Rbu-27 Se Functions; Inlet Or Tunnel Air Source; Cool Weather Protection - Munters Rotem RBU-27 SE User & Installation Manual

Switch
The Off option prevents heater activity. The Auto
Heater 1 – 4
option activates heaters only if the thermostat
Off/Auto
temperature set point has been reached.
The On option activates the sprayers manually. The
Cool Pad 1 –
Auto option activates the sprayers according to
4
temperature readings of the thermostat.
The On option activates the fans manually. The Auto
Fans 1 – 2 / 5
option activates the fans according to temperature
- 16
readings of the thermostat.
The On option activates the fans manually. The Off
option prevents the fans from operating. The Auto
Fans 3 - 4
option activates the fans according to temperature
readings of the thermostat.

3.2 RBU-27 SE Functions

The RBU-27 SE has the following functions:

Inlet or Tunnel Air Source

o

Cool Weather Protection

o
Hot Weather Protection
o
Platinum Fail Safe
o
Inlet/Tunnel Power Supply
o
3.2.1 Inlet or Tunnel Air Source
The following section details how the RBU-27 SE operates the house's air sources.
Active Cool Stage
o
Air Source Setting
o
3.2.1.1 Active Cool Stage
RBU-27 SE controls two sources of the chicken/pig house air supply, inlets and tunnels. In general, inlets are used during
the winter to supply minimum ventilation. Tunnels are used in the summer when the required air supply increases to the
point where minimum ventilation is insufficient.
When Cool Stage 1 or 2 is active, the toggle switch position defines the air source (inlet or tunnel).
o
When Cool Stage 3 is active, the air source is the tunnel ventilation only. If the Inlet/Tunnel toggle switch is
o
set to Inlet, RBU-27 SE bypasses the setting.
3.2.1.2 Air Source Setting
It is extremely important to ensure that the RBU-27 SE air source is set correctly.
Using tunnel ventilation in the winter can bring in too much cold air, endangering your birds/animals health.
o
Inlets supply only a limited supply of air. The house's fans remove the house's air, creating negative
o
pressure. When Cool Stage 2 begins, Fan 5 – 10 begin to operate (along with Fans 1 – 4). In this situation,
negative pressure can drop so low that the drop ceiling can physically collapse.
WARNING! It is extremely important that the Inlet/Tunnel switch be set correctly! Failure to do so can
cause major damage to your flock/herd or physical plant.
3.2.2 Cool Weather Protection
If the temperature drops to the specified levels, RBU-27 SE's heaters begin to function. Thermostat 1 controls Heaters 1-
4 and Thermostat 2 controls Heaters 5 - 8.
NOTE: If the heaters are installed in different locations (heat areas) they function independently.
7
Function Comments
Each stage has its own circuit breaker, and its
own thermostat.
Each stage has its own circuit breaker, and its
own thermostat.
Each stage has its own circuit breaker, and its
own thermostat.