Honeywell SDC Service Manual page 59

SDC / DHC
EN2H-0221GE51 R0812
Switching time programming (programs P2 and P3 disabled)
Upon accessing the menu-selection level, the "Timeprograms"
menu always appears first.
Enabling of programs P2 and P3 in the "System Parameters"
menu (see 5.2 Menu-selection level, pg. 48 ).
HC Direct heating circuit
MC-1 Mixed heating circuit 1
MC-2 Mixed heating circuit 2
DHW Hot-water heating circuit
Hcy Heating cycle
Operation
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