Daikin Pathfinder AWV Installation, Operation And Maintenance Manual page 67

# Fans 4 6
1 201 201
2 202 202
Fan
3 203 203
Output
4
204 204,206
#
5
- 205
6 - -
Fan Outputs Per Fan Stage
The table below shows which digital outputs are energized for each stage.
Table 58: Digital Outputs Energized for Each Stage
# Fans On
4
Circuit
0 0
1 1
2 1,3
3 1,2,3
4 1,2,3,4
5 -
6 -
7 -
Fan
8 -
Stage
9 -
10 -
11 -
12 -
13 -
14 -
15 -
16 -
Staging Concept
As long as the condenser saturated temperature is within the band defined by the active stage up deadband and active stage down
deadband, the fan stage will not change. When saturated condenser temperature is outside of the deadbands, error is accumulated
and will cause a change in the fan stage.
Figure 72: Fan Staging Conditions
Error
Error
Limit
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Circuit 2
8 10
201 201 201
202 202 202
203 203,205 203,205
204 204,206 204,206
105,107 207,209 207,209,211
106,108 208,210 208,210,212
6 8
0 0
1 1
1,3 1,3
1,3,5 1,5
1,2,3,5 1,3,5
1,3,4,5 1,2,3,5
1,2,3,4,5 1,2,3,4,5
- 1,2,3,5,6
- 1,2,3,4,5,6 1,2,3,4,5
- - 1,3,4,5,6
- - 1,2,3,4,5,6
- -
- -
- -
- -
- -
- -
If this error accumulation is greater than 11°C, Fan stage up.
If this error accumulation is greater than 3.0°C Fan stage down.
Target
12 14
201
202
203,205
204,206
207,209,211,213
208,210,212,214
10 12
0 0
1 1
1,2 1,2
1,3 1,3
1,2,3 1,5
1,3,5 1,2,5
1,2,3,5 1,3,5
1,3,4,5 1,2,3,5
1,3,4,5
1,2,3,4,5
1,2,3,5,6 1,2,3,4,5
- 1,3,4,5,6
- 1,2,3,4,5,6 1,2,3,5,6
- - 1,3,4,5,6
- - 1,2,3,4,5,6
- -
- -
(Target) + (stage up deadband)
Saturated Condenser
Temperature Target
(Target) - (stage down deadband)
Condenser saturated temperature
67 IOM 1242-8 • PATHFINDER
Circuit Functions
16
-
-
-
-
-
-
14 16
0 0
1 1
1,2 1,2
1,3 1,3
1,2,3 1,2,3
1,5 1,5
1,2,5 1,2,5
1,3,5 1,3,5
1,2,3,5 1,2,3,5
1,3,4,5 1,4,5
1,2,4,5
1,3,5,6 1,3,4,5
1,2,3,4,5
1,4,5,6
1,2,4,5,6
- 1,3,4,5,6
- 1,2,3,4,5,6
MODEL AWV CHILLERS
®