Midea RSJ-35/300RDN3-B Technical Manual
MDV 2
2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
nd
Generation ALL IN ONE Type
Heat Pump Water Heater
Technical Manual
Applicable Models:
RSJ-35/300RDN3-B
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
MDV reserves the right to discontinue, or change at any time, specifications or designs without notices and
without incurring obligations.
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
Contents
Part 1 General Information ........................................................................5
1. Measurements....................................................................................................... 6
2. External Appearance............................................................................................ 6
3. Nomenclature........................................................................................................ 7
4. Features................................................................................................................. 8
Part 2 Outdoor Units.................................................................................10
1. Specifications......................................................................................................11
2. Operation range.................................................................................................. 17
3. Capacity&COP table........................................................................................... 17
4. Dimensions .........................................................................................................17
5. Service Space ..................................................................................................... 18
6. Wiring Diagrams................................................................................................. 18
7. Piping Diagrams ................................................................................................. 20
8. Duct connection.................................................................................................. 17
9. Exploded View .................................................................................................... 22
Part 3 Installation......................................................................................25
1. Precautions......................................................................................................... 26
2. Installation information...................................................................................... 27
3. Unit Appearance and Composition................................................................... 28
4. Accessories......................................................................................................... 29
5. Inspecting and Handling the Unit ...................................................................... 29
6. Electric Wiring..................................................................................................... 29
Part 4 Trial Operation ...............................................................................31
1. Confirmation before the trial operation............................................................ 32
2. OPERATING INSTRUCTION............................................................................... 32
3. PCB explanation................................................................................................. 51
4. Maintenance........................................................................................................ 51
5. Malfunctions and Resolutions........................................................................... 53
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
Part 1
General Information
1. Measurements...................................................................6
2. External Appearance........................................................6
3. Nomenclature....................................................................7
4. Features.............................................................................8
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
1. Measurements
Model
Dimension
(mm: OD x H)
Net weight / Gross weight
(kg)
Power Supply
RSJ-35/300RDN3-B Φ650×1920
113 /129 220~240V-1ph-50Hz
2. External Appearance
RSJ-35/300RDN3-B
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
3. Nomenclature
Household Water Heating Unit
1
23
-
/
-5
Rated hot water output, unit: 100 W
6
7
8
Power supply specification code
Heating mode code
Water tank volume, unit: L
9
Other functions code
10 11
12
-
Water supply pump lift code
Refrigerant code
Design code
Installation type code
Water heating unit code
Export model code
For example:
-
B
Design code
300
Refrigerant code
Other functional code
N3
D
-
/
Water heating unit code
Rated hot water output, unit: 100 W
Water tank volume.unit:L
Heating mode code
R
35RSJ
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
4. Features
4.1 Safety
a. Complete isolation between water and electricity. No
electric shock problem, more safety.
b. No fuel tubes and storage, no potential danger from oil
leakage, fire, explosion etc.
c. No cross contamination potential, the condenser coil
wrapped around the stainless steel inner tank
4.2 Max. outlet water Temperature: 60℃.
The system is adopted innovative heating methods: combined the Electric heating and Heat Pump heating
properly, made the water be heated stably and quickly.
4.3 Flexible installation achieved by long air intake/outlet duct with pressure
4.4 Built-in heat exchanger inside tank for integrating multiple energy, such as solar
energy.
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
4.5 Automatic Control:
Automatic start-up and shutdown, automatic defrosting by revising refrigerant cycle. Save you much extra
operation.
4.6 High Efficiency and Energy Saving.
The unit adopts heat pump principle, which absorbs heat from outdoor air and produce heat water, thermal
efficiency can be approximately 3.6 (under the condition A15/12 W15/45)
4.7 All-the-weather Running.
Within the temperature range from -30 to 43℃, it will not be affected by night, cloudy sky,
rain even snow whether.
