Chromalox CES-6 manual Typical Wiring Diagrams, Boiler 208 240 480

WIRING

WARNING: Hazard of Electric Shock. Boiler must be suitably grounded according to N.E.C. standard.

1.Be sure to use the proper wire. Electric wiring to boiler should be in accordance with National Electrical Code or local wiring code following wiring diagram supplied. (See recommendations on safety switches and fusing.)

2.The unit is completely wired and pre-tested before shipment. No internal wiring is required.

If a separate control circuit is used, the control circuit should be connected to the control terminal block, inside access door (not required with transformer).

3.Safety Switches — WARNING: Purchaser should use a safety switch employing circuit breakers or fuses between his main power source and the boiler.

4.Because of their water lines, boilers are susceptible to lightning damage. Industrial type lightning protectors should be installed per manufacturer’s recommendations at your service entrance. Check

your contractor or electrical dealer for recommended type for your system.

5.Be sure all electrical connections are sufficiently tightened.

6.WARNING: Substitution of components or modifica- tion of wiring system voids the warranty and may lead to dangerous operating conditions.

7.SPECIAL INSTRUCTIONS FOR CUSTOMERS SUPPLY- ING THEIR OWN CONDENSATE OR PUMP SYSTEMS.

A.Check the voltage of the motor before making the wiring con- nection. Some Chromalox boilers are supplied with dual volt- age systems. The motor should always match the voltage of the control circuit.

B.The motor circuit should be wired into the pump control as shown in wiring diagram (float type pump control). If boiler is equipped with solid state pump control, refer to wiring diagram and use terminals 5 and 2.

TYPICAL WIRING DIAGRAMS

Use Applicable wiring diagrams based on model number and power voltage.

		3 Phase Voltage					3 Phase Voltage					3 Phase Voltage
Boiler	208		240	480	Boiler	208		240	480	Boiler	208		240	480
CES-6	1		1	1	CES-30	2		2	3	CES-100	8		8	9
CES-9	1		1	1	CES-36	2		2	3	CES-135			10	11
CES-12	1		1	1	CES-48	4		4	5	CES-160			12	13
CES-18	1		1	1	CES-60	6		6	7	CES-180			10	11
CES-24	2		2	3	CES-72	6		6	7	Export	14

Diagram 1

Feed Water

Electrical

Connection

		1TB
	2			FU
	1
3			1	2	3
GND
		1			2

FU6

1PB

1 HTR	C1
	1L1
1	1L2

GND

1L3

31

GND

1

B

L1 L2 L3

1

GND

FU1

FU2

FU3

FU4 FU5

H1 H2

Optional Transformer

X1 X3 X2 X4

2

2

W

Cabinet Exterior Left Side

GND GND

1

HTR

Panel Layout

Cabinet Exterior Right Side

FU6						1LT
B 1PB On				BR
						R	Boiler On
Off	IFS
				Y			Feed Water
	O	1PS	O	2PS	O	C1	Heater
							Contactors
						C2
						C3
						C4

Wire Color Code

B= Black BR = Brown R = Red

O	=	Orange	* Boilers under 40 Amps total (not fused)
Y	=	Yellow

G= Green

BL = Blue W = White

4