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Rinnai 22 

EHPA Heat Pump OIM

OPERATION SEQUENCE OF CONTROLLER 

When  the  power  supply  turns  on,  the  heat  pump  control  system  initiates  and  will  check  the  unit’s  operating 

parameters. The controller will check on all sensors, pressure switches and also main voltage.  If conditions are 

suitable (i.e All  reading within the reasonable range) and there is enough energy available in the surrounding air, 

the fan, circulating pump and compressor will turn on. If not enough energy is detected in ambient air then the 

controller calls for the booster heating element to run.  
There will be a delay of approximately 2 minutes from the time the main power is switched on before the pump, fan 

and compressor begin operating.
The unit is self regulating so there are no internal adjustments to be made during commissioning. When the unit is 

operated for the first time, it runs through an initial heat up cycle, allow time for the initial heat up cycle. Depending 

on the ambient conditions this can take several hours. 

Once its first heat up cycle is complete, empty approximately 60 litres of hot water from the tank through the PTR 

valve outlet then allow the water in the tank to re-heat. Once the re-heat cycle is completed measure the water 

temperature at the PTR outlet again. The temperature will be approximately 60º C.

If for any reason the unit does not start, the water is cold and the controller unit is not displaying any LED lights, an 

electrician should test that power is available to the heat pump.

1

2

3

4

5

6

7

8

9

10

11

12

1

DIP Switch Test & Configuration

7

Low Pressure Switch

2

Ambient Temperature Sensor

8

High Pressure Switch

3

Water Tank Temperature Sensor

9

Programming Port

4

Compressor Discharge Temperature Sensor

10 Compressor, Element , Main Power

5

Fan Coil (Evaporator) Temperature Sensor

11 2 A Fuse

6

LED Lights

12 Fan, Pump, Defrost

INSTALLATION

Summary of Contents for Enviroflo EHPA250VM

Page 1: ...8 Lic W00169 SAI Global N10378 This system shall be installed commissioned and serviced by an authorised person in accordance with Manufacturer s Instructions Current AS NZS 3500 All applicable local...

Page 2: ...ice Call 9 Specifications 11 System Specifications 11 Dimensions 12 Clearances 13 Installation 14 Regulations and Occupation Health and Safety OH S 14 Location 14 Water Supply 15 Storage Temperature 1...

Page 3: ...d by an authorised person in order to avoid a hazard Take care not to touch the power connections or plugs with wet hands Care should be taken not to touch the pipe work as it may be HOT DO NOT place...

Page 4: ...licable regulations IMPORTANT IMPORTANT DO NOT TILT MORE THAN 45 FROM VERTICAL 45 The Rinnai Enviroflo Electric Heat Pump must be transported at an angle no greater that 45 from vertical As the compre...

Page 5: ...r before bathing or showering yourself Supervise children whenever they are in the bathroom Make sure that the hot water tap is turned off tightly CONSIDER Installing child proof tap covers or child r...

Page 6: ...The heat pump unit includes a circulation pump which draws water from the bottom of the storage tank and returns it to the tank at a higher temperature A temperature sensor in the tank is used to con...

Page 7: ...the easing gear is closed attendance by an authorised person must be arranged without delay The PTR valve is not serviceable EXCESSIVE DISCHARGE FROM SAFETY DEVICES Pressure Temperature Relief PTR Va...

Page 8: ...ed below in the section the section Draining and Filling on page 8 TURNING ON THE WATER HEATING SYSTEM Switch on the electric supply to the heat pump unit Water heating will now occur as required It m...

Page 9: ...blem If the valve dribbles continuously try easing the valve gear for a few seconds as described in the section Excessive Discharge from Safety Devices on page 7 This may dislodge any foreign matter a...

Page 10: ...S One or more hot taps opened at the same time More than one or two hot taps in use at the same time may cause a decrease in the hot water flow from the taps Is there more than one or two hot taps ope...

Page 11: ...actory Wired 1 0 KW Total Rated Input To be wired by installer 3 4 KW Maximum Energy Output Use to size PTR 4 29 kW Power Supply 240 V AC 50 Hz Rated Current 15 A Refrigerant Type Mass R290 300 g Refr...

Page 12: ...HPA Heat Pump OIM DIMENSIONS EHPA250VM EHPA315VM Cylinder height 1872 2165 Hot Outlet PTR 1248 1541 Cold water inlet 210 210 Cylinder diameter 611 611 Height Diameter PTR Hot Outlet PTR Cold Inlet SPE...

Page 13: ...13 EHPA Heat Pump OIM CLEARANCES Allow 700mm on the fan discharge side and 150 mm clearance on the fan suction side to allow for sufficient air flow through the fan 700 mm 150 mm 700 mm 150 mm SPECIFI...

Page 14: ...the distance between the heat pump and the outlets is considerable a flow and return system can be used which minimize the waiting time for hot water delivery It is recommended that all components are...

Page 15: ...ry and secondary schools and nursing homes or similar facilities for young aged sick or people with disabilities and 50 C for all other buildings To comply with these requirements a temperature limiti...

Page 16: ...ck into the compressor motor Tilting the heatpump beyond 45 from vertical will also place undue strain on compressor motor mounts and associated piping POSITIONING THE HEAT PUMP Arrive at site and con...

Page 17: ...passage through the valve The PTR valve must be installed on the connection marked hot water outlet near the top of the cylinder Leave the valve outlet pointing down Tighten the valve using the spanne...

Page 18: ...Union Connection Non return Valve Line Strainer Cold Water Inlet Isolating Valve Spindle Vertical Cold water expansion control valve Connect the pipe work supplying hot water to the premises to the ho...

Page 19: ...NOT be activated until the system is filled with water The premises wiring to the heater must be capable of withstanding the appliance load Refer to specification table for load details All electrical...

Page 20: ...EARTH wire is securely fixed to the earth post provided on the heater case Inspect and ensure that all wiring links are secure prior to fixing the access cover and turning the POWER ON NEUTRAL EARTH C...

Page 21: ...Any remaining air will be bled from the automatic air vent If leaks are detected turn off power to the heat pump repair any leaks and repeat the filling process to remove any air If no leaks are dete...

Page 22: ...rated for the first time it runs through an initial heat up cycle allow time for the initial heat up cycle Depending on the ambient conditions this can take several hours Once its first heat up cycle...

Page 23: ...Discharge Sensor FAILURE Five Times Compressor Discharge Sensor 110 C Six Times Low Pressure Switch Open Seven Times High Pressure Switch Open Eight Times Under Voltage 190 V AC Nine Times Over Volta...

Page 24: ...ocal call higher from mobile or public phones Hot Water Service Line Tel 1800 000 340 Australia Pty Ltd ABN 74 005 138 769 Internet www rinnai com au E mail enquiry rinnai com au Rinnai has a Service...

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