Function Test Of The Trigger Unit Int69 G; Oil Sump Heater (Accessories); Capacity Regulator (Accessories) - Danfoss BOCK UL-HGX44e Operating Manual

5 | Electrical connection

5.9 Function test of the trigger unit INT69 G

Before commissioning, after troubleshooting or making changes to the control power circuit, check
the functionality of the trigger unit. Perform this check using a continuity tester or gauge.
Gage state
Deactivated state
INT69 G switch-on
Remove PTC connector
Insert PTC connector
Reset after mains on

5.10 Oil sump heater (accessories)

When the compressor is at a standstill, refrigerant diffuses into the lubricating oil of the compressors
housing, depending on pressure and ambient temperature. This reduces the lubricating capacity of
the oil. When the compressor starts up, the refrigerant contained in the oil evaporates out through the
reduction in pressure. The consequences can be foaming and migration of the oil, causing oil shocks
under certain circumstances.
Operation: The oil sump heater operates when the compressor is at a standstill. When the compres-
sor starts up, the oil sump heater switches off again automatically.
Connection: The oil sump heater must be connected via an auxiliary contact (or parallel wired auxil-
iary contact) of the compressor contactor to a separate electric circuit.
El. data: 115 V AC 60 Hz, 160 W.

5.11 Capacity regulator (accessories)

© Danfoss | Climate Solutions | 2023.07
Relay position
11-12
11-14
11-12
11-12
11-14
Connection to the current path of the safety control chain is not
permitted.
A fuse (max. 3xlB in accordance with IEC 60127-2-1) corresponding
to the rated current must be placed in front of every magnetic
coil of the capacity regulator as short-circuit protection. The ra-
ted voltage of the fuse must be equal to or greater than the rated
voltage of the magnetic coil. The ability of the fuses to switch off
must be greater than or equal to the maximum assumable short-
circuit current at the installation location.
Relay position INT69 G
B2 12 14 11
Fig. 14
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