AERCO SWDW68 U-Tube Double-Wall Heaters w/ECS - Manual (Page 9)

HE-
111 − GENERAL INFORMATION
Rev B Mar 2013 1-3
DHW
DUAL OUTLET
TEMP. SENSOR
OVER-TEMPERATURE
SOLENOID VALVE
CONTROL BOX
ASSEMBLY
CONSTANT RATE
RECIRCULATION
PUMP FEED-FORWARD
MIXTURE TEMP.
SENSOR
CXT-E CONTROL
VALVE ACTUATOR
CONTROL
VALVE
Figure 1-3. Electronic Control System Components
1.4 OPTIONS AND ACCESSORIES
1.4.1 MODBUS Communication Option
The ECS can be ordered with the MODBUS Communication Option to enable the ECS to be externally
controlled by an Energy Management System, Building Automation System or computer (supplied by
others).
1.4.2 Accessories
Accessories available for the DW-series steam-to-water heat exchangers equipped with the CXT-E
Electronic Control Valve are listed in
Table 1. Required accessories may be supplied separately by AERCO if they are not factory-installed on
the heater.
The accessories required will depend on the specific application. Detailed installation instructions,
including typical installation drawings are provided in Chapter 2 Installation. Please ensure that ALL
mandatory items are available for installation.
If any of these items have been furnished by AERCO, the necessary drawings and/or instructions are
included with the shipment.