Closing this contact enables the 4-20 mA/
0-10 VDC input on channel 1
Channel 1:
4-20mA/0-10VDC
Channel 2:
4-20mA/0-10VDC
(+)
24 VDC
(+)
(-)
(-)
24 VDC Return
This Method allows direct modulation of the boiler based on a 4-20 mA control signal. A control
capable of transmitting a 4-20mA/0-10 VDC control signal for the purpose of modulating a boiler
and to control a common system temperature must be used with this method.
NOTE: If using a 0-10 VDC signal multiply any references to current in the manual by .5. Example:
5ma * .5 = 2.5 VDC
This Method allows direct modulation of the boiler based on a 4-20 mA control signal. A control
capable of transmitting a 4-20mA/0-10 VDC control signal for the purpose of modulating a boiler
and to control a common system temperature must be used with this method.
NOTE: If using a 0-10 VDC signal multiply any references to current in the manual by .5. Example:
5ma * .5 = 2.5 VDC
S6 along with the
SETUP:ADVANCED:4-20mA INPUT
menu configures the channel for
operation.
S6 switch 1 DOWN: 4-20mA channel 1
S6 switch 1 UP: 0-10VDC channel 1
S6 switch 2 DOWN: 4-20mA channel 2
S6 switch 2 UP: 0-10VDC channel 2
1
2
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