Enertech MCH060, MPH024, MPH036 Installation & Operation Manual
Enertech MPH024 is a split-system air conditioner designed for space conditioning and domestic hot water. Its integrated electric or dual fuel options provide reliable backup heating and DHW, ensuring comfort even in cold conditions. This unit eliminates the need for buffer tanks, saving valuable floor space and reducing installation costs. The MPH024 features advanced controls and variable speed operation for energy efficiency.
PDF
Download
Document
Advertisement
Advertisement
Installation & Operations Manual AV MODELS OUTDOOR AIR-TO-WATER HEAT PUMPS MD/ME MODELS INDOOR MODULE A New Era with Advantage... Enertech’s Advantage system was painstakingly engineered to function flawlessly between space conditioning and domestic hot water. Our indoor module has truly set the bar with the first turnkey total comfort solution. With its integrated electric or dual fuel option, each backing up heating and DHW, you’ll never be left out in the cold! • • • • No More Buffer Tanks, Free Up Floor Space Massive Labor & Accessories $avings Integrated Pumping & Controls Onboard Emergency Backup 20D826-01NN 20D826-01NN Section 1: Model Nomenclature Table of Contents Nomenclature Decoder...................................................................................................................................................................4 Section 2: Product & Unit Data Unit Dimensional Data : AV.............................................................................................................................................................5 EAV Series Outdoor Unit Labels.......................................................................................................................................................6 EAV Outdoor Unit Side Panel Removal............................................................................................................................................6 EAV Unit Electrical Layout...............................................................................................................................................................7 EAV Unit Refrigerant Circuit Layout.................................................................................................................................................8 Unit Dimensional Data : MD/ME.....................................................................................................................................................9 EME/EMD Unit Labels....................................................................................................................................................................10 EME/EMD Unit Interior Layout......................................................................................................................................................11 Unit Electrical Data : AV.................................................................................................................................................................12 Unit Electrical Data : MD/ME.........................................................................................................................................................12 Section 3: Introduction & Operational Considerations Introduction...................................................................................................................................................................................13 Inspection......................................................................................................................................................................................13 Pre-Installation Steps.....................................................................................................................................................................13 Consumer Instructions...................................................................................................................................................................14 Electrical........................................................................................................................................................................................14 Variable Speed...............................................................................................................................................................................14 Designing the System....................................................................................................................................................................15 Operating Conditions.....................................................................................................................................................................16 Outdoor Unit..................................................................................................................................................................................17 Compressor Heater........................................................................................................................................................................17 Enertech Recommendations for All EAV Unit Applications...........................................................................................................17 Section 4: Outdoor Installation Considerations Introduction...................................................................................................................................................................................18 Placement......................................................................................................................................................................................18 Service Area...................................................................................................................................................................................18 Pipe Connections...........................................................................................................................................................................19 Snow Protection............................................................................................................................................................................19 Section 5: Unit Piping Water Quality................................................................................................................................................................................21 Flow Rates and Piping Sizing..........................................................................................................................................................22 Load Piping....................................................................................................................................................................................23 Bypass Valve..................................................................................................................................................................................23 Pump Mounting.............................................................................................................................................................................24 Piping Diagrams.............................................................................................................................................................................24 Piping Diagram - Flow Rates and Piping Sizing..............................................................................................................................25 Anti-Scald Valve Piping Connections.............................................................................................................................................25 Piping Diagram - Indoor Module...................................................................................................................................................26 Piping Diagram - Radiant Floor......................................................................................................................................................27 Piping Diagram - Hydronic Air Handler..........................................................................................................................................28 Flush Cart Design...........................................................................................................................................................................29 Flushing and Filling System............................................................................................................................................................29 Flushing Diagram - Outdoor Unit Heat Exchanger and Piping.......................................................................................................30 Flushing Diagram - Hot Water Tank...............................................................................................................................................31 Flushing Diagram - Distribution Zones...........................................................................................................................................32 Flushing Diagram - Indoor Module................................................................................................................................................33 Section 6: Antifreeze Antifreeze Overview......................................................................................................................................................................34 Antifreeze Charging.......................................................................................................................................................................34 Antifreeze Percentages by Volume Table......................................................................................................................................35 Antifreeze Specific Gravity Table...................................................................................................................................................35 Monobloc Requirements...............................................................................................................................................................36 Section 7: Field Wiring Introduction...................................................................................................................................................................................37 Communication.............................................................................................................................................................................37 Domestic Water Heating Controls ................................................................................................................................................38 Space Conditioning Controls..........................................................................................................................................................39 Diagram: Heating/Cooling - Radiant - One Fan Coil (fan coil is Enertech MPH series)..................................................................40 Diagram: Heating/Cooling - Multiple Fan Coils - No Radiant (All fan coils are Enertech MPH series)...........................................41 Diagram: Heating/Cooling - Multiple Fan Coils - No Radiant (at least one fan coil has Y/W inputs)*...........................................42 Enertech Global, LLC 2 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Sequence of Operations................................................................................................................................................................43 Pump Start.....................................................................................................................................................................................43 Troubleshooting.............................................................................................................................................................................44 Outdoor Air Temperature (OAT)....................................................................................................................................................45 Heating Curves...............................................................................................................................................................................45 Control Box : AV.............................................................................................................................................................................46 Control Box : MD/ME.....................................................................................................................................................................46 Components..................................................................................................................................................................................47 Wiring Diagram : AV......................................................................................................................................................................48 Wiring Diagram : MD.....................................................................................................................................................................49 Wiring Diagram : ME......................................................................................................................................................................50 Wizard : Menu System...................................................................................................................................................................51 Manual Mode................................................................................................................................................................................51 Alarms............................................................................................................................................................................................51 Data Logging..................................................................................................................................................................................51 Wizard : Pump Control..................................................................................................................................................................52 Wizard : Domestic Hot Water........................................................................................................................................................52 Wizard : Indoor Climate.................................................................................................................................................................53 Wizard : Defrost Settings...............................................................................................................................................................54 Wizard : Advanced Menu..............................................................................................................................................................54 Section 9: Equipment Start-Up Preparation....................................................................................................................................................................................55 Startup Wizard...............................................................................................................................................................................55 Equipment Startup Checklist.........................................................................................................................................................58 WPD Tables....................................................................................................................................................................................59 Section 10: Troubleshooting Refrigerant Circuit - Cooling Mode................................................................................................................................................60 