FläktGroup EQKC 014, Инструкция по установке и обслуживанию

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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
10
Control
The cooling unit supplies cold water in the brine circuit to the
integrated supply air coil and to the chilled beam circuit. Hot
water enters the circuit via the integrated plate heat exchanger.
The valve governing the amount of water to the supply air coil
and plate heat exchanger is controlled by external control
equipment. The valve and valve actuator for the supply air coil
are mounted in the cooling unit, and are included in the deli-
very. The valve and valve actuator for the plate heat exchanger
are not included in the delivery, but are available as acces-
sories.
The cooling unit governs both the temperature to the main
circuit and to the chilled beam circuit. Both of these setpoints
change depending on whether the unit is in normal operation
or setpoint offset (risk of condensation).
Normal operation
The compressors are controlled by the return temperature from
the chilled beam circuit. If the system is correctly adjusted, the
output temperature in the 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 risk that the
adjustment will be incorrect.
In setpoint offset operation the setpoint of the water to the chilled
beam circuit is 17 °C as standard.
Outdoor
air
Chilled beam
circuit
Buffer tank
Supply air
+
GP52 GT52
CP52
SV53
CP53
GT53 GH53
SV1
CP51
SV2
GT5
Components placed in Combi Cooler
Label Function Delivery
CP51 Circulation pump, supply air coil Included, mounted and connected
CP52 Circulation pump, cold water circuit Not included
CP53 Circulation pump, chilled beam water circuit Not included
GH53 Condens indicator Included, lose accessory
GP52 Flow indicator Included, mounted and connected
GT5 Frost sensor Included when delivered with factory mounted control
GT52 Temp sensor, cold water circuit Included, mounted and connected
GT53 Temp sensor, chilled beam water circuit Included, lose accessory
SV1 Heating valve Not included
SV2 Cooling valve Included, mounted and connected
SV53 Chilled beam valve Not included