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WARNING

This thermostat is a line voltage (240 Volt) control. Do not
install this thermostat if you are not completely  familiar and
competent with house wiring. If improperly handled, there can
be a risk of 240 volt electric shock hazard which may cause
serious injury or death.

Maximum load for thermostat must not exceed 3800W, other-
wise a potential fire hazard exists.

INSTALLATION

!

Location: 

Install a vertical switch box for mounting the T4800/ 

CT1750 approximately 1.5m ( 5 feet) above the floor on an
inside wall where the thermostat will be subjected to average
room temperature. Do not place above heater. 

The thermostat should be placed away from concealed

warm or cold water pipes, warm air ducts, or drafts from
hallways, fireplaces or stairways. 

MODEL:

T4800A/CT1750 — makes heating circuit on temperature
fall.

SPST (see Fig. 2) 

Range 5 to 25°C (40°F – 80°F).

Type of Switching
Patented "CoolSwitch

" triac/relay combination.

Wiring Connections: 
Six inch stranded copper leadwires suitable for 
connecting to aluminum wiring if approved special 

service CO/ALR connectors are used.

Electrical Rating:
Non-inductive (resistive) rating. 

16 A maximum @ 240 Vac 60 Hz,  2.0A minimum.
(i.e. 500 W to 3800 W).

Performance Certification
16 A @ 240 Vac.

Performance Specifications:

Precision:  ± 0.5°C (1°F) differential @ 3800W.

Accuracy*: 0.5°C (1°F) droop @ 1500W.

2°C (4°F) droop @ 3800W

Conforms to NEMA DC3 standard applied 
to low voltage thermostats. 

Setpoint Adjustment: 
Control knob on face of thermostat. 

Sensing Element: 
Electronic thermistor.

Dimensions: 
See Fig. 1 – Nominal dimensions.

LED Indicator;
Lights as heat comes on. 

Mounting Means:
Direct mounting on vertical 2 x 4 inch (50 mm x 100 mm) 
junction box, or 4 x 4 inch (100 mm x 100mm) box with 
mud ring.

Approvals:
CSA Certified LR1322. UL Listed.

*  Accuracy of the [T4800] thermostat will vary depending on 

baseboard size and length of time the thermostat remains on.

T4800A/CT1750A ELECTRIC HEATING THERMOSTAT

SPECIFICATIONS • ORDERING INFORMATION

SPECIFICATIONS

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
2. Electrical load(s)
3. Accessories.

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 or phone directory).
2.  Home and Building Control Customer Satisfaction

Honeywell Inc., 1885 Douglas Drive North.
Minneapolis, MN 55422 (612) 951-1000

3. In 

Canada — 1-800-405-9835.

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.

Fig. 1 – Nominal Dimensions in mm (inches)

120

[4-3/4]

37

[1-7/16]

34

[1-5/16]

80

[3-1/8]

83

[3-1/4]

19

[3/4]

°

C

23

[7/8]

2

95C-10690B-2  4/28/00  9:53 PM  Page 2

Summary of Contents for T4800A/CT1750A

Page 1: ...rmance Rugged molded thermoplastic mounting base with captive mounting screws Energy efficient and economical Patented electronic switch no leveling required High sensitivity solid state temperature sensing element 2 wire non polarized leadwire connections Adjustment Range 5 to 25 C 40 80 F Contemporary white styling One piece decorative cover LED status indication Suitable for non inductive rated...

Page 2: ...pplied to low voltage thermostats Setpoint Adjustment Control knob on face of thermostat Sensing Element Electronic thermistor Dimensions See Fig 1 Nominal dimensions LED Indicator Lights as heat comes on Mounting Means Direct mounting on vertical 2 x 4 inch 50 mm x 100 mm junction box or 4 x 4 inch 100 mm x 100mm box with mud ring Approvals CSA Certified LR1322 UL Listed Accuracy of the T4800 the...

Page 3: ...actory after an hour of stable operation turn the indicator upscale to raise the temperature or downscale to lower it Move the indicator only one degree Celsius two degrees Fahrenheit at a time Once set T4800 CT1750 does not need to be adjusted for comfort during the heating season REMINDER The T4800 CT1750 can improve comfort and reduce heating costs when set lower than a conventional electric he...

Page 4: ...e en thermoplastique robuste avec vis imperdables Appareil éconergétique et économique Contact électronique breveté Aucune mise de niveau nécessaire Capteur de température à semi conducteurs à très haute sensibilité Fils conducteurs non polarisés Gamme de température de 5 à 25 C 40 à 80 F Modèle de style européen blanc Boîtier profilé Couvercle en une seule pièce Indicateur d état à DEL Convient a...

Page 5: ... mm 2 x 4 po ou de 100 x 100 mm 4 x 4 po munie d un cadre pour plâtrage Homologations Certifé CSA LR1322 et homologué ULI L écart du thermostat T4800 dépend de la grosseur de la plinthe chauffante et du temps de marche du thermostat POUR COMMANDER Pour commander des produits de rechange ou de modernisation de votre distributeur autorisé en produits de gestion de l énergie fournir le numéro complet...

Page 6: ...près avoir raccordé les connecteurs sans soudure les plier et les repousser dans la boîte électrique Ensuite installer le thermostat et serrer les vis de fixation REMARQUE Lorsque des conducteurs en aluminium sont utilisés tous les raccordements au thermostat doivent être effectués avec des connecteurs approuvés sans soudure CO ALR AVERTISSEMENT Les pièces de ce thermostat ne peuvent être réparées...

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