Friedrich RT2 Manual Do Utilizador

3

This thermostat has been carefully confi gured at the factory to provide 
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 qualifi ed HVAC contractor.

If it has been determined that re-confi guration of the thermostat 
is required, the following instructions will assist the professional 
HVAC installer in accomplishing this task: 
While in confi guration mode, three option choices can be made:
 

A

 Anticipator 

Value 

Adjustment

 

d

 

Display temperature Fahrenheit/Celsius Selection

 

o

F

  Offset Adjustment for Room Temperature 

 

C

r

 

Cycle rate.  Maximum number of cycles per hour

Press and hold the FAN button for approximately 10 sec until 
room temperature disappears and the display reads 

“A"

.  You 

are now in the confi guration mode.

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

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 fi rst.  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 

confi guration 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 confi guration mode.

d

.  FAHRENHEIT/CELSIUS Selection

This selection operates the thermostat in either Fahrenheit or 
Celsius.

TO SELECT:

1. Enter 

confi guration 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 confi guration mode.

 o

F

.  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 

confi guration mode (if not already there).

2.  Use UP and DOWN buttons to display 

o

F

.

3.  Press MODE button once to display offset value.

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

-5 

and 

5

.

5.  Press MODE button to return to 

o

F

.   UP and DOWN 

buttons now move between option choices; or press 
FAN button to exit confi guration Mode.

 C

r

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

TO SELECT:

1. Enter 

confi guration mode (if not already there).

2.  Use up and down buttons to display 

C

r

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 

C

r

.  Up and down but-

tons now move between option choices or press FAN 
button to exit confi guration mode.

 o

P

.  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 

confi guration mode (if not already there).

2.  Use UP and DOWN buttons to display 

o

P

.

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 

o

P

.   UP and DOWN but-

tons now move between option choices; or press FAN 
button to exit confi guration Mode.

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