Chromalox GNIT-5 installation instructions PK479-3, General, Mounting, Date August, Chromalox

Chromalox®

Installation Instructions

SERVICE REFERENCE

DIVISION 4		SECTION GNIT
SALES	(Supersedes PK479-2)		PK479-3
REFERENCE

161-506172-001

DATE AUGUST, 2006

GNIT Moisture and Corrosion Resistant Industrial Thermostat

Features:

•Rugged Design

•Moisture and Corrosion Resistant

•Teflon® Covered Capillary/Bulb

•Large Setpoint Dial

•Easy Installation

•Line Voltage

•DPST 25 Amp Switch

Teflon® is a registered trademark of DuPont Co.

Specifications —

Model	PCN	Temperature	Volts	Max	Capillary	Stock
		Range (˚F)		Amps.	Length (Ft.)
GNIT-5	360946	30 to 220	120/240	25	5	S
GNIT-12	360954	30 to 220	120/240	25	12	S

Other temperature ranges available. Contact your local Chromalox Sales office.

GENERAL

FIRE/EXPLOSION HAZARD. This thermostat is not intended for use in hazardous atmospheres where flammable vapors, gases, liquids or other com- bustible atmospheres are present as defined in the National Electrical Code. Failure to comply can result in personal injury or property damage.

NOTICE: Type GNIT Thermostats are designed for temperature control service only. Because they are not fail safe, they should not be used for temperature limiting duty.

The system designer is responsible for the safety of this equipment and should install adequate back-up controls and safety devices with their electric heating equipment. Where the conse- quences of failure could result in personal injury or property damage, back-up controls are essential.

The GNIT Non-Indicating Corrosive Resistant Thermostat is designed for applications in atmospheres where corrosive material is present. The double pole/single throw thermostat is available with either a 5 foot or 12 foot copper capillary which is sleeved with

Teflon®. The Teflon® also covers the bulb. The thermostat is designed for 25 amperes resistive loads for either 120 or 240 Vac.

Specifications:
Range	30 to 220˚F
Switch Action	DPST (Double Pole/Single Throw)
Current	25 Amperes, 120 or 240 Vac
Accuracy	±9˚F
Load Lamp	120 Vac or 240 Vac
Capillary Length	GNIT-5, 5 Foot
Diameter of Teflon® Cover	GNIT-12, 12 Foot
	5/16” OD

Application Notes

1.Customer external fuse required.

Process Temperature Differential — is variation in controlled process temperature between maximum, when thermostat turns OFF and minimum, when thermostat turns ON. This spread in temperature may be minimized by:

1.Making sure control is mounted to vertical surface. (See Step 1, MOUNTING.)

2.Avoid excess heating capacity (oversized heaters).

3.Locating control sensing bulb in optimum position between heat source and work.

MOUNTING

Note: Do not mount thermostat where it will be subject to vibra- tion or shock. Do not mount adjacent to a large magnetic contac- tor, as vibration and shock will cause thermostat to interact errati- cally — resulting in chattering of the contactor.

The air temperature in and around the thermostat enclosure should be kept as near to normal room temperature as possible…

never above 150˚F or below 30˚F.

1.Thermostat must be mounted in a vertical position only.

2.Use sheet metal or wood screws through the four 1/4” diame- ter mounting holes in baseplate to mount control.

© 2010 Chromalox, Inc.