Precision Control Systems PanelIR 4555 - Manual (Page 17)

Model 4555 PanelIR TM User Manual Installation
Single Phase Wiring
Prepare heater unit for wiring
Remove electrical connection
“knock-outs”
Install high temperature wire
Wiring Power to Heater
1. Remove the three screws from each of the end covers on each end of the heater
using the Phillips screwdriver.
2. Carefully remove each of the end covers and set them aside so that they are not
damaged.
1. Using the hammer and punch, remove one circular “knock-out” from each end of
the top of the heater by placing the metal punch on the knock-out outline and
striking the punch with the hammer until the knock-out protrudes into the heater.
2. Using the pliers, remove both knock-out slugs from the heater body.
3. Discard the knock-out slugs.
1. On each end, use the tape measure to measure the distance from the center of each
terminal block to the point at which the supply power and the high temperature
wire are to be joined.
2. Include additional length to account for wire travel through the knock-out hole and
enough to perform adequate wire stripping prior to attachment to the heater and
power supply wiring.
3. Cut two lengths of high temperature wire corresponding to the measured lengths.
4. Strip the insulation from each end of each wire to expose the conductor material
(approximately ½”)
5. Feed one wire (each) into the heater through each end of the heater between the
terminal blocks and the back of the heater and up through the knock-out hole.
Install the wires into the terminal blocks (see Figure 3-4).
6. If the amp draw is 50 amps or less, the stripped end of the wire can be inserted
directly into the terminal block. If it is greater than 50 amps, attach a ring lug to the
end of the wire and install the ring onto the bus bar with a screw and nut.
1. Attach the unconnected end of each high temperature wire to the power supply
wiring using appropriate wire joining techniques (as specified by local electrical
codes and standards).
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