Honeywell RTH2520B Owner's Manual

RTH2520

69-1867ES—05

03-11

1/8

The RTH2520 programmable thermostat can be used to control:

•

a gas, fuel oil or electric furnace -2 or 3 wires

•

a central air conditioner - 2 or 3 wires

•

a hot water system with or without pump - 2 wires

•

a millivolt system - 2 wires

•

a central heating and cooling system - 4 or 5 wires

Note

: This thermostat is not compatible with heat pumps or multi-

stage systems.

Features

•

System operating mode selection: heat, cool or off

•

Fan operating mode selection: automatic or on (continuous)

•

Programmable heating and cooling cycle lengths: 10, 12, 15, 20

or 30 minutes

•

Temperature display in °F or °C

•

Backlit display

•

Battery replacement indicator

•

7-day programming including:

- Preprogrammed energy-saving schedule

- Early Start

- Temporary bypass

- Time display (12 h or 24 h)

•

Filter replacement indicator

•

Automatic daylight savings changeover

•

Interchangeable faceplates (titanium, charcoal & taupe)

2.1

Removing the Old Thermostat

IN ORDER TO AVOID ANY RISK OF ELECTRIC SHOCK, CUT

POWER TO THE HEATING/COOLING SYSTEM.



Remove the old thermostat to access the wires.

Warning

: If the old thermostat was mounted onto an electrical box,

it was probably powered by 120/240 volts. In this case, this thermo-

stat cannot be used.



Identify and label each wire (with the corresponding letter on

the wire terminal) and remove them from the terminals.



If necessary, strip the end of each wire (maximum of 1/4 inch).



Wrap the wires around a pencil to prevent

them from falling into the wall.



If the hole in the wall is too big, insulate it

using a non-flammable material in order to

avoid air draughts behind the thermostat.

2.2

Installing the New Baseplate

For a new installation, choose a location approximately 5 feet

(1.5 m) above the floor and on an inside wall. Avoid draughty

areas (top of staircase, air outlet, etc.), dead air spots (behind

doors), direct sunlight or areas near concealed pipes or chim-

neys.



Remove the thermostat faceplate.



Loosen the locking screw in order to separate the thermostat

from its baseplate (the screw cannot be completely removed).



Gently tilt the thermostat upwards.



Mark and bore the appropriate mounting holes (using a 3/16”

drill bit) or use the existing holes. Insert the plastic anchors.



Pass the wires through the opening of the baseplate and fix the

baseplate to the wall using the screws provided.

2.3

Connecting the Thermostat

Refer to the following table for matching the wire labels with the

thermostat terminals.

Note

: Do not connect wires identified as C, X or B. Wrap the bare

end of these wires with electrical tape.

Important

: The red jumper wire between Rh and Rc terminals must

be removed in a 5-wire installation.

1. Introduction

2. Installation

RTH2520

Programmable Thermostat

Installation and User Guide

Adjustment

buttons

Display

System operating

mode selector

Fan operating

mode selector

Backlight

button

Programming

buttons

RTH2520 terminals

Description

Wire labels

Rh

Heating power supply

Rh, R, 4, V

Rc

Cooling power supply

Rc, R

W

Heating signal

W, W1, H

Y

Cooling signal

Y, Y1, M

G

Fan

G, F

69-1867ES-05

Section	Page
RTH2520	1
Programmable Thermostat	1
Installation and User Guide	1
Introduction	1
Installation	1
2.1 Removing the Old Thermostat	1
2.2 Installing the New Baseplate	1
2.3 Connecting the Thermostat	1
2.3.1 2-wire Heating	2
2.3.2 2-wire Cooling	2
2.3.3 3-wire Heating	2
2.3.4 3-wire Cooling	2
2.3.5 4-wire Heating and Cooling	2
2.3.6 5-wire Heating and Cooling	2
2.4 Setting JP2 Jumper	2
2.5 Installing the Batteries	2
2.6 Completing the Installation	2
Basic Functions	2
3.1 System Operating Mode	2
3.2 Fan Operating Mode	3
3.3 Displaying the Temperature	3
3.4 Setting the Temperature	3
3.5 Backlight	3
3.6 Thermostat Control Mode	3
3.6.1 Manual/Permanent Hold Mode	3
3.6.2 Programmable Mode	3
3.7 Filter Replacement Indicator	3
3.8 Battery Replacement Indicator	3
Configuration Menu	3
Programming	3
5.1 Setting the Time and Day	3
5.2 Setting the Date	3
5.3 Energy-saving Schedule	4
5.4 Modifying the Schedule	4
Technical Specifications	4
Warranty	4
Service	4
69-1867ES-05_A_SpanishG.pdf	5
Termostato programable	5
Instalación y guía para el usuario	5
Introducción	5
Instalación	5
2.1 Extracción del termostato viejo	5
2.2 Instalación de la nueva placa de base	5
2.3 Conexión del termostato	5
2.3.1 Calefacción con 2 cables	6
2.3.2 Enfriamiento con 2 cables	6
2.3.3 Calefacción con 3 cables	6
2.3.4 Enfriamiento con 3 cables	6
2.3.5 Calefacción y enfriamiento 4 cuatro cables	6
2.3.6 Calefacción y enfriamiento con 5 cables	6
2.4 Configuración del puente JP2	6
2.5 Instalación de las baterías	6
2.6 Finalización de la instalación	6
Funciones básicas	6
3.1 Modo de funcionamiento del sistema	6
3.2 Modo de funcionamiento del ventilador	7
3.3 Indicación de la temperatura	7
3.4 Ajuste de la temperatura	7
3.5 Iluminación posterior	7
3.6 Modo de control del termostato	7
3.6.1 Modo manual o de retención permanente	7
3.6.2 Modo programable	7
3.7 Indicador de reemplazo del filtro	7
3.8 Indicador de cambio de baterías	7
Menú de configuración	7
Programación	7
5.1 Ajuste de la hora y el día	7
5.2 Ajuste de la fecha	8
5.3 Programa para ahorrar energía	8
5.4 Modificación del programa	8
Especificaciones técnicas	8
Garantía	8

Honeywell RTH2520B Owner's Manual

Honeywell RTH2520B Manual

Honeywell RTH2520B manual content summary: