INSTALLATION (Cont’d)

KDS–2 and KDS – 3

8.The cover plate should be placed over the rectangular opening with its four mounting holes lined up with the four holes in the cabinet and the four holes in the mounting bracket (see Figure 7).

9.Insert the four self tapping screws into the four holes until they engage the holes in the mounting bracket and tighten until they are secure (see Figure 8).

10.Place plastic bezel over the installed switch and push towards the switch until the tabs snap into place (see Figure 9).

Rear Case

Switch Assembly Mounted to Rear Case

(4) 8-32 Screws

Cover Plate

 

Rear Case

 

 

Mount Switch Assembly

 

Onto Rear Case of Heater

Figure 7

Figure 8

Snap Plastic Housing

Into Place

Rear Case

Figure 9

WIRING

POWER DISCONNECT SWITCH (Available as a kit or factory installed option.) (KDS-1)This switch disconnects the power to power leads when the handle is rotated to the “0” posi- tion (left). The power is on when the switch handle is rotated to the “1” position (top) position. (KDS-2 and KDS-3) This switch disconnects power to the power leads when the handle is placed in its full lower position. The power is on when the switch handle is in its full upper position.

1.Use the three pigtail leads supplied with kit (40 & 80 Amp) when connecting to the power line.

a. Use No. 4GA Copper conductor wire only for 100 Amp dis- connect when wiring to the power line.

2.The power disconnect wiring to the heater is to be made using the pigtail leads supplied on the heaters up to and including 25 kW. On larger heaters, the installer should supply 105˚C type AWM 600V wire.

ELECTRIC SHOCK HAZARD. Disconnect all power before installing disconnect switch. Failure to do so could result in personal injury or property dam- age. Disconnect switch must be installed by a qualified person and must be effectively grounded in accordance with the National Electrical Code, NFPA 70.

For future replacement parts, the model number should be modi- fied on the nameplate to show that a disconnect kit has been field installed on the heater. A label kit (see Figure 14) (P/N 170- 302788-002) has been included in the plastic envelope located in the disconnect kit. Cut off the appropriate number for the size dis- connect being installed (40 Amp = 1; 80 Amp = 2; 100 Amp = 3). The label has a pressure sensitive adhesive back so that the num- ber can be placed over the “0” as shown in Figure 14.

To

Power

Supply

See Note 2

Power

 

Pigtail

Disconnect

 

Leads

Switch

 

Contactor

L1

AL1

 

L2

AL2

See Notes

 

 

L3

AL3

 

Notes:

1.This illustration shows wiring hook up for three phase service. Remove lead wires marked L2 and AL2 when using one phase power service.

2.For units without contactors, disconnect switch is to be wired to lead wires on heater power.

3.Use copper supply wire only with this switch.

Figure 10

KUH-02 through KUH-25

Power Disconnect Switch

 

Power

 

 

Disconnect

 

 

Switch

Contactor (1)

To

L1

AL1

L2

AL2

Power

Supply

L3

AL3

 

Contactor (2)

KUH-30 through KUH-45 units with 2 contactors where the total load does not exceed 48 Amps.

Figure 11

3

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Chromalox KDS-3, KDS-1, KDS-2 specifications Installation Cont’d, Wiring, KUH-02 through KUH-25 Power Disconnect Switch
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KDS-3, KDS-2, KDS-1 specifications

Chromalox has established a strong reputation in the industrial heating sector with its KDS series: the KDS-1, KDS-2, and KDS-3. These advanced heating units are engineered to meet the rigorous demands of various applications, ensuring both efficiency and reliability.

The KDS-1 model is designed for basic heating requirements. It incorporates a compact design, making it ideal for applications where space is limited. The KDS-1 features a robust stainless-steel construction, which enhances durability and resistance to corrosion. This unit can operate at varying watt densities, giving users flexibility to adapt to their specific thermal needs. Its simple control interface allows for easy operation, making it suitable for users at different experience levels.

The KDS-2 takes things a step further by introducing advanced temperature control capabilities. This model features integrated digital controllers with PID (Proportional-Integral-Derivative) feedback technology, allowing for precise temperature regulation. The KDS-2 is particularly effective in processes where maintaining exact temperatures is crucial. Users can benefit from programmable settings, offering the ability to tailor heating cycles to specific requirements. The KDS-2's enhanced energy efficiency is another significant advantage, which can lead to substantial cost savings over time.

For those needing even higher performance, the KDS-3 stands out with its cutting-edge technology. This model is engineered for heavy-duty applications and can manage larger loads without compromising efficiency. The KDS-3 features advanced insulation materials that optimize heat retention, minimizing energy loss during operation. The unit also includes advanced safety features such as over-temperature protection and limit controls, ensuring operators can use it with peace of mind. Furthermore, the KDS-3 supports versatile installation options, making it adaptable to various industrial environments.

All three units in the Chromalox KDS series share common characteristics, including user-friendly interfaces and a reputation for reliability. Their designs focus on easy maintenance and serviceability, which reduce downtime and enhance productivity. With a commitment to innovation and quality, Chromalox continues to set industry standards, making the KDS series a preferred choice for efficient thermal management in various sectors, from food processing to chemical manufacturing. Whether for straightforward applications or complex industrial processes, the KDS-1, KDS-2, and KDS-3 offer reliable solutions tailored to meet diverse heating needs.
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