Refrigerant Circuit - Heating Mode................................................................................................................................................61 Refrigerant Circuit - Vapor Injection Heating Mode......................................................................................................................62 Refrigerant Circuit - Active Defrost Mode.....................................................................................................................................63 Refrigerant Circuit - Passive Defrost Mode....................................................................................................................................64 Thermistor and Pressure Transducer Connections........................................................................................................................65 Thermistor Legend.........................................................................................................................................................................66 Outdoor Unit LED Status................................................................................................................................................................67 Indoor Unit LED Status...................................................................................................................................................................68 Indoor, Outdoor, and Inverter Alarms Tables................................................................................................................................69 Section 11: Warranty Form and Revision Table Warranty Registration Form..........................................................................................................................................................73 Revision Table................................................................................................................................................................................75 Enertech Global, LLC 3 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 1: Model Nomenclature Nomenclature Decoder ns o p� O er ng on r ge ra� a an gu h xch fi xc t tE on se p E a a a C e t e C a H ter n eH ns ns e U kup He nit e e Wa utur �o �o ag c urc :U isio ad nd ype t g p p t l a v o 6 o a a o r o e B F L S O O : : : : : : V St R H B T 5, 11 10 12 13 8: 3: 7: 14 9: 4, 1: 2: 15 y t aci E V Brand: E = Enertech A VDESCRIPTION 060 A 1 REVISION TABLE A A A B T SECN S Setup and Release NomenclatureStage: updated to EM (combined with EC: 19-032-N159) V =digits Variable - R410A Separate 14 andSpeed 15. Digit 14 renamed “Options”. S = “Standard”. Digit 15 renamed “Options. S = ”Standard”. 19-032-N159 Op�ons: 4/24/2020 Bryan L. CJM S = Standard 19-032-N159 4/24/2020 Source Heat Exchanger Op�ons: BWS 21-044-N01 BWS T - Tube and Fin Air Coil Load Heat Exchanger: B = Brazed Plate (BPHE) Unit Capacity (Nominal MBTUH): 030, 060 APPROVED 1/22/2019 Op�ons: S = Standard - Remove GeoComfort, Hydron Module, and TETCO; Add Enertech. Remove 109 gallon tank option. Digit 9 updated to include tank options 1,2. Digit 10 updated to Future use. Digit 11 updated to Type: A = Air-to-Water backup heat options D and E DATE 3/26/2021 Future Use: A = All Models Revision: A = Current Revision Future Use: A = All Models Voltage: 1 = 208/230V, 60Hz, 1Ph (Residen�al) Future Use: A = All Models Model Nomenclature - EM* Indoor Series 1: nd Bra 2: pe Ty 3: up ack B at He 4, 5, n U 6: y cit pa a it C se s s on e U tion ion tage r s i u pti p l v t o e O O u : : V R F 8: 7: 9: 11 10 E M D 000 A 1 A A A Options: A = No Option Brand: E = Enertech Options: A = No Option Type: M = Indoor Module, Air-to-Water DRAWING NUMBER Backup Heat: ENERTECH GLOBAL, LLC 20D297-01NN 2506 S. ELM STREET D = Dual Fuel (No Internal Heat In Indoor Module GREENVILLE, EIL=62246 Internal Electric Heat In Indoor Module (618) 664-9010 DESCRIPTION DOC. DESIGNER Future Use: MODEL NOMENCLATURE, A = AllBRIAN S. Models ENERTECH EAV OUTDOOR UNIT Voltage: DESIGN DATE 3/16/2021 Unit Capacity (Nominal MBTUH): PROPRIETY AND CONFIDENTIAL 1 = 208/230V, 60Hz, 1Ph (Residential) THE INFORMATION CONTAINED IN THIS DRAWING 000 = All Sizes IS THE SOLE PROPERTY OF ENERTECH GLOBAL, LLC. ANY REPRODUCTION IN PART OR AS A WHOLE, WITHOUT WRITTEN CONSENT, IS PROHIBITED. Revision: A = Current Revision Enertech Global, LLC 4 AV : MD/ME - Rev. A Models Installation and Operations Manual SHEET 1 of 1 Section 2: Product & Unit Data Unit Dimensional Data : AV Shipping Weight EAV030 - 410 lbs EAV060 - 438 lbs *All measurements are in inches. AV030-060 DIMENSIONAL DATA Enertech Global, LLC 5 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 2: Product & Unit Data EAV Series Outdoor Unit Labels Thermistor, Outdoor Air Air Coil Electrical Connection Load Out to Indoor Module Connection Piping Connections Label OUT IN Art.nr. 711453 Condensate Drain Pan Connection LEK Thermistor Air Coil (BT16) Data Serial nr. Load In from Indoor Module Connection Serial Number Data Plate Condensate Drain Pan LEK EAV Outdoor Unit Side Panel Removal Unscrew the screws and lift off the cover Enertech Global, LLC 6 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 2: Product & Unit Data EAV Unit Electrical Layout Compressor Control (TCB Board) Thermistor, Suction-Evap (Heating) (BT84) Thermistor, Load Out to Indoor Module (BT12) Thermistor, Vapor Injection Line (BT81) Vapor Injection Pressure Transducer (BP11) LEK Thermistor, Load In from Indoor Module (BT3) Harmonic Filter Capacitor Terminal Block (X6) Inverter (QA40) Enertech Global, LLC Thermistor, Compressor Discahrge (BT14) Low Pressure Switch (BP2) Crankcase Heater (qty 2) Thermistor, Suction Gas (BT17) Low Pressure Switch (BP8) 7 Thermistor, Liquid Line, Heating High Pressure (BT15) Transducer (BP9) High Pressure Switch (BP1) AV : MD/ME - Rev. A Models Installation and Operations Manual Section 2: Product & Unit Data EAV Unit Refrigerant Circuit Layout Solenoid Valve EEV Refrigeration Strainer Connection, Fluid to Indoor Unit Check Valve Brazed Plate Heat Exchanger EEV, Subcooler LEK Connection, Fluid from Indoor Unit Fan Compressor Service Port, Suction Pressure Reversing Valve Service Port, Discharge Pressure Compressor (GQ10) Enertech Global, LLC Filter Drier 8 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 2: Product & Unit Data Unit Dimensional Data : MD/ME Shipping Weight EMD - 212 lbs EME - 221 lbs *All measurements are in inches. Enertech Global, LLC 9 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 2: Product & Unit Data EME/EMD Unit Labels EM Indoor Module Cabinet Details EM Indoor Module Cabinet Details Power Supply (High Voltage) Out to Hydronic Zones In from Outdoor Unit Enertech Global, LLC Human Machine Interface In from Hydronic Zones Out to Hot Water Tank To Remove Panel Remove (3) screws Field Wiring (Low Voltage) In from Hot Water Tank Out to Outdoor Unit 10 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 2: Product & Unit Data EME/EMD Unit Interior Layout Remove plate and place low voltage field wiring from the left side into the field wiring block Immersion Heater Bypass Valve Water Solenoid Valves Circulation Pump Flow Meter Flush Valves Expansion Tank Y-Strainer Enertech Global, LLC 11 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 2: Product & Unit Data 20D237‐27NN: AV Electrical Data Unit Electrical Data : AV Model AV030 Voltage Code 1 Fan 60 Hz Power Compressor Drive Volts Phase HP FLA CMCC LRA 208/230 1 1/5 0.85 50.0 20.6 36.0 5 50.0 Min Circuit Amps Max Fuse HACR 26.6 45 AV060 1 208/230 1 1/5 0.85 45.9 80 Notes: 1. All line and low voltage wiring must adhere to the National Electrical Code and local codes, whichever is the most stringent. 2. In determining the correct supply wire size and maximum length, reference NFPA 70, Section 310. If the calculation is close to the maximum allowable ampacity of a particular wire size, use the next size up. This will ensure that no adverse effects occur, such as light dimming and/or shortened compressor life. 3. All fuses class RK-5. 4. Min/Max Voltage: 208/230/60 = 187-252 5. CMCC (Compressor Maximum Output Current Limit): This value is the maximum output of the dirve (inverter) to the compressor. Although not significant to the installation (continue to use MCA for wire/breaker sizing), this value is a required listing for the unit electrical data. 20D237‐26NN: EM Electrical Data Unit Electrical Data : MD/ME Model Voltage Code EMD000 EME000 1 1 60 Hz Power Immersion Heater Internal Pump Volts Phase Volts kW FLA HP FLA Min Circuit AMPS 208/230 208/230 1 1 230 9 39.1 1/4 1/4 1.5 1.5 3.4 52.7 Max Fuse HACR 15 60 Notes: 1. All line and low voltage wiring must adhere to the National Electrical Code and local codes, whichever is the most stringent. 2. In determining the correct supply wire size and maximum length, reference NFPA 70, Section 310. If the calculation is close to the maximum allowable ampacity of a particular wire size, use the next size up. This will ensure that no adverse effects occur, such as light dimming and/or shortened compressor life. 3. All fuses class RK-5. 4. Min/Max Voltage: 208/230/60 = 187-252 Proper Power Supply Evaluation When any compressor bearing unit is connected to a weak power supply, starting current will generate a significant “sag” in the voltage which reduces the starting torque of the compressor motor and increases the start time. This will influence the rest of the electrical system in the building by lowering the voltage to the lights. This momentary low voltage causes “light dimming”. The total electrical system should be evaluated with an electrician and HVAC technician. The evaluation should include all connections, sizes of wires, and size of the distribution panel between the unit and the utility’s connection. The transformer connection and sizing should be evaluated by the electric utility provider. Enertech Global, LLC 12 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 3: Introduction & Operational Considerations Introduction A New Era with Advantage Enertech’s Advantage system was painstakingly engineered to function flawlessly between space conditioning and domestic hot water. Our indoor module has truly set the bar with the first turnkey total comfort solution. With its integrated electric or dual fuel option, each backing up heating and DHW, you’ll never be left out in the cold! Unit Protection Protect units from damage and contamination due to plastering (spraying), painting and all other foreign materials that may be used at the job site. Keep all units covered on the job site with either the original packaging or equivalent protective covering. Cap or recap unit connections and all piping until unit is installed. Precautions must be taken to avoid physical damage and contamination which may prevent proper start-up and may result in costly equipment repair. Safety Labeling and Signal Words The signal words NOTICE, DANGER, WARNING, CAUTION, and Note are used on product labels and throughout this manual to identify levels of hazard seriousness. “NOTICE” Notification of installation, operation or maintenance information which is important, but which is NOT hazard related. Storage All units should be stored inside in the original packaging, in an upright position at all times. Units should not be stacked unless specially noted on the packaging. “CAUTION” Indicates a potentially hazardous situation or an unsafe practice which, if not avoided, COULD result in minor or moderate injury, product or property damage. Removal and Disposal “WARNING” Indicates a potentially hazardous situation which, if not avoided, COULD result in death or serious injury. All units removed from service should have all components, oils, antifreeze and refrigerants properly disposed of according to local and national environmental recycling codes, regulations, standards and rules. “DANGER” Indicates an immediate hazardous situation which, if not avoided, WILL result in death or serious injury. Pre-Installation Steps “Note” Used to highlight suggestions which will result in enhanced installation, reliability, or operation. Before you fully install the equipment, it is recommended you do the following: Inspection 1. 2. Upon receipt of any equipment, carefully check the shipment against the packing slip and the freight company bill of lading. Verify that all units and packages have been received. Inspect the packaging of each package and each unit for damages. Ensure that the carrier makes proper notation of all damages or shortage on all bill of lading papers. Concealed damage should be reported to the freight company within 5 days. If not filed within 5 days the freight company can deny all claims. 3. 4. Note: Notify Enertech Global, LLC shipping department of all damages within 5 days. It is the responsibility of the purchaser to file all necessary claims with the freight company. 5. Un-packaging 6. Enertech units are mounted to wooden pallets for easy handling during shipment and installation. Units are protected during shipment with durable cardboard corner posts, top and air coil panels. Shrink wrap is applied covering the entire unit and attachment to the pallet. Fully inspect the unit after unpacking Compare the electrical data on the unit nameplate with packing slip and ordering information to verify that the correct unit has been shipped. Inspect all electrical connections and wires. Connections must be clean and tight at the terminals, and wires should not touch any sharp edges or copper pipe. Verify that all refrigerant tubing is free of dents and kinks. Refrigerant tubing should not be touching other unit components. Before unit start-up, read all manuals and become familiar with unit components and operation. Thoroughly check the unit before operating. Locate the Unit Start-Up Form from this manual and have it available as the unit installation proceeds. Equipment Installation Installation location should include adequate service clearance around the unit, and be oriented in a way that piping or other permanently installed fixtures do not have to be removed for servicing. The Indoor Module should be located in a conditioned space where the ambient temperature remains between 55oF and 95oF with a maximum RH of 78-80%. Upon receipt of the unit, carefully remove the shrink wrap. Using a box cutter, slit the shrink wrap on the cardboard top and corner posts. Use caution to not damage the finished surface of the unit. Keep all cardboard or other packaging material for safe storage and transport to the job site prior to installation. ⚠ CAUTION ⚠ Remove the front service panel to locate technical documents; manuals, bulletins or instructions and accessory items; HWG piping kits, and strainers. ⚠ NOTICE ⚠ WHEN REMOVING PANELS, GIVE SPECIAL ATTENTION TO CABINET INSULATION. INTERLOCKING INSULATION EXTENDS BEHIND THE FRONT PLASTIC FAN GRATE. IF NEEDED, REMOVE LEFT CORNER PANEL AND FRONT PLASTIC FAN GRATE TO REMOVE INSULATION. Enertech Global, LLC ⚠ CAUTION ⚠ DO NOT OPERATE THE HEAT PUMP UNIT DURING BUILDING CONSTRUCTION PHASE 13 THE EME/EMD SERIES EQUIPMENT IS DESIGNED FOR INDOOR INSTALLATION ONLY (THE EAV EQUIPMENT IS DESIGN FOR OUTDOOR INSTALLATION). DO NOT INSTALL THE EME/EMD MODULE OR STORE IN A CORROSIVE ENVIRONMENT OR IN A LOCATION WHERE TEMPERATURE AND HUMIDITY ARE SUBJECT TO EXTREMES. EQUIPMENT IS NOT CERTIFIED FOR OUTDOOR APPLICATIONS. SUCH INSTALLATION WILL VOID ALL WARRANTIES. AV : MD/ME - Rev. A Models Installation and Operations Manual Section 3: Introduction & Operational Considerations ⚠ WARNING ⚠ FAILURE TO FOLLOW THIS CAUTION MAY RESULT Variable Speed Overview Enertech’s Variable speed Heat Pumps are designed to match their capacity to the load of the zone. With a true variable speed compressor and variable water flow, you now maximize the benefit from inverter driven technology. With the installation of a pressure differential bypass valve, even a small radiant floor heating zone (three or four 1/2” PEX circuits, 3 gpm of load flow) can allow a variable speed heat pump to operate without the use of a buffer tank. To maintain the minimum flow rate required for the heat pump (minimum 5 gpm), part of the flow is returned to the heat pump through the bypass valve, and the remainder is delivered to the hydronic zone (minimum 3 gpm). This approach works well for radiant floor zones. Very