HKV SERIES Table of Contents Model Nomenclature General Information HKV Physical Data HKV084-150 Dimensional Data HKV168-300 Dimensional Data Installation Piping Installation Condensate Installation Water-Loop Heat Pump Applications Ground-Loop Heat Pump Applications Ground-Water Heat Pump Applications Electrical Data Electrical - Power Wiring Electrical - Power &...
Installation, Operation & Maintenance - HKV Series Model Nomenclature 4 5 6 13 14 0 8 4 C 1 A C B T MODEL TYPE HK = HEAT CONTROLLER LARGE COMMERCIAL AIR FLOW OPTIONS CONFIGURATION V = VERTICAL (NON PAINTED) BF = BACK RETURN / FRONT SUPPLY BT = BACK RETURN / TOP SUPPLY FB = FRONT RETURN / BACK SUPPLY...
Installation, Operation & Maintenance - HKV Series Storage Pre-Installation General Information Safety � WARNING! � Warnings, cautions, and notices appear throughout this manual. Read these items carefully before attempting any WARNING! All refrigerant discharged from this unit must installation, service, or troubleshooting of the equipment. be recovered WITHOUT EXCEPTION.
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Installation, Operation & Maintenance - HKV Series Prepare units for installation as follows: � CAUTION! � 1. Compare the electrical data on the unit nameplate with ordering and shipping information to verify that CAUTION! All three phase scroll compressors must have the correct unit has been shipped.
Installation, Operation & Maintenance - HKV Series HKV084-150 Dimensional Data Discharge Connections Return Air Connections Overall Cabinet Water Connections Electrical Knockouts Duct Flange Using Return Air Opening Model Depth Width Height Supply Supply Water Water Con- Return Return Note Width Depth Inlet Outlet...
Installation, Operation & Maintenance - HKV Series HKV168-300 Dimensional Data ALL CONFIGURATIONS REQUIRE SERVICE ACCESS AREA DESCRIBED IN NOTES 7, 8, 9, AND 10. AIR OUT AIR OUT AIR OUT AIR OUT RETURN AIR BLOWER RETURN AIR ROTATION RETURN AIR RETURN AIR Control Box Control Box...
Installation, Operation & Maintenance - HKV Series Installation Figure 2b: Typical Vertical Installation Rear Return/Top Discharge shown Return Air Refer to Dimensional Data pages for 24 V Remote other arrangements & dimensions Supply Thermostat Return Air Ductwork not shown. Supply All components external Plug water of unit are field supplied.
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Installation, Operation & Maintenance - HKV Series • On units with multiple fan outlets a “pair of pants” connection to a single zone duct system. duct connection must be used for proper air balance • Never connect a bypass damper from the supply air and distribution and to prevent fan oscillation.
Installation, Operation & Maintenance - HKV Series Piping Installation Installation of Supply and Return Piping � WARNING! � Follow these piping guidelines. 1. Install a drain valve at the base of each supply and WARNING! Polyolester Oil, commonly known as POE oil, is return riser to facilitate system flushing.
Installation, Operation & Maintenance - HKV Series Condensate Installation Condensate Piping - HKV - Remove KO on side that Each unit must be installed with its own individual line to drain will be connected. Remove access panels. Inside the building main condensate drain line or riser. Provide of unit, untie and uncoil drain hose.
Installation, Operation & Maintenance - HKV Series Water-Loop Heat Pump Applications Commercial systems typically include a number of units The flow rate is usually set between 2.25 and 3.5 gpm plumbed to a common piping system. Any unit plumbing per ton [2.9 l/m and 4.5 l/m per kW] of cooling capacity. maintenance work can introduce air into the piping Comfort-Aire/Century recommends 2.5 gpm per ton system, therefore air elimination equipment is a major...
Installation, Operation & Maintenance - HKV Series Ground-Loop Heat Pump Applications � CAUTION! � Piping Installation - The typical closed loop ground source system is shown in Figure 6. All earth loop piping materials should be limited to only polyethylene fusion for CAUTION! The following instructions represent industry accepted installation practices for Closed Loop Earth inground sections of the loop.
