Midea HP170, RSJ-15/190RDN3-C Maintance Manual
Page i
Installation &
Maintenance Guide
Midea Heat Pump Water Heater - 170 Litre
WARNING
If you can’t ensure that the property's power supply is correctly earthed, please don’t
install the unit.
The unit must be installed by a licensed trade person and in accordance with:
• This Installation & Maintenance Guide.
• AS/NZS 3500.4 - ”National Plumbing and Drainage Code Hot Water Supply
Systems-Acceptable Solutions”.
• AS/NZS 3000-Wiring Rules.
• Local authority regulations.
• Building Codes of Australia.
• Local Occupational Health and Safety (OH&S) Regulations.
This unit requires reliable earthing before usage,
otherwise this may result in injury or death.
NOTICE TO CUSTOMERS
This water heater must be installed by a licensed person as required by the Building Act. Only a licensed person will give you a
certificate of compliance, showing that the work complies with all the relevant standards and only a licensed person will have
insurance protecting their workmanship.
Please read and understand this booklet. If you have any questions, please contact our service team on 1300 367 565.
WARNING - HOT WATER CAN BE DANGEROUS
Hot water burns! As a safety precaution, young children should always be supervised around hot water fixtures.
Heat pump water heaters can store water at temperatures that can cause scalding. Water temperatures over 50°C can scald and care
needs to be taken to ensure that injuries do not occur through incorrect use of your water heater.
As heat pump water heaters can generate water temperatures in excess of 50°C, regulations require that a tempering valve be fitted to
the heater to prevent water temperatures going to the home exceeding a pre-set safe maximum. A tempering valve must be connected
to the hot water outlet line from the water heater. The valve must be fitted by an authorised plumber at the time of installation or in
retrofitting to existing systems.
Care should be taken to avoid coming into contact with any pipe work or fixtures associated with the water heater pipe lines. Under NO
circumstances should any ‘home handy man’ type modifications be attempted.
• This appliance is not intended for use by persons (including children) with reduced physical sensory or mental capabilities, or lack of
experience and knowledge, that prevents them from using the appliance safely without supervision or instruction. Children should
be supervised by a responsible person for their safety to ensure that they do not play with the appliance.
• DANGER: Failure to operate the relief valve easing gear at least once every six months may result in the water heater exploding.
Continuous leakage of water from the valve may indicate a problem with the water heater.
• THE INSTALLATION MUST COMPLY WITH THE REQUIREMENTS OF AS/NZS 3500.4, AS/NZS 3000, and all local codes and
regulatory authority requirements. In New Zealand, the installation must conform to the New Zealand Building Code G12.
The power supply must be protected by an individual circuit breaker at the main electrical supply switchboard and rated to suit the size
of the element. The supply to the heat pump water heater can be operated directly from the switchboard or via a remotely mounted
switch as requested by the customer. The heater must be provided with a suitable means for disconnecting the power supply.
Section 1: Product Information & Schematics
1-2
Section 2: Safety Information
3
Section 3: Before Installation
4
Section 4: System Installation
5-8
Section 5: System Commissioning
9-10
Section 6: System Operation
11-14
Section 7: System Troubleshooting
15-17
Section 8: System Maintenance
18
Section 9: Warranty
19
GUIDE
CONTENTS
Page 1
1.2 System Parts
FAN ASSEMBLY
PTR VALVE
TOP COVER
EVAPORATOR FILTER
ANODE ROD
UPPER REAR COVER
UPPER FRONT COVER
HOT WATER OUTLET
COLD WATER INLET
DRAIN PORT
ELECTRIC ELEMENT
FRONT FASCIA
TEMPERATURE SENSOR
ELECTRONIC CONTROL BOX
POWER CONNECT BOX & COVER
COMPRESSOR
DISPLAY
ANODE ROD COVER
ATCO
TCO
ELECTRICAL ELEMENT COVER
NOTE
All pictures in this manual are for explanation purpose only.
They may different from the actual unit.
978 (PTR CONNECTION)
978 (HOT OUTLET)
685 (COLD INLET)
1580 (HEIGHT)
568 (WIDTH)
1215 (ELECTRICAL ENTRY)
MIN 700
(SUPPORT BASE)
MIN 700
(SUPPORT BASE)
PRODUCT
INFORMATION & SCHEMATICS
1
1.1 System Schematics (Dimensions in millimetres)
Page 2
Model HP170 (RSJ-15/190RDN3-C)
Modes Economy Hybrid E-Heater
Hot water heating capacity 1500W
Heat Pump E-Heater
2150W
1500W 2150W
Rated input power/current 780W/3.4A 2780W/12.1A 2150W/9.3A
Power supply 220-240V~ 50Hz
Protection Over-load Protector, Temp Controller & Protector, Electric Leakage Protector
Compressor power / E-heater power 440W / 2150W
Water
pipeline
system
Outlet water temperature Default 60°, (60°-70° adjustable)
Water side exchanger Outer coil inner water tank
Inlet / Outlet connector diameter DN20
Drain connector diameter DN20
PTR valve connector diameter DN20
Maximum pressure 1000kPa
Exchanger air
Side
Material Hydrophilic aluminium fin, inner groove copper tube
Motor power 40W
Air inlet / outlet Air in from Sides / Air out from Rear
Fusible link type T20A 250VAC
Refrigerant R134a (800g)
Dimension Ø568×1580mm
Water tank capacity 170L
Net weight 90kg
The test conditions: 1.Test temperature 15/12°C (DB/WB) / 2. Water temperature from 15°C up to 45°C.
