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INSTALLATION, OPERATION
& MAINTENANCE MANUAL
HTV/HTD/HTH Series
Two-Stage
Geothermal Heat Pumps
2 to 6 Tons
Heat Controller, Inc. • 1900 Wellworth Ave. • Jackson, MI 49203 • (517)787-2100 • www.heatcontroller.com
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Model Breakdown Model Nomenclature – Two Stage Geothermal Heat Pump 1 2 3 4 5 6 7 910 11 12 13 14 HT V 0 2 4 C 1 C 0 1 A L K Supply Air Flow & Series Motor Configuration HT = Heat Controller Two Stage Supply Configuration Motor K Top HTV ECM N Down HTD ECM Configuration P Back HTH ECM V = Vertical Up Flow W Straight HTH ECM H = Horizontal D = Vertical Down Flow Unit Size 024 Return Air Flow Configuration 036 L
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Safety CAUTION: Indicates a potentially hazardous situation or an unsafe practice, which if not avoided could result in minor or Warnings, cautions and notices appear throughout this manual. moderate injury or product or property damage. Read these items carefully before attempting any installation, service, or troubleshooting of the equipment. NOTICE: Notifi cation of installation, operation or maintenance infor
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. General Information Inspection 7. Locate and verify any hot water generator (HWG), hanger, Upon receipt of the equipment, carefully check the shipment or other accessory kit located in the compressor section or against the bill of lading. Make sure all units have been received. blower section. Inspect the packaging of each unit, and inspect each unit for damage. Insure that the carrier makes proper notation of any
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. General Information Mounting Horizontal Units Horizontal Unit Location Horizontal units have hanger kits pre-installed from the factory Units are not designed for outdoor installation. Locate the unit in as shown in Figure 1. Figure 3 shows a typical horizontal unit an INDOOR area that allows enough space for service personnel installation. to perform typical maintenance or repairs without removing unit from the
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Horizontal Installation Figure 3: Typical Horizontal Unit Installation Air Coil - To obtain maximum performance, the air coil should be cleaned before start-up. A 10% solution of dishwasher detergent and water is recommended for both sides of the coil. A thorough water rinse should follow. 6
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Field Conversion of Air Discharge Overview - Horizontal units can be fi eld converted between side Figure 4: Left Return Side to Back (straight) and back (end) discharge using the instructions below. Remove Screws Water Connection End Note: It is not possible to fi eld convert return air between left or right return models due to the necessity of refrigeration copper Return Air piping changes. Preparation - It is bes
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Horizontal Installation Condensate Piping Figure 6: Horizontal Condensate Connection Condensate Piping – Horizontal Units Pitch the unit toward the drain as shown in Figure 2 to improve the condensate drainage. On small units (less than 2.5 tons/8.8 kW), insure that unit pitch does not cause condensate leaks inside the cabinet. Install condensate trap at each unit with the top of the trap positioned below the
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Vertical Installation Figure 7: Vertical Unit Mounting Vertical Unit Location Units are not designed for outdoor installation. Locate the unit in an INDOOR area that allows enough space for service personnel to perform typical maintenance or repairs without removing unit from the mechanical room/closet. Vertical units are typically installed in a mechanical room or closet. Never install units in areas subject to
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Vertical Installation Sound Attenuation for Vertical Units - Sound attenuation is Condensate Piping for Vertical Units - Vertical units utilize a achieved by enclosing the unit within a small mechanical room condensate hose inside the cabinet as a trapping loop; therefore or a closet. Additional measures for sound control include the an external trap is not necessary. Figure 10a shows typical following: condensate
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Water Connection Installation External Flow Controller Mounting The female locking ring is threaded onto the pipe threads which The Flow Controller can be mounted beside the unit as shown holds the male pipe end against the rubber gasket, and seals the in Figure 12. Review the Flow Controller installation manual for joint. HAND TIGHTEN ONLY! DO NOT OVERTIGHTEN! more details. Figure 11: Water Connections Water Connec
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Ground-Loop Heat Pump Applications most areas to prevent freezing. All air and debris must be removed Low temperature protection should be maintained to 15°F [9°C] from the earth loop piping before operation. Flush the loop with a below the lowest expected entering loop temperature. For high volume of water at a minimum velocity of 2 fps (0.6 m/s) in all example, if 30°F [-1°C] is the minimum expected entering loop
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Ground-Loop Heat Pump Applications Table 2: Antifreeze Percentages by Volume Minimum Temperature for Low Temperature Protection Type 10°F 15°F 20°F 25°F [-12.2°C] [-9.4°C] [-6.7°C] [-3.9°C] Methanol 21% 17% 13% 8% Propylene Glycol 29% 24% 18% 12% Ethanol* 23% 20% 16% 11% * Must not be denatured with any petroleum based product GROUND-WATER HEAT PUMP APPLICATIONS Open Loop - Ground Water Systems Pressure Tank and Pum
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Ground-Water Heat Pump Applications mounted on the outlet of the water control valve. The device is CAUTION! typically a brass fi tting with an orifi ce of rubber or plastic material that is designed to allow a specifi ed fl ow rate. On occasion, fl ow CAUTION! Refrigerant pressure activated water regulating control devices may produce velocity noise that can be reduced valves should never be used with this equipmen
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Water Quality Standards Table 3: Water Quality Standards Water Quality HX Closed Open Loop and Recirculating Well Parameter Material Recirculating Scaling Potential - Primary Measurement Above the given limits, scaling is likely to occur. Scaling indexes should be calculated using the limits below pH/Calcium Hardness - All pH < 7.5 and Ca Hardness <100ppm Method Index Limits for Probable Scaling Situations - (Operati
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Hot Water Generator The HWG (Hot Water Generator) or desuperheater option Electric water heaters are recommended. If a gas, propane, or provides considerable operating cost savings by utilizing excess oil water heater is used, a second preheat tank must be installed heat energy from the heat pump to help satisfy domestic hot (Figure 15). If the electric water heater has only a single center water requirements. The
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Hot Water Generator ANTI-SCALD Installation COLD WATER The HWG is controlled by two sensors and a microprocessor VALVE PIPING SUPPLY control. One sensor is located on the compressor discharge CONNECTIONS CHECK VALVE line to sense the discharge refrigerant temperature. The other sensor is located on the HWG heat exchanger’s “Water In” line to sense the potable water temperature. ANTI-SCALD VALVE WARNING! C WARNI
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Hot Water Generator Warning! The HWG pump Is fully wired from the factory. Use insure maximum utilization of the heat available from the refrigeration system and conserve the most energy. On tanks extreme caution when working around the microprocessor control as it contains line voltage connections that presents with both upper and lower elements and thermostats, the a shock hazard that can cause severe injury o
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Electrical - Line Voltage WARNING! CAUTION! WARNING! To avoid possible injury or death due to electrical CAUTION! Use only copper conductors for fi eld installed shock, open the power supply disconnect switch and secure it electrical wiring. Unit terminals are not designed to accept other in an open position during installation. types of conductors. Table 4a: HT Series Electrical Data All HT TT Units with Emerson
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Installation, Operation & Maintenance HTV/HTD/HTH SERIES Heat Controller, Inc. Electrical - Line Voltage Figure 16: HT Single Phase Line Voltage WARNING! Field Wiring WARNING! Disconnect electrical power source to prevent injury or death from electrical shock. CAUTION! CAUTION! Use only copper conductors for fi eld installed electrical wiring. Unit terminals are not designed to accept other types of conductors. Electrical - Line Voltage All fi eld installed wiring, including electrical gro
