Lennox 51m34 User Manual In Spanish

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05/05

505,049M

*2P0505*

*P505049M*

Page 1

E2005 Lennox Industries Inc.

Dallas, Texas, USA

Lennox Thermostat 51m34 Troubleshooting

RETAIN THESE INSTRUCTIONS

FOR FUTURE REFERENCE

51M35 Merit

®

Series Thermostat

The Lennox Merit

®

Series 5/2 day programmable

electronic thermostat 51M35 provides excellent
temperature control and a large, easy-to-read display. This
product includes a programmable filter change reminder,
an equipment maintenance reminder, and a system check
indicator to notify the user when the equipment requires
service.
Thermostat 51M35 is suitable for non-heat pump, two-
stage heat/two-stage cool applications using a gas or elec-
tric furnace.

OPERATION
MANUAL

51M35

Merit

®

Series

5/2 Day Programmable Thermostat

CONTROLS

505,049M
05/05
Supersedes 03/05

Table of Contents

51M35 Series Thermostat

. . . . . . . . . . . . . . . . . . . . . .

General

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Initial Thermostat Power-up

. . . . . . . . . . . . . . . . . . . . .

Buttons, Backlight, Timers & Settings

. . . . . . . . . . . .

DAY/TIME − Set Day and Time

User Manual For Iphone

. . . . . . . . . . . . . . . . . .

HEAT − Heat Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

COOL − Cool Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

HOLD − Temperature Hold Mode

. . . . . . . . . . . . . . . .

PROG − Thermostat Programming

. . . . . . . . . . . . . . .

Lennox 51m34 User Manual In Spanish

FAN − Controlling Fan Operation

. . . . . . . . . . . . . . . . .

SETTINGS − Filter /Maintenance Reminder

. . . . . . .

Service Indicator

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Thermostat RESET

. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Removing/Installing Thermostat

Spanish

. . . . . . . . . . . . . . . . .

Default Thermostat Settings

. . . . . . . . . . . . . . . . . . . .

Technical Specifications

. . . . . . . . . . . . . . . . . . . . . . . .

Thermostat Output Table

. . . . . . . . . . . . . . . . . . . . . . .

General

These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.

Check equipment for shipping damage. If you find any
damage, immediately contact the last carrier.

Introduction

This document describes the operation of Lennox thermostat
51M35. Refer to the installation manual for instructions re-
garding installation and wiring of the thermostat.

Initial Thermostat Power-up

When power is initially applied to the thermostat, the dis-
play will appear as shown in figure 1.

FAN
ON
AUTO

SYSTEM
COOL
OFF
EMG.
HEAT

I8:88

88

Figure 1

AM

PM

Lennox 51m34 Manual

ROOM

88

MO TU WE TH FR SA SU

SETPOINT

°

°

Initial Power−Up Display

SERVICE

FILTER

MAINT

Hi
Lo

PROG

A | B | C | D

HOLD

All display segments are momentarily activated. This oc-
curs as a normal part of thermostat initialization.

Lennox 51m34 User Manual In Spanish Language

Litho U.S.A.

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