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EQKC COMBI COOLER

FläktGroup 

DC_8931GB   20180202_R0

We reserve the right to make changes without prior notice

Installation and maintenance instructions  

2

WEIGHT

DUTY OF NOTIFICATION AND IN-SERVICE INSPECTION

Duty of notification

If the amount of refrigerant in a unit exceeds 10 kg the super-
visory authorities, generally the environmental health depart-
ment, must be informed. This information must be provided 
well in advance of installation. More information about this is 
contained in local refrigerant legislation.

Leak tracing during installation and in-service inspection

A leakage inspection must be carried out during installation
if the unit contains more than 3 kg of refrigerant (see local 
restrictions). If the unit contains between 3 kg and 30 kg of 
refrigerant, the unit must be inspected for leakage at least 
every twelve months. This conforms to the EU regulation on 
fluorinated greenhouse gases 842/2006.

LIFTING AND TRANSPORT

The unit can be lifted by its lifting eyes if its weight does not 
exceed 1,050 kg. If the unit weighs more than 1,050 kg, it must 
be lifted by a forklift truck from below using the specified holes. 
Lifting the unit other than by using the specified holes can 
cause the unit to overturn due to the offset centre of gravity.

Requirements related to the floor

The floor must be level. This is to avoid torsional forces and 
stresses which could damage the internal pipework in the re-
frigerant circuit and brine system. The base frame must not
be removed.

Requirements related to siting

The unit must be installed in such a way that allows service
in accordance with this service manual.

L

L

L

L

1050 kg

MAX.

Important!

 

The unit’s centre of gravity is not in the centre
of the unit. Always take this into account when
lifting the unit.

Standard isolation

Min. weight

Max. weight

EQKC 014

551

606

EQKC 018

663

668

EQKC 023

745

825

EQKC 032

841

1016

EQKC 041

995

1120

Heavy isolation

Min. weight

Max. weight

EQKC 014

598

653

EQKC 018

660

715

EQKC 023

793

873

EQKC 032

895

1070

EQKC 041

1052

1177

Summary of Contents for EQKC 014

Page 1: ...303 2008 and the necessary protective equipment The necessary protective equipment should include safety goggles and gloves Automatic start Open and lock the cooling unit s main circuit breaker before starting any work Do NOT tread on the unit Use only original spare parts Disregarding any of the above points can lead to a serious safety risk and the withdrawal of the guarantee product liability W...

Page 2: ...2006 LIFTING AND TRANSPORT The unit can be lifted by its lifting eyes if its weight does not exceed 1 050 kg If the unit weighs more than 1 050 kg it must be lifted by a forklift truck from below using the specified holes Lifting the unit other than by using the specified holes can cause the unit to overturn due to the offset centre of gravity Requirements related to the floor The floor must be le...

Page 3: ...dication CP51 Operation Signal for slow valve closure Summation alarm Cooler alarm Unit interlocked by CP51 1 2 1 2 3 3 1 2 1 2 1 2 1 2 1 0 2 1 2 1 2 1 2 1 2 1 2 1 2 1 2 External Combi Cooler BMS Unit GH53 Room conden sation sensor GT53 Chilled beam water temperature sensor SV53 Chilled beam water valve actuator 1 G G0 G G0 Y G G0 Y Q11 Q12 2 3 4 1 2 3 1 2 3 1 2 3 4 1 2 3 1 2 3 24 V AC Gnd 0 10 V ...

Page 4: ...trol system eQ Control system Combi Cooler Styrsystem Combi Cooler ALARM 0 10 V Summation Alarm CP51 Operation 52 51 57 56 60 59 58 64 63 Styrsystem eQ Supply air coil actuator GO AR GO GP3 4 Z GO AC YR YH 24 VAC GO G START START NO C YC Alt Control signal heating HEATING Ventilställdon värme eQ Styrlåda M Y G0 G Y G0 G M Interlocking 61 62 Valve actuator heating Control box eQ ...

Page 5: ...ut the power to the entire cooling unit When performing work on the cooling unit always open and lock the main circuit breaker ELECTRICAL DATA FUSE PROTECTION AND AMOUNT OF REFRIGERANT This product contains fluorinated greenhouse gas R134A with a GWP factor of 1430 Refrigerant quantity 5 2 22 8 kg corresponding to 7 4 32 6 tonnes of CO2 equivalent Choice of cable The choice of cable depends on the...

Page 6: ...insu lation must be diffusion tight It must be possible to access bleed valves and drain valves following insulation Filter max gauge 500 μm It is essential that the water is free of impurities If not the heat transfer in the heat exchangers will be reduced as they get dirty In the worst case the exchanger can be permanently damaged The filter should be mounted on the water circuit s inlet to the ...

Page 7: ...ribution between the supply air and the chilled beam circuit The flow is both adjusted and measured with the STAD valve located inside the Combi Cooler The right flow over the supply air coil is available in the unit documentation The technical sales support division at FläktGroup has to be contacted if the unit documentation is not supplied at delivery It s summer case that the flow is adjusted f...

Page 8: ...ISSIONING Checklist BEFORE STARTUP CHECK THE FOLLOWING General Transport damage installation site good lighting level surface etc Condensation drain Oil level in compressors Runoff from the water filled condenser Refrigerant circuit Leakage of refrigerant leakage of compressor oil Crankcase heater in operation Electrical connection and control checking for loose cables Phase sequence and post tigh...

Page 9: ...rmation to personnel undertaken FUNCTION The compressors are connected in three cooling stages The outgoing water temperature depends on whether there is a risk of condensation in the chilled beams or not See Page 9 for a description of the control unit The air handling unit can be used for both supply air and extract air control The cooling unit must be interlocked by the extract air fan and main...

Page 10: ... main circuit should be approximately 12 C irrespective of how many compressors are in operation In normal operation the setpoint of the water to the chilled beam circuit is 15 C as standard Setpoint offset risk of condensation The compressors are controlled by the water temperature down stream of the evaporators The temperature in the main circuit must be approximately 6 C otherwise there is a ri...

Page 11: ...ut water temperature from cooling circuit 2 Screen 3 BeamWater In 15 2 Input water temperature to the chilled beam circuit Valve signal 085 Control signal to the chilled beam valve 0 100 0 10V Forced closing The text is displayed in the event of the forced closure of the chilled beam valve Screen 4 Setpoints when Normal running The setpoints applicable during normal operation i e when the condensa...

Page 12: ...s tripped 1 WaterTemp Alarm Ouput Temp circuit 1 is less than 3 C Reset the alarm relay 2 WaterTemp Alarm Ouput Temp circuit 2 is less than 3 C Reset the alarm relay 1 WatTemp Stop 300 KM1 stopped for 5 min if the temp in circuit 1 is less than 4 C 2 WatTemp Stop 300 KM2 stopped for 5 min if the temp in circuit 2 is less than 4 C 1 Capacity Alarm KM1 s Capacity switch has tripped Alarm locked for ...

Page 13: ...at least once a year Check the following 1 Evaporation condensation temperature Leakage inspection every 12 months in accordance with EU requirements 2 Hot vapour temperature 3 Expansion valve superheating of suction vapour 4 Safety equipment pressure switch trip function 5 Cooling capacity 6 Automation and control equipment functional inspection 7 Electrical equipment post tightening power connec...

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