Ohio Contractor “This system has more that cut my utility costs in
Continued from page 38
half,” said Johnston. “I’m paying a lot less for utilities now, with double the square footage. I didn’t have AC before, and I’m still paying less!” The ClimateMaster systems that Lakes installed in
Light commercial, with a twist In the past year, Lakes technicians have taken on two
unique light commercial projects, each with a very dif- ferent set of challenges. Mushroom Shack, a startup company in Akron, Ohio,
asked Lakes for help with the climate control system for their “grow room” or mushroom house. Although the building was only 550 square feet, the control require- ments were daunting. To grow mushrooms, indoor humidity would need to be exactly 95 percent, 100 per- cent of the time. The owner didn’t want to spend the money for an
ERV system but demanded nearly two air changes per hour. A high-performance HEPA filter was needed to make sure that there was no risk of contamination from the fresh air. To simulate night and day, temperature would need to fluctuate from 68 to 85 degrees. Otherwise, the fungi won’t fruit. “We installed a two-ton split system with an electric
The ClimateMaster systems that Lakes installed have all the bells and whistles. Both have desuperheaters and they also incorporated ClimateMaster’s ClimaDry dehumidifica- tion system.
Johnston’s home have all the bells and whistles. Both have desuperheaters and are connected to two 80-gallon Bradford White electric water heaters. They also incor- porated ClimateMaster’s ClimaDry dehumidification system. Because the home is completely surrounded by hardwood forest, indoor humidity is a key concern. “No other ground-source heat pump manufacturer has anything like the ClimaDry system,” said Brian Jr. It’s hot gas generated reheat, which uses one of the biggest advantages of a water source heat pump, the transfer of energy through the water piping system. ClimaDry diverts condenser water through a water-to-air coil placed after the evaporator coil. If condenser water isn’t warm enough, the internal “run-around” loop increases the water temperature with each pass through the con- denser coil. The exchange field consisted of four bore holes. The
larger unit uses two; one is 225 feet and the other is 235. The smaller unit is connected to a 150-foot hole and a 160-foot hole. “Yoder Geothermal, out of Sugarcreek, Ohio, is our
drilling sub,” said Brian Jr. Depending on the applica- tion, Yoder trenches or drills the exchange field and fuses the piping back into the house. For vertical instal- lations, all bore holes are filled with bentonite grout. “We’ve used ClimateMaster heat pumps exclusively
for the past 10 years. Dave Meadows is our inside sales manager at Virginia Air Distributors. He introduced us to the systems and has been great to deal with ever since. We also work with Mike Murphy, ClimateMaster’s southeast sales rep. He’s a wealth of information too. Together, they’ve enabled us to tackle some challenging installations.”
Page 40/Plumbing Engineer A tech installs a ClimateMaster heat pump.
age capacity, Lakes was hired to keep indoor air quality conditions at optimal levels. Inside an existing ware- house, a super-insulated structure was built as a seed vault. The walls were two-by-eight construction with a heavy rubber vapor barrier. “At any given time, there’s a million dollars worth of
seeds in the vault,” said Miller, “and they’re extremely sensitive to atmospheric conditions.”
Continued on page 42 October 2011
heat strip for the building,” said Lakes sales manager Brad Miller. “Cooling and ventilation are the main needs, since mushrooms produce heat and carbon diox- ide through their metabolic process.” The heat strip serves as back-up heat for the dead of
winter and is still unused. A 33-gallon-per-hour steam humidifier was installed to keep the building moisture- rich. This, of course, created another challenge. “We needed to use poly duct because of the risk of rust,” said Miller. The collars were all coated with a waterproof paint, and the registers are aluminum. On the opposite end of the dew-point spectrum, when Canton Seed Company needed to expand their seed stor-
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