Nyle e360 - Piping Installation

HeatWater.com | WaterService@nyle.com | (800) 777-6953 | Rev. IM-E360-060523 HeatWater.com | WaterService@nyle.com | (800) 777-6953 | Rev. IM-E360-060523
Installation: Water Piping
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All information in this manual is superseded by all applicable local codes
and regulations. Where codes and guidance from Nyle are in conflict,
advise Nyle or your local manufacturer’s representative of the conflict.
e-Series heat pump water heaters are designed to be piped directly to tank water
storage in a “Single-Pass” configuration ONLY. This means water is delivered at a
variable rate, at a fixed temperature, to the top of a stratified temperature storage
tank, and is pulled from the colder, bottom portion of the tank.
In order to maintain stratification, circulating loops from other sources, such as
building recirculation loops or boiler backup heat, must be handled with a separate
“swing tank”, which is fed by the heat pump storage tank during domestic hot water
demands. See the sample piping diagram for an example of this strategy.
Flow rates will vary from e-Series units depending on inlet water temperature, outlet
target water temperature, and available compressor capacity. The unit is not an on
demand water heater Storage tanks are always required.
Expansion:
All hot water systems require accommodation for fluid expansion when
heated. Ensure that expansion devices such as expansion tanks or
compression tanks are specified and sized by a qualified engineer. Failure to
properly accommodate expansion can result in equipment failure, nuisance
callbacks, injury, or death.
Water Temperature Control:
Commercial water heating is typically done at storage temperatures that are
dangerous for human contact, Nyle recommends all water heating systems
install mechanical temperature limiting devices, such as tempering valves,
between storage volumes and the building’s plumbing fixtures. Failure to
provide these safety devices can result in scalding injuries or death.
Components and Water Circuit Additives:
Use only low lead and/or NSF certified components and joining methods
suitable for potable water usage and suitable for temperatures in excess of
160 degrees fahrenheit on the water piping circuit. Only pure water or food
grade additives should ever be used within the water circuit on the heat
pump. Any other additives or contaminants in the water circuit can render it
unusable for potable water heating.
Installation: Water Piping