Geothermal controller HBX Control Systems’ ECO-0550 standalone outdoor reset control can accommodate heat pumps and backup boilers. It features up to three stages, including backup; outdoor reset on hot and cold tanks; and single or dual tank modes. It runs reversing valves and/or three-way valves and can rotate heat pumps based on time or cycles.
Hybrid system RadiantLink’s closed-loop system uses a residential furnace as the heat source for supplementary basement and garage radiant floor heating. The system includes a furnace-coil plenum and a wall-mounted control panel that includes a circulation pump, expansion tank, air vent and system fill valve. A multi-row fin-tube coil mounted horizontally at the top of the plenum uses supply air from the furnace to heat a glycol solution flowing through the tubes.
Rinnai’s E50C condensing combination boiler offers efficiencies up to 95.6% AFUE and has an input range of 13,600 to 50,000 BTUH. The units require a minimum gas pressure of a 3” W.C. and operate on propane or natural gas. They are compatible with a 1/2” gas line.
A maintenance program that includes scheduled inspections and cleanings is essential to maintaining the efﬁciency of a boiler, and can go a long way towards keeping fuel costs low.
Pipe fusion McElroy’s Pit Bull 26 fusion machine is designed to butt fuse 160 mm polypropylene-random (PP-R) pipe, as well as smaller pipes down to 63 mm in diameter. The unit features a centreline guidance system and a semi-automatic locking cam system that maintains force during the cooling cycle.
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Balancing valve The 132 series QuickSetter+ manual balancing valve from Caleffi features a built-in flow meter and sight gauge. The valve is constructed from low-lead brass with a stainless steel flow adjuster. It is available in 1/2”, 3/4” and 1” connection sizes. Flow range options include 0.5 to 1.75 gpm or 2.0 to 7.0 gpm.
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HVAC on the Lake with Bob Izumi