TYPICAL WIRING DIAGRAMS

 

Diagram 14

 

 

 

 

 

 

 

 

346V 3Ø 50 HZ

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L1 L2 L3

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 HTR

1L1

C1

FU1

 

FU7

 

C3

3L1

3 HTR

 

 

 

 

 

 

 

 

 

 

 

 

2

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

 

 

 

 

 

 

 

5L1

 

FU13 CR

10L

 

IT1

Feed Water

 

Electrical

 

 

 

 

1PB

 

 

 

 

 

 

 

 

Connection

 

 

 

 

GND

 

 

 

 

 

 

5L2

 

FU14

20L

 

IT2

1

Motor

 

 

 

 

2 2TB

1TB

FU16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5L3

 

FU15

30L

 

IT3

Mtr

 

 

 

 

 

1

 

1CR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C1

C2

C3

C4

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Customer

 

 

 

FU

GND

1

 

 

 

 

 

 

 

 

 

 

 

 

 

Connect

 

FU

FU

FU

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 2 3

4 5 6

7 8 9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

220 VAC Single Phase Control Circuit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

4

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

HTR

 

HTR

 

 

B

 

 

 

 

 

 

 

 

 

W

 

 

 

 

 

 

 

 

 

 

 

FU16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

 

Connection

W

 

 

 

 

 

 

 

 

 

 

 

 

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 CHPES-6A manual PRE-OPERATION Check, Miller LOW Water Cutoff Control

CHPES-6A specifications

The Chromalox CHPES-6A is a advanced electric heating solution designed to meet the demands of various industrial applications. This equipment boasts exceptional performance, reliability, and efficiency, setting a high standard in the electric heating market.

One of the primary features of the CHPES-6A is its robust construction. Built to withstand challenging environments, it is made from high-quality materials that enhance durability while ensuring effective heat transfer. The unit is engineered to resist corrosion and damage, making it ideal for use in harsh conditions and industries.

The CHPES-6A leverages cutting-edge heating technologies that optimize energy consumption. It incorporates advanced digital controls that provide precise temperature management, enabling users to maintain consistent heating without wastage. This precision not only enhances operational efficiency but also contributes to energy savings over time.

One of the standout characteristics of the CHPES-6A is its compact design, which allows for easy installation in tight spaces where conventional heaters may not fit. Its lightweight nature further simplifies the setup process, reducing labor costs and time.

Moreover, the CHPES-6A features an intuitive user interface that streamlines operation. This modern control system includes programmable functions, allowing users to set specific heating schedules and customize temperature settings according to their operational needs.

Safety is paramount in the design of the CHPES-6A, with multiple integrated safety features. These include thermal protection mechanisms and diagnostic systems that alert operators to any potential issues, minimizing the risk of overheating and equipment failure.

The CHPES-6A is suitable for a vast range of applications, including process heating, fluid heating, and even comfort heating. Its versatility makes it a preferred choice across industries such as food processing, chemicals, and pharmaceuticals.

In summary, the Chromalox CHPES-6A stands out due to its exceptional durability, energy efficiency, and user-friendly interface. With its advanced heating technologies and robust safety features, it is designed to provide reliable performance in various demanding applications, making it an invaluable asset for any industrial operation.