Honeywell T498B user manual

Summary of the content on the page No. 1

T498A,B
Electric Heat Thermostats
PRODUCT DATA
FEATURES
• CSA Performance Certifled at 16A.
• CSA Certified, Underwriters Laboratories Inc. Listed
up to 5 kW at 277 Vac.
• Long life, industrial-grade Micro Switch™ mechanism.
• Rugged, engineering plastic mounting base with
captive mounting screws.
• Replaces any standard wall-mounted electric heat
thermostat.
• Classic beige styling.
• Range: 40°F to 80°F (5°C to 25°C).
• Locking cover and range stops are optional.
• Energy efficient and economi

Summary of the content on the page No. 2

T498A,B ELECTRIC HEAT THERMOSTATS CSA Performance Certification: SPECIFICATIONS 16A at 208/240 Vac. IMPORTANT Setpoint Adjustment: The Specifications given in this publication do not Control knob on face of thermostat. include normal manufacturing tolerances. Therefore, this unit may not exactly match the listed Sensing Element: specifications. Also, this product is tested and Flat bimetallic blade. calibrated under closely controlled conditions, and some minor differences in performance can be

Summary of the content on the page No. 3

0 8 0 7 0 OFF T498A,B ELECTRIC HEAT THERMOSTATS 1-1/4
Leave the cover on the thermostat while making (33) connections. 1-1/32  Push the leadwires into the outlet box and insert the (26) thermostat into the box for mounting by pushing against 5/8 (16) the cover.  Remove the thermostat cover by grasping the top and bottom edges and pulling outward.  Turn the dial so that the setpoint indicator is at the 3-9/32 12 o’clock position. This will prevent accidental damage (83) to the dial stop duri

Summary of the content on the page No. 4

0 8 0 7 0 OFF °F 50 60 70 80 90 6 T498A,B ELECTRIC HEAT THERMOSTATS L2 2 T498B 1 6 3 L1 L2 L1 (HOT) RED WIRE 5 T1 T2 4 ELECTRIC HEATER 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 USE SPECIAL SERVICE CO/ALR SOLDERLESS CONNECTORS WHEN CONNECTING ALUMINUM CONDUCTORS OR A FIRE HAZARD MAY RESULT. 3 BREAKS AND REMAKES BELOW -31°F(-35°C); NORMALLY THERMALLY ACTIVATED. BREAKS ON A TEMPERATURE RISE; MAKES ON A TEMPERATURE FALL. 4 USE A SEPARATE LIMIT CO

Summary of the content on the page No. 5

0 8 0 7 0 OFF °F 50 60 70 80 90 6 T498A,B ELECTRIC HEAT THERMOSTATS CALIBRATION The T498 Thermostats are calibrated at the factory using precise instruments under closely controlled conditions. Recalibration should not be necessary. Allow the thermostat to operate for several hours before checking calibration. Temperature deviations of 2°F (1°C) are normal. If the thermostat is mounted in a suitable location and still appears out of calibration, check calibration using the procedures tha

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T498A,B ELECTRIC HEAT THERMOSTATS 95C-10686—3 6

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T498A,B ELECTRIC HEAT THERMOSTATS 7 95C-10686—3

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T498A,B ELECTRIC HEAT THERMOSTATS Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, Minnesota 55422 Scarborough, Ontario M1V 4Z9 95C-10686—3 C.H. Rev. 4-96 95C-10686—3 www.honeywell.com/yourhome 8