Advertisement
Relay 24 VAC, DO2: Signal to reversing valve against cooling agent return (active cold)
Relay 24 VAC, DO3: Signal to coolant cooler circulation pump
Relay 24 VAC, DO4: Signal to reversing valve, surplus heat
Relay 24 VAC, DO5: Signal to cooling circuit circulation pump
Transmitter, cooling tank
⚠
• Connect to T1 and GND
Transmitter, coolant cooler
⚠
• Connect to T2 and GND
Transmitter, cooling tank outlet
⚠
• Connect to T3 and GND
Transmitter, cooling circuit
⚠
• Connect to T4 and GND
Dew point sensor
⚠
• Connect to 24 VAC 2 .1 and 24 VAC 2 .2
⚠
• Connect room temperature sensor to AI1 and GND
⚠
• Connect relative air humidity sensor to AI2 and GND
Pilot valve, cooling circuit
⚠
• Connect AO1 to the signal input of the pilot valve
⚠
• Connect GND to pilot valve GND
⚠
• Connect the pilot valve terminal G to 24 VAC 2.1
⚠
• Connect the pilot valve terminal G0 to 24 VAC 2.2
Cooling fans
⚠
• Connect AO2 to the signal input of the cooling fan
⚠
• Connect GND to the cooling fan GND
Voltage feed to DO output terminals
⚠
• Connect 24 VAC to 24 VAC 2 .1
⚠
• Connect G0 to 24 VAC 2.2
Reversing valve, cooling tank
⚠
• Connect start relay to DO1 and G0
Reversing valve, cooling agent return
⚠
• Connect start relay to DO2 and G0
Circulation pump, coolant cooler
⚠
• Connect start relay to DO3 and G0
Reversing valve, surplus heat
⚠
• Connect start relay to DO4 and G0
Circulation pump, cooling circuit
⚠
• Connect start relay to DO5 and G0
Alternative connection of reversing valves:
When constant voltage feed to a reversal valve's 2-point 24 VAC adjuster is required, establish direct connection to 24 VAC
2.1 and 24 VAC 2.2. A start relay is not necessary when using a 2-point 24 VAC actuator.
Connect the control signal to the corresponding digital output terminal, DO1, DO2 or DO4.
14 – Danfoss
VMILF102
Advertisement
