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13 Installer Manual
21 Humidification Mode – For use with an external humidifier. Selects between disabling humidification
(OFF), dependent control (DEP) or independent control (IND). The DEP setting controls humidification
only during a call for heating. The IND setting allows humidification output in the heat mode, but does
not require a call for heating. NOTE: It is recommended that the IND setting only be used with systems
designed for low air temperature humidification such as steam humidification. Always ensure the heat
exchanger or other system parts are not exposed to excess water from condensation or other sources.
When there is any doubt, use the OFF or DEP setting.
22 Auto Humidity Set Point Limit [note 10] –
Select between turning the automatic humidity set point
limit to auto (AUTO) or manual (MAN). When AUTO is selected, the humidity setpoint maximum is limited
based on the outdoor temperature. Selecting MAN allows you to manually control the level of humidity
between 10% and 50%.
23 Dehumidification –
Selects between dehumidification disabled (OFF), dependent dehumidification (DEP)
or independent dehumidification (IND). (DEP) If the humidity level is above the humidity set point, cooling
stays on until the humidity level drops below the set point or when the over cooling limit is reached in
installer setting 24. (IND) For use with an external dehumidifier. When the humidity level rises above
the dehumidification set point, both the G (Fan) and D terminals are activated.
24 Dehumidification Over Cooling Limit [note 11] – Select the number of degrees the system is allowed
to over cool in attempting to reduce humidity.
25 Dehumidification Terminal (D) Output [note 12] – Select normally inactive relay (NI) or normally
active (NA) relay for D terminal output in independent dehumidification mode. This setting can also be
used for dehumidification fan speed control.
OFF Humidification feature is disabled (OFF)
DEP
Dependent (DEP) mode energizes the H/D terminal during a call for
humidification only during a call for heating
AUTO* Maximum humidity setpoint is limited based on outdoor temperature (AUTO)
MAN* Humidity setpoint can be adjusted between 10% and 50% relative humidity (MAN)
IND Independent (IND) mode energizes the H/D terminal and the system fan during
a call for humidification
AUTO* Maximum humidity setpoint is limited based on outdoor temperature (AUTO)
MAN* Humidity setpoint can be adjusted between 10% and 50% relative humidity (MAN)
Humidification Installer Setting Summary (21-22)
OFF Dehumidification feature is disabled (OFF)
DEP
Dependent (DEP) mode uses the cooling system for dehumidification and
allows you to set an overcooling limit
1, 2 or An overcooling limit (LIM) can be selected, which will allow the cooling system
3 LIM to run past setpoint 1, 2 or 3 degrees if needed.
IND* Independent (IND) mode energizes the H/D terminal and the system fan
during a call for dehumidification
dh NA
Normally Active (NA) enables H/D terminal output until a call for dehumidification occurs
dh NI Normally Inactive (NI) enables H/D terminal output during a call for dehumidification
Dehumidification Installer Setting Summary (23-25)
* Only available if a Braeburn model 5490 outdoor temperature sensor is connected.
* Not available if Humidification was enabled in Option 21.
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