The bottom
heat exchanger is connected to solar panels or Solar Evacuated Tubes. In addition, this tank
has 80 gallons of storage so it can handle 2 flat panels or 30 Solar Evacuated Tubes or so. Please
note: The more panels or tubes - the more storage water you will need.
Our Combo Package used a stainless steel tank for two reasons.
First, the tank acts as a buffer tank and keeps the Takagi T-D2-IN from short cycling. This allows the
Takagi to run more efficiently and last longer.
Secondly, the Stainless Steel Heat-Flo Tank will outlast
steel tanks and with it's heating coil - the Domestic Hot Water and Heating Water never mix.
This is called a closed-loop heating system. The Domestic Water comes from the tank - and the Heating Loop
goes through the internal Heat Exchanger. Simple - Elegant - Economical!
How it works
The Heating Side of our Hydronic Heating Combo Solar Assist Package will give you up to
40,000 Btu for heating side at water tempertaures of 180 ° or lower. As for the Domestic
Hot Water you will have 80 gallons of hot water storage and the Takagi T-D2-IN will recover with nearly
90,000 Btu's.
The Solar side will give you as much as the panels or Evacuated Tubes can deliver - in most cases typical
2 panel / 40 tube array will give you from 40,000 to 60,000 Btu's during a typical sunny warm day. This is
generally enough hot water for a typical family of 2 to 4 people with the Takagi T-D2-IN filling in when
the solar can't generate enough hot water
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Hydronic Heating Combo with Solar Assist Package includes:
Heating Source, Indirect Storage Tank and Heating Trim
- One - Takagi Tankless Water Heater T-D2-IN with Direct Vent Kit TV-10 and Pressure Valve (Propane Gas or Natural Gas)
- One - Cold Climate 2 Venting Kit - 2 x 2SVEPWCF0412, 2SVEEWCF0490, 2SVSWTF04, hood 2SVSHTX04, hood 2SVSHTX03, 2SVSNA04, flex pipe ITLXXXX0310, 2 x 7HS44XX, TK-BF01
- One - Takagi - Back Draft Preventer - TK-BF01
- One - Heat-Flo 316 Stainless Steel Indirect Water Heater Tank with double heat exchanger - 80 Gallons - HF-80-D
- One - Ball Valve 3/4 inch with Sweat Connection - 51703
- One - Taco Bronze Flow Check - Solder/Sweat - 3/4" - Taco 219-4
- One - Taco Pump - Stainless Steel Circulating Pump - 009-SF5
- One - Webstone 3/4 inch Brass Shut Off Flange Set With Ball Valves and Drain, 4 inch Lever Handles and Sweat Connections, Item #50413
- One - 3/4 inch boiler drain - Model T-521 - 107144
- One - Johnson Controls - 120/240 volt Single Stage Digital Temperature Control -30/212F- Model # A419ABC-1C
- Four - Super Strut Cushion Clamp for 3/4 inch copper pipe - BVT087YZN/781011 58035
- Four - Super Strut 1-5/16 inch by 1-5/16 inch by 4 inch length 781011 22230
- One - Caleffi 3-Way Thermostatic Mixing Valve - 3/4 Inch Sweat - Lead Free - 521509A
Heating Side Trim
- One - Ball Valve 1/2 inch with Sweat Connection - 51702
- One - Webstone Ball Valve 3/4 inch with Sweat Connection - 51703
- One - Webstone Ball Valve 3/4 inch C X C X Hi Flow hose drain - 50613
- One - Caleffi 1/2 inch SW BFP/AutoFill 1/2 inch NPT Female Outlet - 573009A
- One - Caleffi Discal Air Separator 1 inch Sweat - 551028A
- One - Cash Acme Hydronic Heating Expansion Tank T30 - Model T30
- One - Winters Tridicator 1/4 inch NPT, 1/4 inch Stem - 404
- One - Copper Adapter 1/2 inch C x 1/4 inch FIP - C75-127
- One - Cash Acme F-30 3/4 inch pressure relief valve 30 lb setting only - 20166-0030
- Two - Temperature Gauge with 3/4 inch sweat well Model J40-702
See other Boiler Choices:
Combi Boilers: view all Combi Gas Boilers & Combi Propane Boilers
Combination Boilers: view all Combination Gas Boilers & Combination Propane Boilers
Condensing Boilers: view all Condensing Gas Boilers & Condensing Propane Boilers
Non Condensing Boilers: view all Non Condensing Gas Hot Water Boilers
Oil Fired Boilers: view all Oil Heating Boilers & Oil Boiler
Electric Boilers: view all Electrical Heating Boilers
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Hydronic Heating Combo / Solar System Specs / Techs
Tankless Water Heating Trim Kits
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