Ambient temperature sensor
Suction temperature sensor
CN20
SW3
SW3-2
SW2
SW2-1
Without
2150W
1070W 3200W
1600W
Fan capacitor
1.3 System Specifications
1.4 Electrical Schematic
Page 3
Please read thoroughly all of the instructions before installing and operating the unit.
The following safety warnings are very important, always read and obey all safety symbols:
WARNING
• The unit must be earthed effectively.
• A RCD breaker must be installed adjacent to the power
supply.
• Do not remove, cover or deface any permanent instructions or
labels from either the outside or inside of the unit panels.
• Only qualified persons should install the unit in accordance
with local and national regulations and this guide.
• Improper installation may result in water leakage, electric
shock or fire.
• All electric connections should comply with the regulations of
the local power company, local electric utility and this guide.
• Never use an incorrectly rated fuse, otherwise the unit may
break down and cause an electrical fire.
• Do not insert fingers, rods or other objects into the air inlet or
outlet. The fan is rotating at high speed, and may cause injury.
• Never use a flammable spray such as hair spray or lacquer
paint near the unit. It may cause a fire.
• This appliance is not intended for use by persons (including
children) with reduced physical, sensory or mental capabilities,
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the unit
by a person responsible for their safety. Children should be
supervised to ensure that they do not play with the appliance.
• DISPOSAL: Do not dispose of electrical
appliances as unsorted municipal waste, use
separate collection facilities. Contact your
local government for information regarding the
collection systems available.
• If electrical appliances are disposed of in landfills or dumps,
hazardous substances can leak into the groundwater causing
health concerns.
• The unit must be securely fixed, otherwise, noise and vibration
may result.
• Make sure that there are no obstacle around the unit.
• If the unit is to be installed in an area that is subject to lengthy
periods of direct sunlight, additional UV protection for the
display screen is advised.
• In places where there are strong winds (e.g. seaside
locations), fix the unit in an area protected from the wind.
• The PTR Valve should be operated every
6 month to make sure that there is no
restriction of the valve. Please beware of
hot water being expelled from the valve.
The drainage pipe should be well insulated
in order to prevent water inside pipe from
freezing in cold weather.
CAUTION
• The earthing pole must be well grounded. Make sure that any
power supply socket and plug are dry and connected tightly.
• Before cleaning, be sure to stop the operation and isolate the
unit (i.e. turn the isolating switch or breaker off). Otherwise, an
electric shock and injury may be caused.
• Water temperature over 50°C can
cause severe burns or even death
from scalds. Children, disabled and
elderly are at highest risk of being
scalded. Feel water before bathing or
showering. Water temperature limiting
valves are required as per AS 3500.
• Do not operate the unit with a wet
hand as an electric shock may occur.
• A one-way (non-return) valve must be installed on the water
inlet side, as well as a suitable isolation valve.
• It is normal for some water to be released from the PTR valve
during operation. But, if there is a large volume of water, call
our service team for further advice. After long term use, check
the unit base and fittings. If damaged, the unit may sink,
resulting in injury. Arrange the drain pipe to ensure effective
draining. Improper drainage may cause water damage to
surrounding areas such as buildings, furniture etc. Do not
touch the inner parts of the controller or remove the front
panel. Some parts inside are dangerous to touch, and may
cause damage.
• Do not turn off the power supply except for service and
maintenance purposes. A continuous power supply for water
heating is necessary.
• Hydrogen gas is extremely flammable, and may build up if
no water is drawn off for several weeks. To reduce the risk of
injury under these conditions, it is recommended that the hot
water tap is opened for several minutes at the kitchen sink
before using any electrical appliance (i.e. washing machine
/ dishwasher) connected to the hot water system. When
hydrogen is present, there will probably be an unusual sound
such as air escaping through the pipe as the water begins to
flow. There should be no smoking or open flame near the tap
at the time it is open.
Handle
Drainage
pipe
SAFETY
INFORMATION
2
Page 4
3.1 Unpacking
When unpacking ensure the following items are included:
Main Unit
The Main unit including the storage tank & heat pump
Fascia Cover
A decorative panel to cover the electrical compartments
Condensation Tube
Used for draining condensation from the unit
PTR Valve
Pressure Temperature Relief Valve (May be pre-fitted)
Installation & Maintenance Guide
In-depth installation & maintenance detail on the product
Quick Start Guide
A quick step by step visual look at installation
3.2 Transporting the unit
The following should be adhered to when transporting the unit:
1. Don’t incline the unit more than 25°
from vertical when moving, and keep
it vertical when installing.
