Honeywell RTH1120 Handleiding

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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)

2.1Removing the Old Thermostat

IN ORDER TO AVOID ANY RISK OF ELECTRIC SHOCK, CUT

POWER TO THE HEATING SYSTEM.

nRemove 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.

oIdentify and label each wire (with the corresponding letter on

the wire terminal) and remove them from the terminals.

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

qWrap the wires around a pencil to prevent

them from falling into the wall.

rIf 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.

2.2Installing 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.

nRemove the thermostat faceplate.

oLoosen the locking screw to separate the thermostat from its

baseplate (the screw cannot be completely removed).

pTilt the thermostat upwards.

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

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

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

baseplate to the wall using the screws provided.

2.3Connecting 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 selectorFan operating

mode selector

Backlight

button

RTH2520 terminalsDescriptionWire labels

RhHeating power supplyRh, R, 4, V

RcCooling power supplyRc, R

WHeating signalW, W1, H

YCooling signalY, Y1, M

GFanG, F

Product specificaties