small loads will cause the heat pump to cycle, but the minimum load flow rate for the refrigerant circuit is always maintained. Systems that require cooling must utilize fan coils that are large enough to allow sufficient run time to provide adequate latent capacity. Fan coils smaller than one ton could cause the heat pump to cycle too often, not allowing the system to maintain a cold enough coil to provide good dehumidification. Therefore, Enertech recommends that fan coils, one ton (12,000 BTU’s) and larger are used with variable speed heat pumps. Zones that are smaller than 3 gpm are referred to as Micro-zones. Microzones do not work with Variable speed heat pumps, the flow rates are too low and cause the heat pump to short cycle. IN PERSONAL INJURY. USE CARE AND WEAR APPROPRIATE PROTECTIVE CLOTHING, SAFETY GLASSES AND PROTECTIVE GLOVES WHEN SERVICING UNIT AND HANDLING PARTS. Consumer Instructions Dealer should instruct the consumer in proper operation, maintenance, filter replacements, thermostat and indicator lights. Also provide the consumer with the manufacturer’s Owner’s Manual for the equipment being installed. Enertech Global D-I-Y Policy Enertech Global’s heat pumps and system installations may include electrical, refrigerant and/or water connections. Federal, state and local codes and regulations apply to various aspects of the installation. Improperly installed equipment can lead to equipment failure and health/safety concerns. For these reasons, only qualified technicians should install an Enertech Global built geothermal system. Because of the importance of proper installation, Enertech Global does not sell equipment direct to homeowners. Internet websites and HVAC outlets may allow for purchases directly by homeowners and do-it-yourselfers, but Enertech Global offers no warranty on equipment that is purchased via the internet or installed by persons without proper training. Enertech’s Advantage System has almost limitless flexibility, we will be happy to provide a custom solution for your project! If your project falls outside of the provided guidelines for water flow or BTU’s, please call our Design Services. Enertech Global has set forth this policy to ensure installations of Enertech Global geothermal systems are done safely and properly. The use of well-trained, qualified technicians helps ensure that your system provides many years of comfort and savings. Buffer Tank Buffer tanks are not recommended with Variable speed heat pumps. The purpose of a buffer tank is primarily to keep the heat pump running long enough to prevent short cycling when the hydronic load is much smaller than the heat pump capacity. Another important use of the buffer tank is to decouple the flow rate required for the heat pump from the flow rate of the hydronic system, which is typically much less than the heat pump requires. Heat pumps with single speed and two-stage compressors almost always need more flow rate than the design flow rate of the hydronic system they serve, especially if only one zone is calling for heating or cooling. Electrical Carry out the electrical installation with care. Do not connect the ground lead to gas lines, water lines, lightning conductors, or telephone line ground leads. Incorrect grounding can cause unit faults such as electrical shock due to short-circuiting. Use disconnect switches with sufficient breaker capacity. Wiring must be routed to prevent damage by metal edges or trapped by panels. Do not install the indoor or outdoor unit near locations where leakage of combustible gases can occur. Do not install the unit where corrosive gas or combustible gas or liquids can accumulate or be handled. The Indoor Module is not waterproof and must be installed indoors. Do not install and use the system close to equipment that generates electromagnetic fields or high frequency harmonics. Equipment such as inverters, standby generators, medical high frequency equipment and telecommunications equipment can affect the unit and cause malfunctions and breakdowns. The unit can also affect medical equipment and telecommunications equipment, so that it functions incorrectly or not at all. Insulate the unit’s connection pipes so that the ambient air moisture does not condense on them. Insufficient insulation can cause condensation, which can lead to moisture damage on the roof, floor, furniture, and valuable personal property. Enertech Global, LLC 14 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 3: Introduction & Operational Considerations Designing the System Indirect Tank Sizing Enertech strongly recommends using an approved zone control (HBX or EWC) to provide the most compatible operation with the Indoor Module. Although other control systems will work, Enertech Technical Services personnel are most familiar with the approved controls. Other controls may be difficult to support should troubleshooting be needed. Tank selection is based upon the number of bathrooms (types of showers and tubs), dishwashers, washing machines, and number of people in the home. Enertech offers two selections, a 45 gallon indirect tank and a 65 gallon indirect tank. Typically, a 45 gallon tank will handle two bathrooms with water efficient fixtures, one dishwasher, and one automatic clothes washer. A 65 gallon tank will handle 3-1/2 bathrooms with water efficient fixtures, one dishwasher, and one automatic clothes washer. If the home has been identified as a large usage application (see “Large Usage”, above), a second water heater in series with the Turbomax indirect water heater is required. Even applications that are not “Large Usage” will benefit from a backup water heater for times when the outdoor temperature is very cold, during defrost cycle, or for emergency use. DHW Considerations According to the Water Research Foundation, the average American shower uses approximately 15.8 gallons and lasts for 7.8 minutes at an average flow rate of 2.1 gpm. Depending upon local regulations, shower heads may be available with 1.8, 2.0, or 2.5 gpm flow rates. The state of California, for example limits the flow rate to 1.8 gpm, as of July 2018. In some cases flow restrictors can be removed/modified or multiple shower heads may allow significantly more water usage. Backup Heat Considerations, EME (Electric Heat) The EME model Indoor Module has an internal 9kW immersion heater that can be used for supplementing the heat pump capacity for hydronic heating and/or DHW heating. Depending upon the application, either the internal heater or external backup may make more sense. If additional heating capacity is needed, a determination should be made based upon type of heating required. For example, in most cases, a backup electric heater is installed in the fan coil. Since the fan coil is required for cooling anyway, it can be used for backup or for emergency heat. For DHW, a second water heater can provide both backup heating capacity and emergency DHW heating. The advantage of the internal electric heat is that duct heaters and second water heaters are not needed. However, if a pump fails, the internal electric heat cannot operate. Each application must be evaluated individually to ensure that the type of backup fits the requirements. Installation diagrams in this IOM show the typical connections used for additional heating back up sources or dual fuel applications. Enertech recommends a second water heater and electric heat in the fan coil, utilizing the internal electric heat as optional. Following are some considerations when determining indirect water heater choice, as well as the need for a second water heater: EAV Capacity: The EAV unit has much higher capacity than a standard electric or gas water heater, although the indirect water heater storage is for “load water”, not potable water. Therefore, the Turbomax indirect water heater operates more like an instantaneous water heater than a standard water heater. Based upon Enertech lab testing, draws of 5 gpm for a sustained period from the water heater will cause the supply temperature at the fixture to drop. Large Usage: In a typical residential application, a second water heater is not necessary for capacity reasons. In large usage applications (spa tubs and multi-head showers), a second water heater is necessary to meet the hot water needs of the customer. A gas or electric water heater can be added to the system to cover these needs. A review of the required gpm and gallons of hot water will be required to size the tank. Keep in mind that multiple shower heads could legally use as much as 10 gpm. Backup Heat Considerations, EMD (Dual Fuel Backup) The EMD model Indoor Module has connections for an external boiler that can be used for supplementing the heat pump capacity for hydronic heating and/or DHW heating. For DHW, a second water heater or a combi boiler can provide both backup heating capacity and emergency DHW heating. Enertech recommends a second water heater (or combi boiler) and electric heat in the fan coil. Redundancy: A second water heater will provide some redundancy to the system if there is a pump failure in the heat pump or some other issue not allowing the heat pump to run. In addition, during defrost, the unit will not be generating hot water. Note: Based upon the considerations above, Enertech recommends a second water heater for all EAV installations. It is a relatively inexpensive addition that provides many advantages. Enertech Global, LLC 15 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 3: Introduction & Operational Considerations Load Water Temperature (oF) Operating Conditions 180 170 160 150 140 130 120 110 100 90 80 70 60 Operating Range (Heating Mode) Supply Temperature Supply Temperature Safety Buffer Return Temperature ‐20 0 20 40 Outdoor Temperature 60 80 (oF) 100 120 Load Water Temperature (oF) Operating Range (Cooling Mode) 90 80 70 60 50 Supply Temperature 40 Return Temperature 30 40 50 60 70 80 90 100 110 120 Outdoor Temperature (oF) Enertech Global, LLC 16 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 3: Introduction & Operational Considerations Outdoor Unit Enertech Recommendations for All EAV Unit Applications Use original accessories and the stated components for the installation. Install the unit in a location with good support. Unsuitable installation locations can cause the unit to fall and cause material damage and personal injury. Installation without sufficient support can also cause vibrations and noise. Ensure that the unit can withstand strong winds and/or earthquakes. Zone Piping: All zone piping should be “Home Run” style (Page #25) to assist with purging air and to maintain lower pressure drop. Hydronic Components: System should include a boiler trim kit that includes an expansion tank, air separator/automatic air vent, and glycol feeder. In addition, an automatic air vent should be located at the highest point in the piping system. Note that a factory-installed expansion tank is included with the Indoor Module. The electrical installation must be carried out by a qualified electrician and the system must be connected as a separate circuit. Power supply with insufficient capacity and incorrect function can cause electrical shocks and fire. Use the wire size sufficient for the MCA (Minimum Circuit Ampacity) per the electrical data tables for the electrical connection, tighten the cables securely in the terminal blocks and support the wiring correctly to prevent overloading the terminal blocks. Loose connections or cable mountings can cause abnormal heat production or fire. Antifreeze: All systems must include antifreeze in the hydronic piping and Fernox F1 inhibitor or approved alternate (this is a warranty requirement). Heating only systems do not require antifreeze in the hydronic piping (except those that have exposed piping) but must include Fernox F1 inhibitor or approved alternate (this is a warranty requirement). Operation purging of air. Flush Valves: System should include flush valves to facilitate In heating, the minimum outdoor air temperature at which the unit will operate is -13 deg. F. In cooling, the minimum temperature is 38-41 deg. F. System Pump: System should include a variable speed (Delta-T or Delta-P control) or constant speed pump to provide flow from the Indoor Module to the hydronic zones. A pressure differential bypass valve must be installed to avoid dead heading the pump if zone valves are not fully open. Balance Point Temperature The balance temperature is the outdoor temperature when the heat pump’s stated output is equal to the building’s input requirement. This means that the heat pump covers the whole building’s output requirement down to this temperature. Strainer: System should include a strainer. It must be checked and cleaned as necessary to ensure proper flow rate and longterm unit reliability. Compressor Heater Unions, Adapters, Misc Fittings: All necessary unions, The unit is equipped with two heaters that heat the compressor before start-up and when the compressor is cold. When starting the unit in low ambient conditions, the compressor heater may need to be active for up to 3 hours before starting unit. adapters and fittings should be installed to allow ease of service and to meet any local code requirements. Condensation The condensate drain pan collects and drains away most of the condensate from the heat pump. It is important to the heat pump function that the condensate run-off is not positioned so that it can cause damage to the house. The condensate that collects in the trough can be substantial and should be routed away by pipe to an appropriate area, it is recommended that the shortest outdoor stretch possible is used. Run-off should be checked regularly, especially during autumn, for obstructions by leaves and branches. Clean if necessary. ⚠ CAUTION ⚠ IF THE CONDENSATE DRAIN WILL BE CONNECTED TO PIPING, DO NOT USE A TRAP. IF PIPED, HEAT TAPE MUST BE INSTALLED TO AVOID FREEZING AND BURSTING OF THE PIPING. PIPING FROM THE CONDENSATE DRAIN IS NOT REQUIRED BUT MUST BE CONSIDERED IF CONDENSATE RUNOFF WILL CAUSE DAMAGE TO THE FOUNDATION, LANDSCAPING, OR OTHER STRUCTURES THAT MAY BE AFFECTED BY CONDENSATE RUN-OFF. Back View Condensate Drain Enertech Global, LLC 17 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 4: Outdoor Installation Considerations Introduction Front View The outdoor unit must be installed on a solid level base that can support it’s weight. In many cases, a snow stand will be required to keep the lower edge of the evaporator above the level of the average local snow depth. It is recommended that the unit or snow stand would rest on a concrete foundation slab. If concrete blocks are used they must rest on suitable base as not to sink or settle over time. Note: Do not place the unit directly on the lawn or other non-solid surface. The unit should not be positioned next to noise sensitive walls, for example, next to a bedroom. Do not install the outdoor unit in the following locations: Care must be exercised during unit installation so that recirculation of the outdoor air does not occur. This causes lower output and impaired efficiency. • Locations Where potential leakage of combustible gas’ can occur. • Locations where carbon fiber, metal powder or other powder like substances could enter the air. • Locations where chemical substances could affect the unit (for example, sulfide gas, chlorine, acid, or alkaline substances can occur). • Locations near vented appliances including, driers, HRV’s, ERV’s, furnaces, boilers, fireplaces, any fossil fuel appliances or moisture producing equipment. • Locations with direct exposure to oil mist or steam. • Locations near vehicle exhaust. • Locations where machines that generate high frequency harmonics are used. • Locations where cosmetic or special sprays are often used • Locations that can be subjected to direct salty atmospheres. • Locations where large amounts of snow may accumulate. • Locations where the system is exposed to chimney smoke. • Locations where animals or pets may be fenced in. The back of the unit must be sheltered from direct wind, which negatively affects the defrost function. The air coil side of the unit should face the wall of the home. Some condensation may drip from the drainage hole located at the base of the unit. Make sure that water can properly drain way from the unit, and home. Placement Moving from the street to a unit’s final location. This unit weights roughly 400 lbs so lift accordingly using plenty of help as needed. Note: The center of gravity is offset to one side (the right side when looking at the front of the unit). If the ground allows, use a pallet truck to move the unit to the set up location. If that is not available and you must lift the unit into place please do so as described below. If the unit needs to be transported across soft ground, such as a lawn, a crane be used that can lift the unit to the installation location. When the unit is lifted with a crane, the packaging must be undisturbed. Service Area If a crane is not accessible the unit may be transported on an extended hand truck with oversized turf tires (dolly, two wheeler). The unit must be taken from its heaviest side. The distance between the unit and the house wall must be at least 14 inches. Clearance above the unit should be at least 40 inches. However, free space in front must be 40 inches for future servicing. Notice the location of the controls and the compressor towards the right side of the unit. *All measurements are in inches. Enertech Global, LLC 18 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 4: Outdoor Installation Considerations Pipe Connections 1-1/4” FIP Thread • Pipe installation must be carried out in accordance with current local and federal regulations. • The unit is not equipped with external shut off valves on the load side; these must be installed to facilitate any future servicing. • The unit should be vented through the venting valve. This is located on the load outlet leaving the unit and would be used to bleed off excess air within the water lines. See the illustration. • Be sure to use both of the supplied corrugated stainless steel flex tubing, attaching them directly to the inlet and outlet on the outdoor unit. These flexible tubes act as vibration dampers. Be sure to fit them so that an elbow is created on both lines. • When assembling the flex tubes to the unit be certain to use a two wrench system of tightening. One wrench used to back up the stationary copper fitting ,the other to turn the corresponding end of the flex tube. Tighten by moving the wrench on the flex tube. • All of the outdoor tubing must be fully insulated. 