Bard WG Series Installation Instructions Manual

Also see for WG Series: Installation instructions Installation instructions Installation instructions Installation instructions Installation instructions

Bard WG Series Installation Instructions Manual Manual pdf 32 page image

Manual 2100-587JPage 32 of 5924. FILTERSA 2" thick throwaway filter is supplied with each unit.This filter is installed by removing the filter accesspanel (see Figure 13).Replacement filters are available through the localdealer.25. COMPRESSOR CONTROL MODULEThe compressor control module (CCM) is standard onthe models covered by this manual.FeaturesDelay-on-Make TimerShort Cycle Protection/Delay-on-BreakHigh Pressure DetectionHPC Status LEDTest ModeBrownout Protection with AdjustmentDelay-on-Make TimerA delay-on-make timer is included to be able to delaystartup of the compressor. This is desired when morethan one unit is on a structure so that all of the unitsdo not start at the same time which could happenafter a power loss or building shutdown. The delay-on-make time period is 2 minutes plus 10% of thedelay-on-break time period. To ensure that all of theFIGURE 13Access Internal Filterunits do not start at the same time, adjust the delay-on-break timer on each unit to a slightly differentdelay time.Short Cycle Protection/Delay-on-BreakAn anti-short cycle timer is included to prevent shortcycling the compressor. This is adjustable from 30seconds to 5 minutes via the adjustment knob. Oncea compressor call is lost, the time period must expirebefore a new call will be initiated.High Pressure DetectionHigh pressure switch monitoring allows for a lockoutcondition in a situation where the switch is open. Ifthe high pressure switch opens, the CCM will de-energize the compressor. If the switch closes again,it will then restart the compressor after the delay-on-break setting has expired on the device. If theswitch trips again during the same thermostat call,the compressor will be de-energized and the alarmterminal will be energized indicating an alarm. Thered LED will light and stay on until power is cycledto the control or a loss of voltage is present at Yterminal for more than ½ second.Test ModeBy rapidly rotating the potentiometer (POT) clockwise(see Figure 14), all timing functions will be removedfor testing.MIS-3237FILTERFILTERSERVICEDOOR