SI METRIC CONVERSION
The following factors can be used to convert from English to the most common Sl Metric values.
MEASUREMENT
MULTIPLY THIS
BY
TO OBTAIN THIS
ENGLISH
VALUE
METRIC
VALUE
CAPACITY
TONS REFRIGERANT EFFECT (ton)
3.516
KILOWATTS (kW)
POWER
KILOWATTS (kW)
NO CHANGE
KILOWATTS (kW)
HORSEPOWER (hp)
0.7457
KILOWATTS (kW)
FLOW RATE
GALLONS / MINUTE (gpm)
0.0631
LITERS / SECOND (L/s)
LENGTH
FEET (ft)
304.8
MILLIMETERS (mm)
INCHES (in)
25.4
MILLIMETERS (mm)
WEIGHT
POUNDS (lb)
0.4536
KILOGRAMS (kg)
VELOCITY
FEET / SECOND (fps)
0.3048
METERS / SECOND (m/s)
PRESSURE DROP
FEET OF WATER (ft)
2.989
KILOPASCALS (k Pa)
POUNDS / SQ. INCH (psi)
6.895
KILOPASCALS (k Pa)
TEMPERATURE:
To convert degrees Fahrenheit (°F) to degrees Celsius
(°C) subtract 32° and multiply by 5/9 or 0.5556.
To convert a temperature range (i.e., 10°F or 12°F chilled
water range) from Fahrenheit to Celsius, multiply by
5/9 or 0.5556.
MICRO
R
TX1
G
RX1
HYPERTERMINAL
E-LINK
COM 1
RS-232
TX
J2
4
3
5
2
7
8
8
9
RX
DTR
DSR
GTX
GRX
COM 4B
FIGURE 26 –
COMMUNICATIONS BLOCK DIAGRAM
LD14492
P.O. Box 1592, York, Pennsylvania USA 17405-1592
800-861-1001
Subject to change without notice. Printed in USA
Copyright © by Johnson Controls 2015
www.johnsoncontrols.com
ALL RIGHTS RESERVED
Form 155.21-O1 (615)
Issue Date: June 12, 2015
Supersedes: 155.21-O1 (410)