TYPICAL WIRING DIAGRAMS

Diagram 14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Typical Export Boiler

 

 

 

 

 

 

 

 

 

346V 3Ø 50 HZ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L1

L2 L3

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 HTR

1L1

C1

 

 

 

GND

C3

3L1

3 HTR

 

 

 

 

 

 

 

 

 

 

2

FU1

 

FU7

 

 

 

 

 

 

 

 

 

 

 

 

1L2

 

FU2

 

FU8

 

 

3L2

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1L3

 

FU3

 

FU9

 

 

3L3

 

 

 

 

 

 

 

 

 

 

 

 

2 HTR

2L1

C2

FU4

 

FU10

 

C4

4L1

4 HTR

 

 

 

 

 

 

 

 

 

 

 

 

2L2

 

FU5

 

FU11

 

 

4L2

 

 

 

 

 

 

 

 

 

 

 

 

 

2L3

 

FU6

 

FU12

 

 

4L3

 

 

Feed Water

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Electrical

 

 

 

 

1PB

 

 

 

 

 

 

 

 

 

 

 

 

 

Connection

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2 2TB

1TB

FU13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

1CR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1

C2

C3

C4

2

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FU

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FU

FU

FU

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 2 3

4 5 6

7 8 9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

220 VAC Single Phase Control Circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

4

 

 

GND

1

 

 

 

 

 

 

 

 

 

2

 

 

 

 

HTR

 

HTR

 

 

 

B

 

 

 

 

 

 

 

 

 

W

 

 

 

 

 

 

 

 

 

 

FU13

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1LT

 

 

 

 

 

1

 

2

 

 

 

B 1PB On

 

 

 

BR

 

 

 

Boiler

 

 

 

 

HTR

 

HTR

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

 

 

Off

IFS

 

 

 

 

 

 

1

On

 

 

 

 

 

 

 

 

 

 

 

 

 

Y

 

 

 

9.9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2PS

 

 

 

Cabinet Exterior Left Side

 

Panel Layout

Cabinet Exterior Right Side

 

 

 

 

O

1PS

O

 

 

 

C1

Heater Contactor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C2

Heater Contactor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C3

Heater Contactor

 

 

 

 

 

 

 

Wire Color Code

 

 

 

 

 

 

 

 

C4

Heater Contactor

 

 

 

 

 

 

 

B

=

Black

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BR

=

Brown

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R

=

Red

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O

=

Orange

 

1CR-1

 

 

Customer Pump

 

1CR-2

 

 

 

 

 

 

 

 

Y

=

Yellow

 

 

B

 

W

 

 

 

 

 

 

 

 

 

 

 

 

Connection

 

 

 

 

 

 

 

 

 

 

G

=

Green

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BL

=

Blue

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

W

=

White

 

 

 

 

 

 

 

 

 

 

 

PRE-OPERATION CHECK

After proper wiring and piping of boiler system is complete, testing of controls can start. Before testing controls, it is recommended that all contactor fusing be removed. This is to prevent possible element failure under test conditions.

A. OPERATING AND TESTING THE McDONNELL &

MILLER LOW WATER CUTOFF CONTROL.

WARNING: Be sure all electrical connections are tight before energizing boiler. Reset all manual reset con- trols by pushing reset buttons on: (1) high limit control located on top of boiler and (2) McDonnell & Miller located on the side of boiler.

1. Be sure all valves from incoming water supply are fully open.

Turn boiler switch to “ON” position, pump or solenoid

valve will energize, allowing boiler to fill with water. Proper

water level is automatically reached with level control sup-

plied. Pump or solenoid feed will shut off at proper water level.

Contactor(s) will energize, supplying power voltage to ele-

ments.

2. Checking operation of pump switch. (Figure 1) With water

level visible in sight glass, partially open drain valve at bottom

of boiler. If automatic blowdown supplied, push manual blow-

down switch until valve open light is on, hold for few seconds.

Water level will fall, allowing float to trip pump switch to

“ON” position. Close drain valve or release manual blowdown

switch.

Pump motor or solenoid valve will energize and water level

will resume to normal level in sight glass.

3. Checking low water cutout switch operation, open drain

valve completely. If automatic blowdown supplied, push in

and hold manual blowdown switch until water level falls

enough to trip cutout switch. Close drain valve or release man-

Pump

Low-Water

Cut-Off

Terminals

Alarm

Circuit

Terminals

Pump

Circuit

Terminals

Line

Cut-off

and

Alarm

Switch

C

A

Pump

Switch

Adjusting

Screws

D

B

ual blowdown switch. If low water cutout is automatic reset,

pump or solenoid will return water level to normal. If low

water cutout is manual reset, then manual reset button on

McDonnell & Miller low water cutoff control must be pushed

to complete circuit. Turn off boiler. Reinstall contactor

fuses.

Figure 1 — Automatic Reset Low-Water Cutoff Junction Box

11

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Image 11
Chromalox CES-6 manual PRE-OPERATION Check, Miller LOW Water Cutoff Control
Page 10 Page 12

CES-6 specifications

The Chromalox CES-6 is a state-of-the-art electric heating solution designed for industrial and commercial applications. This versatile unit offers a range of features that enhance its efficiency, durability, and ease of use. With a focus on advanced technology, the CES-6 is engineered to meet the demands of various heating requirements, from process heating to temperature maintenance.

One of the standout features of the CES-6 is its robust construction. Built to withstand harsh environments, it is made from high-quality materials that ensure longevity and reliability. The unit's enclosure is resistant to moisture and dust, making it ideal for applications in challenging conditions. This durability ensures that the CES-6 can operate effectively in settings such as manufacturing plants, warehouses, and outdoor installations.

The CES-6 leverages cutting-edge heating technologies, including advanced thermal management systems. This feature allows for precise temperature control, ensuring optimal performance and energy efficiency. By utilizing programmable temperature settings, users can customize their heating profiles to match specific operational needs, reducing energy consumption and operating costs.

Another significant characteristic of the CES-6 is its ease of installation and maintenance. Designed with user convenience in mind, the unit comes equipped with adaptable mounting options and user-friendly interfaces. This makes it straightforward for technicians to install and service, minimizing downtime and enhancing productivity.

Safety is a top priority with the CES-6, which incorporates multiple safety features to protect users and equipment. Over-temperature protection, built-in alarm systems, and fail-safe mechanisms are just a few of the safeguards included. These features not only enhance user safety but also contribute to the overall integrity of the heating process.

In conclusion, the Chromalox CES-6 stands out in the market for its combination of durability, advanced technology, and user-friendly design. Its robust construction makes it suitable for demanding industrial settings, while its energy-efficient heating capabilities and ease of installation ensure it meets the needs of a wide range of applications. Whether you are looking for reliable heating for your manufacturing processes or need a dependable solution for temperature maintenance, the CES-6 is an exceptional choice that delivers performance and efficiency.
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