2. Avoid scratching or damaging the
unit by using protective coverings
where applicable.
3. As this unit is heavy it needs to
be carried by two or more persons, to avoid injury and/or
damage.
3.3 Location requirements
The following considerations should be addressed when finding a
suitable location:
4. Ensure enough space for installation and future maintenance
is allowed.
5. Both the air inlets & outlet should be free from obstacles &
strong wind.
6. The base surface should be flat (i.e. no more than a 2° incline)
and be able to bear the weight (over 285kg) whilst ensuring
no issue will arise in regards to increased noise and/or
vibration.
7. Operating noise & air flow expelled should not affect others.
8. Ensure no flammable gas is nearby.
9. Positioning should be convenient for plumbing and wiring.
10. Installing indoors may cause indoor temperature fluctuations
and excessive noise.
11. If the unit has to be installed on a metal part of the building,
make sure the electrical insulation meets the relevant local
standard.
12. Securely fixing the unit will assist in avoiding unwanted noise
and/or vibration.
CAUTION
• Consideration must also be made in regards to the ambient air
temperature. Heat pump economy mode operates between
ambient air temperatures of 5°C and 43°C. Temperatures
below this range will rely purely on the electrical element and
the heat pump economy mode will not operate.
• The unit should be located in an area not subject to freezing
temperatures. A unit located in unconditioned spaces
(i.e. garages, basements, etc.) may require the condensate
tubing, and drain piping to be insulated against freezing.
Installing the unit in any of the following places may lead to
malfunction (consult with your representative prior to purchase).
• Site contains mineral oils (e.g. lubricant of cutting machines).
• Seaside areas or where the air contains salt.
• Hot spring areas where corrosive gases exist (e.g. sulphide).
• Factories where the power voltage fluctuates dramatically.
• Inside a recreational vehicle (RV) or cabin.
• Places with direct sunlight and/or other high heat sources.
(If there’s no way to avoid these, a cover may be required).
• Areas where oil may permeate the system (e.g. Kitchens).
• Areas where strong electromagnetic fields exist.
• Areas where flammable gases or materials exist.
• Areas where acidic or alkaline gases exist.
• Other special environments.
3.4 If installed in enclosed space
If the unit is installed in an enclosed space the area must be
greater than 15m³, and must have unrestricted air flow.
As an example, a room that has a 2.5 metre tall ceiling and is 3
metres long by 2 metres wide would contain 15m³.
≥600
≥500
≥300
<
25°
Incline Limit: <25°
BEFORE
INSTALLATION
3
Page 5
NOTE
• The cold water inlet and hot water outlet are 3/4” (20mm)
male (external thread) connections.
• The PTR outlet is a 3/4” (20mm) female (internal thread)
connection.
• The Drain port is a 3/4” (20mm) female (internal thread)
connection.
• All hot water plumbing must be insulated for safety & heat
retention.
• The circulating air for every unit should be more than
350m3/h. Make sure there is enough installation space.
Refer dimensional drawing (see page 4).
CAUTION
• Systems must be plumbed as per the above figure. In case of
installing where outside temperatures fall below 5°C, insulation
must be provided for hydraulic components (i.e. piping).
• If the inlet water pressure is less than 150kPa, a pump should
be installed at the water inlet.
• To guarantee the safe usage of tank, a reduction valve should
be installed in the water inlet line if the water pressure exceeds
500kPa.
• Pipes must be heat-resistant and durable.
WARNING
• Do not dismantle the PTR Valve,
• Do not block off the Drainage pipe, it may cause
explosion and/or injury.
4.2 Installation position requirement
Install the unit with suitable clearance for air flow and plumbing
access (refer to options below)
OPTION 1 (Front On)
DISPLAY
150
AIR OUTLET
600
DISPLAY
AIR
OUTLET
600
WALL
WALL
OPTION 2 (Side)
DISPLAY
AIR
OUTLET
600
WALL
Position the unit on a flat sturdy surface able to bear the weight of a
fully filled unit (allow over 285kg).
PTR VALVE
(RUN TO LEGAL
POINT OF
DISCHARGE)
To ensure correct drainage of condensation from the unit, please
install on a level base. If the base is not level please ensure the
drain location is positioned towards the lower end. Maximum
inclination angle of unit relative to the ground is 2°.
MAX 2
˚
DRAIN
LOCATION
DRAIN
LOCATION
EXPLOSION
COLD WATER EXPANSION VALVE
(May be required to meet
local regulations)
CONDENSATE
OUTLET (UPPER)
CONDENSATE
OUTLET (LOWER)
PTR VALVE
COLD WATER
INLET
HOT WATER
OUTLET
ISOLATION
VALVE
DRAIN PORT
NON-RETURN
VALVE
TEMPERING
VALVE
WATER IN
SUITABLE
DRAIN
4.1 Plumbing Layout
SYSTEM
INSTALLATION
4
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