Econergy Installation Manual Rev G 240914
© Hot Water Heat Pumps Ltd 2018
12/03/2018
www.econergy.co.nz
15
Heat Pump Water Heater Installation Guide
Piping Diagram 1: Retrofit to Generic Single Inlet Hot
Water Cylinder (eg Rheem NZ)
Notes:
Piping Diagram 1: Generic Single Inlet Hot Water Cylinder
Econergy Accessories Required:
No
Part Number
Description
Purpose
1
HPGRK
Generic Retrofit Kit
(comprises tank fitting and
tank sensor kit).
Allows retrofit to any
standard hot water
cylinder
1. Cylinder must be post 1988 and in good condition
2. Fitting of Tank Sensor kit (HPTSK) may void HWC’s manufacturer
warranty
3. Ensure minimum pressure of 50kPa met on low pressure installations
(may require fitting of relief valve to open vent HWC)
Piping Diagram
Generic Mains
Pressure HWC
Rev B 24/09/14
Mixing Valve
20mm
Outlet
Hot Water
Backup
Module
Cold Water
Expansion
Valve
15mm
TPR
20mm
20mm
Pressure
Reducing
Valve
20mm
20mm
Ball
Valve
Ball Valve
Stop
Valve
Check
Valve
Mains
Supply
Regulated
House
Supply
Mixed 50-55°C
Hot Water
60°C Hot
Water
15MM PVC
Condensate
(optional)
Lower Tank
Sensor (Ttl)
- Retrofit to
P solar port
Back up Supply
15mm insulated Line
15mm insulated Line
HP
supply
CA
T-5
Mains In
DRAIN
Econergy
Water
Heater
Inlet
Outlet