York YLAA0041 Manual page 150

SECTION 7 – UNIT CONTROLS
TABLE 18 - PROGRAM KEY LIMITS AND DEFAULT (CONT'D)
PROGRAM VALUE
Control Mode
Hot Gas Bypass Valve Type
Unit Type Select
Operating Envelope
Sys 1,2 Comp. Sequence
Sys 1,2/Compressor 1-3 Operating Hours
(1 Inc./Dec. per entry position)
Sys 1,2/Compressor 1-3 Start Counters
(1 Inc./Dec. per entry position)
EEV Max Operating Pressure
(031-02577-004, EEV)
(5.0 Inc./Dec.)
Chilled Liquid Cooling Type*
* If the chilled liquid cooling type is modified, the suction pressure cutout is set to the default value.
Selecting Low Temperature
To enable the LOW TEMPERATURE operation, com-
plete the following steps:
1. Under SERVICE MODE, select GLYCOL.
2. To display the following screen, press PRO-
GRAM, ↓, ↑, ↑, ↓, ENTER in sequence.
S T A N D A R D T E M P E R A T U R E
G L Y C O L
L O W T E M P E R A T U R E
G L Y C O L
150
LOW LIMIT HIGH LIMIT
—
—
—
—
—
0
0
20.0 psig
(1.38 barg)
—
or
OPTIONS
(European Feature Set,
— R-410a/R-454B)
LEAVING or RETURN
(R-410a/R-454B Chiller or
Condensing Unit)
—
NONE, SYS 1,
BOTH SYSTEMS, or SYS 2
(R-410a/R-454B Chiller or
— Condensing Unit)
STANDARD or YCWL HP
(031-02755-004,
R-410a/R-454B)
—
DISABLE, STANDARD, or
EXTENDED
(031-02755-004)
— AUTO, COMP 1
COMP 2, or COMP 3
99999
99999
600.0 psig
(41.38 barg)
(Chillers and Heat Pump
— Cooling Only)
WATER or GLYCOL
3. To select the required option, use the ↑ and ↓ keys.
See Table 16 and Table 17 for the modified limits
when the low temperature glycol is enabled.
FORM 150.72-ICOM6
ISSUE DATE: 08/03/2022
DEFAULT
LEAVING
SYS 1
STANDARD
DISABLE
AUTO
—
—
150.0 psig
—
(10.34 barg)
WATER
JOHNSON CONTROLS
0
0