Honeywell CM900 Manual de usuario

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42011076-003

CM900 RF INSTALLATION GUIDE (UK - English)

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CM900 RF

Installation Guide

CM900 Wireless

Installation Guide

CM927 / CM921 Wireless Programmable

Room Thermostat & HC60NG Receiver Box

Description

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.

The CM927/921 room thermostat communicates

with the HC60NG receiver box on an 868MHz Radio

Frequency (RF) band to control a single heating

system component such as a boiler, pump or

zone valve. Neither product will communicate with

other RF products that use different frequencies or

communication protocols.

Note: The RF link between the individual

room thermostat (CM927/921) and receiver

box (HC60NG) in system packs provided by

Honeywell is pre-conﬁgured at the factory and

therefore SHOULD be installed at the same site.

This makes the installation process fast and easy,

but if products from individual system packs are

separated, or mixed with other pre-conﬁgured

system packs during installations please refer to

section 5.1 Binding / Rebinding Procedure to

bind the desired units together and allow them to

communicate with each other.

Table of Contents

Section Page

1) Installation Information ................................. 2

2) Installing the CM900 Wireless System......... 3

2.1 Installing the Receiver Box .............................. 3

2.2 Installing the Room Thermostat ........................ 4

2.2.1 Power Up............................................... 4

2.2.2 RF Communication Check ........................ 4

2.2.3 Locating the Room Thermostat ................. 5

2.3 System Check................................................ 5

3) Basic Operation of the System..................... 6

3.1 Automatic Operation....................................... 6

3.2 Temporary Manual Override............................. 6

3.3 Communication Loss ...................................... 6

4) Installer Mode................................................. 6

4.1 Entering Installer Mode ................................... 7

4.2 HC60NG Receiver Box Fail-Safe Mode Setup .... 7

4.3 Using the Room Thermostat for Speciﬁc Applications

.. 8

4.4 Using the Special Features of the Room Thermostat

.. 8

4.5 Installer Parameters Table ............................... 9

4.5.1 Category 1 - Room Thermostat Settings ..... 9

4.5.2 Category 2 - System Settings.................. 10

5) Additional Installation Information............. 11

5.1 Binding / Rebinding Procedure ...................... 11

5.2 Multi-Zone System........................................ 11

6) Trouble Shooting.......................................... 12

6.1 Trouble Shooting Guide................................. 12

6.2 Diagnostics Mode ........................................ 12

42011076-003 R2

 CM900 Wireless - Programmable Room Thermostat

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. It

is important to take into consideration that walls and ceilings will reduce the RF signal. The strength of the

RF signal reaching the receiver box depends on the number of walls and ceilings separating it from the

room thermostat, as well as the building construction - the diagram below illustrates an example of typical

signal strength reduction. Walls and ceilings reinforced with steel or plasterboard walls lined with metal foil

reduce the RF signal signiﬁcantly more.

Once a position is selected for the room thermostat this can be checked using the RF Communication

Test mode as described in section 2.2.3 Locating the Room Thermostat. If the position is unsuitable the

receiver box will not respond and an alternative position must be selected.

Typical example of Building Fabric Signal losses

Wall Wall Wall

Ceiling

Max. Signal Length 30 metres

= Signal Strength

Installation Guide 

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

The receiver box is a RF device. For

the best performance install in an

open space. Leave at least 30cm

distance from any metal objects

including wall boxes and boiler

housing.

Do not mount on metal wall

boxes.

NOTE: The receiver box contains no user serviceable parts. It should be

opened and installed by qualiﬁed installer only.

WARNING: Electrostatic sensitive device! Do not touch the circuit board.

NOTE: All wiring must be in accordance with IEE

regulations

CAUTION: Observe ambient temperature and current

limits (see the receiver box wiring label)

1.5-2.5mm²

a. Burner (direct control) b. Combi boiler

c. Zone valve d. Cooling device

2 3

> 7mm Ø

< 7mm Ø

5a. b.

6mm max.

 CM900 Wireless - Programmable Room Thermostat

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).

On the initial power up the available user interface languages will be displayed (only on certain models).

Use the

buttons to cycle through the options until the desired language is displayed. Press the

green button to conﬁrm the selection.

3. Set the slider switch to the DATE mode.

4. Use the or buttons to set the correct day / month / year, pressing the green button to

conﬁrm.

