1101A PESM Programmable Energy Saver Module
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Model 1101A Programmable Energy Saver Module (PESM)
Home Automation, Inc. 5725 Powell Street, Suite A New Orleans, LA 70123 Phone 504-736-9810 Fax 504-736-9890
DESCRIPTION
The Model 1101A Programmable Energy Saver Module (PESM) is a temperature sensor and control relay in a small enclosure that
mounts near a central heating, ventilation, and air conditioning (HVAC) system thermostat. The PESM allows the automation system
to read the temperature of the area that the HVAC system controls. The relay in the PESM is used to break the 24V RED wire
between the thermostat and the HVAC system. When the automation system is in setback mode and the actual temperature is between
the LOW and HI setpoints, the relay energizes to break the 24V red wire; hence, the HVAC system will no longer operate.
In heating season, when the actual temperature falls below the LOW setpoint, the automation system turns the relay in the PESM off,
thus restoring power to the thermostat, allowing the thermostat to heat as it normally would under the control of the thermostat. The
PESM will cycle the thermostat on and off to maintain the LOW setpoint.
In cooling season, when the actual temperature rises above the HI setpoint, the automation system turns the relay in the PESM off and
the thermostat will cool as it normally would under the control of the thermostat. The PESM will cycle the thermostat on and off to
maintain the HI setpoint.
The Red LED on the PESM will illuminate when the PESM is overriding the thermostat. The Red LED will be off when the
thermostat is working normally.
The PESM doubles as a freeze sensor, which can cause the controller to dial out in the event of a freeze condition or furnace failure.
If the PESM is disconnected from the automation system, the relay will not energize and the HVAC system will operate normally,
under the control of the thermostat.
INSTALLATION
1. Each PESM requires one security zone input and one output. The PESM zone inputs corresponds to controller outputs. When
configured as a PESM Zone Type (Type 80), the zone and unit is used as a pair to read temperature and control the setback
temperature of the house.
2. Run a 4-conductor wire from the controller to each PESM. Connect as shown in FIGURE 1.
3. The PESM should be mounted on an interior wall, preferably close to the HVAC thermostat, using the supplied wall anchors and
screws. Orient the PESM as shown in FIGURE 1 for the optimal temperature reading.
4. Run a 2-conductor wire from the PESM to the thermostat. Connect the PESM between the RED wire going to the thermostat and
the RED terminal on the thermostat.
5. Program the zone type for each PESM as a Type 80, Energy Saver. It may also be programmed as a Temperature (Type 82), or
Temperature Alarm (Type 83) for special applications.
SPECIFICATIONS
Dimensions: 2.75W x 2.75H x 1D
Temperature Range: 0o F - 120o F
Current Consumption: 14mA maximum
REFER TO CONTROLLER'S INSTALLATION MANUAL FOR COMPLETE INSTALLATION INSTRUCTIONS
Page 2
HEAT /AIR
SYSTEM
BLACK
RED
YELLOW
GREEN
PROGRAMMABLE ENERGY
SAVER MODULE
RED LED
ON - ENERGY SAVER IS
OVERRIDING THERMOSTAT
OFF - THERMOSTAT IS
WORKING NORMALLY
EXISTING
LOW VOLTAGE
THERMOSTAT
RED
BLACK
GREEN
YELLOW
AUX 12VGROUND ZONE OUTPUT
HAI CONTROLLER
FIGURE 1 – PESM CONNECTIONS
