Sisters, Oregon
Phase one of this project was installing a complete power system as well as low voltage water system.  Phase two included a 2,700 ft² off grid residence equipped with solar hot water and a radiant floor.  Cascade Sun Works, Inc. was the heating and solar contractor for this project.  Also included was the installation of two 10" Natural Light Tubular Skylights.

This open loop radiant floor system uses a propane Takagi T-K2 Instantaneous Hot Water Heater as the heat source driving through a secondary loop manifold system that includes an outdoor reset for energy conservation.  Mixing is through a Wirsbo controller and a 4-way mixing valve.  Wirsbo TruFLOW series manifolds were installed for the various zones throughout the house.

The Solar Hot Water system is comprised of a Heliodyne Gobi 410 collector and an HP-16 heat exchanger coupled to an 80 gallon storage tank.  The solar system pre-feeds the Takagi for domestic hot water.  When solar resources are available, they supplement the radiant floor system.  This system qualified for the State of Oregon Solar Hot Water Tax Credit.

Click on any photo for a larger view Phase Two showing Residence Wirsbo PEX tubing installed in the bedroom Living Room Tubing Layout Kitchen Area Wirsbo TruFLOW 8 Loop Manifold All projects must maintain priorities Solar Hot Water System and Takagio being installed Solar Hot Water and Radiant Heating System Heliodyne Gobi 410 Collector with Natural Light Tubular Skylights Solar Hot Water shown on roof, previously installed photovoltaic panels shown on top of pole mount. Tubing is covered with 1 1/2" Gypcrete Showing the solar hot water heater, Takagi T-K2 (center), Radiant control and distribution manifold with system controls mounted above right. . Phase Two showing Residence Solar Hot Water shown on roof, previously installed photovoltaic panels shown on top of pole mount. Click here to see Phase 1 of this project - Power and Water