Johnson Controls T46 Series Data Sheet

T46 Thermostat

Multi-Stage Electromechanical Temperature Controls

Code No. LIT-1922270

T46 Series Fan Coil Thermostat

Description

The T46 Series Thermostat is used to control line voltage, fan coil, and heating zone valves on heating, cooling, and combination heating and cooling systems. Models are available with single-pole, single-throw (SPST) or single-pole, double-throw (SPDT) contact action for standard duty (nominal 1/4 hp, 6 A non-inductive) applications. Thermostats are available with or without fan speed control or built-in thermometers. Various system switch combinations are available, including fan speed selection.

Field-installable faceplate combinations of knob or concealed adjustment are possible. Also, the T46 is available with or without thermometer indication. These thermostats have plastic locking covers with an Allen-head screw to discourage unauthorized tampering. Standard models are supplied with the thermostat faceplate installed with knob adjustment and thermometer.

Refer to the T46 Series Fan Coil Thermostats Product Bulletin (LIT-125655) for important product application information.

Selection Charts

T46 Series Fan Coil Thermostat

Product Code Number

System Switch

Fan Switch

Heating

T46ABH-1C Auto-off-fan None T46ADH-1C Off-auto None

Cooling

T46JBH-1C Auto-off-fan None T46JDH-1C Off-auto None T46JEA-1C On-off Low-med-high

Heating and Cooling

T46SAA-1C Heat-off-cool Low-med-high T46SAH-1C Heat-off-cool None T46SDA-1C Off-auto Low-med-high T46SDH-1C Off-auto None

Technical Specifications

Range Thermostat 40 to 90°F (5 to 30°C)

Thermometer 50 to 90°F (10 to 30°C)

Differential Mechanical Approximately 0.7°F (0.4°C)

Operating See next page

Finish Cover Almond

Faceplate Gold metallic with dark brown border and lettering Mounting Double gang box, separable mounting plate Material Base 0.050 in. (1 mm) cold rolled steel

Cover 0.090 in. (2 mm) high-impact plastic Sensing Element Liquid-filled for positive trouble-free operation Shipping Weight Individual Pack 1 lb (0.45 kg)

Overpack of 20 Units 20 lb (9.07 kg) Thermometer Bimetal type for accuracy and clarity, can be field-calibrated Wiring Connections Color coded No. 16 AWG wires, 8 in. (203 mm) long

The performance specifications are nomina l and con form to accep table ind ustry stand ards. For applicati ons at con ditions be yond these specification s, consult th Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.

Features

• knob or concealed setpoint adjustment

• low and high temperature dial stops that are concealed and adjustable throughout setpoint range

• can be set for a locked dial

• narrow differential without the need for anticipator

• standard internal dual Celsius and Fahrenheit scales

• switch mechanism and wiring connections go into the switch box to isolate electrical circuits from the sensing element

• mounts on a standard double outlet box

• separable mounting plate allows easy mounting and wiring without removing thermostat cover

• locking cover reduces unauthorized tampering

• high-impact plastic enclosure

• smooth action multi-position slide switches

Applications

These thermostats control fan coil and zone heating valves on a wide variety of heating and cooling combinations for conditioned space.

for dependable service

Replacement Parts

Product Code Number Description

CVR88A-600R Thermostat Cover Assembly for knob adjustment models with thermometer,

KNB26A-600R Plastic push on knob for thermostat BKT48A-600R Mounting plate for T46

°F scale, faceplate supplied unassembled

Accessories

Product Code Number

Faceplate Selection

Mounting Position

PLT333-1R PLT333-3R Vertical Concealed Yes Fahrenheit PLT333-5R Vertical Knob Yes Celsius PLT333-12R Vertical Concealed No –

1. Faceplates must be ordered in multiples of ten.

2. Supplied with standard wholesaler models.

Vertical Knob Yes Fahrenheit

T46 Series Fan Coil Thermostats

Typ e o f Adjustment

Thermometer Cutout

Temperature Scale

R-72

02468

2.2

1.1

Operating Differential F

Operating Differential C

Amperage Load

T46A, T46S Heating

Operating Differential for T46A and Heating Side of T46S

t46heat.eps

02468

2.2

1.1

Operating Differential F

Operating Differential C

Amperage Load

T46J, T46S Cooling

Operating Differential for T46J and Cooling Side of T46S

t46cool.eps

Grey

Black

L1 (Hot)

Neutral

Orange

Red

To Fan

To Heating

T46ABH Auto-Off-Fan Selector Switch

with Continuous Fan (Heating Only)

t46auht.eps

Grey

Black

Neutral

Orange

Blue

To Fan

To Cooling

T46JBH Auto-Off-Fan Selector Switch

with Continuous Fan (Cooling Only)

t46auco.eps

Black

L1 (Hot)

Neutral

Orange

To Fan

Changeover

Control

Grey

Valve

Red

Blue

Fan

Off

T46SDH Off-Auto Selector Switch.

Used on Fan-Coil Unit with Cycling Valve and Continuous Fan.

Terminal Markings Shown for

A19CAC Changeover Control (Heating and Cooling)

t46_2.eps

Multi-Stage Electromechanical Temperature Controls

T46 Series Fan Coil Thermostat (Continued)

Technical Specifications (Continued)

Electrical Ratings

Motor Ratings 120 V 208 V 240 V 277 V

T46 System and Fan Switches

AC Full Load A 12.0 6.9 6.0 5.2 AC Locked Rotor A 34.8 19.1 17.4 14.4 AC Non-Inductive A 6.5 6.5 6.5 – Pilot Duty 125 VA, 24 to 277 VAC

T46 Thermostat Only

AC Full Load A 6.0 3.5 3.0 – AC Locked Rotor A 34.8 19.1 17.4 – AC Non-Inductive A 6.5 6.5 6.5 – Pilot Duty 125 VA, 24 to 277 VAC

Operating Differentials

Typical Wiring Application for Heating

Typical Wiring Application for Cooling

Note: The heavy line in each of the above figures is the nominal operating temperature differential. Production thermostats may vary from the norm, as indicated by the dotted line.

The performance specifications are no minal and co nform t o acceptab le ind ustry standar ds. For appl ications at condition s beyond these specifica tions, consult th Johnson Controls, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. © 2015 Johnson Controls, Inc.

Typical Wiring Application for Combination

R-73