Specifications
Heat exchanger capacity is defined under following conditions:
Saturated suction temperature (SST) = 6°C, Superheat (SH) = 5K
Subcool condensor (SC) = 3K
Air temperature = 27°CDB/19°CWB
OUTDOOR UNIT
CONTROL BOX EXPANSION VALVE KIT
Control z
Control
x or y
Class 63
Class 80
Class 100
Class 125
Class 140
Class 200
Class 250
EKEQDCB
EKEQFCB
EKEXV63
EKEXV80
EKEXV100
EKEXV125
EKEXV140
EKEXV200
EKEXV250
ERQ
1~
ERQ100AV1 P P P P P P - - -
ERQ125AV1 P P P P P P P - -
ERQ140AV1 P P - P P P P - -
3~
ERQ125AW1 P P P P P P P - -
ERQ200AW1 P P - - P P P P P
ERQ250AW1 P P - - - P P P P
P: Pair, combination depending on AHU coil volume and capacity
Allowed heat exchanger volume (dm
3
)
Allowed heat exchanger capacity in coolong (kW) Allowed heat exchanger capacity in heating (kW)
EKEXV class Minimum Maximum Minimum Standard Maximum Minimum Standard Maximum
63 1.66 2.08 6.3 7.1 7.8 7.1 8.0 8.8
80 2.09 2.64 7.9 9.0 9.9 8.9 10.0 11.1
100 2.65 3.3 10 11.2 12.3 11.2 12.5 13.8
125 3.31 4.12 12.4 14.0 15.4 13.9 16.0 17.3
140 4.13 4.62 15.5 16.0 17.6 17.4 18.0 19.8
200 4.63 6.6 17.7 22.4 24.6 19.9 25.0 27.7
250 6.61 8.25 24.7 28.0 30.8 27.8 31.5 34.7
SELECTION OF AIR HANDLING UNITS
PAIR APPLICATION
Step 1: Select required capacity of AHU
Based on the required capacity of the AHU please select the expansion valve
Step 2: Select outdoor unit
Pair combinations with ERQ outdoor units are possible based on the same principle as standard DX units. The capacity of the
AHU unit is indicated by the capacity of the expansion valve and can be connected as indicated in below table.
Step 3: Control box selection
Please make your selection of the control box based on your requirements. All the different control possibilities are mentioned
on page 34.
More information on the selection is available in the service manual.
Eg: If you need 14kW in cooling, you will require an expansion valve of 125class (EKEXV125).
The heat exchanger capacity has priority over the volume of the heat exchanger and is therefore the determining factor for
the selection of the expansion valve. More information on the volume can be found in the data book and service manual.
Eg: Based on above selected expansion valve, the EKEXV125 has a capacity of class 125. Therefore we can choose to connect
it in pair with all outdoor units indicated in the table above with P.
Step 1
Step 2
36