Ranco ETC Installation Instructions Manual

RAN C 0
HC TWO ~
PRODUCT DESC
TheRa
i
of elee em~~bUJe
provide on/off control for
ing, air conditioning and
equipped with a liquid
provides a constant readout of the sensed tem-
perature, and a touch keypad that allows
to easily and accurately select the set point tem-
perature, differential and heating/cooling mode of
the operation. Models
on either line voltage
(120/208/240 VAC) or
compressor control, two
~--ventilation control, automatic changeover,
space and return air temperature
/
I with alarm
• Wide setpoint temperature
differential adjustment (1°F to
• Simple keypad programming
differential and coolinglheating
• Two individually programmable stages for
and/or cooling.
• LCD readout of sensor
relay status and onboard
• Remote temperature sensing
• Two SPOT output relays.
• User-selectable Fahrenheit/Celsius
• Lockout switch to prevent
personnel.
• Choice of line voltage and
• Optional 0 to 10 volt
temperature indication.
Input Voltage
Temperature Range
Differential Range
Switch Action
Sensor
INS TAL
COOircas,
e
refrigeration. The ETC is
crystal display (LCD) that
the user
are available that operate
I
I
stage heating,
condenser fan cycling,
control, water cooled condensers
funtion.
FEATURES
range (-30°F to 220°F) and
30°F).
of setpoint temperature,
modes.
heating
temperature, control settings,
diagnostics.
up to 400 feet.
scales.
tampering by unauthorized
low voltage models available.
analog output available for remote
120 or 208/240 VAC (24 VAC optional),
-30°F to 220°F
1°F to 30°F
SPOT
Thermistor, 1.94 in. long x 0.25 in.
8 ft. cable
120/208/240 VAC : 100 milliamps
24 VAC: 2-6 VAC
~. ,'¢'.!"~~~,:.:.
.:r·
T'"I ~0
L' N
~:
\.
CTR HI( T
NO Contact
Code Number
ETC-211000-000
ETC-211100-000
ETC-212000-000
ETC·2121 00-000
Liquid Crystal Display (LCD)
The LCD display provides a
and indicates if either
annunciator is constantly illuminated during
energized. Likewise,
during operation,
in conjunction
temperatures, differentials and
Control Setup
The temperature
open (NO) contacts of the
be controlled and the
heating.
50/60 Hz
• When the cooling
The relay will de-energize as the temperature falls to the
• When the heating mode is
The relay will de-energize as the temperature rises to the
diameter with
The ETC two stage control can be set up for two stages of
of cooling or one stage cooling plus one stage heating. Refer to Figures
and 3 for a visual representations of different
INS T
Rue
Full-load amps 9.8 A
Locked rotor amps 58.8A
Resistive amps
9.8A
Horsepower
1/2 hp
.8A
5.8 A
1/4 hp
-20°F to 140°F (-29OC to 60OC)
-40°F to 176°F (-40OC to 80OC)
o
to 95%, RH,
!mpEldance 1 K
EMA 1. Plastic
UL ·sted. File
CSA Certified, File
Input
Voltage
120/240
120/240
24
24
OPERATION
constant readout of
of the two output relays is
operation,
when the S2 annunciator is constantly illuminated
the Stage 2 relay is energized.
with the keypad to allow the user to adjust the setpoint
heating/cooling modes for each
setpoint refers to the temperature at which the normally
output relay will open.
operating modes required
mode is chosen, the differential is above the
chosen, the differential is below the
control
T ION S
NTROl
4.9A
29.4 A
4.9A
1/2 hp
2.9 A
17.4 A
2.9A
1/4 hp
Non-condensing
E94419, Guide XAPX
LR68340, Class 4813 02
0-10 V
No. of
Stages Output
No
2
2 Yes
2 No
2 Yes
the sensor temperature
energized. When the S1
the Stage 1 relay is
The display is also used
stage.
Determine the loads to
for each stage, cooling or
setpoint.
setpoint.
setpoint.
setpoint.
heating, two stages
1, 2
setups.