White Rodgers M30 Manuel utilisateur

Installation Instructions for

Model M30

CONTENTS

Preparations ...........................................

Thermostat Features ..............................

Removing Old Thermostat......................

Mounting and Wiring...............................

Set Heat Anticipator................................

New Thermostat Operation.....................

Speciﬁcations .........................................

Troubleshooting ......................................

PREPARATIONS

THERMOSTAT FEATURES

REMOVING OLD THERMOSTAT

Before removing wires from old thermostat’s switching subbase, label

each wire with the terminal designation it was removed from.

1. Remove Old Thermostat: A standard heat thermostat consists

of two basic parts:

a. The cover, which may be either a snap-on or hinge type.

b. The base, which is removed by unscrewing the mounting

screws that hold it on the wall or adaptor plate.

Make a note here of the anticipator setting on the

old thermostat for future reference and use in step 5.

The heat anticipator pointer, if adjustable, will be set at one of a series

of numbers representing the current rating of the primary control in

your furnace. The number will be one of the following: .2, .4, .8, etc.

or 0.2, 0.4, 0.8, etc.

If no heat anticipator/indication is showing, do not be concerned;

move on to the next step.

PART NO. 37-7270B

1546

Failure to follow and read all instructions carefully before

installing or operating this control could cause personal

injury and/or property damage

Assemble tools required as shown below.

WIRE CUTTER/STRIPPER

FLAT BLADE SCREWDRIVER

HAND OR POWER

DRILL WITH 3/16 INCH

DRILL BIT, IF NEEDED

To prevent electrical shock and/or equipment damage,

disconnect electrical power to the system at the main fuse

or circuit breaker until installation is complete.

YOUR THERMOSTAT REPLACES

Description

Standard Heating & Cooling Systems - 4 or 5 wires No

Standard Heat Only Systems Ye s

Millivolt Heat Only Systems - Floor or Wall Furnaces Ye s

Standard Central Air Conditioning No

Gas or Oil Heat Ye s

Electric Furnace Ye s

Hydronic (Hot Water) Zone Heat - 2 Wires Ye s

Hydronic (Hot Water) Zone Heat - 3 Wires No

Heat Pump No

Baseboard Electric Heating or Line Voltage

(120 or 240 Volt)

Adaptor Plate

CAUTION

BASE

COVER

ANTICIPATOR

Figure 1.

MOUN

TING SCREWS

A. Mount base and adaptor plate: Mount base to wall using screws

provided (see Fig. 1).

B. Attach wires: Attach one wire to R and the other wire to W on

base.

MOUNTING AND WIRING

SET HEAT ANTICIPATOR

Set anticipator to match the setting of your old thermostat you noted

in Step 3, or, the anticipator should be set to match the current rat-

ing stamped on your main heating control. The heat anticipator is

adjustable from 0.15 to 1.2 amps. Adjust the anticipator by rotating

the contact arm (see ﬁg. 2). The anticipator setting is indicated by

the numbers on the base that the pointer points to. If you are unsure

where to set the anticipator contact the heater manufacturer for a

recommended setting.

Move the pointer counterclockwise to lengthen heating system

cycles; move clockwise to shorten heating cycles. Adjustments

should not be greater than 1/2 marking at a time.

Snap on Cover: Carefully align the cover with the base and snap

the cover onto the base.

After power is turned on, slide temperature lever to desired setting.

To turn heat off, slide lever all the way to the left until it clicks.

ATTENTION! This product does not contain mercury. However,

this product may replace a unit which contains mercury.

Do not open mercury cells. If a cell becomes damaged, do not touch

any spilled mercury. Wearing non-absorbent gloves, take up the

spilled mercury and place into a container which can be sealed. If a

cell becomes damaged, the unit should be discarded.

Mercury must not be discarded in household trash. When the unit

this product is replacing is to be discarded, place in a suitable con-

tainer. Refer to www.Thermostat-recycle.org for location to send the

product containing mercury.

