Honeywell T4039A User Manual

T4039A,B,D-M,S,V

Line Voltage Cooling and

Heating-Cooling Thermostats

T4039 Thermostats Control Line Voltage Valves of
a fan coil unit in cooling, manual changeover heat­ing-cooling, or automatic changeover heating-cool­ing systems. One or two valves may be controlled
directly by the thermostat. The fan switch (where
applicable) controls air circulation.

■ 1-, 2-, or 3-speed manual fan control available.

■ Positive deadspot separates heating-cooling circuits

in automatic models. Remote changeover switch is

required to separate circuits in manual changeover

heating-cooling models.

■ Scale range is approximately 55° F to 95° F [13° to

35° C] in 10° F [6° C] increments from 75° F [24°

C] midpoint. Scale is marked COOL-WARM.

■ Cooling circuit breaks in FAN-OFF position to re-

duce condensation problems in the fan coil unit.

■ Color-coded leadwires.

■ All models can be mounted on standard vertical

outlet boxes. Models with manual switching can be
mounted on 4 in. square junction boxes or 2­ganged outlet boxes.

■ Adjustable range stops limit temperature adjust­ment or lock at selected setpoint.

■ Models available with separate power source for
fan and thermostat.

CONTENTS

Specifications ................................................. 2

Ordering Information ..................................... 2

Installation ..................................................... 5

Operation ....................................................... 8

Checkout......................................................... 8

J. H. • Rev. 10-92 • ©Honeywell Inc. 1992 • Form Number 60-2241—8

1 60-2241—8

T4039A,B,D-M,S,V
SPECIFICATIONS • ORDERING INFORMATION

Specifications

MODELS:

System Switching

Cooling Only Off-On
Cooling Only Hi-Med-Lo T4039B

Heating-Cooling

Heating Cooling

Heating-Cooling

Automatic Heating-Cooling None T4039G
Automatic Heating-Cooling — T4039H

Automatic Heating-Cooling Off-Hi-Lo
Automatic Heating-Cooling Off-Hi-Lo

Automatic Heating-Cooling Hi-Med-Lo

Autoamtic Heating-Cooling Hi-Med-Lo T4039M

Automatic Heating-Cooling Hi-Med-Lo T4039S

Automatic Heating-Cooling Hi-Lo T4039V

a

See Fig. 4 for arrangements of switches.

b

OFF breaks cooling circuit and fan circuit.

c

Remote changeover switch required.

d

OFF breaks both heating and cooling circuits and

c

c

c

Manual

Off-On
— T4039D

Off-On
Off-Hi-Lo

—
Hi-Med-Lo T4039F

Off-On

Off-On

—

Off-On

Off-On

Heat-Off-Cool

Off-On

a

b

b

d

b

b

d

b
d

b

d

d

d

fan circuit.

Model

T4039A

T4039E

T4039J
T4039K

T4039L

ELECTRICAL RATINGS:

A. Thermostat (valve load).

Normal (A) Inrush (B)

120 Vac 0.32 1.00
240 Vac 0.16 0.50
277 Vac 0.14 0.43

B. Fan Switch

Full Load (A) Locked Rotor (A)

120 Vac 5.5 33.0
240 Vac 2.75 16.5
277 Vac 2.4 14.4
10A Resistive at 125 Vac
5A Resistive at 240 Vac

4.2A Resistive at 277 Vac

TEMPERATURE SETTING RANGE: Approximately

55° F to 95° F [13° C to 35° C]; marked COOL­WARM in 10° F [6° C] increments from 75° F [24° C]
midpoint.

DIFFERENTIAL: Approximately 2° F [1° C] at mid-

scale. On automatic heating-cooling models, the
differential from make of one contact to make of
the opposite contact is 7° F [4° C] maximum with a
positive deadspot.

DIMENSIONS: See Figs. 1 and 2.

Ordering Information

When purchasing replacement and modernization products from your TRADELINE® wholesaler or your distributor, refer to the
TRADELINE Catalog or price sheets for complete ordering number, or specify—

1. Model number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or phone:

1. Your local Honeywell Home and Building Control Sales Office (check white pages of your phone directly).

2. Home and Building Control Customer Satisfaction
Honeywell Inc., 1885 Douglas Drive North
Minneapolis, Minnesota 55422-4386 [phone]

In Canada—Honeywell Limited/Honeywell Limitée, 740 Ellesmere Road, Scarborough, Ontario M1P 2V9. International Sales and
Service offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France, Germany, Japan, Mexico,
Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

2

T4039A,B,D-M,S,V

SPECIFICATIONS

FINISH: Silver bronze. T4039M is available in white.
MOUNTING: Models without manual switching mount

on standard vertical outlet boxes. Models with manual
switching mount on 4-in. square junction boxes or
2-ganged outlet boxes. Manual switching models may

Fig. 1—Mounting dimensions in in. [mm] of
T4039 models with manual switching.

also mount on a standard vertical outlet box if local
codes permit. See Fig. 3.