1-5/8” insulation is included with the corrugated stainless steel tubing kit . Backup Wrench Required 24 Inc 1-1/4” FIP Thread he s Snow Protection If there is a risk of snow or ice falling from a roof, a protective roof or cover must be erected to protect the heat pump, pipes and wiring. Data Serie.nr. OUT IN 711453 LEK A rt.nr. Snow Stand (Available in 12” & 18” Models) 1-5/8” Insulation included with Flex Tubing kit. 12 feet total. Enertech Global, LLC 19 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 4: Outdoor Installation Considerations Piping Between Outdoor Unit and Indoor Module OUTSIDE WALL INDOOR MODULE OUTDOOR UNIT MANUAL AIR VENT PEX OR COPPER TUBING STAINLESS STEEL FLEX TUBING KIT NOT SHOWN: OPTIONAL SUPPORT STAND FOR AREAS WITH SNOW ACCUMULATION SUGGESTED 12” OFF FLOOR NOT SHOWN: PIPING INSULATION Fernco Fitting Pipe Sleeve Piping To/From Outdoor Unit ⚠ NOTICE ⚠ SLEEVE MUST BE PROPERLY SEALED AT THE WALL PENETRATION TO PREVENT LEAKS. THE FERNCO FITTING MAY BE USED ON ONE OR BOTH SIDES OF THE WALL. THIS IS JUST ONE EXAMPLE OF ENSURING THAT THE EXPANSION/ CONTRACTION OF THE PIPING DOES NOT ADVERSELY AFFECT THE WALL INTEGRITY. OTHER METHODS, SUCH AS LINK-SEAL HYDROSTATIC SEALS ARE ACCEPTABLE, AS WELL. Foundation or Wall Enertech Global, LLC 20 End of Pipe Sleeve Must Be a Minimum of 1” Beyond Wall AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Water Quality Table Potential Problem Chemical(s) or Condition Calcium & Magnesium pH Range Total Dissolved Solids Ammonia, Ammonium Hydroxide Ammonium Chloride, Ammonium Calcium Chloride/ Sodium Chlorine Corrosion Hydrogen Sulfide Sulfates Hydrogen Carbonate Hydrogen Carbonate/ Sulfates Calcium & Magnesium/Hydrogen Carbonate Conductivity Iron Bacteria Biological Iron Oxide Suspended Solids Erosion Water Velocity Scaling Range for Stainless Steel BPHE Less than 0.1 ppm 7.5‐9 No rigid setpoint Not allowed Less than 2‐20 ppm Not allowed Not allowed Less than 0.05 ppm Less than 100 ppm Between 60 ppm and 200 ppm More than 1.5 ppm More than 0.5 ppm Less than 500 micros/cm Not allowed Less than 0.2 ppm 40 mesh strainer required Less than 5.5 m/s in the port Notes: Notes: 1. Hardness in ppm is equivalent to hardness in mg/l. 1. in ppm equivalent to hardness in mg/l. 2. Hardness Grains/ gallon = ppmisdivided by 17.1. 3. Unit internal heat exchangers are not recommended for pool applications or water outside the range of the table. 2. Grains/ gallon = ppm divided by 17.1. Secondary heat exchangers are required for pool or other applications not meeting the requirements shown above. 4. Unit Saltwater applications (approx. 25,000 require secondaryfor heat exchangers due to copper piping between heat of 3. internal heat exchangers areppm) not recommended pool applications or water outside thethe range exchanger. the table. exchangers 5. Filter forSecondary maximum ofheat 600 micron size. are required for pool or other applications not meeting the requirements Water Quality shown above. de-ionized should bedue usedtofor dilutionpiping with Enertech recommends that all hydronic berequireIdeally, 4. Saltwater applications (approx.systems 25,000water ppm) secondary heatwater exchangers copper antifreeze solutions since de-ionizing removes both corrosive tested prior to being used in any installation. between the heat exchanger. and hardness ions. Distilled water and zeolite softened water are also acceptable. Softened water, although free of hardness Water quality is important for the Load side of the system. 5. Filter maximum of 600 micronthe size. ions, may actually have increased concentrations of corrosive Due to usefor of dissimilar metals throughout system (i.e. ions and, therefore, its quality must be monitored. The stainless braze plates, cast iron pump volutes, etc.) certain Department of Natural Resources or your local municipality minerals or chemicals may build up and become detrimental can direct you to the proper testing agency. to system operation and longevity. Filling the system with good quality water that meets the specifications outlined in Note: Failure to adhere to the water quality guidelines may table above. result in loss of warranty. The quality of the water used in hydronic systems is very important. In closed loop systems the dilution water (water Note: Once the system has been flushed and filled, Enertech mixed with antifreeze) must be of high quality to ensure recommends the use of Fernox F1 (Enertech P/N: F-57880) adequate corrosion protection. Water of poor quality contains water treatment products in order to keep the system clean ions that make the fluid “hard” and corrosive. Calcium and and running smooth for years to come. magnesium hardness ions build up as scale on the walls of the system and reduce heat transfer. These ions may also react with the corrosion inhibitors in glycol based heat transfer fluids, causing them to precipitate out of the solution and rendering the inhibitors ineffective in protecting against corrosion. In addition, high concentrations of corrosive ions, such as chloride and sulfate, will eat through any protective layer that the corrosion inhibitors form on the walls of the system. AV : MD/ME - Rev. A Models Enertech Global, LLC 21 Installation and Operations Manual Section 5: Unit Piping Example (steps for sizing typical residential system piping) System includes a model 060 heat pump with one 3 ton fan coil and 3 radiant zones. Two radiant zones each have 5 circuits and one radiant zone has 3 circuits (13 total circuits). All circuits are 1/2” PEX piping. Flow Rates and Piping Sizing Successful design of the system must also include pipe diameter and layout. The following guidelines should be considered for all hydronic designs: • Proper Flow Rate: There could be two different flow rates on each side of the Indoor Module, depending upon the size and number of zones and the size of the heat pump. Supply/return lines for the heat pump side of the Indoor Module must be sized for the heat pump flow rate; supply/return lines on the system pump side of the Indoor Module must be sized based upon the number and size of connected zones. • Supply/Return Pipe Diameter: Any hydronic system with parallel piping to various zones requires large enough piping diameter to provide sufficient flow to all zone, but also to assist in purging air from the system. The flow rate though the supply/return lines must be high enough to achieve 2 feet per second velocity in all of the parallel branches. “Home Run” style piping, as mentioned above, is helpful in purging air, as well. • Low Pressure Drop: Selecting Pipe diameter for supply/ return lines will help ensure low pressure drop and good performance. The radiant heating calculations determined that the PEX loops will be at 9” O.C. spacing and that the flow rate per circuit will be 0.42 GPM (5.5 GPM total). The system will use 25% Fernox Alphi-11 propylene glycol antifreeze. The following steps should be used to determine pipe sizing: 1. Determine flow rate and pipe diameter for piping from Indoor Module to the “Home Run” hydronic zones. The fan coil needs 9 GPM, and the 1/2” radiant tubing could be up to 0.75 GPM per circuit, but since 0.42 GPM was specified, the application will use the specified flow rate (13 x 0.42 = 5.5 GPM). Total flow rate is 14.5 GPM (9 + 5.5). The supply/return lines from the Indoor Module to the zones should be 1-1/4” copper or 1-1/2” PEX. 2. Similar calculations should be done for each zone. For the fan coil zone (9 GPM), 1” copper or 1-1/4” PEX should be run to the fan coil; for the 5 circuit manifold, 3/4” PEX may be used (same for the 3 circuit manifold). “Home Run” Style Piping (Page #25) Enertech recommends “Home Run” style piping to help facilitate air removal, but also for ease of access to the zone valves. In the “Branch” style piping, branches can be difficult to purge, depending upon the size of the supply/return lines feeding the branches, especially if fan coils are piped in this manner. Recommended Flow Rates Heat Pump EAV040 – 12 GPM EAV060 – 15 GPM Note: Purging air from the system is one of biggest challenges for hydronic systems. Flow Sensors installed in this equipment are extremely sensitive to micro-bubbles. MPH Fan Coils/Air Handlers & ACH/MCH A-Coils MPH/ACH/MCH024 – 6 GPM MPH/ACH/MCH036 – 9 GPM Piping Design Flow Capacities Pipe Diameter/Type MPH/ACH/MCH048 – 13 GPM Maximum Flow Rate (GPM) Floor Loop* Supply/Return** 0.75 N/A 1 1.25 4 7 12 MPH/ACH/MCH060 – 13 GPM Multi-Aqua Fan Coils 1/2” PEX 5/8” PEX 3/4” PEX 3/4” Copper or 1” PEX 1” Copper or 1-1/4” PEX 1-1/4” Copper or 1-1/2” N/A 17 PEX 1-1/2” Copper 25 2” Copper 45 * Based upon 300 ft. circuits. **Based upon 25ft. length (one-way) and 4 elbows with water. When using antifreeze, increase pipe size to the next size if close to the maximum flow rate. High-wall units Console Units MHQWW-9 – 3 GPM CFFWA-3 – 3 GPM MHQWW-12 – 6 GPM CFFWA-6 – 4.5 GPM MHQWW-18 – 6 GPM CFFWA-8 – 5.5 GPM MHQWW-24 – 7 GPM CFFWA-12 – 8 GPM MHQWW-36 – 10 GPM CFFWA-16 – 10.5 GPM CFFWA-20 – 12.5 GPM Radiant Floor 1/2" PEX – 0.5 to 0.75 GPM per circuit 5/8" PEX – 0.75 to 1 GPM per circuit 3/4" PEX - 1 to 1.25 GPM per circuit Example: A 5 loop manifold with 1/2” PEX circuits would need supply/return piping capable of supplying 2.5 to 3.75 GPM DHW Piping Use flow rate for heat pump Enertech Global, LLC 22 AV : MD/ME - Rev. A Models Installation and Operations Manual e manual before providing to building owner. Section 5: Unit Piping Load Piping drawing below). All interior piping must be sized for proper flow rates and pressure loss. Insulation should be used on all inside piping when minimum temperatures are expected to be below the dew point (less than approximately 50°F). Use the table below for insulation sizes with different pipe sizes. All pipe insulation should be made of closed cell and have a minimum wall thickness of 3/8” for interior piping. Piping between the Outdoor Unit and the Indoor Module should be at least 3/4” wall thickness. All piping insulation should be glued and sealed to prevent condensation and dripping. Interior piping may consist of the following materials: PEX, copper, or stainless steel hose (hose kit only). PVC and other piping types are not recommended. Table: Pipe Insulation Piping Material 1” IPS Hose 1” IPS PE Bypass Valve Insulation Description 3. The minimum pump Follow speedthe is set tobelow allowfor 5 GPM through the bypass valve steps valve settings. with all zones closed (see page 16)valve if hydraulic separator or buffer tank 1. The bypass setting should be adjusted during the is not 1-1/4” ID 3/8” Wall Startup Wizard when setting the minimum pump speed used (a hydraulic separator or buffer tank is recommended). 1-3/8” ID - 3/8” Wall (manual mode). 2. Set the adjustment indicator at 4.5 on the bypass valve. 2” IPS PD 2-1/8” ID - 3/8” Wall 3. In the Startup Wizard, start with the default minimum pump speed at 60%. Open the zone valve for the smallest zone (lowest flow rate). It will be important to know the designfor flow rate forair thefrom smallest example, the WV I.O NOTICE: A flush cart is required purging thezone. loadFor side piping.if See smallest zone has 5 - 1/2” PEX circuits, the design flow Figures to 6c for valve arrangement Section (Flushing and of Filling) THE EAV MONITORS FEEDBACK FROM THE 6a CONNECTED rate is typicallyand 2.5 to 4 GPM.6The combination the for flushin VARIABLE SPEED PUMP AND WILL NOT OPERATE minimum pump speed and the bypass should provide a WITHOUT IT. A FLOW FAULT WILL OCCUR. minimum for 5 GPM. 4. Turn the adjustment indicator counter-clockwise to allow the combined flow of the smallest zone and the bypass valve to equal 5 GPM. The minimum pump speed may Load Piping Installation need to be adjusted to higher than 60%, depending upon It is important that the load side piping of the EAV system is the size of the zone. sized properly for the required flow rates and is flushed and filled with good quality water and treatment. This will help ensure that the longevity of the pump(s), braze plates, and Other Hydronic Components other load side components. An automatic air elimination device and expansion tank are factory installed in the indoor unit. They help remove any Piping Arrangement and Components micro-bubbles still remaining after purging and filling. The The Wye Strainer, which contains a #40 mesh, will collect expansion tank maintains minimum pressure in the hydronic debris left in the piping after the system has been flushed and system for proper pump operation. filled. Most local codes require certain components be installed Per the installation diagrams, boiler drains and isolation valves within the system. Local codes should be followed when need to be integrated into the load piping for proper flushing determining the exact requirements. A pressure relief valve of the system at start up, as well as for future service. Full may be required, which should be rated for 30 PSI and port isolation valves should be used in order to ensure low terminated 6” from the floor surface. Additionally, back-flow pressure drop throughout the system. preventer may be required and should be installed if a makeup water line is connected from the water source to the load Generally, the recommended load side piping arrangement side piping of the system. is designed as a parallel direct return system. Each zone is in parallel and returns directly to the heat pump. Zone valves Note: Even if a back-flow preventer is not required, it is should be utilized on each circuit to control the solution flow highly recommended. to each manifold/zone/circuit or distribution device. Enertech recommends zone valves have a CV rating of 8.9 or higher to help guarantee proper flow and low pressure drop throughout the system. All zone valves must be on/off style valves. 1-1/4” IPS PE 1-5/8” ID - 3/8” Wall ⚠ NOTICE ⚠ Note: If it is determined that any of the zone’s flow rates are less than 5 GPM, a pressure differential bypass valve is required for proper unit operation (Enertech P/N: ADBV4A). Enertech Global, LLC 23 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping System Accessories Selection Table Description Order with Unit? Enertech Part # Notes Automatic Air Vent, Taco Y 03P017-01BN Install at highest point in system Boiler Trim Kit Y See Notes Expansion tank, air separator, automatic air vent included; press. reduc. vlv./backflow preventer to be sourced locally. 