York YPAL 050 Manual Do Utilizador

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JOHNSON CONTROLS
FORM 100.50-NOM6 (1207)
Sequence of Operation
  If heating mode is selected the Simplicity Elite 
control will also compare the current outdoor 
temperature to the outdoor temperature recorded 
during the previous start up period.
–  If the current outdoor air temperature is 10.0° 
F or more below the previous day the Simplic-
ity Elite control will add 5inutes to the above 
calculated recovery time for every 10.0° F 
difference.
  The outdoor damper will be kept closed during 
this period unless it is being used to meet the oc-
cupied cooling space temperature requirement.
  Even if the space temperature satisfi es the “CV 
OCCUPIED COOLING” and “CV OCCUPIED 
HEATING”
 set points the unit will not switch 
to the occupied mode until the calculated warm 
up / cool down time has expired.  However, the 
supply fan will remain energized during this 
time.  If the space temperature rises above the 
“CV OCCUPIED COOLING”, or below the “CV 
OCCUPIED HEATING”
 set points during this 
time the cooling or heating will cycle back on.
MORNING WARM-UP
This feature can be used to energize the heating section 
of the unit to bring the temperature of the space up to 
conditions prior to the start of the occupied period.  
The following parameters must be programmed in order 
to use this feature:
“MORNING WARM-UP ENABLE” – must be enabled 
using Parameter 28 under the PROGRAM key of the 
Simplicity Elite control board or under the HEATING 
SETUP tab of the Simplicity PC software package.
“MORNING WARM-UP/VAV RETURN AIR TEMP 
SETPOINT”
  - must be programmed using Parameter 
29 under the PROGRAM key of the Simplicity Elite 
control board or under the HEATING SETUP tab of 
the Simplicity PC software package.
“HEATING MODE ENABLED FOR OPERATION” 
– must be enabled using Parameter 54 under the 
PROGRAM key of the Simplicity Elite control board 
or under the HEATING SETUP tab of the Simplicity 
PC software package.
The following criteria must be met for Morning Warm-
up operation:
  Morning Warm-up will only work on a VAV 
system.
  Morning Warm-up will only work when the in-
ternal scheduling feature is used.  It will not work 
using a hard wired or communicated Occupied 
command.
  Morning Warm-up will only function during the 
fi rst occupied period of each day.
Sequence of Operation
  One hour before the beginning of the occupied 
period the Simplicity Elite control will energize 
the supply fan circuit.
  The Simplicity Elite control will keep the econo-
mizer damper closed.
  After 5 minutes of supply fan operation the Sim-
plicity Elite control will compare the return air 
temperature to the “MORNING WARM-UP/VAV 
RETURN AIR TEMP SETPOINT”
.
  If the return air temperature is 2.0° F or more 
below the “MORNING WARM-UP/VAV RETURN 
AIR TEMP SETPOINT”
 the Simplicity Elite 
control will energize all the available heat.
  If the return air temperature is not 2.0° F or 
more below the “MORNING WARM-UP/VAV 
RETURN AIR TEMP SETPOINT”
 the Simplicity 
Elite control will continue supply fan operation 
while continuing to monitor the return air tem-
perature.
  When the return air temperature is equal to or 
above the “MORNING WARM-UP/VAV RE-
TURN AIR TEMP SETPOINT”
 heating operation 
will be de-energized.
  During this time the heat will cycle on and off 
based on the comparison of the return air tem-
perature to the “MORNING WARM-UP/VAV 
RETURN AIR TEMP SETPOINT”.
  After one hour of operation the Simplicity Elite 
control will go into the Occupied mode and open 
the economize to the minimum position.
  Heating operation will continue until the return 
air temperature is equal to or above the “MORN-
ING WARM-UP/VAV RETURN AIR TEMP 
SETPOINT”.