AAON SS1063 User Manual

VCC-X SETPOINTS
VCC-X Operator Interface SD
44
Setpoint Screen #12 - Outdoor Dewpoint
Setpoint
VCC-X Spts ID:#
Outdoor Dewpoint
Setpoint: 55.0ºF
On MUA confi gured units (100% or high percentage Outdoor Air
units), or if this is a unit in Hood On MUA operation, Dehumidifi ca-
tion will be initiated if the Outdoor Air Dewpoint rises 2°F above
this setpoint. If the humidity falls 2°F below this setpoint, the unit
will leave the Dehumidifi cation Mode.
Description Minimum Default Maximum
Outdoor Dewpoint
Setpoint
35ºF
(1.7
ºC)
55ºF
(12.8ºC)
80ºF
(26.6ºC)
Setpoint Screen #13 - Indoor RH Setpoint
Disable/Low Reset and Enable/High Reset
Source
VCC-X Spts ID:#
Indoor RH Setpoint
Disable/Lo Rst: 50%
Enable/Hi Rst: 60%
This screen is used to set the Indoor Humidity Setpoints and the
Space Humidity Reset range used to reset the Coil Suction Tem-
perature Setpoint.
On units where Indoor Humidity is used to initiate Dehumidifi cation
(non MUA units), the unit will enter Dehumidifi cation as the Indoor
Humidity rises above the Enable/High Reset Source (Hi Rst Src)
Setpoint and will leave Dehumidifi cation as the Indoor Humidity
falls below the Disable/Low Reset Source (Lo Rst Scr) Setpoint.
The Indoor Humidity Setpoint range confi gured on this screen also
establishes the Indoor Humidity range that will be used to reset
the Coil Suction (Saturation) Temperature Setpoint between the
High Reset Limit (HiRst Lmt) and the Low Reset Limit (Lo Rst
Lmt) confi gured on the next screen. If not reset is desired the Coil
Temperature Setpoints on the following screen should both be set
to the same value.
The following two paragraphs will describe the reset function.
If no reset of the Coil Suction (Saturation) Temperature Setpoint is
desired, then on Setpoint Screen #14 set the Coil Temperature High
Reset Limit the same as the Coil Temperature Low Reset Limit.
On MUA units, where the Outdoor Dewpoint Setpoint is used to
initiate Dehumidifi cation, this screen is only used to set the Indoor
Humidity values that will reset the Coil Suction (Saturation) Tem-
perature Setpoint – if reset is desired. See the 3rd paragraph above
for the description of how to set this up.
VCC-X Setpoint Screens
Description Minimum Default Maximum
Indoor RH Setpoint
Disable/Low Reset
Source
0% 50% 100%
Indoor RH Setpoint
Enable/High Reset
Source
0% 60% 100%
Setpoint Screen #14 - Coil (Saturation)
Temperature Low & High Reset Limits
VCC-X Spts ID:#
Coil Temp Setpoint
Hi Rst Lmt: 45ºF
Lo Rst Lmt: 40ºF
Based on the Indoor Humidity Reset Range confi gured on the pre-
vious screen, the Coil Suction (Saturation) Temperature Setpoint
can be reset between the High Reset Limit (Hi Rst Lmt) and Low
Reset Limit (Lo Rst Lmt) confi gured on this screen during the
Dehumidifi cation Mode. See the description of this reset function
on the previous screen. If the High Reset Limit and the Low Reset
Limit are set at the same value, no Coil Temperature Reset will occur.
Description Minimum Default Maximum
Coil Temp Setpoint
High Reset Limit
35ºF
(1.7ºC)
45ºF
(7.2ºC)
70ºF
(21.1ºC)
Coil Temp Setpoint
Lo Reset Limit
35ºF
(1.7
ºC)
40ºF
(4.5ºC)
70ºF
(21.1ºC)
Setpoint Screen #15 - Static Pressure
Setpoint & Deadband
VCC-X Spts ID:#
Static Pressure
Setpoint: 1.50”
Deadband: 0.10”
For VAV units, a Supply Fan VFD or Bypass Damper Actuator is
used to maintain the Duct Static Pressure Setpoint. The Static Pres-
sure Output Signal varies to control to the Static Pressure Setpoint.
The Duct Static Pressure is maintained at this setpoint anytime the
Main Fan is running.
The Duct Static Setpoint accuracy is controlled by this value. No
Main Fan VFD changes are made if the static is within this range
of this setpoint.
Description Minimum Default Maximum
Static Pressure Spt 0.10″ WG 1.50″ WG 3.0″ WG
Deadband 0.01″ WG 0.10″ WG 0.50″ WG

AAON SS1063 Specifications

General

Brand	AAON
Model	SS1063
Category	Controller
Language	English