Kaysun KEM-30 DRS4 Product guide

ENGINEERING DATA BOOK
DC Inverter Air-cooled Modular Chiller
KEM-30 DRS4
KEM-60 DRS4
KEM-30 DRS4 KH
KEM-60 DRS4 KH

CONTENTS
DC Inverter Chiller
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CONTENTS
Part 1 General Informaon .............................................................................. 2
Part 2 Engineering Data ................................................................................. 14
Part 3 Installaon and Field Sengs .............................................................. 37

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Part 1
General Informaon
1 Aqua Tempo Super II System................................................................. 3
2 Unit Capacies...................................................................................... 4
3 Unit Combinaons................................................................................ 5
4 System and Design Unit Selecon ......................................................... 6
5 Typical Applicaons .............................................................................. 8

Part 1 - General Information
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1 Aqua Tempo Super II System
1.1 System Schemac
Figure 1-1.1: System schemac
M
aster unit
Expansion tank
Water replenishment valve
Water discharge valve
Differential pressure
by-pass valve
Drain valve
Two-way valve
Three-way valve
FCU
Auxiliary electric heater
unit
unit
Y-type filter,
requiring≥16 mesh
Slave unit
M
ax 16 units
FCU
FCU
Stop valve Pressure gauge Gate valve
Flexible joint
Y-shaped filter Thermometer Circulating pump Check valve
Automatic discharge valve
Legend
Max 4 units
Aqua Tempo Super II is an integrated air-to-water space heang and space cooling heat pump system. The outdoor heat
pump system extracts heat from the outdoor air and transfers this heat through refrigerant piping to the plate heat
exchanger in the hydronic system. The heated water in the hydronic system circulates to low temperature heat emiers
(oor heang loops or low temperature radiators) to provide space heang. The 4-way valve in the outdoor unit can
reverse the refrigerant cycle so that the hydronic system can provide chilled water for cooling using fan coil units.
The heang capacity of heat pumps decreases with ambient temperature. Aqua Tempo Super II is reserved an auxiliary
electric heater control port to provide addional heang capacity for use during extremely cold weather when the heat
pump capacity is insucient. The auxiliary electric heater also serves as a backup in case of heat pump malfuncon and
for an-freeze protecon of the outside water piping in winter.

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2 Unit Capacies
Table 1-2.1: Aqua Tempo Super II unit capacity range and unit appearances
Capacity 30kW 60kW
Model KEM-30 DRS4
KEM-30 DRS4 KH
KEM-60 DRS4
KEM-60 DRS4 KH
Appearance
Power supply 380-415V/3Ph/50Hz

Part 1 - General Information
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3 Unit Combinaons
Table 1-4.1: Unit Combinaons
System Capacity (kW) Numbers of units Modules
30kW 60kW
30 1
60 1
90 2  
120 2
150 3 
180 3
210 4  
240 4 

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4 System and Design Unit Selecon
4.1 Selecon Procedure
Step 1: Total heat load calculaon
Calculate condioned surface area
Select the heat emiers (type, quantity, water temperature and heat load)
Step 2: System configuraon
Decide whether to enable or disable auxiliary electric heater
Step 3: Selecon of outdoor units
Determine required total heat load on outdoor units
Set capacity safety factor
Select power supply
Provisionally select Aqua Tempo Super II unit capacity1based on nominal
capacity
Correct capacity of the outdoor units for the following items:
Outdoor air temperature / Outdoor humidity / Water outlet temperature2/
Altude / An-freeze type
Is corrected Aqua Tempo Super II unit capacity ≥Required total heat load
on outdoor units3
Yes No
Aqua Tempo Super II
system selecon is
complete
Select a larger model or enable
auxiliary electric heater operaon
Notes:
1. Up to 4 units can be connected together, giving a system cooling/heang capacity range from 30kW to 240kW.
2. If the required water temperatures of the heat emiers are not all the same, the Aqua Tempo Super II’s outlet water temperature seng should be set at
the highest of the heat emier required water temperatures. If the water outlet design temperature falls between two temperatures listed in the outdoor
unit’s capacity table, calculate the corrected capacity by interpolaon.
3. If the outdoor unit selecon is to be based on total heang load and total cooling load, select Aqua Tempo Super II units which sasfy not only the total
heang load requirements but also the total cooling load requirements.

