Dettson GREE E Series Bedienungsanleitung

Service Manual

E Series Normal-temperature Versati Water Heater

Contents

Product Data ..................................................................................................................1

1 Product Data ...............................................................................................................1

1.1 Lineup ...............................................................................................................................1

1.2 Nomenclature....................................................................................................................1

1.3 Product Features ..............................................................................................................1

1.4 Operating Principle ..........................................................................................................3

1.5 Technical Data ..................................................................................................................4

2 Outline Dimensions....................................................................................................7

2.1 Outline Dimensions of the Outdoor Unit ..........................................................................7

2.2 Outline Dimensions of the Indoor Unit ..............................................................................7

3 Explosive Views and Part Lists.................................................................................8

4 Supply Scope............................................................................................................10

Model Selection ........................................................................................................... 11

1 Installation Example................................................................................................. 11

2 Model Selection ........................................................................................................13

2.1 Speculations of Power Supply ........................................................................................13

2.2 Operation Conditions ......................................................................................................13

2.3 Flowchart of Model Selection..........................................................................................13

2.4 Design Principle ..............................................................................................................14

3 Selection of the Underoor Coils............................................................................14

3.1 Calculation of Unit Load for Floor Heating......................................................................14

3.2 Selection of Tube Spacing of the Underoor Coils .........................................................14

3.3 Selection of Loop Quantity of Coils for Each Room........................................................14

4 Quantity and Location of the Water Manifolds ......................................................15

4.1 Design Requirements on Loop Quantity for Circulation Water .......................................15

4.2 Requirements on Installation of the Water Manifold .......................................................17

5 Selection of FCU.......................................................................................................17

5.1 FCU Type Selection ........................................................................................................17

5.2 Matching of Capacity ......................................................................................................17

6 Selection of the Water Tank..................................................................................... 18

6.1 Specications of the Water Tank.....................................................................................18

6.2 Volume Selection of the Water Tank ...............................................................................18

7 Examples for Model Selection.................................................................................19

7.1 General Introduction to the Example Project .................................................................19

7.2 Heat Load Calculation.....................................................................................................19

7.3 Model Selection ..............................................................................................................20

Control..........................................................................................................................21

1 Integral Control Concept ......................................................................................... 21

1.1 Control Principle Diagram ...............................................................................................21

1.2 Control Flowchart............................................................................................................24

2 Main Control Logics.................................................................................................24

2.1 Cooling............................................................................................................................24

2.2 Heating............................................................................................................................25

2.3 Water Heating ...............................................................................................................25

2.4 Shutdown ........................................................................................................................26

2.5 Control to the Compressor..............................................................................................26

2.6 Control to the Fan ...........................................................................................................26

2.7 Control to the 4-way Valve ..............................................................................................26

2.8 Control to the Water Pump .............................................................................................26

2.9 Control the Electronic Expansion Valve ..........................................................................27

2.10 Protection Control .........................................................................................................27

3 Control Panel ............................................................................................................28

3.1 External View ..................................................................................................................28

3.2 Operation Instructions.....................................................................................................30

UNIT INSTALLATION ...................................................................................................59

1 Installation Guides ...................................................................................................59

1.1 Installation Position of the Outdoor Unit..........................................................................59

1.2 Installation Positions of the Indoor Unit...........................................................................60

1.3 Matters Need Attention ...................................................................................................60

2 Field Supplied Pipes and Valves............................................................................. 60

3 Service Tools ............................................................................................................61

4 Installation Instructions...........................................................................................62

4.1 Installation Examples ......................................................................................................62

4.2 Pre-Installation ................................................................................................................63

4.3 Selection of Installation Location ....................................................................................63

4.4 Installation of outdoor unit...............................................................................................64

4.5 Installation of Indoor Unit ................................................................................................65

4.6 Connection of Pipeline....................................................................................................69

4.7 Installation of Insulated Water Tank ................................................................................71

4.8 Electric Wiring .................................................................................................................73

