Chromalox GSL3 installation instructions Installation, Wiring, Flexible Conduit Fittings

INSTALLATION

ELECTRIC SHOCK HAZARD. Disconnect all power before installing or servicing heater. Failure to do so could result in personal injury or property dam- age. Heater must be installed by a qualified per- son in accordance with the National Electrical Code, NFPA 70.

1.Before installing the type GS or GT heater, inspect it for possible damage which may have occurred during shipment. Also, check to insure that the line voltage is the same as that stamped on the nameplate.

2.IMPORTANT: Mount heater in the tank so the liquid level will always be above the effective heated portion of the heater. Provide expansion tank if necessary.

FIRE HAZARD. If the heater is not properly sub- merged, the heating elements will overheat and could result in a fire or damaged equipment..

3.Where work will pass over or near equipment, additional protec- tion, such as a guard, may be needed.

4.In an electroplating operation the heaters are not, under any cir- cumstance, to be placed between the electrodes and the work.

5.When melting solids by direct immersion, a surface vent should be provided to allow gases to escape. Operate the heater on half voltage until melted material completely covers the heater area.

6.A drip loop is recommended to minimize passage of moisture along wiring into terminal box and connections.

FIRE HAZARD. Since heaters are capable of devel- oping high temperatures, extreme care should be taken to: Since these heaters are capable of developing high temperatures, extreme care should be taken to:

A.Avoid contact between heater and combustible material.

B.Keep combustible materials far enough away to be free of the effects of high temperatures.

WIRING

ELECTRIC SHOCK HAZARD. Any installation involving electric heaters must be performed by a qualified person and must be effectively grounded in accordance with the National Electrical Code to eliminate shock hazard.

1.Electrical wiring to heater must be installed in accordance with the National Electrical Code and local electrical codes by a quali- fied person.

2.When element wattages are not equal, heaters must not be con- nected in series.

Representative wiring diagrams for heaters with Single use fuse (F) or Resetable fuse (RF) —

Single phase heater circuit using a SPST thermostat. Line Voltage and/or current do not exceed thermostat or thermal fuse rating

(Figure 3).
Ground			Green
L2			Black
L1	*	*	Black
Fused	Thermal Fuse
	Thermostat
Disconnect
(Customer Supplied)
	Figure 3		Heater

One Single phase heater or (3) single phase heaters equal in size and each having a thermal fuse wired as a 3 phase heater circuit using a DPST thermostat. Line voltage and current do not exceed thermostat or thermal fuse(s) rating (Figure 4). Dotted line and L3 indicate 3 phase connections.

Ground		Green
L3		*	*
L2		*	*	Black
L1		*	*
Fused	Thermostat	Thermal Fuses
Disconnect
(Customer Supplied)
			Black	Black
		Figure 4		Heater

Single phase or 3 phase heater circuit. Line voltage and/or current exceeds thermostat or thermal fuses ratings (Figure 5). Dotted line and L3 indicate 3 phase connections.

Ground	Green
		Black
L3
L2		Black
L1
Fused Disconnect		Black
L2		Heater
	*
L1		*
Thermostat		Magnetic
(Customer Supplied)		Contactor
		Thermal Fuses
		Figure 5

Flexible Conduit Fittings —

Washer		Ferrule	Nut	Conduit
		Insert
			Sealing
Locknut	Body		Insert

1.Cut conduit. Slide nut and sealing insert onto the conduit.

2.Screw the ferrule insert into one end of the flexible conduit.

3.Seat the ferrule insert inside of the body, seat the sealing insert and hand tighten the cap onto the body.

4.Repeat steps 1 thru 3 above for the other end of the conduit, after pulling the wires.

5.If the fitting is used in a threaded hole, first thread the body into the hole then follow steps 1 thru 3.

6.If the fitting is used thru an opening* use the locknut and plastic washer to fasten it.

*Opening for 1/2” NPT thread is 7/8”.