Data Sheet for Product

ManualsBrandsSiemens ManualsThermostats (temperature controller with sensor)Frost detectors QAF64..-J

4 / 10

Siemens Frost detector A6V10432022_en--_e

Smart Infrastructure 2021-04-20

Type summary

When ordering, please give product number, stock number and description.

The mounting accessories not included in the scope of delivery must be ordered as

separate items.

1 x M16 cable gland for cable entry

2 x screw to DIN 7981-St 4.2 x 22 for direct mounting

1 x rubber grommet for capillary entries into air ducts

1) QAF64.6-J requires 2 AQM63.2

Notes

The frost detector operates on AC 24 V. The transformer used must be suited for

safety extra low voltage (SELV), 100% duty, and must have separate windings.

Fuses, switches, wiring and earthing must be in compliance with local safety regu-

lations. The permissible cable lengths must be observed.

If the capillary tube is mechanically damaged or if there is a leak in the diaphragm

system, the frost detector signals a low temperature and assumes the "Frost" posi-

tion. That is the case also if there is a power failure or if one of the major electronic

components fails.

In the case of large cross-sectional areas of the air duct, an air heating coil can be

monitored by several QAF64..:

 QAF64.. valve control signal outputs/inputs in series, and

 QAF64.. relay contacts in series

If the relay contacts Q11/Q12/Q14 do not operate on safety extra-low voltage

(SELV), the following applies:

 Only authorized personnel may open the frost detector to make settings or the

relay circuit must be de-energized

 For manual operation, an external button must be installed for the reset function

(see "Connection diagram")

Product number Stock number Description

QAF64.2-J S55700-P155 Frost detector with 2-m capillary

QAF64.6-J S55700-P156 Frost detector with 6-m capillary

Ordering

Accessories

Included in the scope

of delivery

Not included in the

scope of delivery

Product

number

Stock

number

Designation Parts

AQM63.0 BPZ:AQM63.0 Mounting flange 1 x depth-adjustable mounting

flange for the housing

AQM63.2

BPZ:AQM63.2 Capillary

supports

3 x capillary tube clamp

3 x spacer

Engineering

CAUTION