UNDERWRITERS LABORATORIES, INC. LISTED: File

No. E4436, Vol. 2, dated 3-19-73; Guide No. XAPX.

Fig. 2—Mounting dimensions in in. [mm] of
T4039 models without manual switching.

3 60-2241—8

T4039A,B,D-M,S,V
SPECIFICATIONS

Fig. 3—Mounting T4039.

4

T4039A,B,D-M,S,V

INSTALLATION

Installation

WHEN INSTALLING THIS PRODUCT…

1. Read these instructions carefully. Failure to follow

them could damage the product or cause a hazardous
condition.

2. Check the ratings given in the instructions and on

the product to make sure the product is suitable for your
application.

3. Installer must be a trained, experienced service

technician.

4. After the installation is complete, check out product

operation as provided in these instructions.

CAUTION

Disconnect power supply to prevent electrical shock
or equipment damage.

Before mounting, be sure to remove cardboard shipping

inserts that protect the contacts.

1. Remove T4039 cover by loosening the cover screw

with Allen wrench.

2. Open the cardboard inside cover by pressing inward on

the left side to release latch. Do not remove this cover.

3. Carefully remove the shipping inserts from around the

snap contacts.

4. Check contact operation before mounting device.

MOUNTING

Models without manual switching mount on standard
vertical outlet boxes. Models with manual switching
mount on 4-in. square junction boxes or 2-ganged outlet
boxes. Manual switching models can also mount on stan­dard vertical outlet boxes if local electrical codes permit.

Mount thermostat on side wall about 5 ft. [1.5 m] above
the floor. Do not mount where thermostat can be affected by
drafts, radiant heat from the sun or other sources of heat.

Use Allen wrench to open cover and mount according
to Fig. 3. Two mounting screws are provided.

WIRING

Disconnect power supply before beginning installa­tion to avoid electrical shock or equipment damage. All
wiring must comply with local codes and ordinances.

Internal schematic and external connections for the
T4039 are shown in Fig. 4. Use solderless connectors or
other approved methods to wire thermostat into the sys­tem. Six-inch color-coded leadwires are provided.

SETTING

The T4039 temperature scale is marked COOL-WARM
with approximate scale divisions of 10° F from 75° F
[24° C] midpoint. The range is approximately 55° F to 95°
F [13° C to 35° C]. Set lever at desired temperature.

To adjust the temperature setpoint range stops, Fig. 3,
locate stops at the desired temperature range setpoint
and insert.

5 60-2241—8

T4039A,B,D-M,S,V
INSTALLATION

Fig. 4—Internal schmeatics and external connections for T4039 Thermostats.

BLUE

1

OFF

ON

HI

MED

LO

1

OFF

ON

RISE

YELLOW

ORANGE

BLUE
TAN

YELLOW

RISE

ORANGE

RED

T4039B

RED

TO FAN

T4039A

TO COOLING
CONTROL

L1 (HOT)

L1 (HOT)

TO FAN
SPEED CONTROL

TO COOLING
CONTROL

L1 (HOT)

HI

LO
MED
HI

RISE

T4039F

BLUE

TAN

YELLOW

RISE

BROWN

ORANGE

RED

TO FAN
SPEED CONTROL

TO HEATING
CONTROL

L1 (HOT)
TO COOLING

CONTROL

MED

3

LO

OFF

1

ON

T4039G

RED

RISE

BROWN

ORANGE

TO COOLING
CONTROL

TO HEATING
CONTROL

L1 (HOT)

OFF

ON

1

OFF

HI

LO

BLUE

RED

RISE

RISE

2

YELLOW

ORANGE

T4039D

TO FAN

TO COOLING CONTROL

BROWN

TO HEATING
CONTROL

L1 (HOT)

L1 (HOT)

T4039H

BLUE

RED

RISE

3

OFF

ON

2

YELLOW

ORANGE

TO FAN

TO COOLING CONTROL

BROWN

TO HEATING
CONTROL

L1 (HOT)

L1 (HOT)

3

T4039E

RED

TO COOLING CONTROL

RISE

LO

RISE

BROWN

ORANGE

BLUE

HI

YELLOW

TO HEATING
CONTROL

L1 (HOT)

TO FAN
SPEED CONTROL

1

OFF BREAKS COOLING AND FAN CIRCUITS.

