INSTALLATION

Mount the switch with the toggle through the hole from inside the wiring compartment. Secure the switch using the on/off plate and hex nut (Figure 4).

For all LUH-2/KUH-2 through LUH-15/KUH-15 except 480 Volt, 3 Phase units

Install the 2 pole relay after checking the coil voltage on the nameplate to be sure the control voltage of the relay matches the control voltage of the heater. The relay should be mounted on the control mounting plate located behind the fan switch (Figure 5).

For all 480 Volt, 3 Phase and all LUH-20/KUH-20 through LUH-45/KUH-45 units.

Install the 3 pole relay after checking the coil voltage on the nameplate to be sure the control voltage of the relay matches the control voltage of the heater. The relay should be mounted on the control mounting plate located behind the fan switch (Figure 5).

Summer Fan Switch Mounting

Figure 4

Relay

Mounting

Figure 5

WIRING

The basic stock heater diagram (Figure 6) will be changed to the finished diagram (Figure 7).

1.Remove the red wire connecting the secondary of the control transformer to one side of the holding coil on the heater contac- tor, and discard. Wire the red wire supplied on the fan switch, (Number 11) to the open connection on the transformer.

2.Connect the black wire (Number 2) on the fan to the relay coil connection on the fan relay.

3.Connect the remaining black wire (Number 8) to the open heater contactor coil terminal.

4.Connect the open fan relay coil terminal to the other heater contactor coil terminal.

HEATERS WITH SINGLE PHASE MOTORS

HEATERS WITH THREE (3) PHASE MOTORS

6.Remove the #1, #2 and #3 motor wires from terminals T1, T2 and T3 on the heater contactor. Connect the #1 wire and #3 wire to the bottom two relay contact terminals. Wire the two loose jumper wires (supplied) from the top two relay contact terminals to L1 and L3 on top of the heater contactor. The #2 motor wire should then be connected to terminal T2 on the heater contactor. After completion of the heater installation, when the fan circuit is first turned on, check the rotation of the fan to be sure air is moving from the back of the heater to the front. If the air is moving in the opposite direction, inter- change the motor lead connections on the bottom of the relay which should correct the air flow direction.

5.Remove the black and white fan motor lead wires from the terminals T1 and T3 on the heater contactor and wire them to the bottom two relay contact terminals. Wire the two loose jumper wires (supplied) from the top two relay contact termi- nals to L1 and L3 on the top of the heater contactor.

Optional Thermostat

Built-in or Field Installed

Optional

To Element Wiring

Thermostat

 

Built-in or

Cutout

Field Installed

X1

X2

 

XFMR

T1 T2 T3

 

C1

H1

H2

 

 

 

L3

1 2

3

7

9 8 1012 11

Motor

Cutout

To Element Wiring

Motor

1Ø or 3Ø

L2

L1

Optional Disconnect Switch

Built-in or Field Installed

Power1Ø or 3Ø 60Hz

Use For 3Ø

X1

H1

X2

XFMR

H2

T1

T2

T3

C1

 

 

 

 

L3

 

 

L2

 

 

L1

Use For 3Ø

Power

60Hz

Figure 7

Optional Disconnect Switch Built-in or Field Installed

Figure 6

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Chromalox ESFS-40A, ESFS-41A, ESFS-47, ESFS-42A installation instructions Wiring, Xfmr

ESFS-47, ESFS-42, ESFS-42A, ESFS-41A, ESFS-40 specifications

Chromalox, a leader in thermal technologies, has developed a series of exceptional products including the ESFS-40A, ESFS-41, ESFS-40, ESFS-41A, and ESFS-42A. These models are engineered for a wide range of heating applications, making them ideal for industrial, commercial, and residential settings.

The ESFS series is renowned for its innovative construction and advanced features. One of the main highlights is its use of high-grade materials, which ensure durability and longevity. These units are designed to resist corrosion and withstand harsh environmental conditions, making them reliable for continuous operation in demanding applications.

A significant technology integrated into the ESFS series is its state-of-the-art control systems. These units provide precise temperature control, enabling users to achieve optimal heating settings efficiently. The digital controls allow for easy programmability, enhancing user flexibility and minimizing energy consumption. This advanced control mechanism not only boosts performance but also enhances safety, as it minimizes risks associated with overheating and other potential hazards.

The ESFS-40A and ESFS-41 models come equipped with robust heating elements that ensure rapid heat-up times and consistent output. These elements are designed to distribute heat evenly, which is crucial for processes that require uniform temperature profiles. The ESFS-40 and ESFS-41A models offer similar benefits but feature additional capabilities that expand their functionality in more specialized applications.

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With a focus on ease of installation, the ESFS series is designed with user-friendliness in mind. The compact configurations allow for flexible placement, whether mounted on a wall or installed in specific industrial setups. Additionally, the integration of features like quick-connect terminals simplifies the wiring process, further enhancing the ease of installation.

In summary, the Chromalox ESFS-40A, ESFS-41, ESFS-40, ESFS-41A, and ESFS-42A represent the pinnacle of heating technology. Their combination of innovative features, robust performance, and energy efficiency positions them as an optimal choice for a variety of heating applications, ensuring reliability and effectiveness in any setting.