STULZ Ultra-Series Humidifier Controller
(August, 2013)
45
Drain Enable: Yes
BMS Keep Alive: Yes
Integration Time: 900
Alarm Delay: 10s
Cab. Fan Start: 104°F
Cab Hi T Alarm: 130°F
Cab Lo T Alarm: 40°F
Humidifiers and Cabinet Fan
5.7.2
The top line reflects the type of humidifier that is being
controlled.
The number of humidifiers is set to number of humidifiers
attached to the E-Ultra Controller. This should be set to the
exact number of humidifiers. If it is set too high, time is
wasted in the Modbus communications trying to access
the non-existent humidifiers.
The line with “Humidifier Temp” is set to YES if the
humidifiers have nebulizer temperature sensors.
The line with “B2 is Temperature” only appears on the
small controller and allows the use of a control
temperature sensor instead of a limit humidity sensor. This
allows a small controller to have dewpoint control.
The cabinet fan can be enabled or disabled by setting this
parameter to “Yes” or “No”. All E-Ultra cabinets ship with a
NTC temperature, so this parameter should always be set
to “Yes”.
An alarm can be enabled if the cabinet temperature falls
out of range (too hot or too cold, by setting the last
parameter to “Yes”.
Drain, BMS and Integration
5.7.3
Drain Enable determines if the system will drain the
humidifiers after being idle for a long period of time.
BMS Keep Alive set to Yes requires the BMS system to
toggle the keep-alive parameter between 1 and 2 at a
maximum of 10 minutes between changes. The purpose is
to allow the E-Ultra to determine control outputs when the
BMS goes off line.
Integration time is the number of cycles used in the PI loop
for Humidity or Dew Point Control. The larger the number,
the longer it takes to wind up the integrator and increase
the percentage output when the humidity does not change.
Cabinet Fan Start temperature is the trip point for the
cabinet fan to start. The Cabinet Fan high and low alarm
points are shown.
Input
Configuration
5.7.4
The Control Temperature sensor, if available, can be
enabled in this screen.
The Log Remote Shutdown, if set to YES, will be treated
as an alarm and logged as such.
Air Flow is the Air Flow Switch input.
Pin 4 can be assigned to None, Water Detector or
Condensate Pan depending on the sensor and function.
Fire/Smoke and High Limit Humidistat can also be enabled
on this screen. Optionally, the High Limit Humidistat may
be set to cause an alarm.
Num of humidifiers: 16
Humidifier version: 3
Humidifier Temp: No
B2 is Temperature: No
Cabinet Fan: Yes
Cabinet Fan Alarm: No
Unit is DRH
System Config
Cntrl Temp Sensor: No
Log Rem. Shutdown: No
Air Flow: No
Pin 4: None
Fire/Smoke: No
High Limit Hstat: No
Hstat Alarm: No
Input Config
