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

Page 51

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 50 Page 52
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Page 50 Page 52
Contents 51M37 Merit Series Home Screen Buttons, Backlight, Timers & SettingsDAY/TIME − Setting the Day and Time Thermostat ButtonsFAN Heat − Using the Heat ModeTurn Cool ON/OFF Cool − Using the Cool ModeEnabling and Disabling Cool Mode Cool Mode DisabledPM I036 FAN I036 FANFAN − Controlling the Fan Operation Settings − Filter/Maintenance RemindersRemoving/Installing Thermostat Settings − Balance PointService Indicator Thermostat ResetTechnical Specifications Default Thermostat SettingsMaintenance Reminder Smart Setback Recovery via DIP switch #6Equipment Protection Timers Over−Temperature ProtectionThermostat Output Table Cooling DemandsHeating Demands 51M35 Merit Series Thermostat 51M35 Merit Series505049M 5/1/05 Turn Heat ON/OFF Heat − Using the Heat Mode Cool − Using the Cool ModeEnabling and Disabling Heat Mode Heat/Cool Mode DisabledHold − Using Temperature Hold Modes 1st press I0i4 Removing and Installing Thermostat51M35 Terminal Designations Electric Heat, Auto Fan Thermostat OutputsGas Heat, Auto Fan Gas Heat, Continuous Fan51M34 Merit Series Thermostat 51M34 Merit Series505048M 5/1/05 51M34 Series 5/2 I036 FAN OFF I0i4 51M34 Terminal Designations Heat Demand Cool Demand No Demand 51M39 Merit Series Thermostat 51M39 Merit SeriesI026 Heat/Cool Mode Disabled Cooling Demand 530I030 Auto − Using the Autochangeover Mode Copy a Programmed Day to An other Day Service Indicator Flashing Displaying Outside TemperatureCheck Outside Temperature Filter Maintenance IndicatorsDefault Program Settings Time & Temp 51M39 Terminal Designations Indoor Temperature Measurement RangeOutdoor Temperature Measurement Range Autochangeover Deadband Selection via DIP switch #7Thermal-mechanical switch opens W1 and W2 at 93F+/−6F Page 51M42 Merit Series 51M42 Merit Series Thermostat−Day Programmable Thermostat 505069M 07/05 Large Heat Heating Demand FAN Auto MID Reminder Settings Display Using Fan on I026 With Electric Backup no outdoor sensor Default Program Settings − Time & TempTechnical Specifications 51M42 Terminal Designations 51M38 Merit Series Thermostat 51M38 Merit SeriesY/TIME button 51M38 Series 5/2 Hold − Using Temperature Hold Modes Repeat steps a and B for as many days as you Settings Thermostat Output Table 51M38 Terminal Designations

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.

The 51M37 is primarily known for its advanced motor technology, incorporating ECM (Electronically Commutated Motor) design, which significantly reduces energy consumption compared to traditional motor systems. This motor type is key to Lennox's commitment to sustainability, as it not only maintains optimal performance but also minimizes the carbon footprint associated with residential and commercial heating and cooling tasks.

A standout feature of the 51M37 is its intelligent control system, which allows for more precise management of airflow and temperature. This technology can adapt to specific environmental conditions and consumption patterns, optimizing performance and providing substantial cost savings on energy bills. The integration of smart technology aligns with modern demands for energy efficiency and control, making the 51M37 a vital component in achieving higher energy ratings for HVAC systems.

In terms of compatibility, the 51M37 is engineered to work seamlessly with a variety of Lennox heating and cooling units, ensuring versatility for both new installations and retrofits. This compatibility enhances system integration, resulting in improved overall performance.

The construction of the 51M37 emphasizes durability and reliability, featuring high-quality materials that withstand the challenges of constant operation. Its robust design is perfect for diverse environments, ensuring that it functions reliably in both residential settings and commercial applications.

Another characteristic worth noting is the user-friendly installation process, allowing HVAC technicians to install the 51M37 with relative ease. This not only reduces labor costs but also ensures that the system can commence operation quickly without extensive downtime.

Overall, Lennox International's 51M37 embodies innovation, efficiency, and reliability in HVAC technology. With its advanced ECM motor, intelligent controls, and durable construction, it stands as a prime example of how modern HVAC solutions can lead to enhanced performance and energy savings. As the industry continues to evolve, products like the 51M37 will play a critical role in shaping the future of heating and cooling, aligning with sustainability goals and meeting the needs of consumers.
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