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Installation, Operation & Maintenance - HKV Series Antifreeze - In areas where minimum entering loop exchanger is recommended. In ground water situations temperatures drop below 40°F (5°C) or where piping will where scaling could be heavy or where biological growth be routed through areas subject to freezing, anti-freeze such as iron bacteria will be present, a closed loop system is needed.
Installation, Operation & Maintenance - HKV Series Ground-Water Heat Pump Applications � CAUTION! � CAUTION! Low Water Temperature Cut-Out Setting For all open loop systems the 30°F (-1.1°C) LT1 setting (factory setting-water) should be used to avoid freeze damage to the unit. See Low temperature protection selection for closed loop systems with anitfreeze.
Installation, Operation & Maintenance - HKV Series Electrical Data � WARNING! � � CAUTION! � WARNING! To avoid possible injury or death due to electrical CAUTION! Use only copper conductors for field installed shock, open the power supply disconnect switch and secure electrical wiring.
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Installation, Operation & Maintenance - HKV Series Table 4B: HKV Electrical Data Dual Point Power Compressor Emergency Power Supply Comp Voltage Min/Max Blower Total Total Model Voltage Comp Code Voltage Option Comp Unit Circuit Fuse/ Fuse/ HACR HACR 208-3-60 197/254 A, B, C 23.2 164.0...
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Installation, Operation & Maintenance - HKV Series Table 4C: HKV Electrical Data Standard with Internal Pump or ClimaDry ® Compressor Pump Total Voltage Min/Max Blower Max Fuse Model Voltage Motor Unit Circuit Code Voltage Option / HACR 208-3-60 197/254 A, B, C 23.2 164.0 1.10...
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Installation, Operation & Maintenance - HKV Series Table 4D: HKV Electrical Data Dual Point Power with Pump or ClimaDry ® Compressor Emergency Power Supply Voltage Min/Max Blower Model Voltage Pump Total Code Voltage Option Fuse/ Motor Fuse/ HACR HACR 208-3-60 197/254 A, B, C 23.2...
Installation, Operation & Maintenance - HKV Series Electrical - Power Wiring � WARNING! � Thermostat Installation - The thermostat should be located on an interior wall in a larger room away from supply duct drafts. Do NOT locate the thermostat in areas WARNING! To avoid possible injury or death due to electrical shock, open the power supply disconnect switch subject to sunlight, drafts or on external walls.
Installation, Operation & Maintenance - HKV Series Electrical - Power & Low Voltage Wiring Accessory Connections - A terminal paralleling the ELECTRICAL - LOW VOLTAGE WIRING compressor contactor coil has been provided on the DXM2 control. Terminal “A” is designed to control accessory Thermostat Connections - The thermostat will be wired devices.
Installation, Operation & Maintenance - HKV Series Figure 24a: Communicating Thermostat Connection to DXM2 Control Electrical - Thermostat Wiring Thermostat DXM2 7602-457 Thermostat Installation - The thermostat should be of the back plate. Mark the position of the back plate 24Vac Common Comm + located on an interior wall in a larger room, away from...
Installation, Operation & Maintenance - HKV Series ClimaDry ® II Sequence of Operation ® ClimaDry II Sequence of Operation - A heat pump • Fan Only: A (G) call from the thermostat to the (G) ® equipped with ClimaDry II can operate in three modes; terminal of the DXM2 control board will bring the unit cooling, cooling with reheat (dehumidification), and on in fan only mode.
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Installation, Operation & Maintenance - HKV Series ® • Reheat Mode: A call from the Humidistat/Dehumidistat ClimaDry II Application Considerations to the (H) terminal of the DXM2 control board will The reheat coil adds a small amount of resistance to the bring the unit on in Reheat Mode if there is no call air stream.
