Hitachi HIGHLY WHP08750VCDNC9AU User manual

HitachiHighly
Rollkolbenverdichter
Rotary Compressors
Spezifikation
Installation Manual
WHP08750VCDNC9AU
RIES GmbH, Rudolf-Diesel-Str. 10, D 64569 Nauheim, GERMANY
Phone: [phone], Fax: [phone], Email: [email protected], Website: www.ries-gmbh.de
R 410A - R 134a - R 513A
23,2 cm3/rev
1000 - 7200 min-1
DC /BLDC

Table of Contents
1. WHP08750VCDNC9AU Specifications ———————1～4
1.Scope of application
2.Compressor specifications
3.Motor parameters
4.General characteristics
5.Parts and drawings list
2. Standards for the use of special
compressors for heat pump water heaters ———5～14
3. Basis and rules for acceptance ——————————— 15
1.Acceptance basis
2. Acceptance rules
4. Drawings
5. modify the experience
————————16～32
————————Appendix

SUBJECT
Model WHP08750VCDNC9AU SPECIFICATION PAGE：1/32
1. SCOPE
This specification is applied to SHANGHAI HIGHLY
Heat pump water heater compressor.
2. SPECIFICATION OF THE MODEL
Item Spec
2.1 Model Type WHP08750VCDNC9AU
2.2 Power source input to HITACHI
inverter （SHEC
220V
Rated voltage
Rated frequency
Phase
50 Hz
1phase
2.3 Output 2200W(at R410A 3300rpm)
2.4 Application Heat pump water heater
2.5 Refrigerant R410A/R134a/*R513A
2.6 Displacement 23.2ml/rev
2.7 Allowable frequency range 1000～7200min-1
2.8 Oil HAF68D1C or equivalent 630±20ml
2.9 Allowable amount of refrigerant
charge
Below 2100g
2.10 Compressor cooling Forced air
2.11 Hermetic Terminal 1/4”quick connect type
2.12 Space volume of inner case
1145cm3
2.13 Compressor weight 13.6 kg incl. Oil
2.14 Motor Type
Insulation class
Direct current brushless motor E class
R410A R134a *R513A
2.15 Nominal Heating Capacity (see *)
8750 4100 4212
2.16 Compressor Rated Input (see *) 2150 900 932
2.17 COP
4.05 4.56 4.52

SUBJECT
Model WHP08750VCDNC9AU SPECIFICATION PAGE：2/32
Item Spec
2.18 Current （ A ） 12/4.9/4.9（compressor input）
2.19 Noise （dB（A））(see appendix) Below 78
2.20 Vibration （m/s2）（see appendix） Below 5
2.21 Natural frequencies of the compressor 13Hz/20Hz/21Hz
（Should try to avoid or pass quickly）
2.22 Capacity measuring conditions and
noise & vibration measuring condition
Rotational speed
Evaporating temp.
Condensing temp.
Liquid temp.
Ambient temp.
Return gas temp.
Wind speed
3300min-1
7.2 ℃
54.4℃
46.1℃
35.0℃
35.0℃
2 m/s
*.Nominal heating capacity equals refrigerant capacity adding motor input. Refrigerant capacity and
motor input are measured by secondary. Refrigerant calorimeter Methods of GB5773 by Shanghai Hitachi
Electrical Appliances Co.,Ltd. Allowable heating capacity should be more than 95% of the nominal
heating capacity and allowable motor input should be less than 107% of nominal motor input.
3. MOTOR PARAMETER
Item Spec 数 Explanation
3.1 Rotor Pole（Pole） 4 ——
3.2 Rated Frequency Range
（Hz） 30-240
Electrical Frequency，Relating to
VDCmax of Inverter
3.3 Demagnetizing
Curren（A） 32.0A
Peak Current，at 120℃，-5%
Demagnetizing Rate
3.4 Inductance Ld（mH） Sheet 1 ——
3.5 Inductance Lq（mH） q Sheet 1 ——