4.9 Wiring Diagram ...............................................................................................................74

4.10 Wiring of the Terminal Board ........................................................................................80

4.11 Wiring of the 2-Way Valve .............................................................................................80

4.12 Wiring of the 3-Way Valve.............................................................................................81

4.13 Wiring of Other Auxiliary Heat Sources.........................................................................82

4.14 Wiring of the Gate-Controller ........................................................................................82

4.15 Wiring of the Remote Air Temperature Sensor .............................................................82

4.16 Wiring of the Thermostat...............................................................................................83

4.17 Wiring of the Control .....................................................................................................84

5 Commissioning and Trial Run.................................................................................87

5.1 Check before Startup......................................................................................................87

5.2 Trial Run..........................................................................................................................88

TEST OPERATION & TROUBLESHOOTING & MAINTENANCE............................... 89

1 Pre-check ..................................................................................................................89

1.1 Check for Wiring .............................................................................................................89

1.2 Check for the Water System ...........................................................................................89

1.3 Check for the Communication System............................................................................90

1.4 Trial Run..........................................................................................................................91

2 Error Code List .........................................................................................................91

3 Flow Chart of Troubleshooting ...............................................................................93

3.1 Compressor High-pressure Protection E1 ......................................................................93

3.2 Compressor Low- pressure Protection E3 .....................................................................94

3.3 Compressor Discharge Temp Protection E4...................................................................94

3.4 Overload Protection of Compressor or Driver Error........................................................95

3.5 DC Fan Error EF .............................................................................................................95

3.6 Temperature Sensor Error ..............................................................................................96

3.7 Communication Malfunction E6 ......................................................................................96

3.8 Capacity Switch Error (Code:"E5") .................................................................................97

4 Diagnosis of Drive....................................................................................................97

4.1 Diagnosis Flowchart of Drive of Single-phase Unit and Three-phase Unit.....................97

5 Daily Maintenance and Repair...............................................................................101

5.1 Daily Maintenance ........................................................................................................101

5.2 Troubleshooting ............................................................................................................101

5.3 Repair ...........................................................................................................................102

Air-to-water Heat Pump Split Versati

SPLIT

TYPE

Product Data

1 Product Data

1.1 Lineup

1.1.1 Main Unit

Series Model Product Code

Cooling

Capacity

(kW)

Heating

Capacity

(kW)

Power

Supply Refrigerant Image

VERSATI II

GRS-

CQ16Pd/

NaE-D

ER01001490 49474

(14.5)

52886

(15.5)

208/230VAC

60Hz R410A

1.2 Nomenclature

1.2.1 Main Unit

G RS - C Q 16 Pd / Na E -D (O)

1 2 3 4 5 6 7 8 9 10

NO. Description Options

1 GREE G-GREE Air to water heat pump

2 Heat Pump Water Heater RS

3 Heating Mode S= Static; C=Circulating

4 Function Q=Multi-function; Omit=Single-function

5 Nominal Heating Capacity 6.0=6.0kW; 8.0=8.0kW;10=10kW; 12=12kW; 14=14kW; 16=16kW

6 Compressor Style Pd=DC Inverter; Omit=On/O󰀨

7 Refrigerant Na=R410A

8 Design Serial Number B,C,D,E......

9 Power Supply D=208/230V,~,60Hz

10 Indoor and Outdoor Unit Code I=Indoor unit; O=Outdoor unit

1.3 Product Features

1.3.1 General

GREE air to water heat pump is a completely exible, energy e󰀩cient home heating system that extracts the

heat from the outside air, raises this heat to a higher temperature and then distribute warmth around the home

using under-oor heating, radiators or fan convector heat emitters.

Air-to-water Heat Pump Split Versati

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TYPE

1.3.2 Features

◆Wide Operation Range

Heating: -4~95°F(-20~35°C); Cooling: 50~118.4°F(10~48°C); Water Heating: -4~113°F(-20~45°C).

