Bard W24G2-A Installation Instructions Manual

Bard W24G2-A Installation Instructions Manual Manual pdf 21 page image

Manual 2100-590APage 21 of 67NOTE: The voltage should be measured at the fieldpower connection point in the unit and whilethe unit is operating at full load (maximumamperage operating condition).PAT EGNAR042 602–352802 781–02217. THERMOSTATS16. WIRING – LOW VOLTAGE WIRINGLow Voltage ConnectionThese units use a 24-volt AC low voltage circuit.The “R” terminal is the hot terminal and the “C”terminal is grounded.“G” terminal is the fan input.“Y1” terminal is the compressor input.“R” terminal is 24 VAC hot.“C” terminal is 24 VAC grounded.“A” terminal is the ventilation input. This terminalenergizes any factory or field installed vent option.“W1” terminal is the heat input.230/208 VOLT UNITSAll models are equipped with dual primary voltagetransformers. All equipment leaves the factory wiredon 240V tap. For 208V operation, reconnect from240V to 208V tap. The acceptable operating voltagerange for the 240V and 208V taps are:460 VOLT UNITSAll models are equipped with single primary voltagetransformers and no rewiring is required.TABLE 3THERMOSTAT WIRE SIZEremrofsnarTAV ALF eguaGeriWmumixaMecnatsiDteeFnI55 3.2 eguag02eguag81eguag61eguag41eguag215406001061052FIGURE 10INSTALLATION OF FLEXIBLE CONDUITTABLE 4WALL THERMOSTATtatsomrehT serutaeFetanimoderP750-30480401D0113HTloocegats1,taehegats1otua-no:naFlooc-ffo-taeh:metsySelbammargorP-noNcinortcelE850-30481511D0225HTtaehegats2,loocegats2elbammargorP-noNcinortcelElanoitnevnoCroPHrevoegnahclaunaMrootuA060-3048544-0211taehegats3;loocegats3cinortcelEelbammargorP-noN/elbammargorPlanoitnevnoCroPHrevoegnahclaunaMrootuADirect Digital Controls (DDC)For total and proper control using DDC, a total of 5controlled outputs are required (4 if no ventilation isinstalled).LOW VOLTAGE CONNECTIONS FOR DDC CONTROLFan Only Energize GCooling Mode Energize G, Y1Heating Mode Energize W1Ventilation Energize G, A