Honeywell T7460C, T7460A, T7460D, T7460B, T7460F User Manual

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HONEYWELL EXCEL 5000 OPEN SYSTEM

FEATURES

• Mountable on 2.36 in. (60 mm) wall outlet box or

• Models with setpoint adjustment.

• Models with bypass (override) button and LED.

• Models with 3-position (auto/0/1) or 5-position

• Setpoint dials with Celsius relative or Celsius absolute

T7460A,B,C,D,E,F

WALL MODULES

SPECIFICATION DATA

directly on a wall.

(auto/0/1/2/3 speed) fan switch.

scale.

GENERAL

The T7460A,B,C,D,E,F are a family of direct-wired wall modules for use with Honeywell Excel 10 W7750, W7751, W7752, W7753, W7761, W7762, W7763, and Excel 600, 500, 100, 50, 20 Controllers. All models have a space temperature sensor; some models have setpoint adjustment, bypass button and LED, and fan switch.

• Locking cover on all models.

• Operating range 43…104°F (6…40°C).

• CE-approved.

• IP 30 housing.

DESCRIPTION

The T7460A,B,C,D,E,F packages include two setpoint dials. By default, the “Celsius Relative” type (-5 … +5) is mounted, but can be easily replaced with the “Celsius Absolute” type (12…30°C).

T7460A,B,C,D,E,F WALL MODULES

resis

ohms

SPECIFICATIONS

Table 1. T7460 Wall Module models

type no. setpoint adjustment

bypass

T7460A -- -- --

T7460B -- --

T7460C 3 --

12…30 °C (absolute)

T7460D -- 5

T7460E 3 3

T7460F

NOTE: Not all of the T7460 Wall Modules are compatible with W7751A,C,E,G (VAV1) and W7752D1 (FCU1) controllers.

NOTE: Refer to T7460A,B,C,D,E,F Installation Instructions (product literature no.: EN1B-0291GE51) for wall module settings

and wiring diagrams.

Construction:

Two-piece construction: cover and internally wired subbase. Field wiring 16 to 22 AWG (1.5 to 0.34 mm terminal block on the PCB.

Temperature Sensor Operating Range:

43…104°F (6…40°C).

T7460A,B,C,D,E,F 20kΩ Sensor:

All T7460 models are furnished with a 20kΩ NTC temperature sensor following a specific temperature-resistance curve. See Fig. 1. Honeywell controllers used with the T7460 employ an algorithm that provides readings close to the actual temperature. Table 2 summarizes the T7460 sensor accuracy for normal operating temperatures. Throughout the range of 43…104°F (6…40°C), the accuracy is better than ±0.75°F (±0.42°C).

Table 2. Temperature sensor accuracy

ambient temp.

°F (°C)

60 (15.5) ±0.52 (±0.29) 31543

65 (18.3) ±0.49 (±0.27) 27511

70 (21.1) ±0.48 (±0.27) 24047

80 (26.7) ±0.49 (±0.27) 18490

85 (29.5) ±0.52 (±0.29) 16264

± 5 K (relative)

max. error

°F (°C)

LED

(override)

button and

3 5

) connects to a

nom. resistance

(Ω)

3- or 5-

position

fan switch

W7750A,B, W7751B,D,F,H, W7752D,E,F,G, W7753A, W7761A, W7762A,B, W7763C,D,E, and Excel 600, 500, 100, 50, 20

W7750A,B, W7751B,D,F,H, W7752D,E,F,G, W7753A, W7762B, W7763E, and Excel 600, 500, 100, 50, 20

W7750A,B, W7751B,D,F,H, W7752D,E,F,G, W7753A, W7762A,B, W7763D,E, and Excel 600, 500, 100, 50, 20

W7752D,E,F,G, W7753A, and Excel 600, 500, 100, 50, 20

W7750A,B, W7752D,E,F,G, W7753A, and Excel 600, 500, 100, 50, 20

W7752D,E,F,G, W7753A, and Excel 600, 500, 100, 50, 20

80 K

70 K

)

60 K

50 K

ance (

40 K

30 K

ical

20 K

elec

10 K

0 10 20 30 40

Fig. 1. Temperature vs. resistance for 20kΩ sensor

T7460B,C,D,E,F Setpoint Adjustment:

In the case of wall modules equipped with setpoint adjustment, depending on the type of setpoint dial in use, the controller must be set for either the relative or the absolute scale. The relation between setpoint and resistance is given in Table

3. Accuracy of resistance is:

• ±5% in middle position, e.g. 5225 Ω to 5775 Ω;

• ±10% in end position, e.g. 9450 Ω to 11550 Ω.

compatible with

40 50 60 70 80 90 100 110

temperature (degrees)

° °C

74-3083-2 2

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