White Rodgers 1E30N-910, 1E50N-301 User Manual

Installation Instructions for:
Vertical Snap Action
1E30N-910 1E50N-301
YOUR THERMOSTAT REPLACES
Standard Heat Only Systems
Electric Furnace
Heat Pump (No Aux or Emergency Heat)
Gas or Oil Heat
Millivolt Heat Only Systems
PREPARATIONS
1
Assemble tools required: power drill, fl at blade screwdriver, wire cutter/stripper, level.
Failure to follow and read all instructions carefully before installing or op­erating this control could cause personal injury and/or property damage.
THERMOSTAT FEATURES
2
Captive screws
70
60
80
50
90
50
60
70
80
90
COVER
THERMOSTAT
BASE
Figure 1. Thermostat with subbase or wallplate
REMOVING OLD THERMOSTAT
3
CAUTION
!
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.
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 thermostat consists of three basic parts:
a. The cover, which may be either a snap-on or hinge type.
b. The base, which is removed by loosening all captive screws.
c. The switching subbase, 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.
1E30N-910
1E50N-301
WALLPLATE
SWITCHING
SUBBASE
Mounting
Screw
4
RH
G
S
Mounting
Mounting
Screw
O
Y
F
S
Screw
F
T E
H
M
E A T
W
REMOVING OLD THERMOSTAT (cont’d)
3
If no heat anticipator/indication is showing, do not be concerned; move on to the next step.
ATTE NT ION ! This product does not contain mercury. However, this produc t may replace a unit which contains mercury.
Do not open mercur y cells. If a cell becomes damaged, do not touch any spilled mercur y. Wearing non -absorbent gloves, take up the spilled mercur y and place into a container which can be sealed. If a cell becomes damaged, the unit should be discarded.
Mercur y must not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container. Refer to www.white­rodger s.com for location to send product containing mercur y.
MOUNTING AND WIRING
4
WARNING
!
Do not use on circuits exceeding specifi ed voltage. Higher voltage will damage control and could cause shock or fi re 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 I I circuits per the NEC code.
A. Remove base from subbase or wallplate: Loosen the screws on the base and
remove.
B. Mount switching subbase or wallplate: Use the screws provided to mount the
subbase or wallplate to wall (see Fig. 1).
C. Attach wires to appropriate terminals: Two wire systems (Heat Only) . Attach
one wire to RH and one to wire W.
D. Mount Thermostat Base: Gently push excess wire back into the wall opening
and plug hole with a fi re-resistant material, such as fi berglass insulation to pre­vent drafts from affecting thermostat operation. Mount the thermostat base to the subbase or wallplate using the three captive screws on the thermostat base. (See Fig. 1) Tighten the screws securely. Proceed to Step #5.
CAUTION
!
Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat. Personal injury and/or property damage may occur.
TERMINAL CROSS REFERENCE CHART
New Thermostat Other Manufacturers’ Terminal Designation Terminal Designation
R H 4 R H M R 5 R
W W W H 4 W
SET HEAT ANTICIPATOR
5
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 rating 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 fi g. 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
Rotate contact arm to adjust heat anticipator
clock wise to shorten heating cycles. Adjustments should not be greater than 1/2 marking at a time.
For millivolt operation, rotate contact arm to Millivolt Link.
Snap on Cover: Carefully align the cover with the base and snap the cover onto the base.
Millivolt Link
Arrow points to the current rating of the primary control
Figure 2. Anticipator adjustment
www.white-rodgers.com
PART NO. 37-6844B
Replaces 37-6844A
0920
NEW THERMOSTAT OPERATION
6
This thermostat is easy to operate. After power is turned on, use the system switch to select heating, or to turn the heating system off.
SPECIFICATIONS
7
ELECTRICAL DATA
Switch Rating...................................... 24 VAC (30 VAC max.)
Heating.................................................. 0.15 to 1.2 Amps
Anticipator Rating:
Heating.................................................. Adjustable from 0.15 to 1.2 Amps
THERMAL DATA:
Temperature Range............................. 50°F to 90°F (10°C to 32°C)
Operating Humidity Range................. 0 – 90% noncondensing
TROUBLESHOOTING
8
WR
Heating System
Figure 3. Typical wiring for single transformer heating system
Heat
Anticipator
(adjustable)
THERMOSTAT
SYSTEM
24 VAC 12 0 VAC
Hot
Neutral
Symptom Possible Cause Corrective Action
No Heat/ No Fan 1. Blown fuse or tripped circuit breaker. Replace fuse or reset breaker.
(common problems) 2. Furnace power switch to OFF. Turn switch to ON.
3. Furnace blower compartment door or Replace door panel in proper position to engage
panel loose or not properly installed. safety interlock or door switch.
No Heat 1. Pilot light not lit. Re-light pilot.
2. Broken or melted anticipator wire. Excessive current or dead short in system. Have a qualifi ed service person check the system
3. Loose connection to thermostat before replacing thermostat.
or system. Verify thermostat and system wires are securely attached.
4. Thermostat or heating system requires Your furnace manufacturer or service person can describe how to test the heating system to
replacement or service. verify it is operating correctly. If the heating system is capable of operation and the no heat
5. System Switch not set to Heat. condition persists, replace the thermostat.
Set System Switch to Heat and raise temp above room temp.
Intermittent Heat 1. Furnace Lock-Out Condition Many furnaces have safety devices that shut the system down when a lock-out condition occurs.
If the heat works intermittently contact the furnace manufacturer or local service person for assistance.
Heat or Fan Runs 1. Possible short in wiring. Check each wire connection to the thermostat to verify it is neatly looped under the terminals.
Constantly. 2. Possible short in thermostat. No extra wire should stick out from under the terminals.
3. Possible short in heat/cool/fan system.
Furnace Cycles Too Fast See Step 5, Adjusting the Anticipator. The anticipation setting is the only adjustment that effects the heating cycle rate. If an accept-
or Too Slow Narrow or able cycle rate is not achieved using the anticipator contact a local service person for addi-
wide temperature swing tional suggestions. The location of the thermostat, size of the Heat/Cool System and current
draw can infl uence the cycle rate.
Thermostat Setting and 1. Thermostat thermometer setting The thermometer can be adjusted by using a standard slotted screwdriver. Turn the thermom-
Thermostat Thermometer requires adjustment. eter pointer screw located inside the front cover to change the setting. For calibrating the
Disagree 2. Thermostat setting lever requires setting lever contact a local heating and cooling service person.
calibration.
Adjusting Thermometer 1. Thermostat thermometer disagrees The thermometer on the thermostat is accurately calibrated at our factory but you can adjust it
with other room thermometers. by using a standard slotted screwdriver. Turn the thermometer pointer screw located inside
the front cover to change the setting.
White-Rodgers is a division of Emerson Electric Co.
The Emerson logo is a trademark and service mark of Emerson Electric Co.
HOMEOWNER HELP LINE: 1-800-284-2925
www.white-rodgers.com
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