DRAWING DETAILS PART NUMBER ISS ECO AND DATE 42011076-003 R2 0024168 08/06 ARTWORK DESCRIPTION DRAWN MKTING MF CM900 RF INSTALLATION GUIDE (UK - English) BM DATE 08/06 SIZE AND FOLDING A3 A4 A5 A6 A7 OTHER SIZE WHEN PRINTED x booklet SIZE WHEN FOLDED X MATERIAL CARTRIDGE MATT ART x WEIGHT 70g 80g 100g 115g 150g x OTHER PRINTING SINGLE SIDE DOUBLE SIDE ONE COLOUR x TWO COLOUR THREE COLOUR FULL COLOUR X black SEE FOLLOWING PAGES FOR COLOUR
CM900 Wireless Installation Guide CM927 / CM921 Wireless Programmable Room Thermostat & HC60NG Receiver Box Description Table of Contents The Honeywell CM900 Wireless (CM927 or CM921) is a modern wireless programmable room thermostat based on Honeywell’s proven programming philosophy. To further improve the ease of use, this product includes an extra large LCD display with backlighting and LoT Technology to assist customers during daily use.
1) Installation Information As these products communicate using RF technology special care must be taken during installation. The location of the RF components as well as the building structure may influence performance of the RF system. To assure system reliability, please review and apply the information given below. Within a typical residential building the two products should communicate reliably within a 30m range.
2) Installing the CM900 Wireless System Please follow the illustrations and information below in sequence to install the receiver box and room thermostat correctly. For applications other than gas boilers, enabling special features and to see what other system options are available refer to section 4) Installer Mode. 2.1 Installing the Receiver Box 1 2 The receiver box is a RF device. For the best performance install in an open space.
2.2 Installing the Room Thermostat 2.2.1 Power Up 1. Remove the battery cover and insert the batteries supplied with the room thermostat (2 x AA LR6 Alkaline Batteries). 2. On the initial power up the available user interface languages will be displayed (only on certain models). or buttons to cycle through the options until the desired language is displayed. Press the Use the green button to confirm the selection. 3. Set the slider switch to the DATE mode. 4. Use the confirm. 5.
2.2.3 Locating the Room Thermostat While still in the Test Mode, as described in section 2.2.2, the room thermostat should be located taking the following into consideration and reviewing the illustrations below: 1. Find a suitable location where the signal transmission is reliable. Reliable transmission is indicated when the receiver box is flashing the green LED every 6 seconds. NOTE: The receiver box relay will be off. 2.
3) Basic Operation of the System 3.1 Automatic Operation HC60NG Receiver Box The receiver box receives the heat demand (0100%) 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.
4.1 Entering Installer Mode 1 2 DAY COPY DAY OFF CM927 DATE PROG AUTO MAN OFF 1..6 The unit will display the first parameter of installer parameter group category 1 (from Parameter n.1 to n.19) as shown Move the slider switch to the OFF mode. Press and hold the buttons together. 3 button and the two & 4 or to Press the change factory setting. Press the green button to confirm the change. The display will flash indicating that a change has been made. 5 The display will stop flashing.
4.3 Using the Room Thermostat for Specific Applications The CM927/921 RF room thermostat is a versatile controller that can be used to control many different applications. For most typical applications, like wall-hung gas fired combination boiler control or zone valve control, no adjustments from the factory settings are required. For other applications, like controlling an oil burner, the best system performance can be achieved by modifying selected parameters of the room thermostat in the Installer mode.
4.5 Installer Parameters Table 4.5.1 Category 1 - Room Thermostat Settings Parameter Parameter No.
4.5.2 Category 2 - System Settings Parameter Parameter No.
5) Additional Installation Information 5.1 Binding / Rebinding Procedure The binding operation described below is required if: • Any of the system components (room thermostat or receiver box) are replaced. • The receiver box has incorrect or no binding data stored (e.g. when pre-bound system pack components have been mismatched). NOTE: During the binding procedure keep approximately 1m distance between the room thermostat and the receiver box. To bind/rebind: 1.
6) Trouble Shooting 6.1 Trouble Shooting Guide Symptom (Fault Message) Possible Cause Remedy The room thermostat displays the symbol but the receiver box relay does not switch on. This is normal operation. The receiver box cycles the relay on and off for times proportional to the demand signal (0-100%) from the room thermostat. The symbol only indicates that the demand value is greater than 0%. button change the Using the temperature setpoint by a few degrees.