Installation Guidelines for Elite Environmental Control Unit Retrofit Kits

To install the Elite Environmental Control Unit Retrofit Kit, first trun the A/C unit's circuit breaker off. Disconnect the existing control wire harness from the A/C unit. When replacing a 3-knob control on a self-contained model, disconnect the poloarized plug. Remove the old control/display panel form the bulkhead. Connect the wiring harness from the retrofit kit to the a/c unit's electrical box, or simply connect the polarized plug if applicable. Mount the retrofit kit electrical box in a dry, accessible area with the screws provided. Note: Mechanically controlled sel-contained (SC) units use polarized plugs, while central system (CS) units are connected to their control by a terminal strip (see illustration). To retrofit a CS unit, cut the wires at the MCP, splice and connect these wires to the Passport I.O circuit board as shown in the wiring diagram provided inside the electrical box.

Allow adequate access for all wiring connections. Wiring and circuit breakers must be sized according to marine design standards. Only stranded tinned copper wire should be used. Make sure all components are properly grounded and bonded.

The mounting plate shown in the illustrations is designed to take the place of the MCP 3-knob panel. Kits to replace digital displays have smaller mounting plates designed for these controls. After mounting the plate, connect the display cable from the retrofit electrical box to the ELite display panel. Then mount the display panel onto rhe plate using the screws shown.

There is an air temperatur sensor built into the left edge of the Elite display panel. In order for this sensor to operate properly, the display should not be located in direct sunlight or near any other heat source. The display should not be mounted in the supply air stream.The display panel should be mounted on a inside wall, slightly higher than mid-height of the cabin, in location with freely circulating air where it can best sense average temperature. See more specific mounting instructions in the ELite or SH-ELite manual.

If the above guidelines for mounting the Elite display cannot be followed, then a remote air sensor and cable must be used. Open the retrofit electrical box and plug the air sensor into the 6-pin socket marked "J4" (ALT AIR). Mount the remote air sensor in the return air stream behind the return air grille/opening. Utilizing the remote air sensor cable will automatically override the display panel air sensor.

The new optional "Pump Sentry" feature monitors condenser coil temperature in direct expansion units; it shuts the system down if the coil gets too hot due to loss of seawater flow. The 6-pin water sensor must be plugged into socket "J5" (SERVICE/H2O) on the Passport I/O circuit board. Connect the water sensor to the condensor coil seawater outlet and insulate it. When using the AH-ELite with a chilled water air handler, plug the existing water inlet sensor cable into socket "J5" (SERVICE/H2O). The water inlet sensor should be connected to the chilled water inlet pipe and insulated.

An optional outside air sensor cable is available if needed. Plug that cable into the other 6-pin socket marked "J3" (OAT). Mount the sensor outside but not in direct sunlight. Do not stretch cable or staple when mounting.

Refer to the Operations Manual and Quick Reference Card for a throught explanations of programming and operating of the Elite Environmental Control Unit. Ensure that the power supply is turnec off before opening electrical box.