www. kenall.com P: 800-4-Kenall F: 847-360-1781 1020 Lakeside Drive Gurnee, Illinois 60031
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INSTALLATION INSTRUCTIONS
MRIPS312_F-2846_110113
6. Run conduit and DC wiring to an MRI room EMI filter sized to the load of the power supply (supplied by
others). See Figure 2. Make sure wiring is completely enclosed in grounded conduit. Any gaps, regardless of
size, must be closed or wrapped in copper foil tape.
7. If a 0-10V dimmer is to be connected, install at this time. See Figure 2. Dimmer must be installed outside the
shielded MRI environment with an intermediate MRI room EMI filter to the luminaires. Kenall recommends
using a Leviton® lllumaTech™ IP710 series dimmer or Grafik Eye GRX-TVI control interface. Contact Kenall for
suitability of using an alternate sink-type 0-10V dimmer.
WARNING: all DC power and dimming signal wiring must be run through separate EMI filters.
8. Run low voltage supply wires to luminaires using at least 18 AWG wires. Wire distances should not exceed 50
feet (15m) to prevent significant line losses. Class 1 wiring is required. Make sure wiring is completely enclosed
in grounded conduit. Any gaps, regardless of size, must be closed or wrapped in copper foil tape. Special
attention should be paid to the wiring entry point into the shielded space.
9. Make connections to luminaires following the procedure in the luminaire installation instructions.
NOTE: see “Maximum Fixture Connection” section for the maximum number of luminaires that can be connected to
each power supply.
10. Complete any remaining steps on luminaire installation.
11. Connect power on line voltage side and test system operation. Test operation of lighting during MRI machine
idle mode and during scanning operations.
12. Fill out the Installation Registration Form (attached) and fax to Kenall at (847) 360-1781.
Multiple Power Supply Wiring Procedure
Installations involving many luminaires may require multiple power supplies to handle the load. This section
describes the procedure for properly wiring this situation. See “Maximum Fixture Connection” section for the
maximum number of fixtures that can be connected to each power supply.
13. Mount power supplies in the same manner as described in Section II.
14. Wire line voltage and low voltage connections similar to Section II, except follow the wiring diagram shown in
Figure 3 to connect to each fixture group.
All DC Ground (black) leads must be tied together.
WARNING: do not exceed the rated wattage of each power supply (312W). MRI room EMI filters are still required
and must be sized to the load of the supply.