Application | Well Water |
Considerations | Systems |
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3 | 2 | Figure 11: Well water installation |
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General
A well water application involves an open loop water supply. The water is drawn from an open well or pond into the unit. A straining device is required with this application.
Similar to the closed loop design, an open water supply usually remains at a constant temperature year round utilizing maximum efficiency in unit design.
See Figure 11 for open well water installation.
Well Water
Application
Ball valves should be installed in the supply and return lines for unit isolation and unit water flow rate balancing (if auto- matic flow device is not selected). This connection, along with hoses, are also rec- ommended for backflushing and chemical cleaning of the evaporator and the condenser.
Flexible hoses may be used to connect the water supply and return lines to the water inlets and outlets. These hoses reduce possible vibration between the unit and the rigid system.
Note: Hoses and or pipes should be braided stainless steel, and sized suitable for the system’s water pressure and flow rate.
Load side connections are used to supply the terminal device.
The sound attenuation pad should be slightly oversized for the unit. This field supplied product is recommended for sound absorption of unit.
The low voltage control con- nection provided on the unit is large enough for attaching con- duit.
The expansion tank should be sized to maintain pressure on the system.
The line voltage disconnect should be installed for branch circuit protection. The unit is supplied with an opening for attaching conduit.
The water regulating valve assembly is used to maintain refrigerant pressure in refriger- ant circuit as the entering water temperature varies or is cooler than ideal.
Schrader connections are factory installed for ease of attaching the water regulating valve assembly.
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