HAI Model 1101A — Programmable Energy Saver Module (PESM) Specifications

Specification and installation sheet for the HAI Model 1101A Programmable Energy Saver Module (PESM) — a temperature sensor and control relay for HVAC energy setback automation.

Description

The Model 1101A PESM is a temperature sensor and control relay in a small enclosure that mounts near a central HVAC system's thermostat. It allows the automation system to read the temperature of the area the HVAC system controls. The PESM's relay breaks 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, stopping the HVAC system from operating.

• Heating season: when the actual temperature falls below the LOW setpoint, the automation system turns the PESM relay off, restoring thermostat control and heating normally. The PESM cycles the thermostat on/off to maintain the LOW setpoint.
• Cooling season: when the actual temperature rises above the HI setpoint, the automation system turns the relay off and the thermostat cools normally. The PESM cycles the thermostat on/off to maintain the HI setpoint.

The Red LED on the PESM illuminates when it is overriding the thermostat, and is off when the thermostat is working normally. The PESM also doubles as a freeze sensor, which can trigger the controller to dial out in the event of a freeze condition or furnace failure. If disconnected from the automation system, the relay does not energize and the HVAC system operates normally under thermostat control.

Installation

1. Each PESM requires one security zone input and one output. The PESM zone input corresponds to a controller output. When configured as a PESM Zone Type (Type 80), the zone and unit are used as a pair to read temperature and control the house's setback temperature.
2. Run a 4-conductor wire from the controller to each PESM (connect per the wiring diagram: GROUND, AUX 12V, ZONE, OUTPUT to GREEN/YELLOW/RED/BLACK on the PESM).
3. Mount the PESM on an interior wall, preferably close to the HVAC thermostat, using the supplied wall anchors and screws, oriented for 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 Type 80 (Energy Saver). It may also be programmed as Temperature (Type 82) or Temperature Alarm (Type 83) for special applications.

Note: Refer to the controller's installation manual for complete installation instructions.

Specifications

Contact

Home Automation, Inc. — 5725 Powell Street, Suite A, New Orleans, LA 70123. Phone 504-736-9810, Fax 504-736-9890.