1.

Press and release the PROG button. "MO" (Monday),

 

"AM 6:00", period "A", "COOL SETPOINT 78", and

 

"HEAT SETPOINT 70" are displayed. "AM 6" flashes.

2.

Use the Up/Down arrow buttons to select the desired

 

hour; press the PROG button when the desired hour

 

is reached; use the Up/Down arrow buttons again to

 

select desired minute. The selected hour/minute is

 

when the program will start. Press the PROG button.

3.

Use the Up/Down arrow buttons to select the desired

Using Fan ON

i0:30

72

Heat Cool

Prog Auto

Copy Day/Time

Fan Hold

 

heat setpoint; press the PROG button.

4.

Use the Up/Down arrow buttons to select the desired

 

cool setpoint; press the PROG button.

5.

Repeat steps 1 4 for Monday, periods B, C, and D.

Figure 12

If auto fan mode is selected (AUTO displayed in FAN box − see figure 13), the fan will only run when the heating or cooling equipment is running.

6. COPY A PROGRAM − If the program entered for

Monday is satisfactory for other days of the week, do

the following to repeat the same program for other

days:

A Press the PROG button, then press the COPY

button. The display clears the screen except for

from MO

COPY button again to copy Monday’s program.

B The display changes to

Using Fan Auto

i0:30

72

Heat Cool

Prog Auto

Copy Day/Time

Fan Hold

row buttons to scroll to the desired day where you

want the same program as Monday. Press the

COPY button.

C Repeat steps A and B for as many days as you

want the same program.

Copy a Programmed Day to Another Day

 

Heat

Cool

 

Copy from MO

Prog

Auto

 

 

Copy Day/Time

 

 

Fan

Hold

(DOOR

 

 

 

 

 

 

OPEN)

 

Settings Enter

 

 

 

(Outside)

 

Figure 11

7.Repeat steps 1 5 to program different times and tem- peratures for days not yet programmed.

FAN − Controlling the Fan Operation

Use the FAN button to select either continuous fan mode or auto fan mode.

To change from continuous to auto fan mode (or vice ver- sa), press the FAN button. Note whether a fan icon in the FAN box is present (indicating that the fan is running) or not (fan not running).

If continuous fan mode is enabled (ON displayed in FAN box − see figure 12), the fan will run continuously regard- less of whether the heating or cooling equipment is run- ning.

Figure 13

Displaying Outside Temperature

Pressing the ENTER (Outside) button at the HOME screen displays the outside temperature (see figure 14) for several seconds, then returns to room temperature.

Check Outside Temperature

88

Fan Hold

Settings Enter

(Outside)

Figure 14

SETTINGS − Filter/Maintenance Reminders

The 51M38 thermostat is designed to remind you when the filter needs changing or when routine maintenance is re- quired, as (and if) defined, by you. These optional remind- ers are not enabled until you activate them. To do so, press the SETTINGS button once or twice for the desired re- minder as shown in figure 15 and as described in table 1.

Reminder Settings Display

OFF

For FILTER, press SETTINGS button 1 time

 

 

 

 

FILTER

 

 

 

 

For MAINTENANCE, press

 

 

MAINTENANCE

SETTINGS button 2 times

Figure 15

Page 5

51M38 SERIES 5/2

Page 51
Image 51
Lennox International Inc 51M37 operation manual Repeat steps a and B for as many days as you

51M37 specifications

Lennox International Inc, a prominent player in the heating, ventilation, and air conditioning (HVAC) market, has made significant strides in innovation and technology in recent years. Among its notable offerings is the Lennox 51M37, a well-engineered component designed to enhance HVAC efficiency and reliability.

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