5. Use the or buttons to set the correct time, pressing the green button to conﬁrm.

2.2.2 RF Communication Check (Test Mode)

To check the RF communication, hold the room thermostat about 2-3 metres from the installed receiver

box. Move the slider on the room thermostat to the OFF position then press the and buttons together

with the button for 3 seconds. The unit will display ‘TEST TRANSMIT’ and it will send test signals to the

receiver box, ﬂashing the green LED on every 6 seconds (relay output will remain off) for a maximum of 10

minutes. When the green LED ﬂashes on every 6 seconds proceed to the next step.

NOTE: If the green LED is not switched at speciﬁed intervals, the red LED is ﬂashing or if you are installing

a replacement receiver box or room thermostat, follow the procedures described in section 5.1 Binding

/ Rebinding Procedure.

Install the batteries (included) and attach the instruction label to ﬂap

Installation Guide 

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:

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. Install the room thermostat EITHER on the wall using the wall bracket OR attach the optional table stand

as shown in below.

3. Exit the Test Mode by moving the setting slider to the required operating mode (AUTO or OFF).

2.3 System Check

Now a simple test can be completed to check the full system has been installed correctly:

1. Set the slider switch to the OFF mode.

2. Check the boiler supply is on and check that the green LED on the receiver box is off.

3. Set the slider switch to the MAN mode.

4. Adjust the setpoint up to the maximum (35°C) by pressing the button. The boiler should come on

(green LED ON on receiver box) after a few seconds and the symbol appears on the room thermostat

LCD display.

5. Set the slider switch to the OFF mode. The boiler will go off (green LED OFF on receiver box) after a

few seconds and the symbol disappears.

6. Check the system operation by moving the slider between MAN and OFF modes several times, bearing

in mind the switching delay referred to above.

Now, you should have completed the installation successfully - to begin operating at the default factory

settings move the slider to the AUTO mode or select PROG to modify the built-in heating program

accordingly.

Wall bracket Table stand

• The room thermostat should be installed in an open space for best performance as it is a radio frequency device.

•

Leave at least 30cm distance from any metal objects including wall boxes and at least 1 metre from any other

electrical equipment eg. radio, TV, PC etc.

• Do not mount onto metal wall boxes. • It is recommended that the receiver box is fully installed.

 CM900 Wireless - Programmable Room Thermostat

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

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.

3) Basic Operation of the System

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.

Push button and

relay status LED’s

HC60NG Receiver Box

Installation Guide 

4.1 Entering Installer Mode

4.2 HC60NG Receiver Box Fail-Safe Mode Setup

The failsafe mode deﬁnes the receiver box output relay status if the RF communication is lost (e.g. when

the room thermostat stops communicating due to discharged batteries). The factory setting keeps the

relay permanently off when communications is lost. If this factory setting needs to be changed follow the

instructions below:

1. Enter Installer mode as described above.

2. Press the button to enter category 2 parameters.

3. Select the parameter 7:LC by pressing the button.

4. Select the fail-safe mode by pressing or buttons:

• 0 - when RF communication is lost the relay will be held in OFF position.

• 1 - when RF communication is lost the relay output will cycle at 20% on 80% off.

5. Press the green button to accept the change.

6. Attach appropriate label to the receiver box to indicate the selected fail-safe mode.

IMPORTANT: To enable the frost protection when RF communication is lost, select the fail-safe mode 1. For

systems with separate frost protection thermostat or where frost protection is not required select fail-safe

mode 0.

COPY

DAY

1..

CM9

DATE

PROG

AUTO

MAN

OFF

Move the slider switch to the OFF mode.

Press and hold the button and the two &

buttons together.

Press the or to

change factory setting.

The display will ﬂash

indicating that a change

has been made.

Press the green

button to conﬁrm the

change.

The display will stop

ﬂashing.

Press button to go to Installer parameter group

category 2 ( ) (from Parameter n.1 to n.14).

To exit the installer mode, move the slider switch to

the AUTO or MAN positions.

Press button to go

to the next parameter.

The unit will display the ﬁrst parameter of installer

parameter group category 1 (from Parameter n.1

to n.19) as shown

1 2

3 4

5 6

 CM900 Wireless - Programmable 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 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. The table below lists the most common settings used for speciﬁc

applications.

4.4 Using the Special Features of the Room Thermostat

Special Feature: Description: Enable/Disable

Optimisation

(Variable Start

Time)

The thermostat will adjust the start time in the morning/afternoon so the

desired temperature is reached by the start of the program period. The

system will restrict the start time to a max of 2 hours.

