Chromalox PN401 Electrical And Operational Checks, Installation Of Remote Control Center

ELECTRICAL AND OPERATIONAL CHECKS

A.Having circuit breaker and power switch in “off” position, make sure proper voltage supplied matches voltage of control panel and elements.

B.Adjust controlling thermostat in terminal housing to a 50°F read- ing. Increase setting until thermostat switch just “clicks”. This setting is to be used for initial heater checkout.

C.Turn circuit breaker to “on” and note green power light coming on. Turn on power switch and note first amber light will come on, and then subsequent amber light(s) as explained in Section.

D.Observe control panel as heater goes through several heating cycles. A cycle is determined when all amber lights are off. Cycle interval can vary widely depending on amount of oil in tank. However, the thermostat has been set to keep the cycle time to a minimum.

E.Turn off circuit breaker and power switch, then re-set thermostat to desired setting for normal operation. The thermostat contains a factory adjusted stop which prevents settings above 150°F.

F.If low temperature alarm feature is provided, set this control 10° to 15°F below the control thermostat setting.

G.Installation of terminal housing lid and gasket (with proper gasket sealant) completes the check-out procedure.

H.If any difficulties are encountered during the installation and check-out, call your local Chromalox Representative or Chromalox Product Service.

INSTALLATION OF REMOTE CONTROL CENTER

CAUTION: Hazard of electric shock. Any installation involving		Specifications – OCC and WCC Control Center (All Phases)
electric must be grounded to earth to eliminate shock hazard.
1.	A safe maximum temperature limit on control cabinet compo-					Catalog Number		Dimensions
	nents is 125°F. Choose a mounting location not in direct sunlight			Max.	No.	OCC	WCC		Inches		Approx.
	or exposed to any other source of excessive heat. If the panel must	Max.	Volts	Amps Per	of	Dust and Oil	Weatherproof	H	W	D	Net Wt.
	be mounted in direct sun, a sun shield must be employed.	kW		Circuit	Circuits	Tight Models	Models				Lbs.
2. Install proper control and power wiring to control center as per		6	240	15	1	OCC-15-213	WCC-15-213	24	20	8	64
	Figure J. Power lines are to be sized for the particular heater load.	8	240	25	1	OCC-25-213	WCC-25-213	24	20	8	65
	Double check to insure proper grounding procedures have been	12	240	30	1	OCC-30-213	WCC-30-213	24	20	8	65
		15	240	40	1	OCC-40-213	WCC-40-213	24	20	8	66
	followed for heaters and control panel.
		18	240	45	1	OCC-45-213	WCC-45-213	30	24	8	89
3. Available inside control panel are connections A and A1 which
		21	240	55	1	OCC-55-213	WCC-55-213	30	24	8	91
	provide for an over-temperature alarm; such as, horn, bell, etc., to	24	240	60	1	OCC-60-213	WCC-60-213	30	24	8	91
	be mounted remotely as required. These terminals are rated at	27	240	70	1	OCC-70-213	WCC-70-213	30	24	8	96
	50VA, 120V.	30	240	75	1	OCC-75-213	WCC-70-213	30	24	8	96
4.	Electrical	12	240	15	2	OCC-15-223	WCC-15-223	30	24	8	84
	A. CAUTION: Hazard of severe shock. Make sure circuit	16	240	25	2	OCC-25-223	WCC-25-223	30	24	8	86
	breaker and panel switch are in “off” position.	24	240	30	2	OCC-30-223	WCC-30-223	30	24	8	86
		30	240	40	2	OCC-40-223	WCC-40-223	30	24	8	91
	B. Make knockouts in control cabinet which are desired for final
		36	240	45	2	OCC-45-223	WCC-45-223	42	30	8	126
	wiring installation.	42	240	55	2	OCC-55-223	WCC-55-223	42	30	8	128
	C. Connect leads from riser(s) to identified terminals shown on	48	240	60	2	OCC-60-223	WCC-60-223	42	30	8	128
	Figure J.	54	240	70	2	OCC-70-223	WCC-70-223	42	30	8	135
		60	240	75	2	OCC-75-223	WCC-75-223	42	30	8	135
	D. TEMPORARY WIRING TO SIMULATE ACTIVATION OF
		18	240	15	3	OCC15-233	WCC-15-233	36	30	8	113
	CONTROL CIRCUIT.
		30	240	25	3	OCC-25-233	WCC-25-233	36	30	8	120
	1. Jumper terminals S to S1.
		36	240	30	3	OCC-30-233	WCC-30-233	36	30	8	125
	2. Connect overtemperature control leads to terminals 5, 6, 7	45	240	40	3	OCC-40-233	WCC-40-233	36	30	8	127
	or 8 as shown on Figure J.	6	480	10	1	OCC-10-413	WCC-10-413	24	20	8	64
	3. Connect green ground wire lead from riser(s) to grounding	8	480	15	1	OCC-15-413	WCC-15-413	24	20	8	64
	lug in control box and from control box to a suitable	15	480	20	1	OCC-20-413	WCC-20-413	24	20	8	64
	ground.	18	480	25	1	OCC-25-413	WCC-25-413	24	20	8	64
		21	480	30	1	OCC-30-413	WCC-30-413	24	20	8	64
	4. Connect power cable of proper voltage to input of control
		27	480	35	1	OCC-35-413	WCC-30-413	24	20	8	64
	box.	30	480	40	1	OCC-40-413	WCC-30-413	24	20	8	64
	5. Secure control box door, then place circuit breaker in “on”	12	480	10	2	OCC-10-423	WCC-10-423	30	24	8	84
	position and energize heater with panel switch. Start with	20	480	15	2	OCC-15-423	WCC-15-423	30	24	8	84
	45 second time interval and increase until a definite rise in	30	480	20	2	OCC-20-423	WCC-20-423	30	24	8	84
	temperature on each heater tube can be felt with the bare	36	480	25	2	OCC-25-423	WCC-25-423	30	24	8	89
		42	480	30	2	OCC-30-423	WCC-30-423	30	24	8	91
	hand. NOTE: Adjustable time delay(s) in multi-stage units
		54	480	35	2	OCC-35-423	WCC-35-423	30	24	8	91
	have been preset at factory to provide steps for energizing	60	480	40	2	OCC-40-423	WCC-40-423	30	24	8	96
	individual circuits.	18	480	10	3	OCC-10-433	WCC-10-433	36	30	8	113
	6. Observe green light (which indicates “power”) when clos-	36	480	15	3	OCC-15-433	WCC-15-433	36	30	8	113
	ing circuit breaker, first amber light with panel switch "on"	45	480	20	3	OCC-20-433	WCC-20-433	36	30	8	113
	and subsequent amber light(s) (if any) at approximately 15
	second intervals.

7. Have qualified electrician, using an amprobe, check amper- age in individual heater leads to insure uniform amperage.

8. Turn circuit breaker to “off” position and remove tempo- rary jumper from terminals Sand S1

6