Hydromatic II Chiller Operation Manual

Page 8
Rev 1.07 ©2015 Micro Air Corp 10/26/2015
Operating parameters
Range
Default
Units
Purge air
0 to 3
0
Hours
Staging delay
15 to 200
60
Seconds
Cool Mode Set point
38 to 57
49
°F
3.3 to 13.9
9.4
°C
Heat Mode Set point
100 to 140
108
°F
37.8 to 60
42.2
°C
Hysteresis
1 to 3
2
°F
.6 to 1.7
1.1
°C
Differential
1 to 3
2
°F
.6 to 1.7
1.1
°C
Variable Speed Enable
5 to 90 and no
no
EL. Heat Transition
30 to 60, OFF, EHO
50
°F
-1.1 to 15.6, OFF, EHO
12.8
°C
Sea pump operation
Continuous or cycled
Continuous
Low voltage shutdown
75 to 100 and Off
Off
VAC
175 to 200 and Off
Off
VAC
VFD Fault Monitor
Yes or No
No
Use Flow For Freeze
Yes or No
No
Pump Flow SW Enable
Yes or No
YES
Purge air
Set this parameter for one to three hours to force the loop water pump on while purging
air from the system. The tempered water flow switch states will be ignored during this
time.
Staging delay
Staging delay adjusts the time delay between the starting of compressors and/or heaters to
prevent more than one turning on at the same time. It is the same for both heating and
cooling modes. Delay may be set from fifteen to two hundred seconds.
Cool mode set point
This parameter sets the loop water temperature set point in cool mode. If the loop water
attains this temperature, all compressors will be turned off. Adjustments can be made
from 38 to 57 degrees Fahrenheit (1.7 °C to 13.9 °C).
Heat mode set point
This parameter sets the loop water temperature set point in heat mode. When the loop
water attains this temperature, all compressors and/or electric heaters will be turned off.
Adjustments can be made from 100 to 140 degrees (37.8 °C to 60 °C).
Hysteresis
The temperature change required to shut down a stage. This parameter may be set for 1,
2, or 3 degrees Fahrenheit (.6, 1.1, or 1.7 °C)