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Installation, Operation & Maintenance - HKV Series ClimaDry ® II Schematic WATER OUT MODULATING (TO WATER LOOP) REFRIGERANT IN MIXING (COOLING) VALVE WATER IN (FROM WATER LOOP) INTERNAL COAX PUMP LEAVING REFRIGERANT OUT ENTERING (COOLING) Note: EVAPORATOR All components shown REHEAT are internal to the heat COIL...
Installation, Operation & Maintenance - HKV Series CXM Controls CXM Control - For detailed control information, see provides field selection to disable the UPS feature. CXM Application, Operation and Maintenance (AOM) On = Enabled. Off = Disabled. manual (part # 97B0003N12). DIP switch 2: Stage 2 Selection - provides selection of whether compressor has an “on”...
Installation, Operation & Maintenance - HKV Series DXM2 Controls DXM2 Control - For detailed control information, see provides selection of compressor relay staging operation. DXM2 Application, Operation and Maintenance (AOM) The compressor relay can be selected to turn on with manual (part # 97B0003N15).
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Installation, Operation & Maintenance - HKV Series DXM2 Controls 1.8 – Boilerless changeover temperature: DIP 1.8 DIP Package #3 (S3) provides selection of boilerless changeover temperature – DIP Package #3 has 4 switches and provides the setpoint. Note that the LT1 thermistor is sensing following setup and operating selections: refrigerant temperature between the coaxial heat 3.1 –...
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Installation, Operation & Maintenance - HKV Series DXM2 Controls Table 7b: LED and Alarm Relay Output Table DMX2 CONTROLLER FAULT CODES DMX2 Fault and Status LED Operation Fault LED Status LED Alarm Relay with Test Mode Not Active (Red) (Green) DXM2 Is Non-Functional Off...
Installation, Operation & Maintenance - HKV Series DXM2 Layout and Connections Communicating Service tool 5" stat connection connection (240Vac) A+ 24V (240Vac) N.C. N.O. N.O. Fan Enable Fan Speed Test Button Conventional stat connection to Speed up Time Delays Test ECM Motor Connection Water Coil...
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Installation, Operation & Maintenance - HKV Series DXM2 Controls 5" DXM2 Control Start-up Operation – The control will not Figure 26b: Test Mode Button operate until all inputs and safety controls are checked for normal conditions. The compressor will have a 5 (240Vac) (240Vac) A+ 24V...
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Installation, Operation & Maintenance - HKV Series DXM2 Controls DXM2 Thermostat Details Table 8: Nominal Resistance at Various Temperatures Thermostat Compatibility – Most heat pump and heat/ Resistance Resistance Temp (ºC) Temp (ºF) Temp (ºC) Temp (ºF) (kOhm) (kOhm) cool thermostats can be used with the DXM2, as well as -17.8 85.34 131.0...
Installation, Operation & Maintenance - HKV Series Safety Features Safety Features – CXM/DXM2 Control Low pressure switch: The low pressure switch must be open The safety features below are provided to protect and remain open for 30 continuous seconds during “on” the compressor, heat exchangers, wiring, and other cycle to be recognized as a low pressure fault.
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Installation, Operation & Maintenance - HKV Series Diagnostic Features Unit Performance Sentinel-UPS (patent pending): The UPS feature indicates when the heat pump is operating The LED on the CXM board advises the technician of the inefficiently. A UPS condition exists when: current status of the CXM control.
Installation, Operation & Maintenance - HKV Series Blower Adjustment � CAUTION! � Belt Tensioning Procedure - HKV Blower motors for HKV models are slide base mounted. To adjust the belt tension: CAUTION! Always disconnect all power supply(s) to unit prior to making belt or sheave adjustments. Inadvertently 1.
Installation, Operation & Maintenance - HKV Series Tensioning V-Belt Drives General Rules of Tensioning DEFLECTION = BELT SPAN 1. Ideal tension is the lowest tension at which the belt will not slip under peak load conditions. 2. Check tension frequently during the rst 24-48 hours of operation. 3.