Part 1 - General Information
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4.2 Aqua Tempo Super II Leaving Water Temperature (LWT) Selecon
The recommended design LTW ranges for dierent types of heat emier are:
 For oor heang: 30 to 35⁰C
 For fan coil units: 30 to 45⁰C
 For low temperature radiators: 40 to 50⁰C
4.3 Opmizing System Design
To get the most comfort with the lowest energy consumpon with Aqua Tempo Super II, it is important to take account
of the following consideraons:
 Choose heat emiers that allow the heat pump system to operate at as low a hot water temperature as possible
whilst sll providing sucient heang.

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5 Typical Applicaons
5.1 Space Heang Through Floor Heang Loops
Floor heang Loops are used for spaces heang.
Figure 1-6.1: Space heang through oor heang loops (standard unit without hydronic module)
M
aster unit
Expansion tank
Water replenishment valve
Water discharge valve
Floor
Heating
Loops
Floor
Heating
Loops
Floor
Heating
Loops
Differential pressure
by-pass valve
Drain valve Two-way valves
Auxiliary electric heater
unit
unit
Y-type filter,
requiring≥16 mesh
Slave unit
M
ax 16 units
Stop valve Pressure gauge Gate valve
Flexible joint
Y-shaped filter Thermometer Circulating pump Check valve
Automatic discharge valve
Legend
Max 4 units

Part 1 - General Information
DC Inverter Chiller
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Figure 1-6.2: Space heang through oor heang loops (customized unit with built-in hydronic module)
M
aster unit
Expansion tank
Water replenishment valve
Water discharge valve
Differential pressure
by-pass valve
Drain valve
Auxiliary electric heater
unit
unit
Y-type filter,
requiring≥16 mesh
Slave unit
M
ax 16 units
Floor
Heating
Loops
Floor
Heating
Loops
Floor
Heating
Loops
Two-way valve
Two-way
valve
Two-way
valve
One-way
valve
One-way
valve
Stop valve Pressure gauge Gate valve
Flexible joint
Y-shaped filter Thermometer Circulating pump Check valve
Automatic discharge valve
Legend
Max 4 units
M
aster unit
Expansion tank
Water replenishment valve
Water discharge valve
Differential pressure
by-pass valve
Drain valve
Auxiliary electric heater
unit
unit
Y-type filter,
requiring≥16 mesh
Slave unit
M
ax 16 units
Floor
Heating
Loops
Floor
Heating
Loops
Floor
Heating
Loops
Two-way valve
Two-way
valve
Two-way
valve
One-way
valve
One-way
valve
Stop valve Pressure gauge Gate valve
Flexible joint
Y-shaped filter Thermometer Circulating pump Check valve
Automatic discharge valve
Legend
Max 4 units

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5.2 Space Heang and Space Cooling Through Fan Coil Unit
Fan coil units are used for space heang and cooling.
Figure 1-6.3: Space heang and space cooling through fan coil unit (standard unit without hydronic module)
M
aster unit
Expansion tank
Water replenishment valve
Water discharge valve
Differential pressure
by-pass valve
Drain valve
Two-way valve
Three-way valve
FCU
Auxiliary electric heater
unit
unit
Y-type filter,
requiring≥16 mesh
Slave unit
FCU
FCU
Stop valve Pressure gauge Gate valve
Flexible joint
Y-shaped filter Thermometer Circulating pump Check valve
Automatic discharge valve
Legend
Max 4 units

Part 1 - General Information
DC Inverter Chiller
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Figure 1-6.4: Space heang and space cooling through fan coil unit (customized unit with built-in hydronic module)
M
aster unit
Expansion tank
Water replenishment valve
Water discharge valve
Differential pressure
by-pass valve
Drain valve
Two-way valve
Three-way valve
FCU
Auxiliary electric heater
unit
unit
Y-type filter,
requiring≥16 mesh
Slave unit
M
ax 16 units FCU
FCU
Two-way
valve
Two-way
valve
One-way
valve
One-way
valve
Stop valve Pressure gauge Gate valve
Flexible joint
Y-shaped filter Thermometer Circulating pump Check valve
Automatic discharge valve
Legend
Max 4 units

