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ECONOMIZER
SEQUENCE OF OPERATION
POWER:
1.
Terminal strip TB1 found in the main control box energizes the economizer components with 24VAC.
OPERATION:
2.
Enthalpy sensor A7 and A62 (if differential enthalpy is used) communicates to the economizer control
module A6 when to power the damper motor B7.
3.
Economizer control module A6 supplies B7 with 0 − 10 VDC to control the positioning of economizer.
4.
The damper actuator provides 2 to 10 VDC position feedback.
Summary of Contents for KHA SERIES
Page 41: ...Page 41 KHA036 048 060 Y Voltage 1 2 5 9 3 11 6 7 8 4 4 5 5 8 9 9 10...
Page 42: ...Page 42 KHA036 048 060 G J Voltage 1 2 5 9 3 11 6 7 8 4 4 5 5 7 9 9 10 11...
Page 46: ...Page 46 T1EH 7 5 10 15 22 5 kW P VOLTAGE 1 3 4 5 6 7 2 4 4 4 7 7 7...
Page 47: ...Page 47 T1EHA 7 5 15 22 5kW Y VOLTAGE KHA SERIES UNITS 1 3 4 5 6 7 2 4 7...
Page 48: ...Page 48 T1EHA 7 5 15 22 5kW G J VOLTAGE KHA SERIES UNITS 1 3 4 5 6 7 2 4 7...
