Aerco Benchmark 2000 User Manual

Benchmark 1500 - 2000 Boilers
CHAPTER 5 – MODE OF OPERATION
OMM-0097_0E AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 67 of 182
GF-142 Ph.: 800-526-0288 10/01/2015
5.3.1 Setting the Setpoint
The setpoint temperature of the unit is adjustable from 40°F to 240°F (4.4°C to 115.6°C). To set
the unit for operation in the CONSTANT SETPOINT mode, the following menu settings must be
made in the Configuration menu:
Table 5-1: Constant Setpoint Mode Settings
Menu Option
Setting
Boiler Mode Constant Setpoint
Internal Setpt Select desired setpoint using ▲ and ▼ arrow keys
(40°F to 240°F,
4.4°C to 115.6°C)
Refer to section 3.3 for detailed instructions on changing menu options.
5.4 REMOTE SETPOINT MODES
The unit’s setpoint can be remotely controlled by an Energy Management System (EMS) or
Building Automation System (BAS). The Remote Setpoint can be driven by a current or voltage
signal within the following ranges:
• 4-20 mA/1-5 VDC
• 0-20 mA/0-5 VDC
The factory default setting for the REMOTE SETPOINT mode is 4 - 20 mA/1 - 5 VDC. With this
setting, a 4 to 20 mA/1 to 5 VDC signal, sent by an EMS or BAS, is used to change the unit's
setpoint. The 4 mA/1V signal is equal to a 40°F (4.4°C) setpoint while a 20 mA /5V signal is
equal to a 240°F (115.6°C) setpoint. When a 0 to 20 mA/0 to 5 VDC signal is used, 0 mA is
equal to a 40°F (4.4°C) setpoint.
In addition to the current and voltage signals described above, the REMOTE SETPOINT mode
can also driven by a RS-485 Modbus Network signal from an EMS or BAS.
The REMOTE SETPOINT modes of operation can be used to drive single as well as multiple
units.
NOTE
If a voltage, rather than current signal is used to control the
remote setpoint, a DIP switch adjustment must be made on the
PMC Board located in the Control Panel Assembly. Contact your
local AERCO representative for details.
In order to enable the REMOTE SETPOINT mode, the following menu setting must be made in
the Configuration menu:
Table 5-2: Remote Setpoint Mode Settings
Menu Option Setting
Boiler Mode Remote Setpoint
Remote Signal 4-20mA/1-5V, 0-20mA/0-5V, or Network
Refer to section 3.3 for detailed instructions on changing menu options.

Aerco Benchmark 2000 Specifications

General

Brand	Aerco
Model	Benchmark 2000
Category	Boiler
Language	English