Econergy Installation Manual Rev G 240914
© Hot Water Heat Pumps Ltd 2018
12/03/2018
www.econergy.co.nz
7
Heat Pump Water Heater Installation Guide
A)
New construction
We recommend Econergy
®
heat pump ready hot water cylinders. Available
in mains pressure stainless steel, these contain dual 20mm inlet fittings,
dedicated 20m return fittings and dual sensors integrated into the tank. They
are guaranteed from the factory with a 10 year warranty. Use of Econergy
®
heat pump ready cylinders avoids any potential warranty issues resulting
from modification to fit sensor pockets.
B)
Retrofit
Retrofit can be made to any electric hot water cylinder with PU or EPS in
good condition by teeing into the cold water line just before the tank isolation
valve and by fitting a tank outlet fitting (code HPTP) into the hot water outlet
line. It is recommended not to fit a pressure relief valve to an old LP cylinder
as this could cause leaks.
The Econergy cannot be retrofitted to gas
hot water cylinders, or any storage tank that
cannot deliver more than 50kPa pressure to
the pump inlet.
!