1" Taco Geo-Sentry Zone Valve Y ATEBV5C One per radiant manifold and one per fan coil Turbomax indirect water heater Y See Notes Must be ordered with unit as part of unit as 45 or 65 gallon tank Brass 3-way valve in cabinet Y 03P016001BN Two are included with unit. Two more should be ordered for hydronic piping. Double O-ring x 1" FPT (pair) Y AGA5FPT Two sets should be ordered for external flush valves. Boiler drain valve Included 11080003001 Part of plumbing kit Strainer Included 08P020-01NN Internal to Indoor Module System Pump Y See Notes Differential bypass valve Included ADBV4A Air Handler(s) Y See Notes AGSIPV3A (UPS26-115V const. spd. insul. cabinet w/isol. vlvs.) OR: AGSIPV7A (UPM-XL var. spd. 230V insulated cabinet w/isol. vlvs.) + AGFCVSC2A controller) Internal to Indoor Module Review Enertech price books for MPH Series air handers Radiant Tubing/Accessories Y See Notes Optional elect. or gas wtr htr Y N/A Supplied by contractor Pressure Relief Valve Included N/A Included with indirect water heater Ball Valves Y N/A Supplied by contractor Unions, adapters, misc. fittings Y N/A Supplied by contractor Pressure gauge N/A N/A Included with indirect water heater Pump Mounting • Motor/Electrical Box: The pump is a wet rotor pump. The motor shaft must be horizontal to keep the bearings properly lubricated. Do not put the pump on its back or pointing down (vertical shaft) because this orientation can cause premature pump failure. In most cases, the direction of the electrical box is important to keep any condensation out of the windings. Some pumps have a yellow sticker that is on the head of the pump, indicating the proper direction. It is important to follow best practices for mounting the system pump to provide long life, serviceability, and the ability to purge air out of the system. Following are two important tips for ensuring a good installation: • Pumping Direction: Pumping up is the best way to mount the pump. If there is air in the system, it will have the best chance of the air getting though the pump, to the air separator, and out of the system. If the pump air locks, turn the pump off and the air will go up out of the impeller and will be replaced with water. Restart the pump and it will start pumping. The air will flow to the air separator. In most cases the air will go through the pump. Pumping horizontally will work as long as there are small pockets of air in the system. They will keep moving around the system with the water to the air separator. If there are big pockets of air in the system, this will create problems for horizontal mounting. The pump will cavitate, lose water flow, overheat, and fail. If the pump does get air locked, there will need to be a purge port so that the air can be flushed out of the pump and system. Pumping down is the poorest way to mount a pump. If there is air in the system it will get trapped in the pump, causing it to cavitate, loose water flow, overheat, and fail. The air creates resistance in the down flowing water because the air wants to flow up. If the pumps loses flow or stops, the air comes back up the pipe into the impeller, amplifying the problem. If the pump gets air locked, there will need to be a purge port so that the air can be flushed out of the pump and system. Enertech Global, LLC Review Enertech price books for Infloor products Piping Diagrams Not all components are shown, such as union fittings, piping adapters/reducers, and other components. Schematics are designed for illustrating the arrangement/function of the components. Always use best practices when considering the location of the various components. For example, the expansion tank must always be on the suction side of the pump; check valves (if applicable) must always be on discharge of the pump. 24 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Piping Diagram - Flow Rates and Piping Sizing To Radiant Floor Loops From Radiant Floor Loops To Radiant Manifold 3 To Radiant Manifold 2 To Radiant Manifold 1 To Fan Coil From Radiant Manifold 3 From Radiant Manifold 2 From Radiant Manifold 1 From Fan Coil Branch 1 Branch 2 Branch 2 This por�on of the piping/ valves located in mechanical room Branch 1 Branch 3 Fan Coil Branch 3 Branch 4 Branch 4 To Indoor Module “HOME RUN” STYLE PIPING To Indoor Module From Indoor Module From Indoor Module This por�on of the piping/ valves located in mechanical room “BRANCH” STYLE PIPING Anti-Scald Valve Piping Connections Cold Water Inlet Anti-Scald Valve Tempered Water to Faucets/Fixtures ⚠ WARNING ⚠ WATER TEMPERATURES ABOVE 120° F CAN CAUSE SEVERE PHYSICAL INJURY IN THE FORM OF SCALDING OR BURNS. AN ANTI-SCALD VALVE MUST BE INSTALLED AT THE HOT WATER TANK OUTLET WITH THE VALVE SETTING PROPERLY ADJUSTED TO PREVENT SCALDING OR BURNS. HOT COLD Hot Water Tank Figure 12e: Anti-Scald Valve Piping Connections WARNING: WATER TEMPRATURES ABOVE 120 DEG F CAN CAUSE SEVERE PHYSICAL INJURY IN THE FORM OF SCALDING OR BURNS. AN ANTI-SCALD VALVE MUST BE INSTALLED AT THE HOT WATER TANK OUTLET WITH THE VALVE SETTING PROPERLY ADJUSTED TO PREVENT SCALDING OR BURNS. Enertech Global, LLC 25 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Piping Diagram - Indoor Module DOMESTIC COLD WATER NOTE 6 RADIANT FLOOR HEATING ZONE 2 RADIANT FLOOR HEATING ZONE 3 NOTE 5 NOTE 5 DOMESTIC HOT WATER HYDRONIC AIR HANDLER OR PANEL RADIATOR ZONE 1 NOTE 5 NOTE 5 NOTE 5 NOTE 4 HOT NOTE 6 ΔP TURBOMAX 65 WATER HEATER FOR TYPICAL RESIDENTIAL APPLICATIONS MAKE-UP WATER OR GLYCOL FEEDER Expan. Tank INDOOR UNIT NOTE 5 FACTORY INSTALLED INTERNAL TO UNIT LOAD IN (FOR LARGER DOMESTIC HOT WATER NEEDS SEE DHW SECTION IN IOM) LOAD OUT DHW OUT COLD DHW IN NOTE 5 LOAD IN LOAD OUT LEGEND WYE STRAINER PRESSURE REDUCING VLV AUTOMATIC AIR VENT BACK-FLOW PREVENTER ACTUATED ZONE VALVE AIR SEPARATOR ΔP DIF. PRESSURE BYPASS VALVE 3-WAY FLUSH VALVE ISOLATION BALL VALVE ANTI-SCALD OR MIXING VALVE BOILER DRAIN PRESSURE GAUGE NOTES: 1. INSTALLATION DIAGRAM SHOWN ABOVE IS AN EXAMPLE OF A TYPICAL (RECOMMENDED) INSTALL. ADDITIONAL ZONES ARE ALLOWED, AS WELL AS ALERNATE PIPING LAYOUTS. 2. UNIT CONFIGURATION INCLUDES INDIRECT DHW TANK. 3. A HOSE KIT HAS BEEN PROVIDED WITH THE UNIT AND SHOLD BE INSTALLED AT THE OUTDOOR UNIT. 4. ALL PIPING MUST BE “HOME RUN” STYLE. ALL RADIANT MANIFOLDS AND AIR HANDLER UNIT ZONE VALVES SHOULD BE LOCATED IN THE MECHANICAL ROOM TO FACILITATE FLUSHING/PURGING OF AIR FROM SYSTEM. 5. FIELD PROVIDED FOR FUTURE SERVICE 6. MOUNT AT THE HIGHEST POINT ON THE RETURN LINE. 7. ALWAYS CHECK LOCAL CODE REQUIREMENTS TO ENSURE THAT THE INSTALLATION MEETS CURRENT REGULATORY STANDARDS. Enertech Global, LLC 26 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Piping Diagram - Radiant Floor DOMESTIC COLD WATER DOMESTIC HOT WATER RADIANT FLOOR HEATING ZONE 2 RADIANT FLOOR HEATING ZONE 3 NOTE 5 NOTE 5 NOTE 5 NOTE 5 NOTE 4 HOT NOTE 6 ΔP TURBOMAX 65 WATER HEATER FOR TYPICAL RESIDENTIAL APPLICATIONS MAKE-UP WATER OR GLYCOL FEEDER Expan. Tank INDOOR UNIT NOTE 5 FACTORY INSTALLED INTERNAL TO UNIT LOAD IN (FOR LARGER DOMESTIC HOT WATER NEEDS SEE DHW SECTION IN IOM) LOAD OUT DHW OUT COLD DHW IN NOTE 5 LOAD IN LOAD OUT LEGEND WYE STRAINER PRESSURE REDUCING VLV AUTOMATIC AIR VENT BACK-FLOW PREVENTER ACTUATED ZONE VALVE AIR SEPARATOR ΔP DIF. PRESSURE BYPASS VALVE 3-WAY FLUSH VALVE ISOLATION BALL VALVE ANTI-SCALD OR MIXING VALVE BOILER DRAIN PRESSURE GAUGE NOTES: 1. INSTALLATION DIAGRAM SHOWN ABOVE IS AN EXAMPLE OF A TYPICAL (RECOMMENDED) INSTALL. ADDITIONAL ZONES ARE ALLOWED, AS WELL AS ALERNATE PIPING LAYOUTS. 2. UNIT CONFIGURATION INCLUDES INDIRECT DHW TANK. 3. A HOSE KIT HAS BEEN PROVIDED WITH THE UNIT AND SHOLD BE INSTALLED AT THE OUTDOOR UNIT. 4. ALL PIPING MUST BE “HOME RUN” STYLE. ALL RADIANT MANIFOLDS AND AIR HANDLER UNIT ZONE VALVES SHOULD BE LOCATED IN THE MECHANICAL ROOM TO FACILITATE FLUSHING/PURGING OF AIR FROM SYSTEM. 5. FIELD PROVIDED FOR FUTURE SERVICE 6. MOUNT AT THE HIGHEST POINT ON THE RETURN LINE. 7. ALWAYS CHECK LOCAL CODE REQUIREMENTS TO ENSURE THAT THE INSTALLATION MEETS CURRENT REGULATORY STANDARDS. Enertech Global, LLC 27 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Piping Diagram - Hydronic Air Handler DOMESTIC COLD WATER NOTE 6 DOMESTIC HOT WATER HYDRONIC AIR HANDLER OR PANEL RADIATOR ZONE 1 NOTE 5 NOTE 5 NOTE 5 HOT NOTE 6 ΔP TURBOMAX 65 WATER HEATER FOR TYPICAL RESIDENTIAL APPLICATIONS MAKE-UP WATER OR GLYCOL FEEDER Expan. Tank INDOOR UNIT NOTE 5 FACTORY INSTALLED INTERNAL TO UNIT LOAD IN (FOR LARGER DOMESTIC HOT WATER NEEDS SEE DHW SECTION IN IOM) LOAD OUT DHW OUT COLD DHW IN NOTE 5 LOAD IN LOAD OUT LEGEND WYE STRAINER PRESSURE REDUCING VLV AUTOMATIC AIR VENT BACK-FLOW PREVENTER ACTUATED ZONE VALVE AIR SEPARATOR ΔP DIF. PRESSURE BYPASS VALVE 3-WAY FLUSH VALVE ISOLATION BALL VALVE ANTI-SCALD OR MIXING VALVE BOILER DRAIN PRESSURE GAUGE NOTES: 1. INSTALLATION DIAGRAM SHOWN ABOVE IS AN EXAMPLE OF A TYPICAL (RECOMMENDED) INSTALL. ADDITIONAL ZONES ARE ALLOWED, AS WELL AS ALERNATE PIPING LAYOUTS. 2. UNIT CONFIGURATION INCLUDES INDIRECT DHW TANK. 3. A HOSE KIT HAS BEEN PROVIDED WITH THE UNIT AND SHOLD BE INSTALLED AT THE OUTDOOR UNIT. 4. ALL PIPING MUST BE “HOME RUN” STYLE. ALL RADIANT MANIFOLDS AND AIR HANDLER UNIT ZONE VALVES SHOULD BE LOCATED IN THE MECHANICAL ROOM TO FACILITATE FLUSHING/PURGING OF AIR FROM SYSTEM. 5. FIELD PROVIDED FOR FUTURE SERVICE 6. MOUNT AT THE HIGHEST POINT ON THE RETURN LINE. 7. ALWAYS CHECK LOCAL CODE REQUIREMENTS TO ENSURE THAT THE INSTALLATION MEETS CURRENT REGULATORY STANDARDS. Enertech Global, LLC 28 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping ⚠ WARNING ⚠ Flush Cart Design The Enertech Manufacturing flush cart has been designed to effectively and efficiently flush the earth loop and to facilitate injecting and mixing of the antifreeze. MAKE SURE TO ISOLATE THE DOMESTIC WATER TANK BECAUSE THE RELIEF VALVE INSTALLED IN THE TANK WILL PURGE WATER AS THE SYSTEM IS FLUSHED. Removing Debris During Flushing Flushing and Filling System Most flow center or pump failures are a result of poor water quality or debris. Debris entering the loop during fusion and installation can cause noise and premature pump failure. Enertech recommends a double flush filtering method during purging. When purging, use a 100 micron bag filter until air bubbles are removed. Remove the 100 micron bag, replace it with a 1 micron bag and restart the flushing. The system needs to be flushed of air and debris, and filled before it is turned on and put into service. All systems have dirt and debris from the piping, soldering, etc. Enertech recommends using a flush cart to the purge the system. The flush cart should utilize a ½ HP pump, which is sufficient for almost all residential hydronic systems, as long as each circuit is isolated and flushed one at a time. Features of the flush cart: • Cylinder: HDPE, SDR15.5, 10” dia. (10 Gallons) • Pump: Myers High Head QP15, 1.5hp, 115V • Hose connections: Cam Lock quick connects - 1-1/2” hoses • Hand Truck: 600lb rating with pneumatic tires • Wiring: Liquid Tight metal on/off switch • Tubing: SDR11 HDPE • Connections: 2 - 3/4” connections for antifreeze and discharge • Drain: one on the pump and the tank Step 1: Isolation 1. Isolate each circuit, including the heat pump and domestic hot water tank. 2. Flush each zone of air, and fill each zone with water (radiant tubing, air handler, etc.). *Step 2: Domestic Hot Water This step can be skipped if the unit is not equipped with hot water capability. 1. Open the isolation valves and flush/ fill the hot water tank (if equipped), making sure to keep the system pressure below 30 PSI. Note: If the pressure gets above 30 PSI, the relief valve on the tank will purge water. 2. Close the isolations valves Enertech Flush Cart: Step 3: Heat Pump 1. Open the isolation valves and flush/ fill the heat pump, making sure that the water flow direction is as it would be in normal operation. Note: Water flow direction is crucial during this step. If the water flow is backwards, the Wye Strainer is not protecting the braze plate heat exchangers from the miscellaneous debris that hasn’t been flushed out into the flush cart. 2. Once the entire system has been flushed and filled, the antifreeze and water treatment can be added, using the flush cart to add and mix the treatment. All zones should be open during this process, so that proper mixing can take place. 3. Take multiple readings, and check the antifreeze percentage, as the system is being mixed. 4. The final step is to go through the set up wizard on the controller (HMI) to energize the diverting valve (if equipped) and verify that the last bit of air is removed from the system. 5. Turn the 3-way valves on the flush valves back to the normal operation mode, which closes the flush port connections. 6. Open the ball valves on the flush cart to relieve pressure on the hoses. Disconnect the hoses from the flush valves. Note: If any small amount of air is still in the system, the air elimination device will remove it and the make-up water, as well as the expansion tank, will keep pressure on the system. Recommended pressure setting is 12-17 PSI cold = 15-19 PSI hot. Flush Cart Pump Curve: Meyers QP-15 1-1/2 HP Self-Priming Centrifugal Pump 120 110 Total Head in Feet 100 90 25’ 80 70 20’ 60 15’ 50 40 30 20 10 0 SUCTION LIFT 10 20 Enertech Global, LLC 30 40 50 60 CAPACITY - U.S. GPM 70 80 The entire system is now flushed, filled, treated, and ready to be put into operation. 90 29 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Flushing Diagram - Outdoor Unit Heat Exchanger and Piping OUTSIDE WALL OUTDOOR UNIT MANUAL AIR VENT USE AGFP DOUBLE O-RING X CAM ADAPTERS “OFF” TO THE TOP “OFF” TO THE TOP FLUSHING HOSES (MUST FLOW IN DIRECTION OF STRAINER) Enertech Global, LLC 30 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Flushing Diagram - Hot Water Tank RADIANT FLOOR HEATING ZONE 2 RADIANT FLOOR HEATING ZONE 3 HYDRONIC AIR HANDLER OR PANEL RADIATIOR ZONE 1 DOMESTIC COLD WATER DOMESTIC HOT WATER HOT MAKE-UP WATER OR GLYCOL FEEDER LOAD IN TURBOMAX 65 WATER HEATER FOR TYPICAL RESIDENTIAL APPLICATIONS BYPASS VALVE SET TO 4.5 PSI LOAD OUT DHW OUT FLUSH BLOCKS VALVE “OFF” THE BOTTOM PORT COLD DHW IN LOAD IN *FLUSHING CART (USE AGFP DOUBLE 0-RING x CAM ADAPTERS) Enertech Global, LLC LOAD OUT *FLUSHING BUCKET (USE AGAMGH DOUBLE 0-RING x MALE GARDEN HOSE ADAPTERS) 31 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Flushing Diagram - Distribution Zones RADIANT FLOOR HEATING ZONE 2 RADIANT FLOOR HEATING ZONE 3 HYDRONIC AIR HANDLER OR PANEL RADIATIOR ZONE 1 DOMESTIC COLD WATER DOMESTIC HOT WATER HOT MAKE-UP WATER OR GLYCOL FEEDER LOAD IN TURBOMAX 65 WATER HEATER FOR TYPICAL RESIDENTIAL APPLICATIONS BYPASS VALVE SET TO 4.5 PSI LOAD OAD OUT O DHW OUT FLUSH BLOCKS VALVE “OFF” THE BOTTOM PORT COLD DHW IN LOAD AD IN *FLUSHING CART (USE AGFP DOUBLE 0-RING x CAM ADAPTERS) Enertech Global, LLC LOAD OUT *FLUSHING BUCKET (USE AGAMGH DOUBLE 0-RING x MALE GARDEN HOSE ADAPTERS) 32 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 5: Unit Piping Flushing Diagram - Indoor Module RADIANT FLOOR HEATING ZONE 2 RADIANT FLOOR HEATING ZONE 3 HYDRONIC AIR HANDLER OR PANEL RADIATIOR ZONE 1 DOMESTIC COLD WATER DOMESTIC HOT WATER HOT MAKE-UP WATER OR GLYCOL FEEDER LOAD IN TURBOMAX 65 WATER HEATER FOR TYPICAL RESIDENTIAL APPLICATIONS BYPASS VALVE SET TO 4.5 PSI LOAD OUT DHW OUT FLUSH BLOCKS VALVE “OFF” THE BOTTOM PORT COLD DHW IN LOAD IN *FLUSHING CART (USE AGFP DOUBLE 0-RING x CAM ADAPTERS) Enertech Global, LLC LOAD OUT *FLUSHING BUCKET (USE AGAMGH DOUBLE 0-RING x MALE GARDEN HOSE ADAPTERS) 33 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 6: Antifreeze Antifreeze Overview The following are some general observations about the types of brines presently being used: If the unit will be used for cooling, antifreeze must be added on the load side of the system to protect the braze plate heat exchanger from rupturing. Chilled solution set points are in the 40’s °F. The load solution so within the heat exchanger, could be near freezing. To protect against freezing. Enertech recommends the use of Propylene Glycol (20-25%) for the load side antifreeze. Additional inhibitor may be required if the concentration is less than 25% to 