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
Part 2
Outdoor Units
1. Specifications..................................................................11
2. Operation range..............................................................17
3. Capacity & COP table .....................................................17
4. Dimensions......................................................................17
5. Service Space..................................................................18
6. Wiring Diagrams .............................................................18
7. Piping Diagrams..............................................................20
8. Duct connection..............................................................17
9. Exploded View.................................................................22
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
1. Specifications
Model RSJ-35/300RDN3-B
Running Models
Economy Hybrid E-heater
Running Ambient temp. ℃ -7~43 -30~43 -30~43
Power supply ph-V-Hz 220~240V-1ph-50Hz
Storage size Ltr 300
Capacity KW 3.00 3.00 3.00
Input KW 0.83 0.83 3.00
Cop W/W 3.60 3.60 1.00
Rated current A 3.00 3.00 3.00
Testing Condition
Economy: A15/12 W15/45, setting Economy Mode;
Hybrid: A15/12 W15/45, setting Hybird Mode;
E-heater: A15/12 W15/45, setting E-heater Mode;
Max. Input KW 1.50 4.30 3.00
Max. Current A 6.50 18.7 13
Water
Heating
Nonimal
Testing Condition
Economy: A 43 W60, setting Economy Mode;
Hybrid: A 10 W60, setting Hybird Mode;
E-heater: A15 W60, setting E-heater Mode;
Max. Input KW 4.3
Max. current A 18.7
Starting current A 49.0
Model RB233GRDC
Type Rotary
Brand Guangzhou Mitsubishi electric
Supplier Guangzhou Mitsubishi electric
Capacity Btu/h 9500
Input W 850
Rated current(RLA) A 4.1
Locked rotor Amp(LRA) A 30
Thermal protector ℃ 115
Capacitor uF 30
Crankcase W 25
Compressor
Refrigerant oil ml 440 (HAB (NEO 32 or similar))
Model YDK30-6R
Type AC Motor
Brand Welling
Insulation class B
Safety class IPX4
Input W 68
Rated current A 0.3
Capacitor uF 2.5
outdoor fan
motor
Speed(hi/lo) r/min 620/530/465
material ASG20
Type Centrifugal type
Pressure pa 30
Diameter mm 271
outdoor fan
Height mm 130
Number of rows 3
Tube pitch(a)x row pitch(b) mm 22*19.05
Fin spacing mm 1.5
Fin type Arc hydrophile seam punching fin
Tube outer dia.and type mm Ф8.0 innergroove tube
Coil length x height 482*352
outdoor coil
Number of circuits 4
Outdoor air flow (Hi/mid/lo) m3/h 414/355/312
Noise level dB(A) 46.6
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
Running Operation
Auto/Manual start up, Energy-saving, standard, Enhanced
heating type heating water
Protection Method
High-pressure protection, Over-load protection,
Temp protection, Electric leakage protection
Dimension (D*H) mm Φ650×1920
Packing (W*H*D) mm 745*2030*775
Outdoor unit
Net/Gross weight kg 113/129
Refrigerant type/Quantity Kg R134a/1.2
Design pressure
(Operating pressure Refrigerant)
MPa 3.0/1.2
Tank pressure Mpa 0.15/0.7
Tank Foaming Material/Depth(mm) polyurethane/55mm
Ambient temp ℃ -30~43
Diameter, water inlet pipe mm DN20
Diameter, water outlet pipe mm DN20
Diameter, drainage pipe mm DN20
Diameter, PT valve joint mm DN20
PT valce Brand Watts (active condition 99℃ or 1.0Mpa )
Rated pressure MPa 1.2
Max. Operation pressure MPa 0.7
Water outlet Temp ℃ (default) 55℃, 38℃～60℃
water
pipeline
Heat exchanger Copper tube wrapped around outside of tank
Diameter, water inlet pipe
mm
DN20
Diameter, water outlet pipe mm DN20
Heat exchanger Surface heat exchanger; Stailess steel SUS316L
heat exchanger tupe Dim.*Length mm Φ22*10000
heat exchanger area m2 0.7
Solar heat
exchanger
pipeline
Max.pressure MPa 0.7
Power wiring
mm2
4
Connection
wiring
Signal wiring
mm2
0.75
Fresh Air Diameter
mm
190.0
static pressure
Pa
30.0
Fresh air
Max Length
m
10.0
Hot Water Yield m3/h 0.075 0.075 0.064
Electric Heater kW 3.0
Remark:
1. The test conditions: outdoor temp. 15/12℃(DB/WB), inlet water temp. 15℃, outlet water temp. 45℃.
2. The operation range:-30℃-48℃, heat pump operation range: -7℃-43℃
3. The specification may be changed for product improvement, please refer to the nameplate.
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
2. Operation range
Mode explanation: there are 3 operation MODE: ECONOMY, HYBRID and E-HEATER
ECONOMY MODE: Water firstly is heated by compressor, if can’t get target temp when ambient temp. too low or too high
(limitation figure is shown above), element will start as a secondary heat resource.
Hybrid mode: In case of massive hot water consumption, compressor & element will start at the same time.
E-HEATER MODE: Water is only heated by element;
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
ECONOMY MODE:
Hybrid mode:
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
E-HEATER MODE:
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
3.
Capacity & COP table
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
-7 -2 2 7 10 15 20 25 30 35 40 43
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
Capa. (W)
COP （W/W）
Ambient temp(℃)
Remark:
Water inlet temp. 15℃， Water outlet temp. 45℃
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
4. Dimensions
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2nd Generation ALL IN ONE Type Heat Pump Water Heater Technical Manual
5. Service Space
6. Wiring Diagrams
manometer (High Pressure Switch)
1 202301800820
Discharge temp sensor ass'y (Tp)
1 202301300130
room temp sensor ass'y (T4)
1 202301300196
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