SUBJECT
Model WHP08750VCDNC9AU SPECIFICATION PAGE：3/32
Item Spec explanation
3.6 Winding Resistance（Ω）
（20℃） 0.856 Line-to-Line
3.7 Voltage Constant
（Vrms/krpm） 33.50 Line-to-Line
3.8 Torque Constant
（N·m/Arms） 0.52 Torque/Current
3.9 Inertia （Kg·m2） 0.000361 ——
3.10 Flux Φa（Wb） 0.1310
φ(Per Phase，Peak)=
3.11 Magnet Material NdFeB
1
4. CHARACTERISTICS
4.1The surface of the compressor is painted to black, without obvious flaw ,impact scar, paint peel
off, rust and so on.
4.2. Indication
Compressor model type, manufacturing data are clearly indicated on the surface of compressor。
4.3. Residual moisture 250mg MAX
4.4. Residual impurities 150mg MAX
（RMS） 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0
Lq(mH) 9.55 9.27 8.77 8.34 8.00 7.72 7.49 7.29 7.12 6.97 6.83 6.70
Ld(mH) 5.69 5.61 5.53 5.44 5.35 5.27 5.20 5.12 5.05 4.97 4.90 4.82

SUBJECT
Model WHP08750VCDNC9AU SPECIFICATION PAGE：4/32
5 PARTS AND DRAWING LIST
PARTS NAME QTY/SET DRAWING NO. REMARKS
Compressor 1 4CYCL0051 Dimensioned
sketch
Mounting
Parts
Rubber grommet
Bolt
Nut
3
--
--
4CYC00754
4CYC00791
M8
*
*
Electrical
Parts
Thermostat
Terminal cover
Gasket
Nut
Rubber washer
Sleeve
1
1
1
1
1
1
4CYC01036
4CYC00988
4CYC01047
3CYC00004
4CYC00174
4CYC01042
4CYC01039
1
2
3
Lead routing
Pressure guarantee
Chart
Oil level datum
Notes for rotational
speed change
Performance curse
Appendix
*. Out of supply, for reference.

DC INVERTER COMPRESSOR CRITERIA
PAGE：5/32
COMPRESSOR CRITERIA
1 Strictly observe the specification
The compressor should be used in specifications written in this “compressor specification” and
not be used in specifications outside it. Moreover, accessories should be specified parts used in
specified way, service must use specified parts too. The main circuit must link up
with fuse or breaker.
2 Source voltage
Specified inverter is linked up with compressor terminals . Applied voltage of this inverter
should be voltage specified in this “compressor specification”. Alternating voltage should
never be applied on terminals (for example：commercial alternating voltage of
1φ100V,200V,3φ200V).This is because that if applied alternating current the direct
current motor will demagnetize.
3 Operating voltage range
The compressor should be operated in the range of rated voltage 10% , under standard condition
and overload condition of rated frequency (applied voltage to inverter).
It must be satisfied with item 5, 6, 7 and the overload condition should not be continuous.
But the standard condition and overload condition mentioned here refer to condition that specified
in GB/T 7725. (The standard condition refers to the rating cooling condition and the overload
condition refers to the maximum operating condition.)
4 Operating temperatures and pressures
The operating temperatures and pressures of a compressor should be within the range shown in
the table 1.

DC INVERTER COMPRESSOR CRITERIA
PAGE：6/32
Table 1
Item Operating Envelope
Refrigerant R410A
（see graph 1a）
R134a
（see graph 1b）
Discharge pressure
MPa{kgf/cm2G}
4.2MPa {41.8} MAX
（condensing temperature : 65℃） In the
range mentioned in chart 2(a).
2.63MPa {25.85} MAX
（condensing temperature : 80℃） In the
range mentioned in chart 2(b).
Suction Pressure
MPa{kgf/cm2G}
0.272~1.652 MPa {1.8 ~ 15.5kgf/cm2G}
It can also be 0.101～0.272 MPa{0 ~
1.8kgf/cm2G} when in transition , but
should not be used when it is less than
0.101MPa{0kgf/cm2G}.
0.106~ 0.665MPa{0.08~ 5.78kgf/cm2G}
It can also be 0.101 ~ 0.106MPa {0 ~
0.08kgf/cm2G}when in transition , but
should not be used when it is less than
0.101MPa{0kgf/cm2G}.
Compressor case bottom temp 99℃or below and 6 degrees higher than condensing temperature
Motor winding temp. St andard load condition： overload condition ：
Rated voltage:： 105℃ MAX
R.Voltage±10%:
R.Voltage±10%:
120℃MAX
Accumulator temp Higher than outlet pipe of evaporator
Notes: Overload condition should not be continuous.
-35 -30 -25 -20 -15 -10 -5 0 5 10 15 20 25 30
Evaporating temperature(℃)
Condensening Temperature（℃）
5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80
P1
P2
P3
P4
P5
P6
P7
Graph 1a Graph 1b
P1 P2 P3 P4 P5 P1 P2 P3 P4 P5 P6 P7
Condensing
temperature 65℃25℃25℃35℃65℃80℃25℃10℃10℃52℃70℃80℃
Evaporation
Temperature 25℃25℃-30℃-30℃-5℃25℃25℃10℃-25℃-25℃-15℃5℃

DC INVERTER COMPRESSOR CRITERIA
PAGE：7/32
5 Pressure difference between suction and discharge
In all allowable rotational speed range, the difference of pressure should be more than
0. 39MPa{4kgf/cm2}. But if there is no problem of noise when assembled in air conditioner,
it can also below this value.
6 Discharge pipe temperature
Discharge pipe temperature is measured at a distance 300mm from the surface of compressor
and should be less than 110℃. The tip of the thermocouple is fixed by soldering when
measuring discharge pipe temperature .Furthermore, soldering point is covered with urethane
foam to prevent the effect of wind.
7 Air leakage test pressure
The pressure should be less than 4.32MPa{42kgf/cm2G}.
8 Oil back and oil level
The oil should be returned continuously to the compressor and the structure of the refrigerating
system should not make oil stay in the system. The oil level in compressor should be satisfied
with chart 2.If not keep the oil level, the shortage will occur, and influence the reliability
of the compressor.(please check the oil level in the compressor with the sight glass which supplied
form SHEC.
9 Dust of compressor hermetic terminals
Compressor hermetic terminals should be mounted with specified cover in right way to prevent
dust entering, and should be used in direction which dust is hard to enter in.
10 Lead wire of compressor hermetic terminals
Measuring the temperature of hermetic terminals , lead wire should be resist to the temperature
and be clamped so as not in touch with the surface of compressor and pipe.

DC INVERTER COMPRESSOR CRITERIA
PAGE：8/32
11 Start-stop frequency
The frequency should be less than 6 times per hour. Operating time from start to stop should
be more than 3 minutes. Stopping time should be more than 3minutes. But oil level should be
met to item 8. Suction and discharge pressure should balance completely before
restarting.
12 Rate of rotational speed change
The rate of compressor rotational speed (acceleration) should be less than 133min-1/s, But if
The variable range is below 120min-1, rate can also be less than 600min-1 when rotational
Speed is reduced to avoid temporary over- current. The change of compressor rotational
speed is referred to chart 3.
13 Air and moisture in refrigerating system
The degree of vacuum in refrigerating system should be less than 20Pa (150×10－3mmHg) at
room temperature just before charging refrigerant. The quantity of water should be less than
0.2ml.
14 Impurities in refrigerating system
(1) The weight of residue on the inside surface of the heat exchanger and tube should be less
than 0.08g/m2. But metallic dust should not be permitted in the system. This value means the
weight of foreign residue collected by filer paper after washing inside surface of
the heat exchanger tubes with R-11.
(2) Prevent the impurities from entering into the enclosed unit system used R410A. When the impurities
entered into the enclosed system, it will damage the moving mechanism parts and result
in the capillary depositing.
(3) Eliminate all system contaminants such as trichlorethylene, alkalies, soaps, oil, acids &
washing fluid used at machining heat exchanger and tubes.