Local thermostats and humidistats
are assumed to schedule "unoccupied" status with appropriate relaxed temperature and humidity setpoints.
One solution is to place the humidistat
in a location that's both easily accessible and provides an accurate reading of the patient's immediate environment.
The other systems also have a humidistat
to control dehumidifiers or change system operation in response to the space-relative humidity level.
Senses when water in vaporizer gets too hot because humidistat
is stuck on.
During the cooling season, even if the indoor air relative humidity is not mechanically controlled (there is not a humidistat
that senses the indoor conditions and activates the system response), the air, which is a mixture of outdoor air and recirculated indoor air, is partly dehumidified while passing through the cooling coil of the fan coil.
Disconnect the wiring to the solenoid valve and humidistat
and remove the old humidifier (Photo 1).
Its digital controls include an automatic humidistat
and a built-in hygrometer.
Does your MC system only control temperature (no humidistat
built into the system)?
Consider installing a heat recovery unit with a humidistat
Better models have adjustable fan speeds, a built-in humidistat
and automatic shutoff.
This control method can be implemented by using a humidistat
wherein a humidity sensor measures the RH in the controlled space and heating of the air is initiated by the controller when the RH goes above a pre-set value.
Automatic controls for water-level height and a solid-state humidistat
([+ or -] 2%) are factory installed.