◆High-e󰀩ciency Component(Inverter pump, Inverter fan, Plate heat exchanger)

(1) The DC inverter fan can control the air volume accuratately and make the system run more stably and save

more energy.

(2) The high-e󰀩ciency plate heat exchanger will improve the unit’s performance largely at a low price.

◆All-in-one Design

(1) The unit can integrate with terminal units, like the radiator, oor heating device, FCU, water heating device,

solar kit, gas furnace etc. Versatile functions can meet various kinds of demands from di󰀨erent users and

enhance applicability of this product

(2) The all-in-one structure design can save more installation cost, reduce risks of refrigerant leak, and improve

safety and reliability of the system.

◆Brand-new Controller

(1) White appearance, exquisite design, and the wall-mounted design will facilitate installation.

(2) The dot-matrix display can show in both English and Chinese to show information in a more direct and

convenient way.

(3) The six-lattice display pattern will accommodate more information.

(4) The 12V JACK interface can supply power to the control separately and lengthen the communication

distance.

(5) The remote monitoring interface can monitor the unit through the Modbus interface and be integrated into

the BMS system.

◆Smart Control, Powerful Function

(1) The running mode can be switched freely. Furthermore, based on di󰀨erent demands, the holiday mode,

weather-dependent mode, quite timer, temperature timer and oor commissioning can activated.

(2) Multiple protections can make this product much safer. The added electric heater will prevent the plate heat

exchanger from being frostbitten owing to too low water temperature and resultantly extend the service life

of the product and enhance its safety and reliability.

(3) The newly developed smart defrosting control program, “only initiates the defrost function when necessary",

can bring more comfortability, avoid inadequacy of heat supply and ensure sustainable heat supply for the

users.

1.4 Operating Principle

Air-to-water Heat Pump Split Versati

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1.4.1 Schematic Diagram

29 30

23 25

Outdoor Unit

Indoor Unit

Field Supplied

3940

No. Name No. Name No. Name

1 Compressor 18 Liquid Temperature

Sensor of the PHE 35 Water Tank

2Discharge Temperature

Sensor 19 Gas Temperature Sensor

of the PHE 36 Leaving Water Temperature

Sensor of the Solar System

3 High Pressure Switch 20 Plate-type Exchanger 37 Flow Switch for the Solar

System

4 Pressure Sensor 21

Leaving Water

Temperature

of the PHE

38 Water Pump for the Solar

System

5 4-way Valve 22

Entering Water

Temperature

of the PHE

39 Solar Panel

6 Finned Exchanger 23 Automatic Exhaust Valve 40 Solar Panel Temperature Sensor

7Environment Temperature

Sensor 24 Electric Heater 41 Entering Water Temperature

for the Solar System

8Defrosting Temperature

Sensor 25 Safety Valve 42 Water Knockout Vessel

9 Filter 26 Expansion Tank 43 Electric 2-way Valve 1

10 Electronic Expansion Valve 27

Leaving Water

Temperature

of the Electric Heater

44 Floor Radiator

11 Filter 28 Water Pump 45 Water Collector

12 Liquid Valve 29 Flow Switch 46 FCU

13 Gas Valve 30 Leaving Water Pipe

Connector 47 Pressure Di󰀨erential Bypass

Valve

14 Filter 31 Entering Water Pipe

Connector 48 Water Tank Temperature

Sensor 2

15 Vapor-liquid Separator 32 Water Filter 49 Liquid Valve Connector

16 Suction Temperature Sensor 33 Electric 3-way Valve 2 50 Gas Valve Connector

17 Pressure Sensor 34 Water Tank Temperature

Sensor 1

Air-to-water Heat Pump Split Versati

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1.5 Technical Data

1.5.1 Parameter List

Model GRS-CQ16Pd/NaE-D

Product Code ER01001490

Capacity*1 Cooling(oor cooling) Btu/h(kW) 49474(14.5)

Heating(oor heating) Btu/h(kW) 52886(15.5)

Power Input*1 Cooling(oor cooling) kW 3.8

Heating(oor heating) kW 3.75

EER*1(oor cooling) (Btu/h)/W, (W/W) 13.02(3.82)

