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® 2018 Valco Companies, Inc.
Sample Device Setpoints.vsd
Progressive Heating and Cooling Example
Furnace Group 1
Furnace Group 2
Furnace Group 3
Furnace Group 4
Heater/Brooder Group 1
Heater/Brooder Group 2
Heater/Brooder Group 3
Sidewall Fan Group 1
Sidewall Fan Group 2
Curtain Group 1
Curtain Group 2
Stir Fan Group 1
Tunnel Fan Group 2
Tunnel Fan Group 3
Tunnel Fan Group 4
Tunnel Fan Group 5
Cool Pad - Cycle 1
Cool Pad - Cycle 2
Cool Pad - Cycle 3
Cool Pad - Cycle 4
Temperature setpoint
Legend
Cooling Device Temp Off
Cooling Device Temp On
Heating Device Temp On
Heating Device Temp Off
Tunnel Exit
Tunnel Entry
Evaporative cooling is used on
very hot days as long as the
humidity isn't so high that the
water fails to evaporate.
Note
the Tunnel Group 1 Off
Temp is set lower than the
Tunnel Exit temperature.
This ensures that some
ventilation will be provided
as the temperature drops
back to the Tunnel Exit
value. Be certain enough
tunnel fans have an Off
Temp lower than the Tunnel
Exit value to maintain
adequate ventilation
throughout tunnel mode.
As the temperature rises above the
setpoint, more fans run and inlets open
further.
If sidewall ventilation isn't enough to
cool the animals, the building
transitions into tunnel mode. Only
tunnel fans and inlets are used to
create a wind chill effect.
C
ool
fans
and
nat
ur
al
-onl
y i
nl
et
s
shut
of
f dur
ing t
unnel
m
ode.
(open based on temp)
(open based on temp)
Tunnel Inlet Group 1
Tunnel Inlet Group 2
Tunnel Inlet Group 3
Stir Fan Group 2
Tunnel Fan Group 1
Tunnel Inlet Group 4
Tunnel Inlet Group 5
Temperature
70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
21.1 21.7 22.2 22.8 23.3 23.9 24.4 25.0 25.6 26.1 26.7 27.2 27.8 28.3 28.9 29.4 30.0 30.6 31.1 31.7 32.2
(tunnel inlets open
proportional to fans running)
APPENDIX 1 - Progressive Heating and Cooling Example
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