Page 55
M ain fan will not op erate
When the burner is on
Check for 400v three
Fault elsewhere
p hase sup p ly at main
terminals
NO
NO
Check for 230 v
Press in white button of
Fault
at terminals 1 to N
Fan/Limit thermostat
elsewhere
and retest
YES
YES
Check the setting of the
Check calibration of the
fan thermostat as in
fan thermostat. Dial should
section 5.1
YES
indicate the ap p roximate
temp erature of the
NO
samp led air
Fan thermostat faulty .
Rep lace & reset.
NO
Check for 230v at coil
Reset thermal overload
terminals of fan contactor
and check setting
See Note 1
NO
NO
Fan now runs ?
Check for 400v three p hase
Contactor or overload
at inp ut and outp ut of
faulty .
contactor
Rep lace as necessary
YES
YES
Check and test wiring to
motor
M otor faulty .
Rep lace comp lete fan unit.
YES
M otor stop s after
Thermal overload in motor
running for some time
faulty
Rep lace comp lete fan unit
NO
M OT OR RUNNING
The fan on the Dual-Air unit is operated from
several control points
See controls table in section 6.
Dependant upon which control is currently
calling for fan run then the appropriate relay
should be checked and tested.
The following algorithm shows the principles
involved for checking the fan & limit thermostat.
8.5
Fault Finding for Main Fan
Содержание Dualair DA260G Series
Страница 2: ...Details of condense drain for cooling coil ...
Страница 8: ...Page 6 Fig 2 1 DualAir 300 Module Dimensions Section 2 Technical Data FRONT VIEW REAR VIEW SIDE VIEW ...
Страница 9: ...Page 7 Fig 2 2 DualAir 380 Module Dimensions FRONT VIEW REAR VIEW SIDE VIEW ...
Страница 33: ...Page 31 Fig 5 1 Wiring for DualAir Units On Off Burner 230v Controls Section 5 Wiring Diagrams ...
Страница 34: ...Page 32 Fig 5 2 Wiring for DualAir Units On Off Burner 24v Controls ...
Страница 35: ...Page 33 Fig 5 3 Wiring for DualAir Units Hi Low Burner 230v Controls ...
Страница 36: ...Page 34 Fig 5 4 Wiring for DualAir Units Hi Low Burner 24v Controls ...
Страница 37: ...Page 35 Fig 5 6 Wiring for DualAir Units BMS Burner Modulation 230v Controls ...
Страница 38: ...Page 36 Fig 5 7 Wiring for DualAir Units BMS Burner Modulation 24v Controls ...
Страница 39: ...Page 37 Fig 5 7 Wiring for DualAir Units Full Burner Modulation 230v Controls ...
Страница 40: ...Page 38 Fig 5 8 Wiring for DualAir Units Full Burner Modulation 24v Controls ...
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