Heat Controller HSS manual CXM Control Start-up Operation, Variable Speed PSC Air Handler

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T h e Q u a l i t y L e a d e r i n C o n d i t i o n i n g A i r

R e s i d e n t i a l S p l i t - 6 0 H z R 2 2 & R 4 1 0 A

R e v. : 5 J u n e , 2 0 0 8

CXM Controls

CXM Control Start-up Operation

The control will not operate until all inputs and safety controls are checked for normal conditions. The compressor will have a 5 minute anti-short cycle delay at power-up. The first time after power-up that there is a call for compressor, the compressor will follow a 5 to 80 second random start delay. After the random start delay and anti-short cycle delay, the compressor relay will be energized. On all subsequent compressor calls, the random start delay is omitted.

Table 9b: Unit Operation

T-stat signal	HTS	HSS	HSS
T-stat signal	Variable Speed	Variable Speed	PSC Air Handler
	Air Handler	Air Handler
G	Fan only	Fan only	Fan only

G, Y or Y1	Stage 1 heating1	Stage 1 heating3	Stage 1 heating5
G, Y1, Y2	Stage 2 heating1	Stage 2 heating3	Stage 2 heating5
G, Y1, Y2, W	Stage 3 heating1	Stage 3 heating3	N/A
G, W	Emergency heat	Emergency heat	Emergency heat

G, Y or Y1, O	Stage 1 cooling2	Stage 1 cooling4	Cooling6
G, Y1, Y2, O	Stage 2 cooling2	Stage 2 cooling4	N/A

1Stage 1 = 1st stage compressor, 1st stage fan operation Stage 2 = 2nd stage compressor, 2nd stage fan operation Stage 3 = 2nd stage compressor, auxiliary electric heat, 2nd

or 3rd stage fan operation (depending on fan settings)

2Stage 1 = 1st stage compressor, 1st stage fan operation, reversing valve

Stage 2 = 2nd stage compressor, 2nd stage fan operation, reversing valve

3Stage 1 = compressor, 1st stage fan operation Stage 2 = compressor, 2nd stage fan operation

Stage 3 = compressor, auxiliary electric heat, 2nd or 3rd stage fan operation (depending on fan settings)

4Stage 1 = compressor, 1st stage fan operation, reversing valve Stage 2 = compressor, 2nd stage fan operation, reversing valve

5Stage 1 = compressor, fan

Stage 2 = compressor, auxiliary electric heat, fan

6Cooling = compressor, fan, reversing valve

w w w. h e a t c o n t o l l e r. c o m

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Contents Split Products This page left intentionally blank Model Nomenclature for Indoor Split Series Safety SafetyGeneral Information General Equipment SelectionIndoor Coil Selection HTS GeoMax GeoMax 2 HTS Air Handler Matches for ARI RatingsIndoor Coil Selection For HSS R-22 Units CFMAir Handler Selection Example Removing Existing Condensing Unit Where Applicable InstallationAir Handler Installation Indoor Compressor Section LocationHTS/HSS Installation GROUND-LOOP Heat Pump Applications Piping InstallationGround-Loop Heat Pump Applications Low Water Temperature Cutout Setting CXM ControlFlushing the Earth Loop AntifreezeFluid Volume gal liters per 100’ 30 meters Pipe Approximate Fluid Volume U.S. gal. L per 100 of PipeAntifreeze Percentages by Volume Compressor section must be sealed to prevent entryExpansion Tank and Pump Water Quality StandardsWater Control Valve Flow RegulationWater Well Connections Water Coil Low Temperature Limit SettingErosion and Clogging Water Quality StandardsRefrigeration Installation Line Set InstallationLineset Diameters and Charge Information Evacuation and Charging the Unit Add-On Heat Pump ApplicationsRefrigeration Installation Charging The System Evacuation Of The Lineset And CoilChecking Superheat and Subcooling Determining Superheat Example R-22 refrigerantDetermining Sub-Cooling Hot Water Generator Typical HWG Installation Indoor Compressor SectionHWG Water Piping Water Tank PreparationWater Tank Refill Initial Start-UpHot Water Generator Module Refrigeration Installation Electrical Line Voltage GeoMax 2 HTS Series Electrical DataHSS Series Electrical Data Electrical Power Wiring HWG Wiring Indoor Compressor Section Electrical HWG WiringLow Water Temperature Cutout Selection Thermostat ConnectionsAccessory Connections Electrical Low Voltage WiringTwo-stage HTS Units Taco ValveTwo-Stage HTS Piping Thermostat Installation CXM Controls Water coil low temperature FP1 The FP1 thermistor Safety Features CXM ControlAir coil low temperature FP2 The FP2 thermistor temperature Diagnostic FeaturesPage CXM Control Start-up Operation Variable Speed PSC Air HandlerY1, Y2, O Stage 2 cooling CXM Thermostat Details Nominal resistance at various temperaturesOperating Limits Unit Starting and Operating ConditionsStarting Conditions Unit OperationBefore Powering SYSTEM, please check the following Unit Start-up ProcedureUnit and System Checkout Test Mode Pins Unit Start-Up ProcedureWater Temperature Change Through Heat Exchanger Unit Operating ConditionsR-22 HSS Compressor Section Coax Water Pressure Drop GPM 22 HSS Typical Unit Operating Pressures and Temperatures Preventive Maintenance Troubleshooting CXM Process Flow Chart Functional Troubleshooting Functional Troubleshooting Performance Troubleshooting Troubleshooting Form S i d e n t i a l S p l i t 6 0 H z R 2 2 & R 4 1 0 a 08/08