Honeywell CM900 Manual

Honeywell Termostat CM900

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42010942-003 R1

CM900 Installation Guide

Programmable Room Thermostat

42010942-003 R1

The Honeywell CM900 (CM907 or CM901) is a modern programmable room

thermostat based on Honeywell’s proven programming philosophy. To further

improve the ease of use, this product includes a very large LCD display with

backlighting and a Dynamic Text Display to assist customers during daily use.

Installing the Thermostat

4 1

Notes:

Remember to always press the green button to conrm that you want to store your new Installer Set-Up setting. To exit the move Installer Mode

the slider switch to the AUTO MAN or positions.

System Commissioning

To enter the diagnostic mode move the slider switch to the position then press and hold the OFF button for 5 sec. The unit will enter the user

settings mode. Next press and hold the and buttons together. The unit will hold the relay on for 5 minutes and the following information can

be viewed on the display by pressing the or buttons. : model ID, date code (WW/YY) and checksum.

Parameter Parameter No.

AM-PM / 24hr Display

Reset Time/ Temp Program

Auto Summer/Winter Time

Change

LCD Backlighting

Upper Temp Limit

Lower Temp Limit

Optimisation

Telephone Override

Second Sensor

Temperature Offset

Proportional Band Width

Reset Parameters to Factory

Defaults

Minimum boiler ON time

Cycle Rate

Electric Heat

Heat/Cool Change

Pump Exercise

1:CL

2:rP

3:tC

5:bL

6:uL

7:LL

8:OP

9:tS

10:SS

12:tO

13:Pb

19:FS

1:Ot

2:Cr

3:EH

4:HC

5:PE

Installer Parameters Table:

Category 1 Parameters

Programmable Thermostat Settings

Factory Default Setting

Display

0.0

1.5

Display

Description

12 hr – AM/PM clock display format

Time / Temperature prole set to factory

default.

Changes to 0 when one of the time/temp

proles are changed.

Auto Summer/Winter Time Change

Enabled

Backlighting Enabled

35°C Upper Temp. Limit

5°C Lower Temp. Limit

Optimisation Disabled

Telephone Override Disabled

Second Sensor Disabled

No temperature offset

Proportional band of 1.5 degree

All settings at factory defaults

Changes to 0 when one of the parameter

is changed

Description

1 minute minimum ON time

6 cycles per hour (cph)

Resistive Loads <3 A

Disabled

Pump exercise disabled

Optional Setting

Display

21 to 34

5 to 21

1 or 2

-3 to +3

1.6 to 3.0

Display

2 to 5

3, 9 or 12

Description

24 hr clock display format

Factory Time / Temperature prole has

been modied

To restore the factory prole set to 1

Auto Summer/Winter Time Change

Disabled

Backlighting Disabled

21°C to 34°C adjustment in 1°C steps

5°C to 21°C adjustment in 1°C steps

Optimisation Enabled

Telephone Override Enabled

Second Sensor Enabled:

1 = Outside Sensor

2 = Remote Room Sensor

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

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

Settings are as modied above

To restore the factory parameters set to 1

Description

Selection of 2, 3, 4 or 5 minutes minimum

ON time

Selection of 3, 9 or 12 cph

Resistive loads 3 to 8 A

Enabled

Pump exercise enabled

Category 2 Parameters

System Settings (press PROGRAM to access this category)

“Manufactured for and on behalf of the Environment and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorised Representative Honeywell International Inc.”

= M3.5

= N

1.0-2.5mm²

6mm max.

123

24-230V

50-60Hz

24-230V

50-60Hz

230V

50-60Hz

230V