Honeywell T4398B Bedienungsanleitung PDF herunterladen (Seite 7)

T4398A,B PRECISION ELECTRIC HEATING THERMOSTAT

7 69-1604

Frost Protection (T4398A)

When the ambient temperature falls to 40°F (4°C), the vapor

in the diaphragm changes into liquid. The diaphragm collapse

to a fraction its original thickness, turning on the heat,

regardless of setpoint. This feature guarantees minimum, yet

reliable, operation of heaters in spaces near freezing.

NOTE: To prevent heat from turning on below 40°F (4°C),

turn off the circuit at the breaker panel, or install a

T4398B.

1 2 3 4 5 6 7 8

Keine Kommentare

Honeywell T4398B Bedienungsanleitung Seite 7