Instruction/ maintenance manual of the product CM900 Honeywell
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CM90 0 W ir eless Installation Guide CM927 / CM921 W ireless Pr ogrammab le Room Thermostat & BDR91 Rela y Bo x Description The Honeywell CM900 Wireless (CM927 or CM921) is a modern wireless programmable room thermostat based on Honeywell’ s proven programming philosophy .
2 CM900 Wireless - P rogrammab le Room Thermostat 1) Installation Inf ormation 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 per formance of the RF system.
Installation Guide 3 2) Installing the CM900 Wireless System Please follow the illustrations and infor mation below in sequence to install the Relay Box and room thermostat correctly . For applications other than gas boilers, enabling special features and to see what other system options are available r efer to section 4) Installer Mode .
4 CM900 Wireless - P rogrammab le Room Thermostat 2.2 Installing the Room Thermostat 2.2.1 P ower Up 1. Remove the batter y cover and inser t 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).
Installation Guide 5 2.2.3 Locating the Room Thermostat While still in the T est Mode, as described in section 2.2.2 , the room ther mostat should be located taking the following into consideration and reviewing the illustrations below: 1. Find a suitable location where the signal transmission is reliable.
6 CM900 Wireless - P rogrammab le Room Thermostat 3.1 A utomatic Operation The Relay Box receives the heat demand (0- 100%) signal from the room ther mostat. The room thermostat will display the symbol on the LCD display whenever more heat is required.
Installation Guide 7 4.1 Entering Installer Mode 4.2 BDR91 Relay Bo x F ail-Safe Mode Setup The failsafe mode defines the Relay Box output relay status if the RF communication is lost (e.g. when the room ther mostat stops communicating due to discharged batteries).
8 CM900 Wireless - P rogrammab le Room Thermostat 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.
Installation Guide 9 4.5 Installer P arameters T able 4.5.1 Category 1 - Room Thermostat Settings Notes 1) Remember to always press the gr een button to confirm that you want to store your new Installer Set- Up setting. T o exit the Installer Mode move the slider switch to the AUT O or MAN position.
10 CM900 Wireless - P rogrammab le Room Thermostat 4.5.2 Category 2 - System Settings Notes 1) Remember to always press the gr een button to confirm that you want to store your new Installer Set- Up setting. T o exit the Installer Mode move the slider switch to the AUT O or MAN position.
Installation Guide 11 5) Additional Installation Inf ormation 5.1 Binding / Rebinding Procedure The binding operation described below is requir ed if: • Anyofthesystemcomponents(roomthermostatorRelayBox)arer eplaced.
6) T roub le Shooting 6.1 T rouble Shooting Guide 50039987-003 A © 2009 Honeywell International Inc. Manufactured for and on behalf of the Environmental and Combustion Contr ols Division of Honeywell T echnologies Sàrl, ACS-ECC EMEA, Z.A. La Pièce 16, 1180 Rolle, Switzerland by its Authorised Representative Honeywell International Inc.
An important point after buying a device Honeywell CM900 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Honeywell CM900 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Honeywell CM900 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Honeywell CM900 you will learn all the available features of the product, as well as information on its operation. The information that you get Honeywell CM900 will certainly help you make a decision on the purchase.
If you already are a holder of Honeywell CM900, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Honeywell CM900.
However, one of the most important roles played by the user manual is to help in solving problems with Honeywell CM900. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Honeywell CM900 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
