White Rodgers 1E56N-444 White-Rodgers Mercury Free Mechanical Manual De Usuario

Standard Heating & Cooling Systems –

4 or 5 wires 

Standard Heat Only Systems 

Standard Central Air Conditioning 

Gas or Oil Heat 

All Models

Hydronic (Hot Water) Zone Heat – 2 wires

Electric Furnace 
Heat Pump (No Aux or Emergency Heat) 

 

Heat Pump (with Aux or Emergency Heat)

Baseboard Electric Heating or Line Voltage 

None

(120 or 240 Volt) 
Millivolt Heat Only Systems – 

Floor or Wall Furnaces 

All Models

Hydronic (Hot Water) Zone Heat – 3 wires

A.  Remove base from subbase: Loosen the screws on the base and remove.
B.  Mount switching subbase: Use the screws provided to mount the subbase or 

wallplate to wall (see Fig. 1).

• For two wire systems (Heat Only or Cool Only). Replace subbase with wall-
plate. If you have a two-wire 

Heat Only system, attach one wire to R and one to 

wire 

W. If you have a two-wire Cool Only system, attach one wire to R and one to 

wire to 

Y. Tighten any unused terminals securely. (see Fig. 5 and 6).

 

• If your system has more than two wires: Use the cross reference chart to 
determine correct wire connections. If you have a four-wire heat/cool system leave 
the factory installed jumper between 

RC and RH attached (see Fig 2.). If your sys-

tem has five wires remove the factory installed jumper between 

RC and RH (see 

Fig 3.).

• Electric heat or single stage heat pump systems: These thermostats are 
configured from the factory to operate a heat/cool, fossil fuel (gas, oil, etc.) forced 
air system. This is correct for any system that DOES NOT require the thermostat 
to energize the fan on a call for heat. If your system is an electric heat or heat-
pump system that REQUIRES the thermostat to turn on the fan on a call for heat, 
remove the yellow factory-installed jumper wire from the 

Y terminal and connect  

it to the 

A terminal. This will allow the thermostat to energize the fan immediately 

on a call for heat. If you are unsure if the heating system requires the thermostat 
to control the fan, contact a qualified heating and air conditioning service person. 
For single stage heat pump applications (no auxillary heat), install a short jumper 
wire (not included) across terminals 

W and Y. If the system has a reversing valve 

connection energized in Cooling, attach it to 

O. If the system has a reversing valve 

connection energized in Heating, attach it to 

B (see Fig. 4). This thermostat will not 

provide multi-stage heating or cooling.

D.  Mount Thermostat  Base:  Gently  push  excess  wire  back  into  the  wall  opening 

and plug hole with a fire-resistant material, such as fiberglass insulation to prevent 
drafts from affecting thermostat operation. Mount the thermostat base to the sub-
base using the three captive screws on the thermostat base. (See Fig. 1) Tighten 
the screws securely. Proceed to Step #5.

Horizontal 

1F56N-444

Snap-Action
Vertical  

1E56N-444

Snap-Action

2

1

3

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

OFF

FAN

AUTO

ON

SYSTEM

COOL

HEAT

Mounting Screw

Hole

in Wall

Mounting Screw

6

Y

4

5

R

Mounting Hole

Mounting Hole

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/cool 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

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-rodg-
ers.com for location to send product containing mercury.

4

 

 

 

 

 

* 

*

 

RH 

4 

RH 

M 

R5 

R

 

RC 

R 

R 

V 

– 

–

 

G 

G 

G 

F 

G 

G

 

W 

W 

W 

H 

4 

W

 

Y 

Y 

Y 

C 

Y6 

Y

*   These are four-wire, single-transformer systems. Factory installed jumper wire 
  between the RH and RC terminals must remain in place.

Replaces 37-6881A

0921