Carrier 30GTN Service And Troubleshooting Manual page 38

Table 16 — Example of Temperature Reset (Outdoor Air) Configuration
SUB-MODE KEYPAD ENTRY
RSET
ENTER
ENTER
ENTER
ENTER
ESCAPE
ENTER
ENTER
ENTER
ESCAPE
ENTER
ENTER
ENTER
ESCAPE
ENTER
ENTER
ENTER
ESCAPE
NOTE: The example below shows how to configure the chiller for temperature reset by an accessory
outdoor-air temperature sensor. The chiller will be configured for a full reset of 10 degrees at 50 F and
no reset at 75 F.
ITEM DISPLAY
CRST 0
0
0
2
2
CRST 2
CRT1 125
125
125
75
75
CRT1 75
CRT2 0
0
0
50
50
CRT2 50
DGRC 0
0
0
10
10
DGRC 10
38
ITEM EXPANSION
COOLING RESET TYPE
COMMENT
0 = No reset
1 = 4 to 20 mA input
2 = Outdoor Air Temp
3 = Return Fluid
4 = Space Temperature
Scrolling stops
Value flashes
Select 2
Change accepted
Item/Value/Units scrolls again
Range: 0 to 125 F
Scrolling stops
Value flashes
Select 75
Change accepted
Item/Value/Units scrolls again
Range: 0 to 125 F
Scrolling stops
Value flashes
Select 50
Change accepted
Item/Value/Units scrolls again
Range: −30 to 30 F
Scrolling stops
Value flashes
Select 10
Change accepted
Item/Value/Units scrolls again