ECS Upgrade for SW Double Wall Heaters, Kits 27035, 27036, 27037
Technical Instruction Document
TID-0142_0A
12/30/2014
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, New York 10913
•
Phone: 800-526-0288
Page 15 of 24
Table 2-1. Temperature Controller Operating Controls, Indicators & Displays
CONTROL or
INDICATOR
MEANING
FUNCTION
OP1
Output 1 Indicator
OP1 lights when a 4 to 20 mA signal is being supplied
to the ECS Valve Actuator
OP2
Output 2 Indicator
Not used for the ECS application
SP2
Setpoint 2 Indicator
Not used for the ECS application
REM
Remote Setpoint
Indicator
REM lights when the ECS is set up to be controlled by a
Remote (Modbus) signal. REM will also flash when Modbus
communication is active.
Auto/Manual Button
and Indicators
When button is pressed, the Controller is toggled between
the automatic (AUTO) and manual (MAN) modes.
AUTO lights when in the automatic mode.
MAN lights when in the manual mode.
Run/Hold Button and
Indicators
Not used for ECS application
Page Button
Press
Page
button to select a new list of parameters
Scroll Button
Press
Scroll
button to select a new parameter in a list
Down Button
Press to decrease the value shown in the lower display
Up Button
Press to increase the value shown in the lower display
NOTE
:
External power at 120 to 240 VAC, 50/60 Hz is required to operate
the circuitry contained in the ECS Control Box. Power connections
are made internally by routing the power wiring through the cutout
provided on the right side of the Control Box.
2.5.5 Wiring the ECS Control Box for the Circulator and Temperature Control
To wire the Circulation Pump and Thermocouple into the ECS control box, follow these steps:
1. Loosen the captive Phillips head screw on the right front portion of the Control Box (Figure
2- to open the hinged door.
2. Swing open the door and loosen the captive Phillips head screw at the top of the recessed
panel (Figure 2-8). Swing down the panel to access terminal block TB-2 (Figure 2-9).
3. Circulator Electrical connections:
Observe all applicable codes and safety procedures
when connecting to power supply
. The motor is impedance protected, and does not require
overload protection. Either colored wire from the pump’s capacitor box can be attached to
either colored wire from the control box power supply. There is no “hot” or “common” wire
leading from the capacitor box. Typical installation would be to attach the white wire to
the white (common) power supply wire and either the yellow or blue wire to the black (hot)
power supply wire. The pump cannot run backwards.
