1. Education You Can Build On Wiring / Installation Emerson Blue Easy Reader 1F95EZ-0671

2. Heat Pump / Dual Fuel Staging Detail 2 nd Stage: HP1 Heat Mode 3 rd Stage: HP1 Heat Mode 1 st Stage:Emergency Mode2 nd Stage:Emergency Mode 3 rd Stage:HP2 – Heat Mode4 th Stage:HP2 – Heat Mode 1 st Stage:Emergency Mode2 nd Stage:Emergency Mode W/E W2 Dual fuel option de- energizes any compressor stage when auxiliary heat is energized.

3. Terminal Designations (Wiring) TerminalDescriptionSS1MS2HP1HP2 O/BReversing Valvexx Y22 nd Stage Compressorxx Y11 st Stage Compressorxxxx GFan Relayxxxx RCPower for Coolingxxxx RHPower for Heatingxxxx CCommon Wirexxxx W/E 1 st Stage Heat or Aux Heat for HP2 xxxx W2 2 nd Stage Heat MS2 or 4 th Stage Heat HP2 xx LDiagnostics (Optional)

4. Wiring for Conventional Systems (Non-Heat Pump) * *For two transformer systems remove the jumper Common connection optional – required for diagnostic indicator Single Stage (SS) in Yellow Multi-Stage (MS) add Blue Y2 Y W/E W2 G RH RC C #6 Terminal is for a power closed 3 wire zone valve

5. Wiring for Heat Pump Systems Heat Pump (HP1) in Yellow Heat Pump (HP2) add Blue Y2 Y O/B G *W/E C *W2 Common connection required for diagnostic or malfunction indication. Dual Fuel option, if selected turns off compressor(s) when Auxiliary stages energizes.