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5.3 Space Heang Through Floor Heang Loops And Space Cooling Through Fan Coil Unit
Floor heang loops and fan coil units are used for space heang and fan coil units are used for space cooling. In space
cooling mode, the 2-way valve is closed to prevent cold water entering the oor heang loops.
Figure 1-6.5: Space heang through oor heang loops and space cooling through fan coil unit (standard unit without hydronic module)
M
aster unit
Expansion tank
Water replenishment valve
Water discharge valve
Differential pressure
by-pass valve
Drain valve
Two-way valve
Three-way valve
FCU
Auxiliary electric heater
unit
unit
Y-type filter,
requiring≥16 mesh
Slave unit
FCU
FCU
Floor
Heating
Loops
Floor
Heating
Loops
Floor
Heating
Loops
Two-way valves
Stop valve Pressure gauge Gate valve
Flexible joint
Y-shaped filter Thermometer Circulating pump Check valve
Automatic discharge valve
Legend
Max 4 units

Part 1 - General Information
DC Inverter Chiller
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Figure 1-6.6: Space heang through oor heang loops and space cooling through fan coil unit (customized unit with built-in hydronic module)
M
aster unit
Expansion tank
Water replenishment valve
Water discharge valve
Differential pressure
by-pass valve
Drain valve
Two-way valve
Three-way valve
FCU
Auxiliary electric heater
unit
unit
Y-type filter,
requiring≥16 mesh
Slave unit
M
ax 16 units FCU
FCU
Floor
Heating
Loops
Floor
Heating
Loops
Floor
Heating
Loops
Two-way valve
Two-way
valve
Two-way
valve
One-way
valve
One-way
valve
Stop valve Pressure gauge Gate valve
Flexible joint
Y-shaped filter Thermometer Circulating pump Check valve
Automatic discharge valve
Legend
Max 4 units

