Heat Controller HSS manual GROUND-LOOP Heat Pump Applications, Piping Installation

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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

Installation

GROUND-LOOP HEAT PUMP APPLICATIONS

x CAUTION! x

CAUTION! The following instructions represent industry accepted installation practices for closed loop earth coupled heat pump systems. Instructions are provided to assist the contractor in installing trouble free ground loops. These instructions are recommendations only. State/provincial and local codes MUST be followed and installation MUST conform to ALL applicable codes. It is the responsibility of the installing contractor to determine and comply with ALL applicable codes and regulations.

Pre-Installation

Prior to installation, locate and mark all existing underground utilities, piping, etc. Install loops for new construction before sidewalks, patios, driveways, and other construction has begun. During construction, accurately mark all ground loop piping on the plot plan as an aid in avoiding potential future damage to the installation.

Piping Installation

The typical closed loop ground source system is shown in Figures 7 and 8. All earth loop piping materials should be limited to polyethylene fusion only for in-ground sections of the loop. Galvanized or steel fittings should not be used at any time due to their tendency to corrode. All plastic to metal threaded fittings should be avoided due to their potential to leak in earth coupled applications. A flanged fitting should be substituted. P/T plugs should be used so that flow can be measured using the pressure drop of the unit heat exchanger.

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Contents Split Products This page left intentionally blank Model Nomenclature for Indoor Split Series Safety SafetyGeneral Information GeoMax 2 HTS Air Handler Matches for ARI Ratings Equipment SelectionGeneral Indoor Coil Selection HTS GeoMaxIndoor Coil Selection For HSS R-22 Units CFMAir Handler Selection Example Indoor Compressor Section Location InstallationRemoving Existing Condensing Unit Where Applicable Air Handler InstallationHTS/HSS Installation GROUND-LOOP Heat Pump Applications Piping InstallationAntifreeze Low Water Temperature Cutout Setting CXM ControlGround-Loop Heat Pump Applications Flushing the Earth LoopCompressor section must be sealed to prevent entry Approximate Fluid Volume U.S. gal. L per 100 of PipeFluid Volume gal liters per 100’ 30 meters Pipe Antifreeze Percentages by VolumeFlow Regulation Water Quality StandardsExpansion Tank and Pump Water Control ValveWater Well Connections Water Coil Low Temperature Limit SettingErosion and Clogging Water Quality StandardsLineset Diameters and Charge Information Refrigeration InstallationLine Set Installation Evacuation and Charging the Unit Add-On Heat Pump ApplicationsRefrigeration Installation Charging The System Evacuation Of The Lineset And CoilDetermining Sub-Cooling Checking Superheat and Subcooling Determining SuperheatExample R-22 refrigerant Hot Water Generator Typical HWG Installation Indoor Compressor SectionInitial Start-Up Water Tank PreparationHWG Water Piping Water Tank RefillHot Water Generator Module Refrigeration Installation HSS Series Electrical Data Electrical Line VoltageGeoMax 2 HTS Series Electrical Data Electrical Power Wiring Thermostat Connections Electrical HWG WiringHWG Wiring Indoor Compressor Section Low Water Temperature Cutout SelectionTaco Valve Electrical Low Voltage WiringAccessory Connections Two-stage HTS UnitsTwo-Stage HTS Piping Thermostat InstallationCXM Controls Diagnostic Features Safety Features CXM ControlWater coil low temperature FP1 The FP1 thermistor Air coil low temperature FP2 The FP2 thermistor temperaturePage Y1, Y2, O Stage 2 cooling CXM Control Start-up OperationVariable Speed PSC Air Handler CXM Thermostat Details Nominal resistance at various temperaturesUnit Operation Unit Starting and Operating ConditionsOperating Limits Starting ConditionsUnit and System Checkout Before Powering SYSTEM, please check the followingUnit Start-up Procedure Test Mode Pins Unit Start-Up ProcedureR-22 HSS Compressor Section Coax Water Pressure Drop Water Temperature Change Through Heat ExchangerUnit Operating Conditions 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