Bedienungsanleitung Honeywell RTH1120 (Seite 1 von 8) (Englisch)

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RTH1120 69-1875EF 22/2/06 1/4

The RTH110B non-programmable thermostat can be used to con-

trol:

• 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

• 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 SYSTEM.

n Remove the old thermostat to access the wires.

Attention: 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.

o Identify and label each wire (with the corresponding letter on

the wire terminal) and remove them from the terminals.

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

q Wrap the wires around a pencil to prevent

them from falling into the wall.

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

using a non-flammable material in order

to avoid air draughts behind the thermo-

stat.

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.

n Remove the thermostat faceplate.

o Loosen the locking screw to separate the thermostat from its

baseplate (the screw cannot be completely removed).

p Tilt the thermostat upwards.

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

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

r 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

RTH1120

Non-programmable Electronic Thermostat

Installation and User Guide

Display

Adjustment

buttons

System operating

mode selector

Fan operating

mode selector

Backlight

button

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

GFan G, F

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Honeywell RTH1120 Anleitung

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