COP*1(oor heating) (Btu/h)/W, (W/W) 14.10(4.13)

Capacity*2 Cooling(for Fan coil) Btu/h(kW) 33096(9.7)

Heating(Fan coil or Radiator) Btu/h(kW) 49474(14.5)

Power Input*2 Cooling(for Fan coil) kW 3.3

Heating(Fan coil or Radiator) kW 4.5

EER*2(for Fan coil) (Btu/h)/W, (W/W) 10.03(2.94)

COP*2(Fan coil or Radiator) (Btu/h)/W, (W/W) 10.99(3.22)

Refrigerant charge volume oz(kg) 127(3.6)

Sanitary water Temperature °F (°C) 104~176(40~80)

Outdoor Unit Model GRS-CQ16Pd/NaE-D(O)

Outdoor Unit Product Code ER010W1490

Sound

Pressure

Level

cooling dB(A) 58

heating dB(A) 58

Dimensions

(W×D×H)

Outline inch(mm) 35-7/16×16-1/4×53(900×412×1345)

Packaged inch(mm) 39-5/16×18-1/16×59-5/8(998×458×1515)

Net weight/Gross weight lb(kg) 235.9/258.0(107/117)

Indoor Unit Model GRS-CQ16Pd/NaE- D(I)

Indoor Unit Product Code ER010N1490

Sound

Pressure

Level

cooling dB(A) 31

heating dB(A) 31

Dimensions

(W×D×H)

Outline inch(mm) 38-5/8×12-3/4×19-11/16(981×324×500)

Packaged inch(mm) 41-1/16×15-9/16×23-

15/16(1043×395×608)

Net weight/Gross weight lb(kg) 121.3/141.1(55/64)

Notes

(a) “*1” indicates the capacity and power input are tested based on the conditions below:

Cooling:

Indoor Water Temperature: 73.4°F/64.4°F(23°C/18°C); Outdoor Temperature: 95°F DB/75.2°F WB(35°C

DB/24°C WB)

Heating:

Indoor Water Temperature: 86°F/95°F(30°C/35°C); Outdoor Temperature: 44.6°F DB/42.8°F WB(7°C DB/6°C

WB)

(b) “*2” indicates the capacity and power input are tested based on the conditions below:

Cooling:

Indoor Water Temperature: 53.6°F/45°F(12°C/7°C); Outdoor Temperature: 95°F DB/75.2°F WB(35°C DB/24°C

WB)

Heating:

Indoor Water Temperature: 104°F/113°F(40°C/45°C); Outdoor Temperature: 44.6°F DB/42.8°F WB(7°C DB/6°C

WB)

Air-to-water Heat Pump Split Versati

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1.5.2 Nominal Working Conditions

Item

Water Side Air side

Entering Water Temp

°F(°C)

Leaving Water

Temperature °F(°C)

Dry Bulb Temperature

°F(°C)

Wet Bulb Temperature

°F(°C)

Floor Heating 86(30) 95(35) 44.6(7) 42.8(6)

FCU Heating 104(40) 113(45) 44.6(7) 42.8(6)

Floor Cooling 73.4(23) 64.4(18) 95(35) —

FCU Cooling 53.6(12) 45(7) 95(35) —

Water Heating 50(10) 122(50) 44.6(7) 42.8(6)

1.5.3 Operation Range

Item Water Side Air side

Leaving Water Temperature °F(°C) Environment Dry Bulb Temperature °F(°C)

Cooling 45~77(7~25) 50~118.4(10~48)

Heating 77~131(25~55) -4~95(-20~35)

Water Heating 104~176(40~80) (Water Tank Temperature) -4~113(-20~45)

Note: when operating conditions are out of the range listed above, please contact GREE.

