Camus Hydronics Avenger Series - Variable Frequency Drive; Frost Protection

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6.6 VARIABLE FREQUENCY DRIVE
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
100
Sets terminal strip as start/stop control
01
101
Sets 4-20 mA as standard reference source
02
102
Min Freq.
Refer to factory test sticker/report
103
Max Freq.
Refer to factory test sticker/report
104
Acceleration time
Depending on the model: preset at factory
105
Deceleration time
Depending on the model: preset at factory
111
Stop method – will use value in Parameter #105
02
150
Follows 0-10Vdc output freq.
01
160
Speed at minimum signal
Refer to factory test sticker/report
161
Speed at maximum signal
Refer to factory test sticker/report
181
Skip Frequency 1
Refer to factory test report
184
Skip Frequency Bandwidth
Refer to factory test report
1) To enter/exit parameter menu use M
2) Use and to arrive desired parameter and adjust value
2) If stop activated in run condition, must reset power to clear stop
6.7 FROST PROTECTION
The Avenger is equipped with a heat exchanger frost protection algorithm where if the boiler inlet or outlet temperature sensors drop
below 41°F (5°C) the boiler pump is enabled. If the temperature continues to drop to 38°F (3.3°C) the burner will be fired to bring the inlet
and outlet temperatures to 50°F (10°C) to prevent freezing of the heat exchanger.