Econergy Installation Manual Rev G 240914
© Hot Water Heat Pumps Ltd 2018
12/03/2018
www.econergy.co.nz
18
Heat Pump Water Heater Installation Guide
3. Plumb Water Heater to Hot Water Cylinder
Plumb the water heater unit in accordance with the correct piping diagram
to match the type of cylinder being connected to. Ensure inlet (blue) of heat
pump is connected to bottom of HWC and outlet (red) of water heater is
plumbed to top of the HWC. All plumbing to be carried out in accordance with
AS/NZS 3500 and NZ BC Section G12
4. Mount Hot Water Backup Run Electrical Cables
The hot water backup module (HPHWB) shall be mounted close to the hot
water cylinder in a location that is easily visible to the hot water user. All
wiring to be completed according to AS/NZS3000 and Field Wiring Diagram
in page 23 of this manual. Fit isolators next to HWC and within 1 metre of
the water heater unit in an easily accessible location. Run all cables from
heat pump unit through conduit or trunking to the hot water cylinder location.
5. Tank Sensor Mounting
a) Econergy Hot Water Cylinder.
This comes with dual sensors, upper and
lower. Insert the lower tank sensor into the pocket about 1/3 of the way up the
HWC and secure with adhesive or silicone sealant. Take both sensors and
plug them in to their respective locations in the hot water backup (HPHWB)
module TTu/Ttl
b) Coopers or Rheem Solar Ready Hot Water cylinder.
The plumbing
installer needs to thread a tank pocket into the solar port of the hot water
cylinder and ensure there are no leaks. Apply thermal paste to the tank
sensor and insert the tank sensor into the pocket. Secure the tank sensor
with building adhesive or silicone sealant. Plug the tank sensor into the
header marked J4 or Ttl on the circuit board of the HWB module.
c) Generic Hot Water Cylinder.
Drill a 51mm (1/2”) diameter hole in the
hot water cylinder jacket at a height ¼ (25%) of the way up the cylinder, when
measured from the bottom.
Apply thermal paste to the tank sensor. Push tank sensor through the tank
sensor cover and lodge it in the tank sensor mount.
Do not wall mount the unit on any timber
framed wall (with or without brick veneer)
!