30% (depending upon brand) to provide corrosion protection and prevent bacterial growth. Methanol: Wood grain alcohol that is considered toxic in pure form. It has good heat transfer, low viscosity, is non-corrosive, and is mid to low price. The biggest down side, it is flammable in concentrations greater than 25%. Ethanol: Grain alcohol, which by the ATF (Alcohol, Tobacco, Firearms) department of the U.S. government, is required to be denatured and rendered unfit to drink. It has good heat transfer, mid to high price, is non-corrosive, non-toxic even in its pure form, and has medium viscosity. It is also flammable with concentrations greater than 25%. Note that the brand of ethanol is very important. Make sure it has been formulated for the geothermal industry. Some of the denaturants are not compatible with HDPE pipe (for example, solutions denatured with gasoline). Important: Propylene glycol concentrations below 30% typically require additional inhibitors to be added to the solution. Enertech recommends Fernox F1. Note: The minimum recommended air handler size is 2 tons. Antifreeze Characteristics Propylene Glycol: Non-toxic, non-corrosive, mid to high price, poor heat transfer in high concentrations, and potential for high viscosity when cold (in high concentrations). It has also been known to form a “slime-type” coating inside the pipe when inhibitors are not used. Do not use food grade glycol, since it does not include inhibitors. A 25% to 30% brine solution is a minimum concentration for required inhibitors, depending upon brand of glycol. If using a lower concentration (e.g. 20% provides 19°F freeze protection), additional inhibitors must be added. Note that some states/provinces have toxicity requirements that must be verified based upon the chemical composition of the inhibitors. Selection of the antifreeze solution for closed loop systems require the consideration of many important factors, which have long-term implications on the performance and life of the equipment. Each area of concern leads to a different “best choice” of antifreeze. There is no “perfect” antifreeze. Some of the factors to consider are as follows (Brine = antifreeze solution including water): Safety: The toxicity and flammability of the brine (especially in a pure form). Cost: Prices vary widely. Thermal Performance: The heat transfer and viscosity effect of the brine. Corrosiveness: The brine must be compatible with the system materials. Stability: Will the brine require periodic change out or maintenance? Convenience: Is the antifreeze available and easy to transport and install? Codes: Will the brine meet local and state/provincial codes? Ethylene Glycol: Considered toxic and is not recommended for use in earth loop applications. Antifreeze Charging Calculate the total amount of pipe in the system and use the following Pipe Fluid Volume Table to calculate the amount of volume for each specific section of the system. Add the entire volume together, and multiply that volume by the proper antifreeze percentage needed (See Antifreeze Percentages by Volume) for the freeze protection required in your area. Then double check calculations during installation with the proper hydrometer and specific gravity chart (See Antifreeze Specific Gravity Table) to determine if the correct amount of antifreeze was added. ⚠ CAUTION ⚠ HYDRONIC LOOPS MUST BE ANTIFREEZE PROTECTED. INSUFFICIENT AMOUNTS OF ANTIFREEZE MAY CAUSE SEVERE DAMAGE AND MAY VOID WARRANTY. HYDRONIC LOOP ANTIFREEZE MUST BE NONFLAMMABLE. NEVER OPERATE WITH HYDRONIC LOOP FLOW RATES LESS THAN SPECIFIED. CONTINUOUS OPERATION AT LOW FLOW OR NO FLOW MAY CAUSE SEVERE DAMAGE AND MAY VOID WARRANTY. Pipe Fluid Volume Table ⚠ WARNING ⚠ IF MORE THAN 30% ANTIFREEZE IS ADDED, HEAT TRANSFER AND VISCOSITY ISSUES MAY ARISE. BE SURE TO KNOW WHAT TYPE OF ANTIFREEZE IS BEING USED, AND IF IT IS PURE OR PRE-MIXED. ⚠ WARNING ⚠ USE EXTREME CARE WHEN OPENING, POURING, AND MIXING FLAMMABLE ANTIFREEZE SOLUTIONS. REMOTE FLAMES OR ELECTRICAL SPARKS CAN IGNITE UNDILUTED ANTIFREEZES AND VAPORS. USE ONLY IN A WELL VENTILATED AREA. DO NOT SMOKE WHEN HANDLING FLAMMABLE SOLUTIONS. FAILURE TO OBSERVE SAFETY PRECAUTIONS MAY RESULT IN FIRE, INJURY, OR DEATH. NEVER WORK WITH 100% ALCOHOL SOLUTIONS. Enertech Global, LLC Type Size Copper Copper Copper HDPE HDPE HDPE HDPE HDPE 1” CTS 1.25” CTS 1.5” CTS .75” SDR11 1” SDR11 1.25” SDR11 1.5” SDR11 2” SDR11 Volume Per 100ft US Gallons 4.1 6.4 9.2 3.0 4.7 7.5 9.8 15.4 Notes: Unit coaxial heat exchanger = 1 Gallon Flush Cart = 8-10 Gallons 10’ of 1” Rubber Hose = 0.4 Gallons 34 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 6: Antifreeze Antifreeze Percentages by Volume Table Type of Antifreeze Propylene Glycol Methanol 10°F (-12.2°C) 30% 21% Ethanol 26% Heat Transfer Fluid (HTF) Minimum Temperature for Freeze Protection 15°F (-9.4°C) 20°F (-6.7°C) 25% *20% 17% 13% 23% 25°F (-3.9°C) *13% 5% 18% 13% Mix according to manufacturer’s directions on container label Note: Antifreeze solutions are shown in pure form - not premixed HTF is a premixed Methanol Solution *Concentrations below 25-30% (consult manufacturer) typically require additional inhibitors. Antifreeze Specific Gravity Table 1.0500 1.0400 1.0300 Glycols are heavier than water (>1) Specific Gravity 1.0200 1.0100 1.0000 Pure water has a specific gravity of 1 0.9900 0.9800 Alcohols are lighter than water (<1) 0.9700 0.9600 0 5 10 15 20 25 30 Freeze Protection, deg F Ethanol Methanol Propylene Glycol Notes: 1. Consult with your representative or distributor if you have any questions regarding antifreeze selection or use. 2. Some antifreeze suppliers and manufacturers recommend the use of either de-ionized or distilled water with their products. Some brands are designed to work with tap water. Consult the antifreeze manufacturer’s technical data. Enertech Global, LLC 35 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 6: Antifreeze Monobloc Requirements Example: The EAV unit is a monobloc design, which means that the refrigerant circuit is completely contained in the outdoor unit and therefore no refrigerant line set is required. Piping between the outdoor unit and indoor module includes a water/antifreeze mixture that must have sufficient concentration of antifreeze not only for freeze protection to keep the solution from freezing while operating, but also sufficient burst protection for times where power may be interrupted to the unit during extremely cold temperatures. The following table shows the Extreme Annual Temperature for Chicago at -17.3 deg F. For adequate burst protection, a concentration of 30% Alphi-11 should be used to protect the system. In most areas of North America, 25% to 30% is sufficient for burst protection. In Northern U.S. and some Canadian climates, 35% or more must be used. Enertech recommends 25% or higher concentration, depending upon location. Lower concentration provides better heat transfer and lower viscosity, but may not provide enough burst protection. Enertech recommends Fernox Alphi-11 propylene glycol antifreeze in all systems where the minimum outdoor temperature is below freezing and/or in systems that are making chilled water for cooling applications. This is a warranty requirement. The following table provides guidelines for determining the correct amount of antifreeze. Enertech recommends using the 20 year Extreme Annual Temperature shown in the ASHRAE Fundamentals Handbook, Environment Canada, or local weather data. Antifreeze Percentages by Volume (Fernox Alphi-11 propylene glycol) Concentration Protection OF Burst Point OF 25% 30% 35% 40% 45% 50% 12.2 0 5 -20 -0.4 -40 -7.6 -60 -16.6 -70 -29.2 -80 Example: Annual Temperature (Chicago) Extreme Annual Temperature, deg F Standard DeMean viation Min Max Min Max -3.2 90.5 7.5 3.9 Enertech Global, LLC Period Values of Extreme Temperature, deg F 5 years Min -8.6 10 years Max 93.2 Min -13.1 36 Max 95.5 20 years Min -17.3 Max 97.7 50 years Min -22.8 Max 100.5 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 7: Field Wiring Introduction Communication • EAV does not include a circuit breaker on the incoming power supply. The heat pump’s supply cable must be connected to a circuit breaker. A disconnect must be installed near the unit per local code requirements. • The routing of cables for heavy current and signals should be made out through the cable openings on the heat pump’s right-hand side, seen from the front. • The communication cable must be a shielded cable and be connected between EAV terminal block X22 and the indoor module/control module • Connect the flushing pump to the indoor module/control module. EAV communicates with Enertech indoor modules/control modules by connecting a 3-conductor, shielded cable (max area 0.75 mm²) to terminal block X22:1–4, as shown in the Softwar e version following Optional images. connections In order for F2120 to be able to communicate with indoor module (VVM ) / contr ol module (SMO ) the softwar e version must be accor ding to the table. Communication Disconnect the inol theIndoor EAV Unit F2120 communicates with connections NIBE indoor modules/contr module / modules by connecting a three core, screened cable (max area 0.75 mm²) to terminal block X22:1– 4, as shown in the following image. For cascade connection, join terminal block X23 with X22 to the next heat pump . Softw ar e version Contr ol module VVM VVM SMO SMO 310 / VVM 500 320 / VVM 325 20 40 v7568R4 v7530R5 v7607R3 v7635R5 Disconnect the connections in F2120 Note: Electrical installation and wiring must be carried out in accordance with local code by a qualified technician. Line (high) Voltage A power block is provided for incoming power to the EME/ EMD. This circuit supplies power to all of the controls, internal pump, and immersion heater (if equipped). PULL Pull up! Note: Reference the electrical data for circuit sizing. Low Voltage The EME/EMD field wiring provides dry contact inputs to interface directly with industry standard zone controllers and aquastats. These are indicated with the following input pairs: Push down! PRESS Heat: Radiant heating demand input HHeat: Air handler heating demand input (120°F outlet temperature) Communica ons Wiring Between Indoor and Outdoor Units LE K Cool: Air handler cooling demand input (low temperature Communica ons Wiring1 Between 2 water) Indoor and Outdoor Units 1 DHW: Domestic hot water thermistor (connect to thermistor that is pre-installed in Turbomax tank) NIBE F2120 OAT and OAT: These Terminals are Not Used, The outdoor sensor is located in the Outdoor Unit, BT28 Sensor. 2 Outdoor Unit Cont 3 3 NOTE: Board USE THE UNINSULATED Outdoor Unit Control FOR Chapter CONDUCTOR 5 | Electrical connections THIS29CONNECTI NOTE: USE THE UNINSULATED CONDUCTOR FOR THIS CONNECTION. NOTE: USE THE 2 INSULATED CONDUCTORS FOR A & B NOTE: USE THE 2 INSULATED CONDUCTORS FOR A & B NOTE: USE THE UNINSULATED CONDUCTOR FOR GND CONNECTION NOTE: USE THE UNINSULATED CONDUCTOR FOR GND CONNECTION Line Voltage (L1 & L2) Enertech Global, LLC 37 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 7: Field Wiring Domestic Water Heating Controls Step 3: Insert cable through snap bushing If the EME/EMD is configured with the Turbomax domestic hot water tank. A thermistor is pre-installed in the tank well for monitoring tank temperature. • • Install BLACK wire on left lug Install WHITE wire on right lug DHW: Domestic hot water thermistor input Wire the thermistor to the EME/EMD Indoor Module. Follow the three steps below. Reference the thermistor manual included with the tank. Step 1: Remove front access panel ⚠ WARNING ⚠ THE AQUASTAT NEEDS TO BE SET BELOW THE LOAD LEAVING TEMPERATURE (LLT DEFAULT = 130O F). IF THE AQUASTAT IS SET ABOVE THE LOAD LEAVING TEMPERATURE, THE SYSTEM MAY NOT BE ABLE TO SATISFY THE DEMAND. Step 2: Drill hole through snap bushing Note: Take caution to not damage any components behind snap bushing. Enertech Global, LLC 38 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 7: Field Wiring ⚠ NOTICE ⚠ Space Conditioning Controls The EME/EMD indoor module has been developed to easily interface with zone control modules that can be used with zone valves. Zone valves are recommended to have a CV of at least 8.9 and have 24VAC actuators. These valves can be powered through the zone controller via the “R” and “C” terminals on the AV field terminal strip, as long as the demand at any time is less than 50VA (approximately 5 valves opening at once). If the load will exceed this amount, an external transformer is required. WHEN THE FAN COIL WILL BE USED FOR HEATING AND COOLING, THE EAV UNIT PROVIDES 120°F WATER TO THE FAN COIL (HHEAT CALL). WHEN ONLY RADIANT ZONES ARE CALLING (HEAT CALL), THE WATER TEMPERATURE SUPPLIED TO THE FLOOR IS DETERMINED BY THE RADIANT SET POINT (OR OUTDOOR RESET CURVE). IF A RADIANT ZONE IS CALLING AT THE SAME TIME AS THE FAN COIL, 125°F WATER WILL ALSO BE SUPPLIED TO THE FLOOR. ENERTECH RECOMMENDS THAT A DUAL SENSING THERMOSTAT BE USED FOR RADIANT ZONES WHEN THE FAN COIL WILL BE USED FOR HEATING TO AVOID OVERHEATING THE SLAB. IF THE FAN COIL IS ONLY USED FOR COOLING, THE WATER TEMPERATURE SENT TO THE FLOOR WILL BE BASED UPON THE RADIANT SET POINT (OR OUTDOOR RESET CURVE). EAV Input Requirements from Zone Panel The EME/EMD field wiring terminal board requires the following dry contact input pairs: HEAT: Radiant heating demand input (outdoor reset controlled temperature) HHEAT: Air handler heating demand input (125°F outlet temperature) COOL: Air handler cooling demand input (low temperature water) Low Voltage Field Connection: 1 2 3 4 5 6 7 8 9 10 11 12 ⚠ CAUTION ⚠ NOTE: 7, 9, and 11 to be connected to common at the HydroConnect zone panel (OC, Y2C, and Y1C). Pins 7 and 9 must be connected to the RC terminal at the EWC zone board. THIS SYSTEM MUST USE DRY CONTACT INPUTS. DO NOT SUPPLY 24VAC ACROSS THE TERMINALS. Enertech Global, LLC 39 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 7: Field Wiring Diagram: Heating/Cooling - Radiant - One Fan Coil (fan coil is Enertech MPH series) Zone 1 Fancoil INT. ROOM EXT. ROOM 1 R W Y G C Zone 2 Thermostat THM-0600 HBX 2 HBX 3 4 6 1 2 3 5 6 1 Thermostat 2 3 HBX EXT. ROOM 4 5 6 1 Thermostat THM-0600 INT. ROOM DO NOT CONNECT POWER HERE EXT. ROOM 4 Zone 4 THM-0600 INT. ROOM DO NOT CONNECT POWER HERE EXT. ROOM 5 Thermostat THM-0600 INT. ROOM DO NOT CONNECT POWER HERE Zone 3 HBX 2 DO NOT CONNECT POWER HERE 3 4 5 6 TH TH TH TH COMM TH TH TH TH COMM TH TH TH TH COMM TH TH TH TH COMM 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 Room Sensor 2 3 Floor Sensor Cool HHeat Heat C R 1 1 W R 1 2 0 I 0 TT1 3 4 5 5A 6 7 8 5 6 2 1 5 3 4 1 5 6 TH2 5 TH3 6 1 TH4 EXT THM Thermostat Signal Communication 5 6 H N 2 2 2 Y G X 7 Zone Control 5A 5A 5A 8 9 10 11 12 13 14 ZN 1 H N 1 Fancoil Outputs Aux. Therm Input DO NOT CONNECT POWER HERE ZONE POWER 1 9 10 11 12 13 14 15 16 17 18 19 20 21 5A PUMP 2 1 6 TH1 5A PUMP 1 1 I TT3 ZON-0600 HBX 1 0 Demand Outputs Fancoil Outputs INDOOR MODULE I TT2 ZN 2 H N ZN 3 H 2 3 Actuators N ZN 4 H N 15 16 17 POWER 120 L N GR 4 C R 120 V AC L N NOTE: 1. Only use THM-0600 thermostat with the ZON-0600 zone panels. • Up to 5 panels can be connected wirelessly 2. Print manual before going to the jobsite: https://hbxcontrols.com/zon-0600.php Enertech Global, LLC 40 AV : MD/ME - Rev. A Models Installation and Operations Manual Ground C C R R NEMA enclosure with two 75VA transformers (Enertech part # 11450000001) wired in parallel L2 L2 L1 L1 41 2 1 K13 C1 C54 42 R17 D16 R16 D15 R15 D14 R14 D13 R13 D12 R12 D11 34 C53 COOLING LIMIT R2 43 R48 U1 R47 U15 C21 LED8 LED7 LED6 LED5 LED4 LED3 LED2 LED1 R51 R58 LED18 LED17 LED16 LED15 LED14 LED13 LED12 LED1 1 LED10 LED9 U18 C18 C7 R37 R38 R39 R40 R41 R42 R43 R44 BANK2 R61 R60 R57 R56 Z1 U17 CP U RE SE T SW 2 J2 R29 R50 R30 R31 R45 R32 C3 R33 R46 R34 R35 R36 D23 BANK1 D17 D18 D19 D20 D21 D22 1ST STAGE HEATING LIMIT R3 19 26 47 40 33 R134 C52 R135 U9 C24 U8 C23 U7 C20 U6 C16 U5 C6 U4 C5 U3 C4 U2 R23 R24 R25 R26 R27 R28 R65 R132 R130 R128 R126 R124 R122 R121 R120 R118 R116 R114 R113 R112 R110 R108 R106 R105 R104 R102 R100 R98 R97 R96 R94 R92 R90 R89 R88 R86 R84 R82 R81 R80 R78 R76 R74 R73 R72 R70 R68 R66 SW 3 R133 R130 R129 R127 R125 R123 R119 R117 R115 R111 R109 R107 R103 R101 R99 R95 R93 R91 R87 R85 R83 R79 R77 R75 R71 R69 R67 STA GE MULTI HEAT DIFFE RENT IAL R4 5 12 ⚠ CAUTION ⚠ R63 R55 R54 R53 R52 ST ATU S O AS LI MIT SA S LI MIT RA S LI MIT ZO NE 4 OP EN ZO NE 3 OP EN ZO NE 2 OP EN ZO NE 1 OP EN OA DM PR OP EN BYP ASS DM PR AUX RE LA Y FAN CO MP RE SS OR 2 CO MP RE SS OR 1 RE V VAL VE ‘ O’ W1 H EA T W2 H EA T EM ER GE NC Y U19 TIM ER RE SE T SW 1 R50 Y1 C17 U14 HC >TSTAT > HP 1 < CS# > 2 O < RV > B OF F < ZD L > ON RA < AUX RL Y> DA OFF < RA S > ON 0 < RA LM T > +10 AN Y < FA N C TRL > Z 1 HP > SYS TEM > GA S DF < HP > CONV OFF < FAN PRG > ON 90 s < PUR GE > 180 s OA S < STAGES > TMR OFF < 50 % R > ON OFF < SA S > ON GA S < FAN > HYDRO C8 52 170 150 110 140 160 130 49 120 46 C51 C50 C49 C48 C47 C46 C45 C44 C43 C42 C41 C40 C39 C38 C37 C36 C35 C34 C33 C32 TB15 TB1 0 CO CO NORMAL 2 2 ON E ZON E AUX R C W1 E W2 O B Y1 Y2 R G C W1 E W2 O B Y1 Y2 R G C W1 E W2 O B Y1 Y2 R G 17 18 C W1 E W2 O B Y1 Y2 R G SA S SA S O AS O AS RA S RA S EMERGENCY T S T A T 1 TB14 T S T A T 2 TB13 T S T A T 3 TB12 T S T A T 4 TB1 1 S E N S O R S UZC4 D14 C31 C30 C29 C28 C27 C26 C25 R64 ALL FAN COILS MUST BE 2 TONS OR LARGER FOR THIS APPLICATION. IF ANY FAN COIL IS SMALLER THAN 2 TONS, A BUFFER TANK IS REQUIRED (USE DIAGRAM HTGCLG-7 AND FIGURE 16C). R18 40 37 SWITCH LEGEND R11 D10 R10 D9 R9 D8 R8 D7 R7 D6 R6 D5 R5 D4 D3 35 28 GROUND FAULT LED19 D24 C2 STA GING TIMER OAS R1 JMP 2 D2 OFF C O NT R O L S INC . E nglis htown, NJ K14 EWC JMP3 3 K12 RC RH LI NK 4 K11 ⚠NOTICE ⚠ S Y S T E M F1 K10 THE EM UNIT TERMINALS ARE POLARITY SENSITIVE. TERMINALS 7 AND 9 ARE COMMON. ENSURE THAT 7 AND 9 ARE CONNECTED TO RC AT THE ZONE BOARD. 