White Rodgers M30 User manual

Installation Instructions for
Model M30
CONTENTS
Preparations ...........................................
1
Thermostat Features ..............................
2
Removing Old Thermostat......................
3
Mounting and Wiring...............................
4
Set Heat Anticipator................................
5
New Thermostat Operation.....................
6
Specifications .........................................
7
Troubleshooting ......................................
8
1
PREPARATIONS
2
THERMOSTAT FEATURES
3
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)
No
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.
4
MOUNTING AND WIRING
5
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.
3
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
7
SPECIFICATIONS
6
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
!

8
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.

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White-Rodgers is a division
of Emerson Electric Co.