Carrier AQUASNAP 30RA/RH Operation & Maintenance Instructions Manual

Carrier AQUASNAP 30RA/RH Operation & Maintenance Instructions Manual Manual pdf 8 page image

83.6.2 - Volt-free contact on/off/cooling/heating withoutmultiplexingIf the automatic heating/cooling changeover function is notselected (see sections 4.3.11.3, 5.1 and 5.2) the operation ofcontacts 1 and 2 is as follows:OFF ON cooling ON heatingContact 1 Open Closed ClosedContact 2 - Open ClosedContact status not significant3.6.3 - Volt-free contact on/off/cooling/heating withmultiplexingIf the automatic heating/cooling changeover function isselected (see sections 4.3.11.3, 5.1 and 5.2) the operation ofcontacts 1 and 2 is multiplexed:OFF ON cooling ON heating ON autoContact 1 Open Closed Closed OpenContact 2 Open Open Closed ClosedNOTE: The automatic changeover function (ON auto) selectsthe cooling or heating mode based on the outdoortemperature (see section 5.2).3.6.4 - Demand limit or setpoint volt-free contact for single-circuit unitsOn single-circuit units contact 3 determines the selection ofdemand limit or setpoint, based on the configuration (see UserConfiguration 1 menu).Demand limit selection Setpoint selection100% Limit 1 Setpoint 1 Setpoint 2(no limit)Contact 3 Open Closed Open Closed3.6.5 - Demand limit volt-free contact for dual-circuit unitsOn dual-circuit units the operation of the demand limitselection contacts is multiplexed. The demand limit setpoints areadjustable in the setpoint menu (see section 4.3.8).100% Limit 1 Limit 2 Limit 3(no limit)Contact 3 Open Closed Open ClosedContact 4 Open Open Closed Closed3.6.6 - Water setpoint selection volt-free contact withmultiplexing for dual-circuit unitsOn dual-circuit units the operation of the cold water or hotwater setpoint selection contacts is multiplexed. The set-pointsare adjustable in the setpoint menu (see section 4.3.8). Automeans that the active setpoint is determined by the setpointschedule (see section 5.6.1).Cooling modeSetpoint 1 Setpoint 2 Setpoint 3 AutoContact 5 Open Open Closed ClosedContact 6 Open Closed Open ClosedHeating modeSetpoint 1 Setpoint 2 Setpoint 3 AutoContact 5 Open Open Closed ClosedContact 6 Open Closed Open Closed