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The performance specifications are nominal and conform to acceptable industry standards. For applications at conditions beyond these specifications, consult the local Johnson Controls office.
Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc. www.johnsoncontrols.com
R-65
A36 Series Four-Stage Remote Bulb Thermostats
Description
The A36 series are four-stage thermostats
with open construction for use in panel
mounting.
Refer to the Type A36AHA 4-Stage Computer
Environmental Temperature Control Product
Bulletin (LIT-125145) for important product
application information.
a36 IN.eps
A36 Series Action Diagram
Features
Screwdriver slot adjustment with calibrated
dial enables movement of entire staging band
within the range.
Applications
Use for cycling control for multiple
refrigeration compressors or unloading type
compressors.
Accessories
Order Enclosure CSE57A-600 separately, if
required.
Switch
Differential
Switch
Differential
Switch
Differential
Interstage
Differential
a36diff.eps
A36 Series Differential Diagram
Selection Chart
Specifications
Maximum bulb temperature is 120°F (49°C) in operation and 140°F (60°C) when shipping.
Product Code
Number
Switch
Action
Range °F (°C) Differential F° (C°)
Fixed
Bulb and
Capillary
Bulb Well No.
(Order Separately)
Range
Adjuster
A36AHA-50C
1
1. Calibrated at mid-switching point; computer room or comfort control.
Four Single-Pole,
Double-Throw
(SPDT)
switches
55 to 95
(13 to 35)
Two each stage
1 1/2 (0.8) between stages
3/8 in. x 5-1/4 in.
18 in. capillary
w ith 12 in. nylon armor
WEL14A-603R Screwdriver slot with
calibrated dial
A36AHA-52C
1
A36AHA-58C
2
2. Calibrated at low-switching point; special close control chiller applications.
0 to 70
(-18 to 21)
Three each stage
2-1/2 (1.4) between stages
3/8 in. x 4-3/4 in.
15 ft braid armor
capillary
WEL14A-602R
A36AHB-33C
1
Two each stage
2-1/2 (1.4) between stages
Electrical Ratings (Per Switch)
Motor Ratings VAC 120 208 240 277
A36AHA
AC Full Load A 10.0 6.9 5.0
AC Locked Rotor A 60.0 41.4 30.0
Non-Inductive A 16.0 9.2 8.0 7.2
Pilot Duty 125 VA, 120 to 227 VAC
A36AHB
AC Full Load A 6.0 3.4 3.0
AC Locked Rotor A 36.0 20.4 18.0
Non-Inductive A 10.0 5.7 5.0 4.3
Pilot Duty 125 VA, 120 to 227 VAC
A36AHA-52 Remote
Bulb Thermostat
Multi-Stage Electromechanical Temperature Controls
Code No. LIT-1927135
Repair Information
If the A36 Series Four-Stage Remote Bulb
Thermostat fails to operate within its
specifications, replace the unit. For a
replacement thermostat, contact the nearest
Johnson
Controls®
representative.