To enable: Set parameter 8:

OP (category 1) to 1.

Heating or Cooling

Operation

This product can be used for heating or cooling applications. If you select

cooling mode the control algorithm and factory default program will be

modiﬁed. You can independently modify the heating and cooling proﬁle.

To enable: Set parameter 4:

HC (category 2) to 1.

Summer/Winter

Auto time change

This feature moves time automatically on the last Sunday of March and

the last Sunday of October. The feature is factory enabled.

To enable: Set parameter 3:

tC (category 1) to 1.

Temperature Offset If the thermostat is located in a particularly hot/cold location for reliable

signal transmission reasons then the measured/displayed temperature

can be adjusted by +/- 3°C. This is useful if the homeowner wants the

reading to match another appliance temperature display.

Set parameter 12:tO

(category 1) to the required

offset value.

Upper/Lower

Temperature Limit

The normal upper temperature limit of 35°C can be reduced to 21°C

to save the homeowner energy. The normal lower limit of 5°C can be

increased up to 21°C to protect inhabitants from cold.

Set parameter 6:uL (category

1) to the desired upper limit.

Set parameter 7:LL (category

1) to the desired lower limit.

Speciﬁc Application: Setting: What to change:

Cycle/

Hour

Minimum ON

Time

Note: All parameters listed below belong to category 2

- System Parameters (see Installer Parameters Table)

HEATING Gas Boiler (<30kW) 6 1 No changes required

Oil Boiler 3 4 Set 1:Ot parameter to 4

Set 2:Cr parameter to 3

Thermal Actuator 12 1 Set 2:Cr parameter to 12

Zone Valve 6 1 No changes required

Electric Heating

(resistive load <8A)

12 1 Set 2:Cr parameter to 12

Set 3:EH parameter to 1

AIR-

CONDITIONING

To enable switching between cooling and heating

modes adjust parameter 4:HC in category 2 (0 =

disabled, 1 = enabled). Now you can switch between

these modes by pressing the and buttons

together for 5 seconds in any of the product operating

modes (AUTO, MAN or OFF). Explain to the end user

how to switch between these modes using the and

buttons and ensure the cooling program is modiﬁed

as required.

Heat Pump / Air-

Conditioner

3 4 Set 1:Ot parameter to 4

Set 2:Cr parameter to 3

Fan Coil 6 1 No changes required

Installation Guide 9

4.5 Installer Parameters Table

4.5.1 Category 1 - Room Thermostat Settings

Notes

1) Remember to always press the green button to conﬁrm that you want to store your new Installer Set-

Up setting. To exit the Installer Mode move the slider switch to the AUTO or MAN position.

Parameter Parameter

No.

Factory Default Setting Optional Setting

Category 1 Parameters – Room Thermostat Settings

Display Description Display Description

AM-PM / 24hr

Display

1:CL 24 24 hr clock display

format

12 12 hr – AM/PM clock display format

Reset Time/ Temp

Program

2:rP 1 Time / Temp proﬁle set

to factory default

Changes to 0 when

one of the time/temp

proﬁles are changed

0 Time / Temperature are as programmed

To restore the factory proﬁle set to 1

Auto Summer/

Winter Time

Change

3:tC 1 Auto Summer/Winter

Time Change Enabled

0 Auto Summer/Winter Time Change

Disabled

LCD Backlighting 5:bL 1 Backlighting Enable 0 Backlighting Disabled

Upper Temp Limit 6:uL 35 35°C Upper Temp.

Limit

21 to

21°C to 34°C adjustment in 1°C steps

Lower Temp Limit 7:LL 5 5°C Lower Temp. Limit 5 to 21 6°C to 21°C adjustment in 1°C steps

Optimisation 8:OP 0 Optimisation Disabled 1 Optimisation Enabled

Temperature Offset 12:tO 0 No temperature offset -3 to

-3°C to +3°C adjustment in 0.1°C steps

Proportional Band

Width

13:Pb 1.5 Proportional band of

1.5 degrees

1.6 to

3.0

1.6°C to 3.0°C adjustment in 0.1°C steps

Reset Parameters

to Factory Defaults

19:FS 1 All settings at factory

defaults

Changes to 0 when

one of the parameter

is changed

0 Settings are as modiﬁed above

To restore the factory proﬁle set to 1

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