3
INSTALLATION INSTRUCTIONS
WARNING
Electrical Shock Hazard - Turn off power at the main
power source before installing the ETC control.
DO NOT restore electrical power to the unit until the
ETC control is properly installed and cover assembled.
Fire Hazard - DO NOT locate the ETC control in an
explosive atmosphere as a fire could result due to
possible spark generation in the control.
All ETC Controls are designed as temperature controls
and are not used as temperature limit controls.
Where failure or malfunction of the ETC control could
cause personal injury or property damage, other
devices (limit or safety controls) or systems (alarm
or supervisory) intended to warn or protect against
failure or malfunction of the ETC control must
be installed.
LOCKOUT : LOCK UNLOCK
USE COPPER CONDUCTORS ONLY
DISPLAY CODES
F FAHRENHEIT
C CELSIUS
H1 HEAT STAGE 1
C1 COOL STAGE 1
EP PROBE FAILURE/
OUT OF RANGE
EE EEPROM FAILURE
E1 IMPROPER KEY
E2 MEMORY ERROR
RELAY RATINGS N.O /N.C.
VAC
120 208/240
LRA 96/34.8 48/17.4
FLA 16/5.8 8/2.9
15/5.8 8/2.9
RES A
PILOT DUTY 125VA
1
THERMOSTATS
52N8
Step
Annunciator
Description
Display
1
F
or
C
Fahrenheit or Celsius
Scale
2
S1
(blinking)
Stage 1 Setpoint
Temperature
3
DIF 1
(blinking)
Stage 1 Differential
Temperature
4
C1/H1
Stage 1 Cooling or
Heating Mode
5
D1
Cooling Delay
Set to 1-20 Minutes
6
S2 (blinking)
Stage 2 Setpoint
Temperature
7
DIF 2 (blinking)
Stage 2 Differential
Temperature
8
C2/H2
Stage 2 Cooling or
Heating Mode
9
D2
Cooling Delay
Set to 1-20 Minutes
Figure 4: Lockout Switch
INSTRUCTIONS CONCERNANT L’INSTALLATION
AVERTISSEMENT
Risque de choc électrique - Couper le courant à la
source d’alimentation principale avant d’installer le
contrôleur ETC. NE PAS rétablir l’alimentation élec-
trique de l’appareil avant que le contrôleur ETC ne
soit correctement installé et que le couvercle ne soit
assemblé.
Risque d’incendie - Ne pas placer le contrôleur ETC
dans une atmosphère explosive car un incendie
pourrait être déclenché par d’éventuelles étincelles
survenant dans le contrôleur.
Toutes les commandes de l’ETC sont conçues pour
contrôler la température et ne sont pas utilisées com-
me témoins des limites de température.
Si une défaillance du contrôleur ETC peut causer
des blessures ou des dommages matériels, d’autres
dispositifs (contrôles des limites ou de la sécurité) ou
des systèmes (d’alarme ou de surveillance) destinés
à prévenir ou à protéger contre une défaillance ou un
dysfonctionnement du contrôleur ETC, doivent être
installés.
TROUBLESHOOTING ERROR MESSAGES
Display Messages
E1
Appears when either the up
Ç
or down
È
key is pressed when not
in the programming mode.
To correct: If the
E1
message appears even when no keys are being
pressed, replace the control.
E2 Appears if the control settings are not properly stored in memory.
To correct
: Check all settings and correct if necessary.
EP
Appears when the probe is open, shorted or sensing a temperature
that is out of range.
To correct: Check to see if the sensed temperature is out of range.
If not, check for probe damage by comparing it to a known
ambient temperature between -30°F and 220°F. Replace the
probe if necessary.
EE
Appears if the EEPROM data has been corrupted.
To correct: This condition cannot be field repaired.
Replace the control.
CL
Appears if calibration mode has been entered.
To correct: Remove power to the control for at least five seconds.
Reapply power. If the
CL
message still appears, replace the control.
Normal Operating Mode
Probe Temperature
°F
Relay 1 ON
S1
Relay 2 ON
S2
*Note Cd alternates with temperature and relay
Program Mode Displays
