White Rodgers 1E30N-910 User's Manual

White Rodgers Thermostats User's Manual - 1E30N-910.
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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 II circuits per the NEC code.

YOUR THERMOSTAT  REPLACES

System Models

Standard Heat Only Systems

1E30N-910

1E50N-301

Electric Furnace

Heat Pump (No Aux or Emergency Heat)

Gas or Oil Heat

Millivolt Heat Only Systems

PREPARATIONS

Assemble tools required: power drill, fl at blade screwdriver, wire cutter/stripper, level.

Failure to follow and read all instructions carefully before installing or op-
erating this control could cause personal injury and/or property damage.

THERMOSTAT FEATURES

Captive

screws

Mounting

Screw

Mounting

Screw

COVER

THERMOSTAT

BASE

WALLPLATE

SWITCHING

SUBBASE

S
Y
S
T

E

M

O
F
F

H
E
A
T

G

W

RH

Mounting

Screw

50

60

70

80

90

50 60

70 80

90

4

Figure 1. Thermostat with subbase or wallplate

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.

CAUTION

!

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.

3

REMOVING OLD THERMOSTAT (cont’d)

If  no  heat  anticipator/indication  is  showing,  do  not  be  concerned;  move  on  to  the 
next step.

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  container.  Refer  to  www.white-
rodgers.com for location to send product containing mercury.

MOUNTING AND WIRING

WARNING

!

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 pre-
vent 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.

TERMINAL CROSS REFERENCE CHART

 New 

Thermostat 

Other 

Manufacturers’

 

Terminal Designation 

Terminal Designation

 

R H 

R H 

R 5 

R

 W 

W

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 anticipa-
tor 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 
clockwise 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.

Rotate contact arm 
to adjust heat anticipator

Arrow points to the 
current rating of 
the primary control

Millivolt Link

REMOVING OLD THERMOSTAT

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.

CAUTION

!

SET HEAT ANTICIPATOR

Figure 2. Anticipator adjustment

Installation Instructions for:

Vertical
Snap Action

1E30N-910
1E50N-301

www.white-rodgers.com

PART NO. 37-6844B

Replaces 37-6844A

0920

0.579738s