20
ED 15117
Typical Application: Minimum Integration
This section gives you the basic information required for integrating the Magnitude Chiller Unit
Controller to a BAS and outlines a procedure to set up the unit for network control.
Set up the Unit Controller for Network Control
From the unit controller OITS panel, follow the steps below:
1.
Set the Control Source on the SET/UNIT screen to USER.
2.
Change the BAS Network Protocol default to the appropriate BAS Protocol on the SET/BAS
screen.
3.
Verify with the chiller/control company technician that the chiller is operational on the BAS.
4.
Set the Control Source on the SET/UNIT screen to BAS.
Display Important Data Points
Typical workstation displays of Magnitude Chiller Unit Controller attributes include the following
significant data points (page number of detailed description in parenthesis). Each data point is
identified with a number that also identifies it in the respective BACnet or L
ON
W
ORKS
Protocol Point
Summary tables. These data points are also shaded in the comprehensive tables so that you can
distinguish them from the rest of the data points in the table. References in the text of this section also
identify these data points with a number and shading.
Table 3. Significant Data Points
No
.
Configuratio
n
No
.
Temperatures
No
.
Setpoints
No
.
Alarms
1
Evaporator Entering
Water Temperature (50)
9
Cool Setpoint – Network
(49)
11
Alarm Digital Output
(29)
2
Chiller Mode Set-point
(36)
6
Evaporator Leaving
Water Temperature (51)
10
Capacity Limit Setpoint
– Network (30)
12
Clear Alarm Network
(38)
3
Actual Capacity (28) 7
Condenser Entering
Water Temperature (45)
4
Chiller Enable Setpoint
(32)
8
Condenser Leaving
Water Temperature (46)
You can display any number of additional data points based on job requirements or individual
preference. See Protocol Point Summary section (Tables 4-7) for a complete list of all L
ON
W
ORKS
variables or BACnet points available to the network. For a detailed description of all available data
points, see the Detailed Data Point Information section.
