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Cold Climate Installation Considerations
15
Cold Climate Installation Considerations
e-Series heat pumps are intended to operate in cold climates. However, freeze
protection is an important part of the installation and design planning for these
installations. One option is to install the unit in freeze protected spaces and duct
them to the outside. See the Optional Ducting section of this manual for details.
For exterior installations, additional measures are required.
IMPORTANT: Cold climate outdoor installations require close
attention to the following considerations. Failure to follow these
guidelines can result in equipment failure and/or severe water
damage to the property.
The heat pump has two steps of internal freeze protection for outdoor
applications:
1. First are the onboard, active heating measures: all internal water side
components are insulated and heat traced, which activate only when water
temperatures in the unit get too close to freezing. The condensate pan
has water sensing and pan heating, which activates when water is present
in the pan during freezing conditions.
2. In the event that active heating fails to keep water temperatures above
freezing, the heat pump will run its circulator to draw heat from the
attached storage tank as an emergency measure. It is imperative that
attached piping does not prevent this fluid exchange with the storage
tanks. Attached valves and components must allow free flow between
the heat pump and storage tank at all times: solenoid valves and other
automatic shutos are not recommended.
Considerations for Exterior Applications in cold climates:
1. All water and condensate piping that is exposed to freezing temperatures
must be insulated and heat traced as per local code and/or heat tracing
manufacturer’s requirements. It is recommended that this tracing be
thermostatically activated to run as needed, not always on. Self regulating
cable is recommended.
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