Ho = 35 (95F) Heating Off Temperature; Hb = 37 (98F) High Balance Point; Lb=‐9.5 (15F) Low Balance Point; Ft = Off Filter Warning Time - Smart temp SMT?770 Installer Manual

Ho = 35 (95F) Heating OFF temperature. ‐ See page 41 for more detail.
Only operates if tt=OA and outside temperature sensor is fitted.
Outside air temperature above this value will force the heating function OFF.
Adjustable between 0 ~37c. (32~98F).
HB = 37 (98F) High Balance Point. ‐ See page 40 for more information.
tt=OA, the outside temperature sensor must be fitted and Sw 1=off.
2nd (or 3rd) stage heating is locked out when the outside air is above this
temperature.
Adjustable between 0 ~37c. (32~98F).
LB=‐9.5 (15f) Low Balance point. ‐ See page 40 for more information.
tt = OA, the outside temperature sensor fitted, H3=EH, Sw 1=off and Sw2=on.
Outside temperatures below this value will automatically select Emergency Heat
mode.
Adjustable between ‐9.5 ~25c. (15~77F).
Ft = off Filter warning time
Return air filter cleaning warning time.
Adjustable between off and 900 hours.
Ad = 07 ModBus Address. See page 38 for more information.
ModBus communications address
Bd = 9.6 ModBus Baud Rate
Bd = 4.8 ‐ ModBus baud rate is 4,800 Baud.
Bd = 9.6 ‐ ModBus baud rate is 9,600 Baud.
Bd = 19.2 ‐ ModBus baud rate is 19,200 Baud.
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