OMM 1008-1
49
WATER Setpoints
Figure 25, WATER Setpoint Screen
Table 23, WATER Setpoint Settings
Description
N0.
Default
Range
Pass-
word
Comments
Max Reset Delta-T
7
0.0
°
F
0.0 to 20.0
°
F
M
Set the maximum reset that can occur, in
degrees F if LWT reset is selected or max reset
at 20 mA input if 4-20 mA is selected in SP7
Start Reset Delta-T
6
10. 0
°
F
0.0 to 20.0
°
F
M
Sets the evap delta-T above which Return reset
begins.
LWT Reset Type
5
NONE
NONE, RETURN,
4-20mA
M
Select reset type, NONE for none, RETURN for
resetting chilled water based on the entering
water, or 4-20 mA for external analog signal
Stage Delta-T
4
1.0
0.5 to 5
°
F
M
Sets the temperature the leaving water must be
above setpoint for next compressor to start.
Startup Delta-T
3
3.0
°
F
0.0 to 10.0
°
F
M
Degrees above setpoint for compressor to start.
Shutdown Delta-T
2
3.0
°
F
0.0 to 3.0
°
F
M
Degrees below setpoint for compressor to stop.
Cool LWT
1
44. 0
°
F
40.0 to 80.0
°
F
M
Evaporator LWT setpoint in COOL mode
