Honeywell T4398A Скачать руководство пользователя страница 7 | Manualshive

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Honeywell T4398A Скачать руководство пользователя страница 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.

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Содержание T4398A

Страница 1: ...lement provides high temperature sensitivity with minimum droop Canadian Standards Association CSA Performance Certified up to 20A CSA Certified UL Listed up to 5 kW at 277 Vac Long life industrial grade Micro Switch mechanism Rugged engineered plastic mounting base with captive mounting screw Color coded flyleads compatible with aluminum wire for quick installation Replaces any standard wall moun...

Страница 2: ...nd thermal non adjust able Switch Type Enclosed industrial grade Micro Switch snap switch T4398A Single line break single pole single throw T4398B Double pole single throw with double line break double pole single throw in Off position Wiring Connections Six inch 150 mm stranded copper leadwires suitable for con necting to aluminum wiring if approved special service CO ALR connectors are used Elec...

Страница 3: ...n old line voltage thermostat Carefully remove the old thermostat to avoid damaging the wiring insulation Check the old insulation for cracks chips or fraying and apply approved electrical tape where necessary to ensure adequate insulation NOTE Make line voltage wiring connections directly to the leadwires installed on the thermostat using wire con nectors approved for the number and size of condu...

Страница 4: ...R A FIRE HAZARD MAY RESULT BREAKS AT POSITIVE OFF AND REMAKES UNDER 31 F 35 C NORMALLY THERMALLY ACTIVATED BREAKS ON TEMPERATURE RISE MAKES ON TEMPERATURE FALL USE A SEPARATE LIMIT CONTROL IN THE HEATING APPLIANCE BREAKS AT POSITIVE OFF ONLY NOT THERMALLY ACTIVATED DO NOT CONNECT GROUNDED CONDUCTOR NEUTRAL ON 120 OR 227V CIRCUITS INSULATE AND TAPE OR CUT OFF RED WIRES IF UNUSED 1 2 3 4 5 6 5 L2 T2...

Страница 5: ...r is affected by barometric pressure and altitude Deviations up to 1 F 1 2 C are within normal operation The control point drops 2 F every 1000 ft 1 C 300m above sea level See Fig 5 and 6 Fig 5 T4398 altitude correction in ft Fig 6 T4398 altitude correction in m To calibrate see Fig 7 1 Remove cover and place it in a location that allows it to sense the room temperature NOTE Allow several minutes ...

Страница 6: ...lock cover drive Allen screw into thermostat base until screw body clears cover Fig 8 Installing locking cover To install the range stops select models Fig 9 1 Set thermostat to desired setpoint and remove the cover 2 Install plastic dowels supplied into minimum and or maximum range stop holes on the back of the cover 3 Reinstall the cover and check range stop operation Fig 9 Installing range stop...

Страница 7: ... 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 ...

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