Part 2
Engineering Data
1 Specicaons...................................................................................... 15
2 Dimensions and Center of Gravity....................................................... 18
3 Piping Diagrams .................................................................................. 20
4 Wiring Diagrams ................................................................................. 24
5 Capacity Tables ................................................................................... 26
6 Operang Limits ................................................................................. 28
7 Hydronic Performance ........................................................................ 29
8 Sound Levels....................................................................................... 31
9 Accessories ......................................................................................... 36
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1 Specicaons
Table 2-1.1: Specicaons
kW 30 60
Model name KEM-30 DRS4 KEM-60 DRS4
Power supply V/Ph/Hz 380-415/3/50
Cooling 1
Capacity kW 27.5 55
Rated input kW 10.3 21.5
EER 2.67 2.55
SEER 4.62 4
Heang2
Capacity kW 32 62
Rated input kW 10 20
COP 3.2 3.1
SCOP 4.24 3.86
Seasonal space heang energy eciency class A++ A++
Max. running current A 20 40.5
Air side heat
exchanger
Type Finned tube Finned tube
Fan motor type DC motor DC motor
Fan motor rated input W 750 750
Fan motor quanty 1 2
Air ow rate m3/h 12,500 24,000
Water side heat
exchanger
Type Plate Plate
Volume L2.44 5.17
Rated water ow m3/h 5 9.8
Water ow range m3/h 4.0 to 6.0 7.8 to 11.8
Water pressure drop kPa 55 61
Refrigerant system
Refrigerant type R32 R32
Refrigerant charge kg 7.9 14
Throle type EXV EXV + Capillary
Sound power level dB(A) 78 86
Sound pressure level3dB(A) 64.8 71.3
Net dimensions (W×H×D) mm 1870×1175×1000 2220×1325×1055
Packed dimensions (W×H×D)- Wooden foot mm 1910×1370×1035 2250×1530×1090
Net/Gross weight kg 300/355 480/540
Pipe connecons Water inlet/outlet mm DN40 DN50
Water pressure range MPa 0.05 to 1.0 0.05 to 1.0
Water ow switch Acon ow m3/h 3.6± 10% 7± 10%
Vent Valve Max working pressure Mpa 1.0 1.0
Safety valve Acon pressure Mpa 0.6 ± 10% 0.6 ± 10%
Controller KCCHT-05 MODBUS KCCHT-05 MODBUS
Operang temperature
range
Cooling °C -10 to 43 -10 to 43
Heang °C -14 to 30 -14 to 30
Water outlet
temperature range
Cooling4°C 0 to 20*5 0 to 20*5
Heang °C 25 to 54 25 to 54
Notes:
1. Cooling: Chilled water inlet/outlet temp.12/7°C; outdoor ambient temp. 35°C DB.
2. Heang: Warm water inlet/outlet temp. 40/45°C; outdoor ambient temp. 7°C DB/6°C WB.
3. Sound pressure level is measured at a posion 1m in front of the unit and 1.1m above the oor in a semi-anechoic chamber.
4. Capacity and eciency data calculated in accordance with EN14511, EN 14825.
5. Cooling outlet water temperature from 0 to 5°C didn’t jusfy by Quality Control department. If you have such requirement, Please inform
your supplier.
Part 2 - Engineering Data
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Table 2-1.2: Specicaons
kW 30 60
Model name KEM-30 DRS4 KH KEM-60 DRS4 KH
Power supply V/Ph/Hz 380-415/3/50
Cooling 1
Capacity kW 27.5 55
Rated input kW 11 23
EER 2.5 2.39
SEER 4.25 4.03
Heang2
Capacity kW 32 62
Rated input kW 10.7 21.5
COP 2.99 2.88
SCOP 3.99 3.72
Seasonal space heang energy eciency class A++ A+
Max. running current A21,5 43.5
Air side heat
exchanger
Type Finned tube Finned tube
Fan motor type DC motor DC motor
Fan motor rated input W750 750
Fan motor quanty 1 2
Air ow rate 12,500 24,000
Water side heat
exchanger
Type Plate Plate
Volume L2.44 5.17
Rated water ow m3/h 5 9.8
Water ow range m3/h 4.0 to 6.0 7.8 to 11.8
Pump head m 15 15
Water pressure drop kPa 130 200
Refrigerant system
Refrigerant type R32 R32
Refrigerant charge kg 7.9 14
Throle type EXV EXV + Capillary
Sound power level dB(A) 78 86
Sound pressure level3dB(A) 65.1 71.4
Net dimensions (W×H×D) mm 1870×1175×1000 2220×1325×1055
Packed dimensions (W×H×D)- Wooden foot mm 1910×1370×1035 2250×1530×1090
Net/Gross weight kg 315/370 515/575
Pipe connecons Water inlet/outlet mm DN40 DN50
Water pressure range MPa 0.05 to 1.0 0.05 to 1.0
Water pump
Pump model name YKB-650-2-1 YKB-1500-2-1
Power supply 380-415 V/3Ph/50Hz 380-415 V/3Ph/50Hz
Rated power KW 0.65 1.5
Rated current A 1.6-1.8 3.15
Rated water ow m3/h 4.7 10
Rated pump head m 22.8 27.1
Rated speed r/min 2770-2820 r/min 2840-2870 r/min
Max operang temperature °C 55 55
Max operang pressure MPa 1.0 1.0
Power factor 0.82-0.72 0.87-0.82
Eciency 72.9%-73.9% 84.2%-84.9%
Resistance class IP55 IP55
Insulaon class F F
Net/Gross weight kg 11.9 /14.4 32.6 /35.1
Table connued on next page …
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Table 2-1.2: Specicaons(connued)
Expansion tank
Volume L4.2 12
Precharge pressure Mpa 0.15 0.15
Test pressure Mpa 1.0 1.0
Water ow switch Acon ow m3/h 3.6± 10% 7± 10%
Vent Valve Max working pressure Mpa 1.0 1.0
Safety valve Acon pressure Mpa 0.6 ± 10% 0.6 ± 10%
Controller KCCHT-05 MODBUS KCCHT-05 MODBUS
Operang temperature
range
Cooling °C -10 to 43 -10 to 43
Heang °C -14 to 30 -14 to 30
Water outlet
temperature range
Cooling4°C 0 to 20*5 0 to 20*5
Heang °C 25 to 54 25 to 54
Notes:
1. Cooling: Chilled water inlet/outlet temp.12/7°C; outdoor ambient temp. 35°C DB.
2. Heang: Warm water inlet/outlet temp. 40/45°C; outdoor ambient temp. 7°C DB/6°C WB.
3. Sound pressure level is measured at a posion 1m in front of the unit and 1.1m above the oor in a semi-anechoic chamber.
4. Capacity and eciency data calculated in accordance with EN14511, EN14825
5. Cooling outlet water temperature from 0 to 5°C didn’t jusfy by Quality Control department. If you have such requirement, Please inform your supplier.
Part 2 - Engineering Data
DC Inverter Chiller
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2 Dimensions and Center of Gravity
KEM-30 DRS4, KEM-30 DRS4 KH
Figure 2-2.1: KEM-30 DRS4, KEM-30 DRS4 KH dimensions and center of gravity (unit: mm)
Left view
Top view
470
204 485
485
200
Front view
Bottom view
Hole for anchor bolt ΦØ15
1870
680
1175
485
1000
530
926
800
37
barycenter
barycenter
Electric control
box side
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