ATC HeatStat HS500 - User Manual

ATC Electrical & Mechanical,
ATC House, Broomhill Drive, Tallaght, D24 EF99, Ireland
IE: 01 4678301, UK:0203 564 9164, Email sales@atc.ie
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ATC HeatStat Underfloor Heating Thermostat
Installation And Operation Manual
HS500
Power 220-240V AC 50/60Hz
Temperature Range (Display) 0° to 40°
Temperature Range (Adjustment) 5° to 35°
Temperature Display accuracy 0.5°C
Sensor type Internal 10kΩNTC
External 12kΩNTC @25°C
Program type 4 on/off per day (5+2)
Switching capacity (Relay) 16A Resistive. 1A Inductive
Working environment temperature 0° to 90°
Installation type Wall Mounted
Connection Diagram
Specifications:
1. Read all instructions prior to installing this thermostat, failure to follow the instruc-
tions could damage the product or cause a hazardous condition.
2. Check the loading of the product you intend to connect to this thermostat to ensure
that the device is capable of switching the intended load. Do not connect the load if
it is rated higher than 16A.
3. After product installation is complete, follow the instructions given below to ensure
that the thermostat functions correctly.
4. This product must be installed by a qualified electrician.
IMPORTANT SAFETY INSTRUCTIONS
CAUTION
Always disconnect power before installation, Risk of Electric Shock
or Equipment Damage.
CAUTION
Thank you for purchasing the ATC HeatStat wall
mounted heating controller, your thermostat
is equipped with five touch sensitive buttons
across the bottom of the thermostat for easy
control and a large easy to read screen that is
optimised for viewing from above.
The HS500 is designed for both underfloor
heating control with the supplied floor sensor
and normal room control using the built in
highly accurate room sensor.

Summary

ATC HeatStat HS500 Overview and Safety

Product Introduction and Specifications

Details the HS500's features, dual sensor capability, and technical specifications.

Important Safety Instructions

Critical safety warnings and precautions for installation and operation, including electrical hazards.

Thermostat Interface and Basic Operation

Main Screen Layout and Controls

Explains the thermostat's display, icons, and the function of each control button.

Setting the Time and Date

Step-by-step guide for accurately setting the current time and day of the week.

Programming Schedules

Details the factory-set 5+2 programming and how to customize heating periods.

Advanced Features and Modes

Holiday Mode Operation

Instructions for activating and setting a temporary temperature hold for a specified number of days.

Key-Lock Functionality

How to lock or unlock the thermostat controls to prevent accidental changes.

Advanced Functions (A1-A5)

Configuration options for temperature offset, control differences, and key lock settings.

Advanced Settings, Troubleshooting, and Warranty

Advanced Functions (A6-AE)

Covers high limit settings, external sensor limits, programming types, and open window mode.

Sensor Fault Diagnosis

Explains error codes E1/E2 and how to troubleshoot sensor connection or resistance issues.

Installation Method and Warranty

Provides installation steps and details the limited one-year warranty for the thermostat.

ATC HeatStat HS500 Specifications

General

Operating Voltage	230 VAC
Accuracy	±0.5°C
Display	LCD
Battery Backup	No
Temperature Range	5°C to 30°C
Programmable	Yes
Load Current	3A resistive