Lennox BALTIC Series Application Manual page 49

wiring diagrams
ELECTRICAL DATA
BCK = Cooling only unit
BHK = Heat pump unit
BGK = Cooling only unit with gas fired heating
BDK = Heat pump unit with gas fired heating
MAIN CURRENT DIAGRAM TRI / 400V / 50Hz + N + T
Page 48 - Application Guide 04-2003 / Rooftop BALTIC Series