Thermostats
Capillary and clamp-on thermostats
Frost protection units  QAF64..J

Frost detector, air side, 2-point
• Modulating and 2-position
• Fully active capillary type sensing element
• Indication of frost with red LED
• Test switch for simulation of frost
• Selector for automatic or manual reset function
• Modulating P-controller for startup
• Limit value contact for plant control
In addition to direct mounting, the frost monitor can be fitted to the air duct using the AQM63.0 snap-on
mounting flange (accessory).
Data sheet A6V10432022
Operating voltage AC 24 V
Power consumption 6.6 VA
Min. active length 250 mm
Setpoint setting range 1...10 °C
Measuring range, temperature 0...15 °C
Ambient temperature, operation -15...55 °C
Connection cable 6 (8)-wire
Digital output, switching voltage DC 5 V / AC 5...250 V
Digital output, switching current 6 (4) A
Analog inputs Control input
Analog output, signal DC 0...10 V
Digital outputs Potential-free
Switchover contact
Degree of protection IP42
Dimensions (W x H x D) 96 x 136 x 67 mm

QAF64.2-J Capillary length 2000mm

QAF64.6-J Capillary length 6000mm