8.5kW Packaged Hydrobox System


With all the heating and cooling ability of the Ecodan Cylinders, the Ecodan Hydrobox is a small form factor heating and cooling powerhouse. The hydrobox can be connected to underfloor, fan coils and/or radiators and provide a whole home central heating solution. For users looking for domestic hot water, the hydrobox can be connected to a heat pump compatible coiled cylinder, while still providing whole home heating. At a similar size to a conventional gas hot water heating system, the small form factor hydrobox is a highly adaptable solution for retrofit or new builds. The system comprises of the 8.5kW PUHZ-W85VAA-BS outdoor packaged unit, the EHPX-VM2C hydrobox and FTC5 controller.

Heating Capacity9.0 kW
Select a Size - R32 Refrigerant
Select a Size - R410A Refrigerant


Key Features

  • Self-contained unit, only requiring water and electric connections
  • No need for gas supply, flues or ventilation
  • Single phase power supply with a low starting current
  • Low maintenance and quiet operation
  • Optional 2-Zone Energy Efficient Space Heating Control
  • Energy monitoring as standard
Domestic Applications
  • Heating and hot water
  • The vast majority of NZ homes
Commercial Applications
  • Small retail outlets
  • Health clinics
  • Public sector and commercial buildings

FTC5 Controller – With Energy Monitoring

The Mitsubishi Electric Fifth Generation Controller (FTC5) includes intelligent room temperature control as standard. This together with advanced weather compensation ensures the system delivers efficient, comfortable heating regardless of the season. FTC5 now also includes energy monitoring, showing consumed and produced energy.

2-Zone Control Allows you to Simultaneously Control Two Different Temperature Zones

Using Ecodan, it is possible to control two different flow temperatures, thereby managing two different heating load requirements. The system can adjust and maintain two flow temperatures when different temperatures are required for different rooms; for example, controlling a flow temperature of 40°C for the bedroom radiators and another flow temperature of 30°C for the living room underfloor heating.


PUHZ-W85VAA - Ecodan Monobloc Air Source Heat Pump

Function: Hot Water Heating
Type: Monobloc Air Source Heat Pump
Refrigerant Type: R410A
HEATING (A7/W35)*¹
Capacity (kW): 9.00
Power Input (kW): 2.15
COP: 4.18
HEATING (A2/W35)*²
Capacity (kW): 8.50
Power Input (kW): 2.68
COP: 3.17
Operation Ambient Temperature (°C DB)*4: -20 ~ +35°C
Sound Pressure Level at 1m (dBA)*¹: 48
Low Noise Mode (dBA)*¹: 42
Water Pipe Size: 1" BSP Parallel Thread. ISO 228/1-G1B)
Flow Rate (l/min): 25.8
Water Pressure Drop (kPa): 13.5
Power supply: 230V / Single Phase / 50 Hz
Maximum Current / Fuse Rating (A): 23 / 25
Dimensions (WxDxH, mm): 950 x 330 + 30*³ x 943
Weight (kg): 79

*1 Under normal heating conditions at outdoor temp: 7°CDB / 6°CDB, outlet water temp 35°C, inlet water temp 30°C as tested to BS EN14511.
*2 Under normal heating conditions at outdoor temp: 2°CDB / 1°CDB, outlet water temp 35°C, inlet water temp 30°C.
*4 Heating maximum ambient temperature - 21°CDB, DHW hot water maximum ambient temperature - 35°CDB.

EHPX-VM2CR3 - FTC5 Packaged Hydrobox for R410A Units

Type: FTC6 Packaged Hydrobox for R32 Units
Operating Ambient Temperature: 0 ~ +35°C (RH<80%)
Sound Power Level [dBA]: 28
Water Pipe Connections [mm]: 28mm Compression
Primary Pump: Grundfos UPM2K 15 - 75 130
Primary Expansion Vessel [L]: 10
Charge Pressure [MPa (Bar)]: 0.1 (1)
Target Temperature Range
Space Heating Flow Temperature [°C]: 25 - 60
Space Heating Room Temperature [°C]: 10 - 30
Control Thermistor [°C]: 1 - 80
Pressure Relief Valve [MPa (Bar)]: 0.3 (3)
Flow Sensor (Minimum Flow 5.0L/min): Supplied
Manual Reset Thermostat [°C]: 90
Thermal Cut-out (for dry run prevention) [°C]: 121
Power supply: 230-240V / Single Phase / 50 Hz
Current [A]: 1.95
Breaker [A]: 10
Power supply: 230-240V / Single Phase / 50 Hz
Capacity [kW]: 2
Current [A]: 9
Breaker [A]: 16
Dimensions (WxDxH) [mm]: 530 x 360 x 800
Weight (Empty / Full) [kg]: 37 / 42

*1 Depending on the ambient conditions, unit may not reach the set temperature.




  • Mitsubishi Electric Ecodan Hot Water Heat Pumps come with a 5 Year Parts and Labour Warranty.

    Warranty commences from the date the system is purchased and installed. The installer must also fill out and return a BDT commissioning form applicable to the original purchaser. The installer must also have completed the Ecodan training course. Equipment defects covered by this warranty will be repaired or replaced at the discretion of BDT without cost to the owner for parts or direct repair labour. A BDT authorised repair company shall carry out the repair or replacement during normal business hours.

    Any Mitsubishi Electric Ecodan parts or equipment replaced under the warranty will be warranted in accordance with the provisions of this warranty for the remainder of the original warranty period or 12 months from the completion of the repair, whichever is the greater.

    Except where inconsistent with the owner’s statutory rights and the rights given by this warranty, all other warranties and all liability of BDT for any loss or damage direct and consequential is expressly excluded.

    For full details view warranty terms and conditions.pdf (140 KB)


Ecodan Air-to-Water Hydronic Heat Pump with Hydrobox

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