Patterson-Kelley MACH-05 manual Terminal Number, Label, Description, Do Not Energize

MACH® Series Gas-Fired Boiler Parts and Technical Support

6.1.1a Terminal Block Assignments – Low Voltage Circuit (TB1)

Terminal Number	Label	Description
1	HEAT REQUEST	Boiler Enable, Contact Closure.
		DO NOT ENERGIZE.
2	HEAT REQUEST
3	INTERLOCK JUMPER	External Limit (auto reset), Contact Closure.
		DO NOT ENERGIZE.
4	INTERLOCK JUMPER
5	DHW TEMP. SENSOR
6	OUTDOOR TEMP SENSOR	Thermistor - factory option.
7	CIRC. PMP PWM SIGNAL	Pulse Width Modulation.
8	COMMON	Common to be used with 5, 6, 7, and 10 when used.
9	COMMON	Common to be used with 5, 6, 7, and 10 when used.
10	O-10 V ANAL. INPUT CONTROL	Remote control of firing rate or setpoint.
11	+10 VOLT	Regulated 10V output.
12	COM 1	RS-485 port A.
13	COM 2	RS-485 port B.
14	OUTSIDE TEMP W/ FILTER	Thermistor - factory option.
15	OUTSIDE TEMP W/ FILTER	Thermistor - factory option.
16	SPARE
17	SPARE

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