Installing a Heat Pump - Tips & Tricks
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Here is one of the inquires we have received from the visitor
the American heat pump water heaters...
I've just bought the electric heat pump made by the American
Water Heater Company and planning to install it by myself. The
electrical part of the water heater and its connection to the grid
won't be a problem. The questions are related to the plumbing:
what connections do you recommend, which safety valves to install and
are there any tips and tricks to consider?
of the important things to consider when
installing the American heat pump is the location, because once
corroded and leaked water tank, incorrect plumbing and connections,
burst pipes and condensation might lead to flooding and damages.
Recommendation is to install the heat pump not above but below the main
floor, such as the basement or garage. The installation of the drain
pan under the water heater is strongly recommended.
Before installation, check the water pressure coming from the main
supply, it should be around 50 psi; and if the pressure is
install the pressure reducing valve.
Cold and hot water supplies must be connected properly to its
corresponding cold and hot fittings. For easy and fast connections and
removal, install the unions on both sides.
In order to prevent any scalding burns from the hot water - kids are
especially effected - install the anti-scald mixing valve so the output
hot water temperature is always under control with the temperatures
you have set it up. The anti-scald mixing valve reduces the temperature
of the exiting water by mixing both cold and hot water. Recommended
valve types is full flow ball, not the one that can cause an excessive
water flow restriction.
For an easy service of the water heater, the shut off valve on the cold
line and close to the water heater is recommended. If the heating
system is closed, the expansion tank must be installed on the cold
water line, and used to protect the system from the excessive water
The temperature and pressure relief valve as the safety element might
open from time to time to reduce the build-up pressure inside the water
heater, so the drain line should be connected and terminate at the
When selecting the piping, use only types that are suitable for potable
water: PEX tubes, polybutylene, CPVC, not iron or PVC types. Also
fittings and valves must be also suitable for potable water. Any
to the freezing temperatures should be insulated.
And the last, any work must be done per codes and manufacturer
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Picture is courtesy of American Water Heating