Camus Hydronics DFH/W1100, Installation, Operation And Service Manual

Page: 52 / 90

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6.7 VARIABLE FREQUENCY DRIVE
The variable frequency drive (VFD) has a factory set
security code which has to be entered before any
adjustments can be made. The VFD has 50 parameters,
which can be adjusted. At present only the following are
pertinent:
Table 13: Variable Frequency Drive Parameters
Parameter
#
Function Settings
1 High/Low Voltage
Input Voltage 120, 220-
240, 460-480
01
02
2 Carrier Frequency 03
4 Stop Method 03
5 Standard Speed Source 04
19 Acceleration Time 120 sec
20 Deceleration Time 60 sec
28 Fixed Boost 1.0
36 Preset Speed 29
38 Skip Bandwidth 3.0
45 Speed at Minimum
Signal Consult factory test
sticker
46 Speed at Maximum
Signal Consult factory test
sticker
50 Fault History View Only
51 thru 58 Miscellaneous View Only
6.8 FROST PROTECTION
The DynaFlame® with SOLA control panel is equipped with
a heat exchanger frost protection algorithm where if the
boiler inlet or outlet temperature sensors drop below 41
o
F
(5
o
C) the boiler pump is enabled. If the temperature
continues to drop to 38
o
F (3.3
o
C) the burner will be fired to
bring the inlet and outlet temperatures to 50
o
F (10
o
C) to
prevent freezing of the heat exchanger.