V. THERMOSTAT CONFIGURATION

Thisthermostathasbeencarefullyconfiguredatthefactorytoprovide optimum operation for most installations. The settings programmed into it at the factory should NOT be changed unless determined to be absolutely necessary by a qualified HVAC contractor.

VI. CHANGING THERMOSTAT CONFIGURATION

If it has been determined that re-configuration of the thermostat is required, the following instructions will assist the professional HVAC installer in accomplishing this task:

While in configuration mode, three option choices can be made:

AAnticipator Value Adjustment

dDisplay temperature Fahrenheit/Celsius Selection oF Offset Adjustment for Room Temperature

Cr Cycle rate. Maximum number of cycles per hour

TO ENTER THE CONFIGURATION MODE:

Press and hold the FAN button for approximately 10 sec until room temperature disappears and the display reads“A". You are now in the configuration mode.

NOTE: If the FAN button is pressed again or if no button is pressed for 2 minutes, the thermostat will exit the configura- tion mode and return to normal operation. To re-enter the configuration mode, the FAN button must be pressed and held for 10 sec. again.

WHILE IN CONFIGURATION MODE, THE FOLLOWING OPTIONS ARE AVAILABLE:

A. ANTICIPATOR - Value Adjustment

This adjustment controls the sensitivity and cycle rate of the thermostat. Higher numbers decrease the sensitivity and slow the cycle rate. Lower numbers increase the sensitivity and increase cycle rate. However, a limiting feature will not allow more than 4 equipment cycles per hour, regardless of setting. Values can range from 1 to 3. Factory default setting is 2. This default selection will provide optimum performance in nearly all installations. Try it first. Do not change setting unless there is evidence of need to do so. Unlike conventional anticipators, this setting is not determined by current draw. There is no need to measure, know, or compensate for current.

TO ADJUST:

1.Enter configuration mode (if not already there).

2.Use up and down buttons to display A

3.Press MODE button once to display current value.

4.Use up and down buttons to move between values.

5.Press MODE button to return to A. Up and down but- tons now move between option choices A, d-,etc. or press FAN button to exit configuration mode.

d. FAHRENHEIT/CELSIUS Selection

This selection operates the thermostat in either Fahrenheit or Celsius.

TO SELECT:

1.Enter configuration mode (if not already there).

2.Use up and down buttons to display d

3.Press MODE button once to display current selection of F or C.

4.Use up and down buttons to change between F and C.

5.Press MODE button to return to d. Up and down buttons now move between option choices; or press FAN button to exit configuration mode.

oF. ROOM TEMPERATURE OFFSET ADJUST Selection The selected number is the number of degrees, plus or minus, which will be added to the actual temperature. The numbers can range between -5 and +5. Factory default is

0.This adjusted value will be used as actual temperature for both display and control action. The effect is that a positive number selection will make the room temperature lower, and vice versa. The thermostat is calibrated within an accuracy of plus or minus 2 degrees when shipped from the factory; this adjustment will provide the best accuracy when set to 0.

TO SELECT:

1.Enter configuration mode (if not already there).

2.Use UP and DOWN buttons to display oF.

3.Press MODE button once to display offset value.

4.Use UP and DOWN buttons to select a value between -5and 5.

5.Press MODE button to return to oF. UP and DOWN buttons now move between option choices; or press FAN button to exit configuration Mode.

Cr. CYCLE RATE Selection

This selection selects the cycle rate maximum in cycles per hour.

TO SELECT:

1.Enter configuration mode (if not already there).

2.Use up and down buttons to display Cr

3.Press MODE button once to display current selection 3 to 6.

4.Use up and down buttons to change.

5.Press MODE button to return to Cr. Up and down but- tons now move between option choices or press FAN button to exit configuration mode.

oP. OPERATING MODE – H/C or HP operation

The selected mode (H/C or HP) will operate the thermostat as a Heat Cool or as a Heat Pump thermostat.

TO SELECT:

1.Enter configuration mode (if not already there).

2.Use UP and DOWN buttons to display oP.

3.Press MODE button once to display operating mode.

4.Press UP and DOWN buttons to change between HC and HP.

5.Press MODE button to return to oP. UP and DOWN but- tons now move between option choices; or press FAN button to exit configuration Mode.

NOTE: After changing any thermostat configuration settings, ALWAYS re-check the thermostat in ALL modes to verify proper operation.

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Friedrich RT2 installation instructions VI. Changing Thermostat Configuration, To Enter the Configuration Mode
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RT2 specifications

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