Single-Stage Electromechanical Temperature Controls
A19 Flange Mounted Duct Thermostat
Description
The A19 Flange Mounted Duct Thermostat is
a wide-range temperature control with a
special air coil sensing element and an
adjustable mounting flange.
Refer to the A19 Series Hot Water Heating
Controls Well Immersion Product Bulletin
(LIT-125025) for important product application
information.
Features
• single-pole, double-throw (SPDT)
snap-action switch
• unaffected by barometric pressure or
cross-ambient temperatures
• flat flange mounting with the coil element
permits positioning the sensing bulb in the
appropriate portion of the air stream
Selection Charts
A19 Flange Mounted Duct Thermostat
Product Code
Number
A19EAF-1C SPDT 60 to 130 (16 to 54) 2 (1.1) 200 (93)
A19EAF-2C SPDT 30 to 110 (-1 to 43) 2 (1.1) 140 (60)
Replacement Parts
Product Code Number Description
CVR28A-618R Visible scale cover
Switch
Action
Range
°F (°C)
Applications
These duct thermostats are used on rooftop
units, make-up heaters, duct heaters, and air
handling systems of all types.
Technical Specifications
Electrical Ratings
Motor Ratings VAC 120 208 240
AC Full Load A 6.0 3.4 3.0
AC Locked Rotor A 36.0 20.4 18.0
Non-Inductive 10 A, 120 to 277 VAC
Pilot Duty 125 VA, 24 to 277 VAC
Differential
F° (C°)
Maximum Bulb
Temperature °F (°C)
Code No. LIT-1927070
The performance specifications are nomina l and con form to accep table ind ustry stand ards. For applicati ons at con ditions be yond these specification s, consult th
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.
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