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  • Houseneeds Solar Hydronic Heating Combo Package for Solar Assisted Space Heating and Domestic Hot Water - Natural Gas - HNSH-NG-SolarAssist

    Product ID • HNHSCOMBO8NG

  • $4,799.75
  • Quantity:
  • Estimated Overland Truck Shipping Truck Shipping


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 TK-510U-I 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 TK-510U-I 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 degrees 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 TK-510U-I filling in when the solar can't generate enough hot water.


Hydronic Heating Combo with Solar Assist Package includes:

Heating Source, Indirect Storage Tank and Heating Trim

One - Takagi Tankless Water Heater TK-510U-I

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

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