Performance

Fixed switch differential

On controls and recycling limits a fixed differential of: 4 ± 1.5°C, 8 ± 3°C or

12 ± 3°C is supllied as a standard.

Optional are:

7 ± 2.7°F,

14 ± 5.4°F

15 ± 5.4°F

Adjustable switch differential

On controllers and recycling limiters an adjustable differential of:

4 ± 1.5°C ... 10 ± 3°C or

7 ± 2.7°F ... 18 ± 5.4°F can be supllied.

Manual or tool reset switch differential

On the thermal cut-out versions (manual or tool reset) of the panel mounted, the single direct mounted and the dual direct mounted Aquastats the maximum reset differential might be 30°C

NOTE: The differential (thermal) is dependant on the rate of change of the temperature in the heating system. The given differential datas are valid for a rate of 1°C per minute.

Ambient temperature error

Ratio of ambient error	Max. setting		Min. setting
With capilliary lenth of 1000 mm	1	: 5.5	1	: 8.5

With capilliary lenth of 50 mm	1	: 12	1	: 25

Example:

An ambient error ratio of 1 : 6 means that an ambient change of 6°C will cause a setpoint shift of the Aquastat of 1°C.

Time constant

•With well

τ≤ 30 s for panel mounted, single direct mounted, dual direct mounted and triple direct mounted Aquastats.

•Without well

τ≤ 4 s

•With sensor assy (Surface mounted Aquastat)

τ± 50 s

Setpoint accuracy

+0/-8°C for thermal cut-outs

EN2R-9005 0406R3-NE

1EN2R-9005 0406R3-NE specifications

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