Field connections for RTU- --MP sensors will be made at the Phoenix connectors on the RTU- --MP board. The factory- --installed RTU- --MP control includes the supply- --air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$ert2 package. Refer to Table 2, RTU- --MP Controller Inputs and Outputs for locations of all connections to the RTU- --MP board. Fig. 33 - --RTU- --MP Multi- --Protocol Control Board C07129 548J*14D C10024 Fig. 34 - --

TABLE OF CONTENTS PAGE SAFETYCONSIDERATIONS ......................... 1 INTRODUCTION ................................... 2 RECEIVINGANDINSTALLATION .................. 2- --9 CheckEquipment .................................. 2 IdentifyUnit .................................... 2 InspectShipment................................. 2 ProvideUnitSupport ............................... 2 RoofCurb ...................................... 2 SlabMount ..................................... 2 ProvideClearances

Turn off accessory heater power switch if applicable. 2. Remove economizer hood top panel from the return side of the unit. See Fig. 22. Keep screws and panel next to the unit. 3. Open economizer hood package found on the top skid. 4. Remove red shipping tape that attaches the outside air temperature (OAT) sensor to the economizer assembly. Using two #8 fasteners, found in the hood package, attach the OAT sensor to the economizer according to Fig. 23. NOTE: See label attached to economizer for O

Check for proper grounding wires and power line phasing 548J 548J 548J if the GFCI receptacle does not trip as required. Press the RESET button to clear the tripped condition. CO8283 PRIMARY TRANSFORMER CONNECTIONS TERMINALS L1: RED +YEL H1 + H3 L2:BLU+GRA H2+H4 L1: RED H1 Splice BLU + YEL H2 + H3 L2: GRA H4 L1: RED H1 UNITVOLTAGECONNECTAS208,230240460480575 600 L2: GRA H2 Fig. 24 - --Powered Convenience Outlet Wiring Maintenance: Periodically test the GFCI receptacle by pressing the TEST button

Try the following solutions: S Turn the RTU---MP off, then on. S Format the RTU--MP. S Download memory to the RTU---MP. S Replace the RTU---MP. 580J 45 Table 18 – Troubleshooting Alarms POINTNAMESafetyChainAlarmFireShutdownAlarmSpaceTempSensorFailureSATSensorAlarmHighSpaceTempAlarmLowSpaceTempAlarmHighSupplyAirTempLowSupplyAirTempSupplyFanFailedtoStartSupplyFaninHandCompressorSafetyAlarmSetpointSliderAlarmDirtyFilterAlarmSwitchConfigurationAlarmMisconfiguredAnalogInputOATSensorAlarmSpaceRHSensor

Slide burner access panel out. 2. Remove the 7 screws that attach induced- --draft motor housing to vestibule plate. (See Fig. 34.) 3. The blower wheel can be cleaned at this point. If additional cleaning is required, continue with Steps 4 and 5. 4. To remove blower from the motor shaft, remove 2 setscrews. 5. To remove motor, remove the 4 screws that hold the motor to mounting plate. Remove the motor cooling fan by removing one setscrew. Then remove nuts that hold motor to mounting plate. 6. To

QUIET, EFFICIENT OPERATION AND DEPENDABLE PERFORMANCE — Compressors have vibration isolators for quiet operation. Efficient fan and motor design permits operation at low sound levels. Unit sizes 090-180 offer lower utility costs through part-load operation using 2 stages of cooling. Quiet and efficient operation is provided by belt-driven indoor fans (standard on all units over 5 tons). The belt-driven indoor fan is equipped with variable-pitch pulleys which allow adjustment within the rpm range

Integrated capacity is maximum (instantaneous) capacity less the outdoor-fan motor input, and indoor-fan motor input) effect of frost on the outdoor coil and the heat required to defrost it. rh — Relative Humidity NOTES: 78 PERFORMANCE DATA (cont) INSTANTANEOUS AND INTEGRATED HEATING RATINGS (cont) 549B090 (71/2 Tons) Return Air (F db) Cfm (Standard Air) Temperature Air Entering Outdoor Coil (F db at 70% rh) –20 –10 0 10 17 30 40 47 50 60 55 2250 Cap. 31.4 28.8 37.8 34.9 44.5 41.0 52.1 47.8 57.6

wg) 1.4 1.6 1.8 2.0 Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts Rpm Bhp Watts 3000 874 1.60 1422 926 1.82 1613 974 2.11 1920 1012 2.41 2134 3100 880 1.68 1491 933 1.87 1656 983 2.16 1963 1017 2.44 2177 3200 888 1.77 1569 934 1.94 1718 988 2.18 1980 1025 2.47 2230 3300 897 1.86 1648 940 2.03 1853 989 2.24 2031 1032 2.53 2282 3400 907 1.97 1744 947 2.14 1946 991 2.32 2099 1038 2.57 2318 3500 916 2.07 1831 956 2.25 2039 997 2.43 2195 1043 2.64 2380 3600 926 2.18 1927 966 2.41 2134 1004 2.54 2291 1045

A freeze protection thermostat (FPT) is located on the indoor coil. It detects frost build-up and turns off the compressor(s), allowing the coil to clear. Once frost has melted, the compressor can be reenergized. 11 CONTROLS (cont) Heating, Units Without Economizer — With unit main power on, set thermostat at HEAT position and desired room temperature. Set fan switch at AUTO. (on demand) or ON (continuous) position. On a drop in room temperature, heating contactor no. 1 in the thermostat closes,