Lennox International Inc 51M37 Displaying Outside Temperature, Check Outside Temperature

Page 32

Displaying Outside Temperature

Pressing the ENTER (Outside) button at the HOME screen displays the outside temperature (see figure 15) for several seconds, then returns to room temperature.

Check Outside Temperature

After either programmed interval has elapsed, the remind-

er will be displayed as shown in figure 17.

 

 

Reminders

PROG

MO

I0:26

AM

A B C D

 

HOLD PM

88

Fan Hold

Settings Enter

(Outside)

Figure 15

FAN ON

AUTO

FILTER SERVICE

MAINTENANCE

ROOM

76°

COOL

OFF

AUTO

EMG.

HEAT

Filter &

Maintenance

Indicators

SETTINGS − Filter/Maintenance Reminders

The 51M39 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-

FAN ON

AUTO

FILTER SERVICE

MAINTENANCE

ROOM

76°

COOL

OFF

AUTO

EMG.

HEAT

Service

Indicator

Flashing

minder as shown in figure 16 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 16

The default setting for the reminders is OFF (disabled). Press Up/Down arrow buttons to select the desired re- minder intervals.

Table 1

Filter and Maintenance Reminders

Buttons to

 

Available Settings and

Use

Reminder

How to Use

 

 

 

Settings

FILTER

Total fan run time expressed in

(1st press)

 

months (Off, 1, 3, 6, 12); for

 

then Arrows

 

example, if fan runs 12 hours a day,

to scroll

 

1 month reminder displays in 2

selections

 

calendar months.

 

 

 

Settings

MAINTE-

Elapsed chronological time in

(2nd press)

NANCE

months (Off, 6, 12). Use this, for

then Arrows

example, to remind yourself when to

 

to scroll

 

perform routine checks or when to

selections

 

call a technician for perodic

 

 

preventive maintenance.

 

 

 

Enter

 

Stores settings.

 

 

 

NOTE − The HOME screen will reappear about 15 seconds after the final arrow button press. OR, press the ENTER button at any time to store any changes and exit to the HOME screen.

Figure 17

After the filter has been changed or maintenance per-

formed, reset the reminder by pressing the SETTINGS

button for 4 seconds at the corresponding reminder set-

tings screen. The screen will blink for a few moments to in-

dicate that the timer has been reset.

Service Indicator

When abnormal equipment operation is detected, the

SERVICE indicator will flash on the screen (see figure 17).

This indicates that the equipment requires service from a

qualified service technician.

Thermostat RESET

Under some abnormal conditions, it may be necessary to

the thermostat to its default condition. Such a RE-

SET would delete all programming and settings and there-

fore should only be used on rare occasions when the the thermostat fails to function as designed and/or as pro- grammed. Such an instance can occur as a result of a pow- er surge or similar electrical disturbance (e.g. after an elec- trical storm or power outage). The RESET button can be

used to recover from this situation.

CAUTION

When the RESET button is pressed, ALL settings re- vert back to the defaults, including the default pro- gram (see tables 2 and 3).

The RESET button is an unlabeled, recessed button lo- cated behind the door on the right−hand side of the thermo- stat, below the SETTINGS button (see figure 3). Use a pa- per clip or small pencil to press the RESET button; ALL thermostat settings will be reset to the defaults listed in the

Default Thermostat Settings section.

Page 6

505068M 07/05

Page 31 Page 33
Image 32
Page 31 Page 33
Contents 51M37 Merit Series Buttons, Backlight, Timers & Settings DAY/TIME − Setting the Day and TimeThermostat Buttons Home ScreenHeat − Using the Heat Mode FANCool − Using the Cool Mode Enabling and Disabling Cool ModeCool Mode Disabled Turn Cool ON/OFFI036 FAN PM I036 FANSettings − Filter/Maintenance Reminders FAN − Controlling the Fan OperationSettings − Balance Point Service IndicatorThermostat Reset Removing/Installing ThermostatDefault Thermostat Settings Technical SpecificationsSmart Setback Recovery via DIP switch #6 Equipment Protection TimersOver−Temperature Protection Maintenance ReminderHeating Demands Thermostat Output TableCooling Demands 51M35 Merit Series 51M35 Merit Series Thermostat505049M 5/1/05 Heat − Using the Heat Mode Cool − Using the Cool Mode Enabling and Disabling Heat ModeHeat/Cool Mode Disabled Turn Heat ON/OFFHold − Using Temperature Hold Modes 1st press Removing and Installing Thermostat I0i451M35 Terminal Designations Thermostat Outputs Gas Heat, Auto FanGas Heat, Continuous Fan Electric Heat, Auto Fan51M34 Merit Series 51M34 Merit Series Thermostat505048M 5/1/05 51M34 Series 5/2 I036 FAN OFF I0i4 51M34 Terminal Designations Heat Demand Cool Demand No Demand 51M39 Merit Series 51M39 Merit Series ThermostatI026 I030 Heat/Cool Mode Disabled Cooling Demand530 Auto − Using the Autochangeover Mode Copy a Programmed Day to An other Day Displaying Outside Temperature Check Outside TemperatureFilter Maintenance Indicators Service Indicator FlashingDefault Program Settings Time & Temp Indoor Temperature Measurement Range Outdoor Temperature Measurement RangeAutochangeover Deadband Selection via DIP switch #7 51M39 Terminal DesignationsThermal-mechanical switch opens W1 and W2 at 93F+/−6F Page −Day Programmable Thermostat 51M42 Merit Series51M42 Merit Series Thermostat 505069M 07/05 Large Heat Heating Demand FAN Auto MID Reminder Settings Display Using Fan on I026 Default Program Settings − Time & Temp With Electric Backup no outdoor sensorTechnical Specifications 51M42 Terminal Designations 51M38 Merit Series 51M38 Merit Series ThermostatY/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.
Top Page Image Contents