Honeywell 42011076-003 manual Basic Operation of the System, Installer Mode, Automatic Operation

3) Basic Operation of the System

3.1 Automatic Operation

The receiver box receives the heat demand (0- 100%) signal from the room thermostat. The room thermostat will display the symbol on the LCD display whenever more heat is required. Depending on the demand the receiver box will switch the heating device on to match the current requirements of the system.

The green LED indicates the status of the relay output:

•Green LED on = relay on

•Green LED off = relay off

HC60NG Receiver Box

Push button and relay status LED’s

3.2 Temporary Manual Override

Pressing the receiver box button will override the current relay position. As soon as the next signal is received from the room thermostat the receiver box will return back to automatic operation as the automatic control has higher priority than manual operation.

3.3 Communications Loss

If the RF communication is lost for a period of 1 hour the red LED will illuminate to indicate that no RF messages have been received during the last hour.

The receiver box will also enter the failsafe mode as selected in Installer Mode (see section 4.2 HC60 Receiver Box Fail-Safe Mode Setup). To allow manual control of the receiver box output manual override is available in fail-safe mode. When RF communication is restored the receiver box will automatically return to normal operation.

You can now use the USER GUIDE supplied with the room thermostat to demonstrate how it works to the home owner.

4) Installer Mode

Installer Mode is used to alter the system settings for specific applications, to use the special features of the room thermostat in a different way or to alter the factory preset parameters. Parameters are divided into two groups:

-Category 1 parameters – Room Thermostat Setup

-Category 2 parameters – System Setup.

These are all listed in section 4.5 Installer Parameters Table.

 CM900 Wireless - Programmable Room Thermostat