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Honeywell CM900 manual

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Table of contents for the manual

  • Page 1

    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 . T o further improve the ease of use, this product includes an extra la[...]

  • Page 2

    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. T o assure system reliability , please review and apply the[...]

  • Page 3

    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 . 2.1 Insta[...]

  • Page 4

    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). Use the or button[...]

  • Page 5

    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. Reliable transmission is indicated when th[...]

  • Page 6

    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. Depending on the demand the Relay Box will switch the heating device on to match the current requ[...]

  • Page 7

    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). The factor y setting keeps the relay permanently off when communications is lost. I[...]

  • Page 8

    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. For most typical applications, like wall-hung gas fired combination boiler control or zone valve contr ol, no adjustments from[...]

  • Page 9

    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. Parameter Parameter No. Factory Default Setting [...]

  • Page 10

    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. 2) These parameters are set centrally for the zoning system [...]

  • Page 11

    Installation Guide 11 5) Additional Installation Inf ormation 5.1 Binding / Rebinding Procedure The binding operation described below is requir ed if: • Anyofthesystemcomponents(roomthermostatorRelayBox)arer eplaced. • TheRelay Boxhas incorrect orno bindingdatastor ed(e.g. [...]

  • Page 12

    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. Honeywell[...]