Bedienungsanleitung Honeywell RTH2520 (Seite 3 von 8) (Englisch, Französisch)

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RTH2520 69-1867EF-1 13/6/06 3/4

3.2 Fan Operating Mode

Use the selector switch to set the fan to automatic

mode (AUTO) or continuous mode (ON).

Note: This switch is not used in a 2-wire installation

as the fan is not connected to the thermostat in this

type of installation.

3.3 Displaying the Temperature

The actual temperature is normally displayed. To view the setpoint,

press once on one of the buttons. The setpoint is displayed for

5 seconds along with the icon.

Note: Pressing either of the buttons more than once will

change the setpoint.

3.4 Setting the Temperature

Press one of the buttons until the desired temperature is dis-

played.

3.5 Backlight

The display illuminates for 12 seconds when the backlight button or

either of the buttons is pressed.

3.6 Thermostat Control Mode

3.6.1 Manual/Permanent Hold Mode

Maintains the temperature at a fixed setpoint. To place the thermo-

stat in this mode, press [ Mode ]. The house icon will disappear.

3.6.2 Programmable Mode

Maintains the temperature according to the energy-saving sched-

ule. To place the thermostat in this mode, press [ Mode ]. The cur-

rent period will be displayed. The four possible periods are:

To see the default program settings, see section 5.3.

Temporary Bypass

If you modify the setpoint (using the buttons) when the thermo-

stat is in Programmable mode, the thermostat will use the new set-

point for the next 2 hours. The house icon flashes during the

bypass. Afterwards the thermostat will return to the temperature set-

ting of the period currently underway.

3.7 Filter Replacement Indicator

After 500 hours of operation, an icon appears to indi-

cate that the filter needs replacement. Once the filter

is replaced, press [Filter] for 3 seconds to remove

the icon and reset the counter.

3.8 Battery Replacement Indicator

Install fresh batteries immediately when the icon starts

flashing. The icon flashes for 120 days before the bat-

teries are depleted. You should replace batteries once

a year or before leaving home for more than a month

even if the icon has not appeared.

After replacing the batteries, set the time, day and date (see sec-

tions 5.1 and 5.2). However, the temperature and program settings

are saved and do not need to be re-entered.

Warning: Before removing the batteries, place the

system switch on the thermostat to Off. Otherwise, the

heating/cooling unit might still be running even after

the batteries are removed.

n To access the configuration menu, press the backlight button

for 3 seconds.

o To go to the next parameter (menu item), briefly press the back-

light button.

p To modify a parameter, press .

q Repeat steps 2 and 3 if necessary.

r Press the backlight button for 3 seconds to exit the configura-

tion menu.

5.1 Setting the Time and Day

n Press [ Clk ]. The hour flashes.

o Set the hour using .

p Press [ Clk ]. The minutes flash.

q Set the minutes using .

r Press [ Clk ]. The day flashes.

s Set the day using . (MO: Monday, TU: Tuesday,

WE: Wednesday, TH: Thursday, FR: Friday, SA: Saturday and

SU: Sunday).

t Press [ Exit ] to exit.

5.2 Setting the Date

The date is needed for automatic daylight savings changeover.

n Press [ Clk ] for 3 seconds to display the year.

AUTO

The fan operates only when the heating or cooling sys-

tem is On (typical setting).

The fan operates continuously. Use this setting to

improve air circulation and air cleaning.

Wake up Leave for work Return home Sleep

4. Configuration Menu

DISPLAY DESCRIPTION DEFAULT OPTIONS

Temperature display °F °C or °F

Time display 12 h 12 h or 24 h

Early start

Off On or Off

Automatic daylight savings

changeover

Off On or Off

Heating cycles per hour

2, 3, 4, 5 or 6

Cooling cycles per hour

2, 3, 4, 5 or 6

When Early Start is On, the thermostat determines when to start heating or cooling

so that the desired temperature is reached at the set time.

When this function is On, the thermostat automatically switches to daylight savings

time on the second Sunday of March and to normal time on the first Sunday of

November (see section 5.2).

Use the Heat/Cool selector switch to switch between the heating parameter and the

cooling parameter.

For optimal heating control, use the setting that matches your system as follows:

2=30 min (steam, gravity), 3=20 min (hot water, 90%+ high-efficiency furnace), 4=15

min (gas or oil), 5=12 min (alternate setting for gas or oil), 6=10 min (electric).

The corresponding cooling cycle lengths are: 2=30 min., 3=20 min., 4=15 min.,

5=12 min., 6=10 min.

5. Programming

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