Siemens QAF81 Manual

Siemens Termostat QAF81

Læs gratis den danske manual til Siemens QAF81 (4 sider) i kategorien Termostat. Denne vejledning er vurderet som hjælpsom af 21 personer og har en gennemsnitlig bedømmelse på 3.7 stjerner ud af 11 anmeldelser. Har du et spørgsmål om Siemens QAF81, eller vil du spørge andre brugere om produktet?

Side 1/4

Siemens Building Technologies CA1N1284E / 11.1998

Landis & Staefa Division 1/4

1

284

Frost thermostat QAF81...

for air temperature monitoring

Frost protection thermostat to prevent frost damage in air conditioning systems

•

Robust aluminium die-cast housing

•

Responds to temperature change sensed over any 30 cm length of capillary

•

Small switching differential

•

Good repeatability

•

Setpoint adjustment – 5 ...15 °C

•

Protection standard IP65

The frost protection thermostat QAF81... for air-side monitoring of the temperature of

LTHW heating coils in ventilation and air conditioning systems is used to prevent frost

damage. It has a small switching differential and good repeatability. The reset occurs

automatically (manual reset required with QAF81.6M).

The frost thermostat can be used to initiate the following frost protection functions:

– Stop fan

– Close outside air dampers

– Open heating coil valve 100 %

– Start heating coil pump

– Switch off chiller (condenser) and humidifier

– Trip visual and/or audible frost alarm

The frost thermostat QAF81... trips when the temperature drops below the selected

setpoint over a capillary length of 30 cm.

An automatic reset occurs when the temperature rises above the setpoint again (manual

reset required with QAF81.6M).

3 types of frost monitor are available. They differ in the length of the capillary and in the

reset:

Type Reset

Capillary length

QAF81.3

automatic reset 3 m

QAF81.6

automatic reset 6 m

QAF81.6M

with lock-out and manual reset 6 m

Use

Typical applications

Functions

Type summary

Produkt Specifikationer

Mærke:	Siemens
Kategori:	Termostat
Model:	QAF81

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