Installation, Operation & Maintenance - HKV Series Blower Sheave Information Table 4a: HKV Blower Sheave and Belt Information Drive Package Configuration Model Component Return/Supply Blower Sheave BK95 X 1” BK110 X 1” BK95 X 1” BK95 X 1” BK95 X 1” Motor Sheave 1VP40 X 7/8”...
Installation, Operation & Maintenance - HKV Series Blower Performance Data - Units with ClimaDry (PSC Motor) ® HKV with ClimaDry - Additional ESP Loss ® Coil Face Velocity HKV084, 096, 168 & 192 HKV120 & 240 HKV300 In. of Water In.
Installation, Operation & Maintenance - HKV Series Unit Commissioning & Operating Conditions Environment - This unit is designed for indoor The commissioning table indicates air and water installation only. Do not install in an area subject to temperatures which are suitable for initial unit freezing or where humidity levels can cause cabinet commissioning in an environment where the flow rate and condensation.
Installation, Operation & Maintenance - HKV Series Piping System Cleaning & Flushing � CAUTION! � replacement rate to equal the rate of bleed. 7. Refill the system and add trisodium phosphate in a proportion of approximately one pound per 150 gal- CAUTION! To avoid possible damage to a plastic (PVC) piping system, do not allow temperatures to exceed 110°F lons [1/2 kg per 750 L] of water (or other equivalent...
Installation, Operation & Maintenance - HKV Series Unit & System Checkout � WARNING! � exchangers. � Unit Air Coil & Filters: Ensure filter is clean and accessible. To obtain maximum performance and WARNING! Polyolester Oil, commonly known as POE oil, is a synthetic oil used in many refrigeration systems including avoid possible condensate blow-off the coil should those with HFC-410A refrigerant.
Installation, Operation & Maintenance - HKV Series Unit Start Up Procedure � WARNING! � f. Check air temperature drop across the coil when compressor is operating. Air temperature should drop between 15°F [8°C] and 25°F [14°C]. WARNING! When the disconnect switch is closed, high voltage is present in some areas of the electrical panel.
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Installation, Operation & Maintenance - HKV Series Table 7: Coax Water Pressure Drop CXM/DXM2 Safety Control Reset - Lockout - In Pressure Drop Model Lockout mode, the Status LED will begin fast flashing. The 30°F 50°F 70°F 90°F compressor relay is turned off immediately. Lockout mode 10.5 can be soft reset via the thermostat “Y”...
Installation, Operation & Maintenance - HKV Series Start-up Log Sheet Installer: Complete unit and system checkout and follow unit start-up procedures in the IOM. Use this form to record unit information, temperatures and pressures during start-up. Keep this form for future reference. Job Name: Street Address: Model Number:...
Installation, Operation & Maintenance - HKV Series Preventive Maintenance Water Coil Maintenance Condensate Drain (Direct Ground Water Applications Only) In areas where airborne bacteria produce a slime in the drain pan, it may be necessary to treat chemically with If the installation is performed in an area with a known an algaecide every three months or so to minimize the high mineral content (125 P.P.M.
Installation, Operation & Maintenance - HKV Series Functional Troubleshooting Fault Htg Clg Possible Cause Solution Check line voltage circuit breaker and disconnect. Check for line voltage between L1 and L2 on the contactor. Main power problems Green Status LED Off Check for 24VAC between R and C on CXM/DXM2 Check primary/secondary voltage on transformer.
Installation, Operation & Maintenance - HKV Series Performance Troubleshooting Performance Troubleshooting Htg Clg Possible Cause Solution Dirty filter Replace or clean. Check for dirty air filter and clean or replace. Reduced or no air flow in heating Check fan motor operation and airflow restrictions. Too high of external static.
