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Superbus Energy Saver Module
Figure 1 shows the main ESM components and Table 1
describes the main ESM components.
Figure 1. ESM Component Locations
Table 1. ESM Component Descriptions
ESM Component
Function
Backup Freeze Stat
Activates furnace if temperature
drops to 45°F (±6°F).
ESM Software Ver-
sion Label
Identifies the installed software
version.
Unit Number DIP
Switch
Determines the ID number of the
ESM on the bus.
Light-Emitting Diode
(LED)
Flashes constantly to indicate nor-
mal communication to the panel
bus.
Temperature Sensor
Monitors the premises temperature.
Terminal Strip
Used for panel and HVAC thermo-
stat connections.
1
2
3
4
5
6
8557G31A.DS4
BACKUP
FREEZE
STAT
LED
ESM SOFTWARE
VERSION LABEL
TERMINAL STRIP
UNIT NUMBER
DIP SWITCH
TEMPERATURE
SENSOR
Superbus Energy Saver
Module
Document Number: 466-1031 Rev. B
January 1997
Installation
Instructions
Product Summary
The Superbus Energy Saver Module (ESM) provides a
money-saving and convenient way to monitor and
control temperatures. The ESM uses low- and high-
temperature limits to save energy by overriding the
existing HVAC thermostat. When the ESM is on,
temperature limits determine when the heat or air-
conditioning turns on. When the ESM is off, the HVAC
thermostat controls heat and air-conditioning.
For example, if the thermostat is set for 68°F and the
ESM high limit is 80°F, the ESM prevents the air-
conditioner from turning on until the temperature reaches
80°F.
A temperature sensor monitors the temperature and
reports a freeze alarm to the panel if the temperature
drops below the set freeze temperature (default = 42°F).
A backup freeze stat provides additional protection by
activating the furnace if the temperature drops to 45°F
(±6°F).
60-620
8841G01A.DS4
