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Fig. 40 — Aquastat for Waterside Economizer and
Boilerless Control
GROUP
PARAMETER NUMBER
NUMBER
10
12
20
21
23
28
30
Table 8 — Single Speed VFD Programming Parameters
10.24
10.27
10.30
12.16
12.17
12.18
12.19
12.20
12.27
12.28
12.26
12.30
20.01
20.06
20.21
20.40
20.41
20.42
21.19
21.03
28.72
28.73
28.11
28.15
28.22
28.26
30.11
30.12
30.13
30.14
VFD Field Programming (50HQP Only)
When horizontal units are ordered with either the single speed
VFD option or two speed SAV VFD option the VFD will need to
be programmed in the field. See Tables 8 and 9 for the factory
default VFD programming parameters for both options.
DESCRIPTION
RO1 source
RO2 source
RO3 source
AI1 Filter Time
AI1 min
AI1 max
AI1 scaled at AI1 min
AI1 scaled at AI1 max
AI2 min
AI2 max
AI-2 Filter Time
AI2 scaled at AI2 max
Ext1 commands
Ext2 commands
Direction
Run permissive
Start interlock 1
Start interlock 2
Scalar start mode
Stop mode
Freq acceleration time 1
Freq deceleration time 1
Ext1 frequency ref1
Ext2 frequency ref1
Constant frequency sel1
Constant frequency 1
Minimum speed
Maximum speed
Minimum frequency
Maximum frequency
42
a
VALUE
Damper control
Running
Fault (-1)
0.100 s
0 V
10 V
0.000
60.000
4.000 mA
20.000 mA
0.100 s
50.000
In1 Start
Not selected
Forward
DI1
DI4
Not used
Automatic
Coast
30.000 s
30.000 s
AI1 scaled
Zero
DI3
60Hz
0.00 rpm
1800 rpm
0.00 Hz
60.00 Hz
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