Honeywell C7400S Benutzerhandbuch

62-0332—03

2

Review the “Specifications” on page 1 before installing the 

sensor.

1. Read these instructions carefully. Failure to follow them 

could damage the product or cause a hazardous 

condition.

2. Check ratings given in instructions and on the product to 

ensure the product is suitable for your application.

3. Installer must be a trained, experienced service 

technician.

The following installation procedures should be performed in 

the order listed:

1. Mounting — see “Mounting” on this page.
2. Wiring — see “Wiring” on page 3.
3. Checkout — see “Checkout” on page 3.

The sensor is mounted directly to the sheet metal using self 

tapping sheet metal screws or in the air stream using the duct 

mounting kit. Use #6 or #8 screws (screws are not provided 

and must be obtained separately). Use the dimensions in 

Fig. 1 on page 1 as a guide.

The sensor must be mounted to allow air flow through the 

sensor housing vent slots on the end or side.

The Sylk Bus sensor communicates with a controller (such as 

the JADE™ Economizer Model W7220) on the two-wire 

communication bus and can either be wired using a two pin 

header or using a side connector. The unit pack Sylk Bus 

sensor includes a two pin Euro connector with the packaging. 

The SKU number of the Sylk Bus sensor is C7400S. All OAT 

(Outdoor Air Temperature), RAT (Return Air Temperature) and 

DAT (Discharge Air Temperature) sensors are the same SKU 

number. The sensor is set for the appropriate type of sensing 

using the three position DIP switch located on the sensor. 

OAT position is OFF, OFF, OFF; RAT is ON, OFF, OFF and 

DAT is OFF, ON, OFF. During installation the sensors are set 

for the the appropriate usage. See “Sylk Bus Sensor Wiring” 

on page 3 for DIP switch details.

Once installed, a sensor can be changed to a different 

application by simply changing the DIP switch setting. 

The sensor can be mounted directly on to the sheet metal of 

the unit or can be mounted in the air stream using the duct 

mounting kit. 

The duct mounting kit contains a rod to hold the sensor in the 

duct, a flange to secure the sensor rod to the duct wall and to 

fill the hole, and a gasket to prevent air from leaking through 

the duct wall. See Fig. 2.

The rod has slots for threading the wire to prevent loose or 

hanging wire in the duct and can be adjusted for 6 or 12 inch 

length. The flange has extended relief for ease of mounting. 

See Fig. 3.

ROD - 1 PIECE

FLANGE - 1 PIECE

GASKET - 1 PIECE

M32281

WIRE HOLDER

EXTENDED RELIEF

(FOR CORRECT MOUNTING)

M32282

LENGTH ADJUSTS

TO 6 OR 12 INCHES