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BEFORE INSTALLATION
Refer to job drawings for specific installation information and
mounting location. Main and compensation sensors (when
used) must be 500-ohm Balco sensors (L7022, L7025,
L7033, T7506 or T7001).
This controller is surface mounted through the two holes in
the back of the case.
Observe ambient temperature (30 to 140F) (0 to 60C) and
relative humidity (5 to 95%) limitations.
No special tools are required to install this controller.
CAUTION:
This controller requires a 11 to 12V dc power supply
for proper operation. The power may be supplied by
an R7503 Modutrol* Motor Converter, R7504 Two-
Position Converter, RP7505 Pneumatic Transducer,
Electronic Modutrol Motors M734K or M745J, any
other device designed for use with this Temperature
Controller, or a separate dc power supply. This
controller outputs 4 to 7 Vdc across the proportional
band setting. It is designed to work with motors and
actuators that expect a 4 to 7 Vdc input signal.
MOUNTING
This controller can be surface mounted in any convenient
location such as on duct walls, end compartments of unit
ventilators, etc.
Copyright © 1995 Honeywell Inc. • All Rights Reserved
R7500C Wide Range Proportional
RC186
Temperature Controller
They are fastened to the mounting surface through the two
diagonally opposed mounting holes in the back of the case.
See Fig. 1.
For access to the mounting holes, remove the cover from the
case by loosening the cover mounting screw.
The mounting holes are now visible through the circuit board
notches in the upper right and lower left-hand corners.
Determine placement of the mounting holes in the surface
and scribe the mounting hole locations. Drill pilot holes and
fasten with No. 10 screws.
Fig. 1. Approximate Installation Dimensions in
inches (Millimeters).
INSTALLATION INSTRUCTIONS
95-7205
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Summary of Contents for Honeywell R7500C
- Page 1 MOUNTING Fig. 1. Approximate Installation Dimensions in This controller can be surface mounted in any convenient inches (Millimeters). location such as on duct walls, end compartments of unit ventilators, etc. 95-7205 Copyright © 1995 Honeywell Inc. • All Rights Reserved...
- Page 2 COMPENSATION IS NOT USED. C7828 BOTH ORANGE WIRES ARE ELECTRICALY IDENTICAL. C7829 Fig. 2. Typical Hookup Diagram of R7500C Model with Integral Setpoint Adjustment. Fig. 3. Typical Hookup Diagram of R7500C with Remote Temperature Selector. NOTE: When the compensation sensor is not used, substitute a 500-ohm resistor and set the compensation ratio at the maximum setting (20).
- Page 3 (i.e., valve, damper) from one extreme position to the other (full on to full off). The controller has the highest gain with the lowest PB setting. Fig. 5. View of R7500C with Cover Removed Showing Adjustment Locations. 95-7205...
- Page 4 R7500C WIDE RANGE PROPORTIONAL TEMPERATURE CONTROLLER CHECKOUT AND TESTING COMPENSATION RATIO ADJUSTMENT Compensation ratio is the number of degrees temperature CHECKOUT change required at the compensation sensor to change the primary sensor control point one degree F. The only checkout ordinarily required is to slowly rotate the...
- Page 5 R7500C WIDE RANGE PROPORTIONAL TEMPERATURE CONTROLLER NOTE: 1. To ensure correct voltage readings in the following tests, a 500-ohm resistor should be substituted for the compensation sensor (if its temperature is not near 75F [24C]) and “comp. ratio” should be set at 20.
- Page 6 Home and Building Control Home and Building Control Helping You Control Your World Honeywell Inc. Honeywell Limited-Honeywell Limitée Honeywell Plaza 740 Ellesmere Road P.O. Box 524 Scarborough, Ontario QUALITY IS KEY Minneapolis, MN 55408-0524 M1P 2V9 95-7205 Rev. 10-95 Printed in U.S.A.