York YLUA0078 User Manual

JOHNSON CONTROLS
154
FORM 150.73-NM1
ISSUE DATE: 09/04/2020
SECTION 10 – MAINTENANCE
ISN CONTROL
Received Data (Control Data)
The unit receives 8 data values from the ISN. The first
4 are analog values and the last 4 are digital values.
These 8 data values are used as control parameters
when in REMOTE mode. When the unit is in LOCAL
mode, these 8 values are ignored. If the unit receives
no valid ISN transmission for 5 minutes, it will revert
back to all local control values. Table 39 on page 154
lists the 5 control parameters. These values are found
under feature 54 on the ISN.
TABLE 39 - ISN RECEIVED DATA
ISN
PAGE
CONTROL DATA
P03 Setpoint Cooling
P04 Load Limit Stage (0,1, 2)
P05 —
P06 —
P07
Start/Stop Command
(0 = Stop, 1 = Run)
P08 —
P09 —
P10
History Bu󰀨er Request
(0 = Current Data, 1 = Last History Data)
Transmitted Data
After receiving a valid transmission from the ISN, the
unit will transmit either operational data or history buf-
fer data depending on the “History Buffer Request” on
ISN PAGE 10. Data must be transmitted for every ISN
page under feature 54. If there is no value to be sent
to a particular page, a zero will be sent. Table 40 on
page 154 show the data values and page listings for
this unit.
ISN PAGES listed are ENG PAGE REF-
ERENCES and must be decoded to the
corresponding PAGE REF point map re-
lated to the communications protocol type
utilized. The latest point map information
is listed on the Johnson Controls Group
Equipment Integration website.
TABLE 40 - ISN TRANSMITTED DATA
ISN
PAGE
CHARACTER TYPE DATA
P11 8-11 Analog
Leaving Chilled
Liquid Temp.
P12 12-15 Analog
Return Chilled
Liquid Temp.
P13 16-19 Analog ----
P14 20-23 Analog ----
P15 24-27 Analog
SYS 1 Suction Temp.
(EEV Only)
P16 28-31 Analog Ambient Air Temp.
P17 32-35 Analog
SYS 1 Suction
Superheat
(EEV Only)
P18 36-39 Analog
SYS 1 Run Time
(Seconds)
P19 40-43 Analog
SYS 1 Suction
Pressure
P20 44-47 Analog
SYS 1 Discharge
Pressure
P21 48-51 Analog ----
P22 52-55 Analog ----
P23 56-59 Analog
SYS 1 EEV Output %
(EEV Only)
P24 60-63 Analog
SYS 1
Anti-Recycle Timer
P25 64-67 Analog
Anti-Coincidence
Timer
P26 68-71 Analog
SYS 2 Suction Temp.
(EEV Only)
P27 72-75 Analog
SYS 2 Run Time
(Seconds)
P28 76-79 Analog
SYS 2
Suction Pressure
P29 80-83 Analog
SYS 2
Discharge Pressure
P30 84-87 Analog ----
P31 88-91 Analog ----
P32 92-95 Analog
SYS 2
Suction Superheat
(EEV Only)
P33 96-99 Analog
SYS 2
Anti-Recycle Timer
P34 100-103 Analog
SYS 2 EEV Output %
(EEV Only)
P35 104-107 Analog # of Compressors
P36 108 Digital SYS 1 Alarm

York YLUA0078 Specifications

General

Brand	York
Model	YLUA0078
Category	Heat Pump
Language	English