9 10 HHEAT H V A C TB9 D1 CB1 K9 7 8 G Y2 Y1 O B W1 W2 E RC RH A U X R L Y E B D D M P R O A Z O N E Z O N E Z O N E TB8 TB7 TB6 TB5 TB4 TB3 Z O N E R C JMP1 K8 NC NO C M6 M4 M2 M1 M6 M4 M2 M1 M6 M4 M2 M1 M6 M4 M2 M1 M6 M4 M2 M1 M6 M4 M2 M1 TB2 TB1 K7 EM INDOOR MODULE Taco Geo Sentry Zone Valve C W/Y C W/Y C W/Y Zone Valves at Fan Coils MX R MX C RESET FA FA 24V 24V K4 K5 COOL ZONE VALVE NOTES: The EWC zone panel opens all dampers when no zones are calling, which is fine for dampers, but is not optimal for zone valves. When using zone valves on the output (left side), zone 4 should be used as a “control zone” to make sure that the zone valves will be closed when there is no thermostat call. For addtional zones, use a 2-zone expansion panel, Enertech part # AZZXM-2. L1 L2 230V connections 21 R 52 14 R 19 7 R 21 H VA C ZO NE C O NT R O L S YS TE M R 20 J1 R 22 Diagram HTGCLG-5: Heating/Cooling Multiple Fan Coils - No Radiant (All fan coils are Enertech MPH series) K3 C9 C10 C11 C12 C13 C14 C15 K2 C19 R 49 Enertech Global, LLC K1 C22 Section 8: Field Wiring THERMOSTAT AND FAN COIL CONNECTIONS FOR UP TO 3 FAN COILS (NOTE 2) ⚠ CAUTION ⚠ 3 heat/2 cool Heat Pump Thermostat O Y1 Y2 R G C W1 O Y1 Y2 R G C W1 R G TRANSFORMER MUST BE REMOVED FROM EACH FAN COIL TO AVOID PHASING ISSUES BETWEEN FAN COILS AND THE ZONE PANEL. WIRING SHOWN FOR ENERTECH MPH FAN COILS, WHICH USE HEAT PUMP THERMOSTATS. Enertech MPH Fan Coil O Y1 Y2 R G C1 W1 O Y1 Y2 R G C1 W1 O Y1 Y2 R G C1 W1 DIAL SETTINGS: STAGING = OFF COOLING LIMIT = 43 1ST STAGE LIMIT = 140 MULTI-STAGE = 26 DIP SWITCH SETTINGS: SYSTEM = GAS HP = CONV FAN PRG = OFF PURGE = 90S STAGES = TMR 50% RULE = OFF SAS = OFF FAN = GAS TSTAT = HP CS# = 1 NOTE 2 RV = O ZDL = OFF C AUX RLY = DA W1 RAS = OFF O RA LIMIT = 0 Y1 FAN CTRL = ANY Y2 Section 7: Field Wiring Diagram: Heating/Cooling - Multiple Fan Coils - No Radiant (All fan coils are Enertech MPH series) AV : MD/ME - Rev. A Models Installation and Operations Manual Ground C C R R NEMA enclosure with two 75VA transformers (Enertech part # 11450000001) wired in parallel L2 L2 L1 L1 W/Y C W/Y Zone Valves at Fan Coils 42 HHEAT K13 C1 C54 42 34 C53 COOLING LIMIT R2 43 R48 U1 R47 U15 C21 LED8 LED7 LED6 LED5 LED4 LED3 LED2 LED1 R51 R58 LED18 LED17 LED16 LED15 LED14 LED13 LED12 LED1 1 LED10 LED9 U18 C18 C7 R37 R38 R39 R40 R41 R42 R43 R44 BANK2 R61 R60 R57 R56 Z1 U17 CP U RE SE T SW 2 J2 R29 R50 R30 R31 R45 R32 C3 R33 R46 R34 R35 R36 D23 BANK1 D17 D18 D19 D20 D21 D22 1ST STAGE HEATING LIMIT R3 19 26 47 40 33 R134 C52 R135 U9 C24 U8 C23 U7 C20 U6 C16 U5 C6 U4 C5 U3 C4 U2 R23 R24 R25 R26 R27 R28 R65 R132 R130 R128 R126 R124 R122 R121 R120 R118 R116 R114 R113 R112 R110 R108 R106 R105 R104 R102 R100 R98 R97 R96 R94 R92 R90 R89 R88 R86 R84 R82 R81 R80 R78 R76 R74 R73 R72 R70 R68 R66 SW 3 R133 R130 R129 R127 R125 R123 R119 R117 R115 R111 R109 R107 R103 R101 R99 R95 R93 R91 R87 R85 R83 R79 R77 R75 R71 R69 R67 STA GE MULTI HEAT DIFFE RENT IAL R4 5 12 ⚠ CAUTION ⚠ R63 R55 R54 R53 R52 ST ATU S O AS LI MIT SA S LI MIT RA S LI MIT ZO NE 4 OP EN ZO NE 3 OP EN ZO NE 2 OP EN ZO NE 1 OP EN OA DM PR OP EN BYP ASS DM PR AUX RE LA Y FAN CO MP RE SS OR 2 CO MP RE SS OR 1 RE V VAL VE ‘ O’ W1 H EA T W2 H EA T EM ER GE NC Y U19 TIM ER RE SE T SW 1 R50 Y1 C17 U14 HC >TSTAT > HP 1 < CS# > 2 O < RV > B OF F < ZD L > ON RA < AUX RL Y> DA OFF < RA S > ON 0 < RA LM T > +10 AN Y < FA N C TRL > Z 1 HP > SYS TEM > GA S DF < HP > CONV OFF < FAN PRG > ON 90 s < PUR GE > 180 s OA S < STAGES > TMR OFF < 50 % R > ON OFF < SA S > ON GA S < FAN > HYDRO C8 52 170 150 160 140 110 130 49 120 46 C51 C50 C49 C48 C47 C46 C45 C44 C43 C42 C41 C40 C39 C38 C37 C36 C35 C34 C33 C32 TB15 TB1 0 CO CO NORMAL 2 2 ON E ZON E AUX R C W1 E W2 O B Y1 Y2 R G C W1 E W2 O B Y1 Y2 R G C W1 E W2 O B Y1 Y2 R G 17 18 C W1 E W2 O B Y1 Y2 R G SA S SA S O AS O AS RA S RA S EMERGENCY T S T A T 1 TB14 T S T A T 2 TB13 T S T A T 3 TB12 T S T A T 4 TB1 1 S E N S O R S UZC4 D14 C31 C30 C29 C28 C27 C26 C25 R64 ALL FAN COILS MUST BE 2 TONS OR LARGER FOR THIS APPLICATION. IF ANY FAN COIL IS SMALLER THAN 2 TONS, A BUFFER TANK IS REQUIRED (USE DIAGRAM HTGCLG-7 AND FIGURR 16C). R17 D16 R16 D15 R15 D14 R14 D13 R13 D12 R12 D11 R18 40 37 SWITCH LEGEND R11 D10 R10 D9 R9 D8 R8 D7 R7 D6 R6 D5 R5 D4 D3 35 28 GROUND FAULT LED19 D24 C2 STA GING TIMER OAS R1 JMP 2 D2 OFF C O NT R O L S INC . E nglis htown, NJ K14 EWC JMP3 1 K12 RC RH LI NK S Y S T E M 2 K11 ⚠NOTICE ⚠ 9 10 3 K10 THE EM UNIT TERMINALS ARE POLARITY SENSITIVE. TERMINALS 7 AND 9 ARE COMMON. ENSURE THAT 7 AND 9 ARE CONNECTED TO RC AT THE ZONE BOARD. 7 8 H V A C TB9 4 K9 COOL G Y2 Y1 O B W1 W2 E RC RH F1 K8 NC NO C A U X R L Y E B D D1 CB1 JMP1 D M P R O A Z O N E Z O N E Z O N E Z O N E R C TB8 TB7 TB6 TB5 TB4 TB3 TB2 TB1 K7 M6 M4 M2 M1 M6 M4 M2 M1 M6 M4 M2 M1 M6 M4 M2 M1 M6 M4 M2 M1 M6 M4 M2 M1 MX R MX C RESET FA FA 24V 24V K4 K5 EM INDOOR MODULE ZONE VALVE NOTES: C The EWC zone panel opens all dampers when no zones are W/Y calling, which is fine for C dampers, but is not optimal for zone valves. When using zone valves on the output (left side), Taco zone 4 should be used as a Geo Sentry “control zone” to make sure that Zone Valve the zone valves will be closed when there is no thermostat call. For addtional zones, use a 2-zone expansion panel, Enertech part # AZZXM-2. *Also includes Mult-Aqua ductless fan coils. L1 L2 230V connections 21 R 19 14 R 21 7 R 52 HVA C ZO NE C O NT R O L S YS TE M R 22 J1 R 20 Diagram HTGCLG-6: Heating/Cooling Multiple Fan Coils - No Radiant (at least one fan coil has Y/W inputs)* K3 C9 C10 C11 C12 C13 C14 C15 K2 C19 R 49 Enertech Global, LLC K1 C22 Section 8: Field Wiring L Y1 Y2 R G Y1 Y2 R G ⚠ CAUTION ⚠ TRANSFORMER MUST BE REMOVED FROM EACH FAN COIL TO AVOID PHASING ISSUES BETWEEN FAN COILS AND THE ZONE PANEL. NOTES: 3. Enertech model MPH fan coils are designed for a heat pump thermostat. However, the EWC panel requires all thermostats be of the same type. If an MPH is used with other fan coil types, wiring above will provide higher airflow in heating and lower airflow in cooling for MPH. 4. If using wall-mounted thermostat with Multi-Aqua, connect thermostat directly to unit terminals. Fan Coil Single or 2-stage with heat/ Conventional cool inputs Thermostat (not heat (not set up for pump style) heat pump) C W1 W2 C W1 W2 THERMOSTAT AND FAN COIL CONNECTIONS FOR UP TO 3 FAN COILS L (SEC) terminal (NOTE 2) at circuit board R G Multi-Aqua Ductless Fan Coil (Connect to zone BL valve terminals) YL RD NOTE 4 1 3 2 R G DIAL SETTINGS: STAGING = OFF COOLING LIMIT = 43 1ST STAGE LIMIT = 140 MULTI-STAGE = 26 DIP SWITCH SETTINGS: SYSTEM = GAS HP = CONV FAN PRG = OFF PURGE = 90S STAGES = TMR NOTE 2 50% RULE = OFF Single or 2-stage SAS = OFF Conventional FAN = GAS Enertech Thermostat TSTAT = HC (not set up for MPH CS# = 1 Fan Coil heat pump) RV = O ZDL = OFF AUX RLY = DA C1 C Y2 W1 RAS = OFF W1 W2 RA LIMIT = 0 O NOTE 3 Y1 Y1 FAN CTRL = ANY Section 7: Field Wiring Diagram: Heating/Cooling - Multiple Fan Coils - No Radiant (at least one fan coil has Y/W inputs)* AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Sequence of Operations • After the valves have transitioned, the system resumes to its normal running mode where the pump, compressor, and EEV modulate accordingly. Note that when switching from DHW to cooling or cooling to DHW, the valves will not switch to hydronic load or DHW tank if the leaving load temperature is not within 20°F of the target temperature. This approach eliminates hot water going to a fan coil in cooling mode or chilled water going to the DHW tank. Idle The system is off and waiting for a call. Pump Start The load pump runs at maximum speed and the EEV (Electronic Expansion Valve) opens completely to equalize the system and prepare for the compressor to start. The diverting valve and reversing valve move into position accordingly. When the higher priority call is satisfied, and there is still a call holding, the system will transition back to the original call in the same manner. The compressor is able to continue running and thus no ASC delay is experienced. The reversing valve is energized only in cooling. The diverting valve is energized only in hot water heating. This state runs for one minute to allow temperatures and pressures to equalize and provide relevant sensor information. Variable Speed Control The use of the variable speed compressor and pump includes advanced control algorithms to match the load demand of the space. The control described here takes place during the “Run” portion in the system sequence of operation described in the previous section. Equalization This step is primarily a verification of conditions. If the pressures have not equalized, the system will not continue to the running phase. Also, the system will verify that the load temperature does not exceed the required target temperature (see the next section “Variable Speed Control”). Compressor Control of the compressor is based on the target temperature of the system. The system monitors the current load out temperature and compares to the target temperature. Using the control algorithm, the system seeks to maintain the exact target temperature. Outlet temperature above or below the target temperature causes the compressor to throttle faster or slower as needed. In radiant floor heating, with an outdoor thermistor, the outdoor reset dictates the targeted load temperature. In cooling and hot water, the static menu settings control the target temperature. Compressor Start The EEV moves to the starting position and the compressor starts at 2700 RPM (minimum speed 1650 RPM). Run The compressor modulates speed according to the required load. The EEV modulates as needed to maintain 8°F superheat. The pump modulates to maintain ΔT across the heat exchangers. See the next section, “Variable Speed Control”, for more information. Compressor Stop This control allows the system to react to changing conditions. As zone valves open and close, the compressor speed is adjusted to meet the current demand. Pump Stop In some small load situations, such as very small radiant zones, the system may not be able to run slow enough to avoid thermal runaway. To accommodate this situation, the compressor can shut down when the load outlet temperature over/under shoots its target by 3°F. During this time, the pump will continue to circulate and the Soft Idle timer is started. After all calls have been satisfied, the compressor ramps down gradually to zero RPM. The pump maintains its current speed for one minute as it slowly ramps down to turn off. Note: Zone controls must allow post purge after a call to allow the internal load pump to stop. ASC The compressor will be cycled on again when the Soft Idle timer expires AND the outlet temperature has dropped below the target temperature. All priorities are still obeyed during this time. If the call becomes satisfied the system will shut down normally. The anti-short cycle timer prevents the compressor from running for three minutes after the unit has been shut down. All calls will be held until the ASC timer has expired. The three minute ASC is in addition to the pump start and stop durations to provide an industry standard five minute anti-shortcycle of the compressor. Note: It is recommended to size zones in order to avoid this cycling condition. It is preferred to avoid compressor cycling and improve efficiency. Heat/Cool/HW Transitions • The compressor ramps down to the minimum speed, in correlation to the operating envelope, for 30-60 seconds. The pump will slow down as compressor capacity ramps down. • The reversing valve is energized or de-energized if switching from heating to cooling or cooling to heating. If the system is switching from heating to hot water or hot water to heating, the reversing valve does not change. • The zone valves in the Indoor Module switch from the hydronic load to the domestic hot water tank or the zone valves switch from DHW to hydronic heating/cooling. Enertech Global, LLC Pump When the pump is in “auto” mode, it controls to maintain ΔT (Default 5°F) across the heat exchangers. To do so, load entering and leaving temperatures are continually monitored. A sensed ΔT above the 5°F setpoint will cause the pump to run faster. Below the setpoint causes the pump to run slower – down to the set minimum speed. Note: If, after setup, the EME/EMD detects the minimum flow rate of less than 5.0 GPM, it will attempt to increase the minimum flow percentage until 5.0 GPM is achieved. 43 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls EEV (Electronic Expansion Valve) Safety Defrost The EEV modulates as needed to maintain 8°F superheat. Above the setpoint causes the EEV to open and below causes it to close. The EEV remains completely closed when the system is idle. Movement of the valve can be observed on the LEDs of the driver in the lower control box. If the air coil is too cold, a “safety defrost” starts. This defrost cycle can be started earlier than a normal active defrost. If there are ten safety defrost cycles in a row (there is no time limit), an alarm will be displayed, and the control will not attempt to operate the compressor. The power must be cycled to reset the unit. Note: In some conditions it is normal for the EEV to open 100% and the superheat to be above 8°F. Troubleshooting The following tips can be used to rectify comfort issues: Defrost Controls The EAV outdoor unit has a built-in defrost control that monitors air coil temperature, outdoor air temperature, run time, compressor RPM, and operation mode. In the heating or DHW mode, there are two types of defrost cycles, active defrost and passive defrost. Note: As EAV can be connected to a large number of external units, these should also be checked. Note: In the event of action to rectify malfunctions that require work within screwed hatches the incoming electricity must be disconnected at the safety switch. Passive Defrost Note: The alarm is acknowledged on the EME/EMD module or by the voltage to the heat pump being interrupted and then restarted. If the outdoor temperature is above 39°F and the compressor is not operating but the air coil temperature indicates that defrost is necessary, passive defrost starts. In passive defrost mode, the reversing valve does not shift. The fan runs at high speed to attempt to increase coil temperature with the outdoor air temperature. If there is a compressor demand, passive defrost stops and the compressor starts. Active defrost may be enabled, depending upon coil temperature when the compressor is running. Basic Actions Low hot water temperature or a lack of hot water: This part of the fault-tracing section only applies if the heat pump is connected to the hot water heater. • Large hot water consumption. - Wait until the hot water has heated up. • These settings are made on the display on the indoor module/control module. - See the section for the indoor module or control module. • Clogged strainer. - Check whether alarm “high condenser out” (162 is an information message. Check and clean the strainer. Active Defrost Active defrost mode starts when the air coil temperature (thermistor BT16) falls below 27°F. Active defrost can occur as infrequently as once every 12 hours (for calibration purposes) or as often as once every 90 minutes, depending upon coil temperature, outdoor air temperature, and amount of moisture in the air. Time until “active defrosting” is shown in minutes on the indoor module HMI display. During active defrost, the reversing valve shifts to cooling mode, the fan stops, and the compressor continues to run until the coil temperature (BT16) reaches 37.4°F or the discharge gas temperature reaches 140°F. Defrost mode continues for 90 seconds once either temperature is reached. Low Room Temperature In Heating/High Room Temperature Cooling • Thermostats off in several rooms. - Set the thermostats to max in as many rooms as possible. • Zone panel is not showing heating/cooling calls. - Check settings. • Incorrect settings in indoor module or control module. - See the manual for the indoor module / control module (EME/EMD Series). • Incorrect flow across the heat pump. - Check whether alarm “high condenser in” (163) or “high condenser out” (162) are info messages. Follow the instructions for adjusting flow rate. Unsuccessful Defrost If the unit is unable to finish an active defrost cycle ten times in a row (there is no time limit), an alarm will be displayed, and the control will not attempt to operate the compressor. The power must be cycled to reset the unit. There are several possible reasons for an unsuccessful defrost, as follows: 1. When defrosting has gone on for longer than 15 minutes. This may be due to a strong wind effect on the air coil. A wind shield may be necessary. 