BTU XT-70 - Appendix F: XT CO Management; Appendix G: XT Potato Dehumid

97
BTU VENTILATION CORPORATION ● OFFICE 888-884-8070 ● FAX 218-346-7485 ●
www.btucorp.com
XT-70 Control Panel 97
START
AUX 1 CFG
= 2
DEHUMID SW
AUTO
yes
no
RETURN
no
yes
OSA <
SP - DH_DIFF
no
yes
HEAT SW
ON
no
yes
TURN RETURN
AIR HEATER ON
COOLING / DEHUMID
AUX 1 CFG E2 MEMLOCATION
MUST BE SET TO 2.
THE AUX 1 SWITCH BECOMES
THE DEHUMID SW.
DH_DIFF IS THE DEHUMID
DIFFERENTIAL. THIS SETTING
WILL MAKE SURE THE OSA
IS COLD ENOUGH TO BE DRY
AIR. A TYPICAL SETTING
WOULD BE 5 TO 10 DEGREES.
THIS SETTING IS IN 1/10 OF A
DEGREE. FOR 5 DEGREES,
SET TO 50. ZERO SETTING
WILL DISABLE FEATURE.
THE RETURN AIR HEATER
MUST BE SIZED CORRECTLY,
IF TO LARGE IT WILL CAUSE
THE DOORS TO GO FULLY
OPEN AND YOU WILL LOSE
TEMPERATURE CONTROL.
WHEN THE COOLING / DEHUMI
D
MODE IS FIRST INITIATED
ACTIVATE THE MCR TIMER SO
THAT ONCE YOU ARE IN THE
MODE YOU WILL STAY THERE
FOR THE LENGH OF THE
MCR EVEN IF THE OSA WARMS
UP.
RESET THE
MCR TIMER
PLH > HSP
yes
no
COOLING
MODE
yes
no
APPENDIX G:
POTATO DEHUMID