Honeywell T7470A1009 User Manual

® U.S. Registered Trademark EN0B-0469GE51 R0816
Copyright © 2016 Honeywell Inc. • All rights reserved
T7470A1009
Space-Temperature Sensor
PRODUCT DATA AND INSTALLATION INSTRUCTIONS
GENERAL
The T7470A1009 is equipped with a 20 kΩ NTC space-
temperature sensor and can be directly wired to Honeywell
controllers having an NTC 20 kΩ input.
Please refer to the technical specifications of the individual
controllers in order to determine their suitability for use in
conjunction with a given sensor application.
FEATURES
 Mountable directly on a wall.
 Operating range 43 to 104°F / 6 to 40°C.
 EAC- and CE-approved.
 IP 30 housing.
 Compact.
SENSOR CHARACTERISTIC
The 20 kΩ NTC temperature sensor follows a specific
temperature-resistance curve (see Fig. 1).
80 K
70 K
60 K
50 K
40 K
30 K
20 K
10 K
30
0 10 20 30 40
40 50 60 70 80 90 100 110
°
F
°C
temperature (degrees)
elec
t
r
i
cal
r
es
i
s
t
ance (
o
hms)
Fig. 1. Temperature vs. resistance for 20 kΩ sensor

Honeywell T7470A1009 Specifications

General

Application	Heating, Cooling
Power Supply	24 VAC
Control Method	On/Off
Mounting Type	Wall Mount
Voltage	24 VAC
Output Types	Relay
Enclosure Rating	NEMA 1
Operating Temperature Range	32 F to 122 F
Switching Action	SPDT
Terminal Designations	R, W, Y, G
Input Types	Thermistor
Display	LCD
Setpoint Resolution	1°F
Weight	0.5 lbs

Summary

General Product Information

Sensor Type and Wiring

The T7470A1009 uses a 20 kΩ NTC sensor, directly wired to Honeywell controllers.

Sensor Characteristic Curve

Temperature vs. Resistance

Details the specific temperature-resistance curve for the 20 kΩ NTC sensor.

Product Specifications

Dimensions and Construction

Details physical dimensions, construction type, and wiring gauge for the sensor.

Operating and Shipping Conditions

Specifies operating temperature range, shipping temperature, and humidity limits.

Accuracy and Safety Standards

Outlines sensor accuracy, terminal box safety, and IP protection standard.

Installation Instructions

Before Mounting

Guidance on wiring compliance and general installation prerequisites.

Mounting Guidelines

Instructions on selecting mounting location, clearance, and avoiding interference.

Removing the Cover

Procedure for safely removing the sensor cover for wiring access.

Wire Insertion

Steps for inserting wires into the terminal block and wire length recommendations.