REMOVING OLD THERMOSTAT

CONTINUED FROM FIRST PAGE

24VAC

50/60 Hz

.35 Amps

Typical Zone Valve

24VAC

50/60 Hz

.23 Amps

Typical Gas Valve

24VAC

50/60 Hz

.43 Amps

Typical Oil Primary

ELECTRICAL DATA

Switch Rating ........................ 24 VAC (30 VAC max.)

Heating ................................... 0.15 to 1.2 Amps

Switch Action ........................ Snap Action

Anticipator Rating:

Heating ................................... Adjustable from 0.15 to 1.2 Amps

SPECIFICATIONS

NEW THERMOSTAT OPERATION

THERMAL DATA:

Temperature Range ............... 50°F to 90°F (10°C to 32°C)

Operating Humidity Range ... 0 – 90% noncondensing

Figure 2. Anticipator adjustment

Rotate contact arm

to adjust heat anticipator

Arrow points to the

current rating of

the primary coontrol

NOTE

For Milivolt Application:

Rotate contact arm

to rest on this rivet.

Do not use on circuits exceeding speciﬁed voltage. Higher

voltage will damage control and could cause shock or ﬁre

hazard.

Do not short out terminals on gas valve or primary control

to test.Short or incorrect wiring will damage thermostat and

could cause personal injury and/or property damage.

Thermostat installation and all components of the system

shall conform to Class II circuits per the NEC code.

WARNING

TROUBLESHOOTING

Symptom Possible Cause Corrective Action

No Heat 1. Blown fuse or tripped circuit breaker.

2. Furnace power switch to OFF.

3. Furnace blower compartment door or

panel loose or not properly installed.

4. Pilot light not lit.

5. Broken or melted anticipator wire.

6. Loose connection to thermostat

or system.

7. Thermostat or heating system re-

quires replacement or service.

Replace fuse or reset breaker.

Turn switch to ON.

Replace door panel in proper position to engage

safety interlock or door switch.

Re-light pilot.

Excessive current or dead short in system. Have

a qualiﬁed service person check the system.

Verify thermostat and system wires are securely

attached.

Your furnace manufacturer or service person

can describe how to test the heating system

to verify it is operating correctly. If the heating

system is capable of operation and the no heat

condition persists, replace the thermostat.

Intermittent Heat 1. Furnace Lock-Out Condition Many furnaces have safety devices that shut the

system down when a lock-out condition oc-

curs. If the heat works intermittently contact the

furnace manufacturer or local service person for

assistance.

Heat Runs Constantly. 1. Possible short in wiring.

2. Possible short in thermostat.

3. Possible short in heat system.

Check each wire connection to the thermostat

to verify it is neatly looped under the terminals.

No extra wire should stick out from under the

terminals.

Furnace Cycles Too Fast or Too Slow

Narrow or wide temperature swing

See Step 5, Adjusting the Anticipator. The anticipation setting is the only adjustment

that effects the heating cycle rate. If an ac-

ceptable cycle rate is not achieved using the

anticipator contact a local service person for ad-

ditional suggestions. The location of the thermo-

stat, size of the Heat/Cool System and current

draw can inﬂuence the cycle rate.

Thermostat Setting and Thermostat

Thermometer Disagree

1. Thermostat thermometer setting

requires adjustment.

2. Thermostat setting lever requires

calibration.

The thermometer can be adjusted by using a

standard slotted screwdriver. Turn the thermom-

eter pointer screw located inside the front cover

to change the setting. For calibrating the setting

lever contact a local heating and cooling service

person.

Adjusting Thermometer 3. Thermostat thermometer disagrees

with other room thermometers.

The thermometer on the thermostat is accurate-

ly calibrated at our factory but you can adjust it

by using a standard slotted screwdriver. Turn the

thermometer pointer screw located inside the

front cover to change the setting.

FOR CALIFORNIA RESIDENTS

Warning: This product contains a chemical known to the state of California to cause cancer and birth defects and other

reproductive harm.

www.white-rodgers.com

White-Rodgers is a division

of Emerson Electric Co.

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