OFF BREAKS HEATING, COOLING AND FAN CIRCUITS.

2
3

SEPARATE POWER SOURCE FOR THERMOSTAT AND
FAN. CONNECT ORANGE AND YELLOW FOR
SINGLE POWER SOURCE IF NEEDED.

M5353

6

T4039A,B,D-M,S,V

INSTALLATION

Fig. 4—Internal schmeatics and external connections for T4039 Thermostats

T4039J

TO HEATING
CONTROL

L1 (HOT)

TO FAN
SPEED CONTROL

TO COOLING
CONTROL

TO HEATING
CONTROL

TO FAN
SPEED CONTROL

TO HEATING
CONTROL

L1 (HOT)

TO COOLING
CONTROL

BLACK

HI

MED

LO

OFF

2

4

ON

MED

HI

LO

HI

MED

LO

HEAT

OFF

2

COOL

HI

LO

2

OFF

ON

RISE

OFF

HI

LO

LO

1

M5352

LO
HI

RED

RISE

ORANGE

BLUE

YELLOW

1

TYPICAL T4039K

RED

RISE

2

OFF

HI

HI

MED

LO

OFF

ON

1

OFF BREAKS COOLING AND FAN CIRCUITS.

OFF BREAKS HEATING, COOLING AND FAN CIRCUITS.

2

SEPARATE POWER SOURCE FOR THERMOSTAT AND

3

FAN. CONNECT ORANGE AND YELLOW FOR SINGLE
POWER SOURCE IF NEEDED.

THE WIRE COLORS OF THE T4039K1024 MODEL DIFFER

4

FROM THE TYPICAL T4039K MODELS AS FOLLOWS:

TYPICAL
T4039K

T4039K1024 BROWN RED

LO

HI

YELLOW

ORANGE

BLUE

YELLOW

T4039L

LO

MED

HI

RISE

BLUE
TAN

YELLOW

ORANGE

BLUE

L1 (HOT)

BROWN

RED

RED

BLUE YELLOW

TO COOLING
CONTROL

BROWN

BROWN

TO FAN
SPEED CONTROL

BROWN ORANGE

(Continued).

MED

BLACK
YELLOW

HI

LO

BLUE

RISE

LO

HI

RISE

RED

BROWN

ORANGE

TAN

YELLOW
BLUE

BROWN

ORANGE

RED

BROWN

RED

BLUE

YELLOW

T4039M

T4039S

TO FAN
SPEED CONTROL

T4039V

TO FAN
SPEED CONTROL

TO COOLING
CONTROL

BLACK

TO FAN
SPEED CONTROL

TO COOLING
CONTROL

TO HEATING
CONTROL

L1 (HOT)

TO HEATING
CONTROL

L1 (HOT)

TO COOLING
CONTROL

TO HEATING
CONTROL

L1 (HOT)

7 60-2241—8

Operation

In heating applications, as the temperature drops, the
thermostat heating contacts make to open a valve that
allows hot water to flow through the coil. On select models,
the speed at which the heat is circulated is controlled
manually by the fan switch.

In cooling applications, as the temperature rises, the
thermostat cooling contacts close to open a valve that
allows cold water to flow through the coil. Cooling mecha­nism will not operate if manual switch is in the OFF
position. Models T4039D,H,K,M,S,V will also turn off
the heating valve when the manual switch is in OFF.

Check the T4039 before leaving the installation. Raise
the temperature setting to start the heating cycle or lower

In manual changeover heating-cooling models, the
thermostat must be used with a remote changeover switch
or control to select the proper heating or cooling cycle
for the thermostat.

CALIBRATION

The T4039 is accurately calibrated at the factory under
controlled conditions. Do not attempt to field calibrate
this device.

Checkout

the setting to start the cooling cycle. Check both cycles
on heating-cooling models.

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Honeywell International, Inc. Honeywell Limited—Honeywell Limitée
1985 Douglas Drive North 35 Dynamic Drive
Golden Valley, MN 55422 Scarborough, Ontario

M1V 4Z9

8