41
W
ater Circuit Installation
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WATER CIRCUIT INSTALLATION
Design Steps
The Multi V Water Mini unit will require a water cooling / heating source. This year-round heating and cooling system will use a two (2) pipe
closed loop water circuit which circulates water continuously and maintains water temperature between 50°F and 113°F for cooling mode,
23°F and 113°F for heating mode. See capacity tables provided in the Multi V Water Mini Engineering Manual for performance at different
entering water temperatures. At the high end of this temperature range, heat is rejected through a cooling tower (dry cooler or geothermal
well), while at the low end of the temperature range an auxiliary heat source like a boiler, solar panel, or geothermal well adds heat.
Piping, pumps, and accessories shall be sized to provide adequate water flow to the water cooled unit based on nominal flow rates listed per
model number.
Design Schematic
The Multi V Water Mini units have factory installed stainless steel plate heat exchangers. In order to protect these heat exchangers, it is
recommended to use closed cooling towers. If open cooling towers or other open loop systems are used, an intermediate heat exchanger
should be added to protect the water cooled unit from contaminants and debris in the water system that may foul or clog the heat exchanger.
Open loop systems without an intermediate heat exchanger are not recommended due to risk of freezing, reduction of flow due to scaling or
clogging, or other potential problems caused by improper water quality.
Figure 41: Cooling Cycle Diagram.
Water Circuit Design
Figure 42: Heating Cycle Diagram.