Installation, Operation & Maintenance - HKV Series Troubleshooting Form Water-to-Air Units Model #: l a i f i t & Complaint: REFRIGERANT: HFC-410A HEATING POSITION COOLING POSITION OPERATING MODE: HEATING COOLING REFRIG FLOW - HEATING REFRIG FLOW - COOLING REVERSING CONDENSER (HEATING) VALVE EVAPORATOR (COOLING)
Installation, Operation & Maintenance - HKV Series What’s New Follow All Warnings and Cautions in This Manual Before Attempting Conversion. Top Discharge to Straight Discharge Convertible Blower Access Panel C-Box/ Motor Access Panel Compressor Access Panel Step 1: Remove the three panels, as shown.
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Installation, Operation & Maintenance - HKV Series Step 2: Remove Blockoff Air Handler as shown. Loosen belt and remove. Blockoff Air Handler Step 3: Remove bolts (4x) off blower panel. Remove bolts (4x) (2x ea. side) from blower sides. Step 3 Step 3...
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Installation, Operation & Maintenance - HKV Series Step 4: Remove bolts (4x) and take blower glides out. Blower Glides (2x) Step 5: Attach Blower Glides to Blower BTM Load Brackets as shown. Use bottom set of holes (.203 Dia.) on Blower BTM Load Brackets. Blower Shaft should be sitting right on top of the Blower Glides.
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Installation, Operation & Maintenance - HKV Series Step 6: Stand in front and pull Blower ASM on to the ridge of the Blower Glides. Step 7: Rotate Blower ASM using Blower Glides as a guiding track. Step 8: When the Blower ASM is parallel to the floor, push the Blower ASM back so that the Blower Panel is flush with the unit.
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Installation, Operation & Maintenance - HKV Series Step 9: Attach Blower ASM with bolts (4x) as shown. Step 10: Remove Bower Glides (2x) and re-attach back in compressor section. Step 10...
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Installation, Operation & Maintenance - HKV Series Important! Step 11: Re-bolt Blower ASM to Blower BTM load brackets (4) 1/4 Re-attach belt and tighten.
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Installation, Operation & Maintenance - HKV Series Step 12: Re-attach blockoff air handler as shown. Blockoff air handler Blower filler panel C-box/motor access panel Compressor Panel Access Step 13: Put (3x) panels back on. Reverse steps to change a straight discharge to a top discharge.
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Installation, Operation & Maintenance - HKV Series Front Control Box/ Motor Access to Back Access Convertible Step 1: Remove the three panels as shown. Return Air Back Compressor/ C-Box/ Motor Access Front C-Box/ Panel Motor Access Panel Control Box Compressor Access Panel Step 2: Remove Motor Cover and Control Box Cover as shown.
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Installation, Operation & Maintenance - HKV Series Step 3: Remove screws from Control Box (Qty 4x) and A) flip down, B) slide across and C) flip up as shown using the guide rails inside as a guide. Re-attach control box with screws. Screws Right Side View Step 4: Loosen Belt tension and take Belt off.
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Installation, Operation & Maintenance - HKV Series Step 6: Move Bolt-Belt Adjustment ASM to opposite side and re-attach. Step 6 Step 7: Put Belt back on and tighten. Step 8: Place panels back on unit. Put Control Box Cover and Reverse steps to go from Motor Cover on return side.
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Installation, Operation & Maintenance - HKV Series • Water In-Out Available on Either Side • Hi-Low Voltage Access on Any Side • Full Filter Frame - Bottom Access - 25, 50, 100mm • Filters - 25 or 50mm Fiberglass and 100mm Merv 8 Water Out Control Box Water Out...
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Installation, Operation & Maintenance - HKV Series Condensate Drain Can Connect to Either Side of Unit Condensate Drain Can Connect to Either Side of Unit TLV Units come with flex hose and 1” FPT condensate connection tied inside (shown above) Installer will untie flex hose and make an internal trap on either the left side (shown above) or on the right side.
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LIMITED EXPRESS WARRANTY - HBH/HBV LARGE and HKV SERIES WATER-SOURCE HEAT PUMP Congratulations on purchasing your new HVAC equipment. It has DURATION OF WARRANTY & REGISTRATION been designed for long life and reliable service, and is backed by one The warranty begins on the date of purchase by the original consumer. The of the strongest warranties in the industry.
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