valutazioni - 4, GPA: 4.3 ( )

Produttore : Chromalox File Size : 367.28 kb File Nome : IM-PF481.pdf Lingua di insegnamento:

See Model be installed by a qualified electrician. Before per- Number versus Kit Model Number on page 3. This kit can also be forming any of the following operations, disconnect used where low voltage control wiring is specified. all power to the heater to prevent possible fatal injury. INSTALLATION The kit comes complete with all necessary wiring and mounting screws. A wall box plate is included for remote mounting of the selector switch and can be discarded if the switch is to be mounted on the heater. To install on the heater, open the wiring access door located on the bottom of the heater by turning the captive latching screw 90 degrees in either direction (Figure 1). The selector switch is to be mounted using the knockout hole on the front of the heater, located right above the Chromalox or Heatflo label (Figure 2). The switch has all of the wiring connected to the correct terminals with the three leads to be wired to other components marked by their respective terminal number, these are wire numbers 2, 8 and 11. (Figure 3, Figure 3A) Before installing the switch, check all the wiring connections to be sure none have become loose during shipping and handling. Figure 1 Captive Latching Screw Summer Fan Switch Knockout Hole Figure 2 Selector Switch 2 Pole Relay Wall Plate Selector Switch 3 Pole Relay Wall Plate MountingHardware MountingHardware Figure 3 Figure 3A © 2010 Chromalox®, Inc. 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). WIRING Summer Fan Switch Mounting Figure 4 RelayMounting Figure 5 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 contactor, 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 5. Remove the black and white fan mot...

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