Bard CTHAC181-A Installation Instructions Manual

Contents

Bard CTHAC181-A Installation Instructions Manual Manual pdf 10 page image

Page 8Manual 2100-292Optional ControlsInstallation Instructions — CMA-1Disconnect all power to unit. Remove control panel cover.Step 1. Mount lockout relay in position shown in Figure 5.Step 2. Disconnect yellow low voltage (Y) wire at compressorcontactor coil or (Y1) at optional CMA-5 and reconnectto terminal #4 of the lockout relay.Step 3. Connect yellow wire from terminal #3 of the lockoutrelay to the (Y) terminal of the compressor contactorcoil or (Y1) at optional CMA-5. This is the terminalthat the wire was removed from in Step 2.Step 4. Route high (red) pressure switch wires up through thebushing in the bottom of the control panel. Connect thehigh pressure switch wires between terminal #5 of thelockout relay and the (Y) terminal of the compressorcontactor coil or (Y1) at optional CMA-5.Step 5. Remove service port cap on the discharge line. Installthe high pressure switch on the discharge line with theflare tee adapter that is brazed to the high pressureswitch. Check for pressure at the flare tee dill valvesafter installation to insure that the dill valve in the unitservice port was depressed by the flare tee connector.Check for leaks at the flare tee connectors. Replaceservice port cap on the flare tee service port and tighten.Step 6. Recheck wiring. See Figure 6. Check for properoperation of the unit by energizing in cooling mode forat least 5 minutes. The unit should not go into lockout.Step 7. Replace all panels and covers. This completesinstallation.Figure 6 — Installation Instructions forCMA-1 High Pressure ControlMIS-597CMA-5 CompressorTime Delay RelaySK109 LowVoltage Start KitCMA-6Llow AmbientFan Cycling ControlTerminal BlockCMA-1 HighPressureControl LockoutRelayMIS-592CMA-2 Low Pressure Control AssemblyCMA-4 High and Low Pressure Control AssemblyCMA-11 Dual Pressure and Low Ambient Fan CyclingControl AssemblyMIS-592Figure 5 — Component Mounting Location