Carrier GC Series Installation Instructions Manual

12Utility CurtailmentUtility curtailment is a voluntary energy saving program offeredthrough utility companies in some locations. Utility company willprovide the equipment that allows them to cut back demand onequipment during peak demand times. A qualified HVACtechnician should install the device to ensure system compatibility.Refer to Fig. 14 for typical wiring to the UPM.To set up curtailment with user interface, enter the service screens,Setup, then select Utility Curtailment.There will be 3 options to enable or disable the curtailment:1. Disabled: the utility curtailment, if wired into the UPM, willbe ignored.2. *Low Stage: when utility curtailment relay opens, the unitwill only operate at low--stage.3. *Off: when utility curtailment relay opens, the unit willshut down until the utility relay closes.* There will be a brief delay to cause the unit to stage or shutdown (approximately 0.40 to 1.20 minutes can be expected).UTILITY RELAY *UTILITY SIGNALOPEN RELAY* SUPPLIED BY UTILITY PROVIDERA150166Fig. 14 -- Utility CurtailmentEnergy TrackingThe Energy Tracking feature is available when unit is used with theInfinityR Touch Control and EvolutionR Connext Control.Energy Tracking has the ability to monitor and estimate the energyconsumption of the unit and displays the data on the wall control.Software version 14.0 or later is required for energy tracking.The Energy Tracking Kit (KHAGT0101KIT) includes a sensor andwiring harness. The kit must be installed on the geothermal unitfor energy tracking functionality. See kit for installationinstructions.NOTE: Version 14.0 or later software is required for energytracking.FACTORY INSTALLED OPTIONSA number of factory installed options are available on the GCSeries of Heat Pumps. The following details the purpose, functionand components of each option.Heat Recovery Package (HRP)(optional)The heat recovery package is a factory installed option on GCseries heat pumps. The HRP can be used to heat potable waterduring unit operation using waste heat from the compressordischarge gas. In some cases the HRP can provide most or all ofthe hot water requirements for a typical home.The HRP consists of three major components:1. Double wall, vented refrigerant to water heat exchanger2. Circulating pump3. Control circuitThe heat exchanger is rated for use with potable water and isacceptable for use as a domestic water heating device in mostbuilding codes.The pump circulates water between the domestic hot water tankand HRP heat exchanger in the Heat Pump. The control circuitensures that the HRP only operates when there is available heatfrom the compressor and when the water is within a safetemperature range of below 140_F. When the heat pumpcompressor operates, the HRP will monitor the temperature of thedischarge gas from the compressor. Once discharge gas is hotenough to provide useful heat to the domestic water tank, thecirculating pump will be enabled, drawing water from the tank,through the HRP heat exchanger and then depositing the heatedwater back into the tank.If the water temperature reaches 140_F, the circulating pump isdisabled to prevent over heating of the domestic water. The HRP isprovided with an on/off switch in case the end user desires that theHRP be inactivated (typically during the winter months whenspace heating is most important).CAUTION!UNIT DAMAGE AND/OR OPERATION HAZARDFailure to follow this caution may result in unit damageand/or improper equipment operation.If heat recovery unit is installed in an area where freezingmay occur, the unit must be drained during winter monthsto prevent heat exchanger damage. Heat exchangerruptures that occur due to freezing will void the heatrecovery package warranty along with the heat pumpwarranty.NOTE: If factory installed HRP is not utilized in the field, it isrecommended to disconnect the HRP switch.