1.5.4 Electric Data

Model

Power Supply Leakage Switch Minimum Sectional

Area of Earth Wire

Minimum Sectional

Area of Power

Supply Wire

V,Ph,Hz (A) / /

GRS-CQ16Pd/NaE-D(O)

208/230VAC,60Hz

40 AWG8 2×AWG8

GRS-CQ16Pd/NaE-D(I) 30 AWG10 2×AWG10

The power of the auxiliary electric heater for the water tank is not allowed to exceed 10236Btu/h(3kW).

Notes

(a) Leakage Switch is necessary for additional installation. If circuit breakers with leakage protection are in use,

action response time must be less than 0.1 second, leakage circuit must be 30mA.

(b) The above selected power cable diameters are determined based on assumption of distance from the

distribution cabinet to the unit less than 75m. If cables are laid out in a distance of 75m to 150m, diameter of

power cable must be increased to a further grade.

(d) All electrical installation shall be carried out by professional technicians in accordance with the local laws

and regulations.

(e) Ensure safe grounding and the grounding wire shall be connected with the special grounding equipment of

the building and must be installed by professional technicians.

(f) The specications of the breaker and power cable listed in the table above are determined based on the

maximum power (maximum amps) of the unit.

(g) The specications of the power cable listed in the table above are applied to the conduit-guarded multi-wire

copper cable (like, YJV XLPE insulated power cable) used at 40°C and resistible to 90°C(see IEC 60364-5-52).

If the working condition changes, they should be modied according to the local applicable standards.

(h) The specifications of the breaker listed in the table above are applied to the breaker with the working

temperature at 40°C. If the working condition changes, they should be modied according to the related local

applicable standard.

(i) A circuit breaker must be added to the fixed line. The circuit breaker is all-pole disconnected and the

breaking distance of the contact is at least 3mm.

Air-to-water Heat Pump Split Versati

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1.5.5 Capacity Correction

◆Cooling Capacity Correction

GRS-CQ16Pd/NaE-D

Performance correction

Leaving Chilled Water °C (°F)Ambient Temperature °C (°F)

25(77) 30(86) 35(95) 40(104) 45(113)

5(41.0) 0.995 0.955 0.905 0.855 0.805

6(42.8) 1.045 1.005 0.955 0.905 0.855

7(44.6) 1.090 1.050 1.000 0.950 0.900

8(46.4) 1.145 1.102 1.052 1.000 0.950

9(48.2) 1.190 1.150 1.100 1.050 1.002

10(50.0) 1.245 1.200 1.150 1.100 1.050

11(51.8) 1.290 1.250 1.202 1.152 1.102

12(53.6) 1.340 1.300 1.252 1.200 1.152

13(55.4) 1.390 1.350 1.302 1.252 1.202

14(57.2) 1.442 1.402 1.350 1.302 1.252

15(59.0) 1.490 1.450 1.400 1.350 1.302

18(64.4) 1.539 1.502 1.451 1.402 1.350

Calculation of actual cooling capacity: actual cooling capacity = nominal cooling capacity x cooling capacity

correction coe󰀩cient.

◆Heating Capacity Correction

GRS-CQ16Pd/NaE-D

Performance Correction

Outow

Heated

Water °C(°F)

Ambient Temperature °C(°F)

-15(5) -10(14) -5(23) 0(32) 5(41.0) 10(50) 15(59.0) 20(68.0) 25(77.4)

30(86) 0.81 0.91 1.00 1.10 1.18 1.26 1.35 1.41 1.45

35(95) 0.74 0.84 0.93 1.03 1.11 1.19 1.28 1.36 1.41

40(104) 0.67 0.77 0.87 0.96 1.04 1.12 1.20 1.25 1.31

45(113) 0.60 0.70 0.80 0.89 0.97 1.05 1.13 1.19 1.25

50(122) 0.53 0.63 0.73 0.82 0.90 0.98 1.06 1.11 1.18

55(131) 0.46 0.56 0.66 0.74 0.83 0.90 0.98 1.05 1.10

Calculation of actual heating capacity: actual heating capacity = nominal heating capacity x heating capacity

correction coe󰀩cient.

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