2. When the water/antifreeze temperature on the line entering the outdoor unit (thermistor BT3) falls below 50°F. 3. If the temperature of the air coil continues to drop. EAV not in operation EAV communicates all alarms to the indoor module/ control module (EME/EMD Series). • Ensure that the EAV is connected to the power source and that compressor operation is required. • Check the indoor module/control module (EME/EMD Series). See Indoor Module section in this manual. • Check that the addressing of EAV is correct. • Check that the communication cable has been connected. Insufficient airflow through the air coil or insufficient water flow to the outdoor unit should be inspected and checked if it is unable to complete a successful defrost. If the unit has a significant amount of leaves around the air coil or if the coil needs cleaning, the coil may not be able to transfer heat properly. Insufficient water flow is generally due to a pump failure and should be displayed as a water flow fault at the HMI. Ice build-up in the fan, grille and/or fan cone on the outdoor module • De-icing fan is not activated. - Activate “de-icing fan” (menu 5.11.1.1). Manual Defrosting Defrost may be activated manually for service or testing purposes. A toggle switch is located in the “Manual Control” menu at the HMI. Enertech Global, LLC 44 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Outdoor Air Temperature (OAT) Heating Curves The OAT terminals in the EME/EMD indoor module are not used. The out door sensor is installed and wired in the Outdoor Unit, Sensor BT28. The EAV utilizes a set of temperature curve, shown below. The default curve is #3 and has been found to work in many installations. Depending on the load calculation and environmental requirements, a different curve may be preferable: The higher numbered curves produce higher radiant floor temperatures for a given outdoor temperature while the lower numbered curves produce lower temperatures. Outdoor reset control will vary the design load temperature based on outdoor temperature. The colder the outside temperature, the warmer the load water/antifreeze solution temperature. This offers several advantages. The COP of the system is improved by targeting the lowest outlet temperatures possible. Additionally, user comfort is improved by maintaining ideal temperatures for the current outdoor conditions. If necessary, the EAV can operate without outdoor reset by setting a static load water/antifreeze solution temperature (see Section 9). Example: at 30°F outdoor temperature, curve #3 will produce 79°F outlet temperature. Changing to curve #4 would produce 83°F outlet at that same condition. ⚠ NOTICE ⚠ Flooring manufacturers may have maximum recommended temperatures for radiant heat. This can be established on the HMI to cap the highest possible load temperature, regardless of outdoor temperatures. Note: The outdoor temperature is a one hour running average to avoid dramatic shifts. Human Comfort Limits Max. Temperature, deg. F Floors in occupied areas 85 Floors in perimeter areas 95 Floors in bathrooms 91 Floors in hallways, secondary rooms 95 Heating Curves 139 15 14 13 12 11 10 9 7 129 Supply Temeprature °F 8 6 119 5 109 4 99 3 89 2 79 1 69 59 70 50 30 10 -10 -30 Outdoor Temperature °F Enertech Global, LLC 45 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Control Box : AV Control Board Transformer Breaker Transformer Compressor Crankcase Heater Relay Field Low Voltage Connections to Indoor Unit (X22) Line Voltage Control Box : MD/ME HMI Field Wiring and RS-485 Connection ASB Companion Board (ACB) Actuator - Sensor Board (ASB) Enertech Global, LLC 46 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Components Human Machine Interface (HMI) ACB Companion Board Field Wiring and RS-485 Thermistors Touch screen where current status can be observed and settings of the system can be changed, described in additional detail in this section. This is the master controller which communicates via RS-485 with the ASB and outdoor unit. The Companion Board is an IO expander for the ASB. The dry contact inputs on the field wiring in input into this board. Additionally, it provides stable 12VDC supply for the ASB and HMI from input line voltage. The field wiring blocks provide dry contact inputs for connection to zone controllers (see Section 8). These inputs provide calls for Heating, Cooling, High Heating, and Hot Water. Two thermistors are utilized on the Indoor Module to measure entering and leaving load temperatures. Through these measurements the temperature difference (Delta-T) is calculated and provides the ideal pump speed. Reference Section 12 for resistance values. Actuator Sensor Board (ASB) Flow Sensor The ASB is a secondary controller to the HMI (primary controller) and provides inputs for sensors and outputs to actuators for the Indoor Module. The inputs include thermistors, flow meter, and pump feedback. It controls actuators, including pump speed (via PWM), electric heater stages, and the three way valve. 24VAC from the transformer is fed into the ASB for use on these outputs. Enertech Global, LLC The flow meter provides an accurate measurement of GPM through the load circuit. It is used for modulation of pump, ensuring minimum flow in all conditions. They are also used for simple readouts on the HMI as well as flow faults and alarms. 47 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Wiring Diagram : AV Enertech Global, LLC 48 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Wiring Diagram : MD Enertech Global, LLC 49 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Wiring Diagram : ME Enertech Global, LLC 50 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 8: Controls Alarms Wizard : Menu System The system contains an advanced network of sensors for The menu structure of the touch-screen HMI provides many system monitoring of optimal running conditions. If a problem customizable settings. Not all HMI screens are shown in should occur, these sensors will quickly identify the issue. this manual. The menus are very intuitive. The best way to In such a situation, the HMI displays a red LED, and flashing navigate is to review the various menus after going through the start up Wizard. This approach will help provide familiarity “ALARM” text on the screen. Additional details about an alarm can be viewed in “Alarm Info” under the menu. with the location of the various settings. Navigate the options within the0.0HMI, press the menu button in the upper 0.1 right Mainfirst Menu Menu 0.2 Menu corner. Menu Data Logging Manual Mode Statusthe Menu 1.2 Menu In manual1.1mode, system allows the technician to control the pump, compressor, valves, and immersion heaters. This is useful for validating the system components. After completing a verification of the system and installation, the mode can be changed back to “normal” in the system settings. Example: Move the diverting valve and verify flow is achieved to the hot water tank. To reach manual mode: • Press the menu button. 0.1to Menu • Scroll and press “5 Manual Control” 2.1 Outdoor Status Menu Enertech Global, LLC 1.2 Menu If the SD card icon is not present, this means that the user must insert the SD card for data to be1.3 logged. MenuThe SD card icon will be green if the SD card has been inserted & is successfully logging data. Note: If the SD card icon is red the SD card must be reinserted to log data. 0.2 Menu 2.2 Menu 1.3 Menu 51 2.3 Menu AV : MD/ME - Rev. A Models Installation and Operations Manual emp Section 8: Controls ⚠ NOTICE ⚠ (ADVANCED PASSCODE) ADDITIONAL SETTINGS Wizard : Domestic Hot Water Under settings, scroll down to Domestic Hot Water (advanced passcode required). • Hot Water Economy OFF: Electric immersion heat is used under high demand situations. Immersion heat is engaged after adjustable Aux HW Delay setting. 3.5.1 • Hot3.5.0 Water Economy ON: Compressor only hot water, no Aux HW Delay electric immersion heat is used (not recommended). ARE AVAILABLE WHEN THE ADVANCED PASSCODE IS ENTERED. IT IS NOT RECOMMENDED FOR HOMEOWNERS/BUILDING OWNERS ENTER THIS MODE WITHOUT A QUALIFIED ON SITE. 3.4.3 CoolTECHNICIAN Setpoint THE PASSCODE IS 001. Wizard : Pump Control Under settings, scroll down to Pumps (advanced passcode required). • Load Pump Min Speed: This is the lowest % of PWM signal the pump will run, regardless of Delta T setting. 3.7.1 Load Pump Min Speed 3.7.0 • Hot Water Priority: See Indoor Climate. • Hot Water Setpoint: Target tank temperature for DHW 3.6.0 3.6.1 Hot Water Se operation. • Load Pump Max Speed: This is the highest % of PWM 3.7.5 Temp Units signal the pump will run, regardless of Delta T setting. 3.8.0 • Delta Temp Cool Setpoint: This is the pump speed that will maintain the Delta T (temperature difference) between entering and leaving fluid temperatures. For example, if the Delta Temp is set at 5 deg. F and the entering temperature is 50 deg. F, the pump speed will increase/decrease RPM to attempt to deliver 45 deg. F leaving fluid temperature to the system. • Delta Temp Heat Setpoint: This is the pump speed that will maintain the Delta T (temperature difference) between entering and leaving fluid temperatures. For example, if the Delta Temp is set at 8 deg. F and the entering temperature is 90 deg. F, the pump speed will increase/decrease spped to attempt to deliver 98 deg. F leaving fluid temperature to the system. ⚠ NOTICE ⚠ THE SYSTEM WILL ADJUST PUMP SPEED TO MAINTAIN AT LEAST 4 GPM REGARDLESS OF DELTA T OR MIN. % SETTING. 3.9.0.1 Enertech Global, LLC • Hot Water Deadband: Temperature difference from 3.7.2to Load Pump Max Speed the tank can drop to 3.7.3 Delta Temp H setpoint minimum temperature before heat pump is engaged. AV : MD/ME - Rev. A Models 52 Installation and Operations Manual 3.9.0.2 e Code tpoint e Min Temp Section 8: Controls Wizard : Indoor Climate • Heat Curve: If Outdoor Reset is on, the control will use the heat curve selected. Under settings, scroll down to Indoor Climate (advanced passcode required). • Heat Max/Min Temps: Maximum temperature allowed in • Heat Economy OFF (recommended): Electric immersion heating mode is used to ensure flooring manufacturer’s heat is used under high load conditions (after compressor specifications for radiant heating. Minimum temperature runs at maximum RPMs for an adjustable period of time) is used if Outdoor Reset is Enabled. Note: High Heating (HHEAT call) setpoint is adjustable from 80°F to 135°F • Heat Economy ON: Electric immersion heat is not used leaving fluid temperature. (Factory default 120°F) (not recommended) • Cool Setpoint: Leaving fluid temperature used when • Hot Water Priority: 3.3.1 If ON,Heat a call for DHW will take priority Setpoint 3.4.0call is received (Default 45°F, minimum allowable cooling over heating or cooling calls. 42°F). • Heat Priority: If ON, a call for Heat will take priority over cooling. • Outdoor Reset: If ON, theBefore leaving fluid temperature to 3.1.2 Code 3.1.0 Advanced Passcode 3.1.1 After Cod the hydronic heating system will increase as the outdoor temperature gets colder and will decrease as the outdoor temperature gets warmer. This mode is recommended for 3.2.0 3.2.1 Heat Curve 3.3.0 radiant floor systems for best efficiency. • Heat Setpoint: Temperature the system will target if Outdoor 3.3.0 Reset is OFF. 3.3.1 Heat Setp 3.2.1 Heat Curve 3.5.0 3.5.1 Aux HW Delay • Aux Heat Delay: Adjust the amount of time the unit must run full speed before the electric immersion heat is 3.4.1 (Heat Heat Min Temp mode = OFF) 3.4.2 Heat Max Temp engaged Economy 3.1.1 After Code (note: file name is 3.1.0.BMP) 3.1.1 Aux Heat Delay Enertech Global, LLC 3.4.2 Heat Max Temp 3.3.1 Heat Setpoint 53 3.4.0 3.4.3 Cool Setpoint AV : MD/ME - Rev. A Models 3.4.3 Cool Setpoint Installation and Operations Manual 3.5.0 Section 8: Controls Wizard : Advanced Menu Wizard : Defrost Settings Under settings, scroll down to Defrost Settings (advanced passcode required). • Allow Fan De-Ice ON: Allows the unit to heat up the coil without the fan rotating when defrosting, so that the ice can melt off the fan and allow it to freely spin upon defrost completion. Note: This is seldom required • Evap Temp: This changes the active Defrosting temperature threshold to trigger a defrost cycle. Higher setpoint temperatures result in the active defrost occurring more frequently. Note: If more frequent active defrosting is required, increase the “Passive Temp” setpoint also. • Passive Temp: This changes the passive Defrosting temperature threshold to trigger a passive defrost. A passive defrost doesn’t run the compressor, but instead only uses the fan to pull air across the air coil. Warning: This setting can affect how frequently an Active Defrost cycle may occur. • Load Valve Open ON (Default): Moves the internal valve to “Hydronic Load” to circulate water and prevent the need to engage electric heaters for the EME during the defrost cycle. Note: For the EMD, since no electric heaters are equipped, this is the only source of heat to prevent the water from freezing during a defrost cycle. • Load Valve Open OFF: The HW tank will be used as a source of heat instead to prevent the water from freezing during a defrosting cycle. Enertech Global, LLC • • • 54 First Run Setup: Enables the user to re-enter the Startup Wizard. AV Update: Allows the user to update the AV via SD card (if an update is provided by Tech Support) Factory Reset: Restores all settings to DEFAULT and erases the Alarm history! AV : MD/ME - Rev. A Models Installation and Operations Manual 3.6.2 Hot Water Deadband Section 9: Equipment Start-Up 3.7.0 3.7.1 Load Pump Min Speed Preparation 6. Adjust menu settings via the indoor HMI (touchscreen Human Machine Interface) as necessary. 7. Fill in the commissioning report. 8. Remove the protective film from the cover on EAV. • • • • Check that the pipe system is complete. Check the pipe system for leaks. Check that the electrical installation is prepared. Check that the electrical supply is connected so that the compressor crankcase heater can start warming up the compressor, if necessary. • The compressor crankcase heater must have been active for at least 3 hours before compressor operation can be initiated. This is done by connecting control voltage. EAV permits compressor start after the compressor has been warmed up. This can take up to 3 hours. Preparing Piping System Air is initially released from the water/antifreeze solution and venting may be necessary. If bubbling sounds can be heard from the heat pump, the circulation pump and piping/fan coils the entire system will require further flushing/purging. When the system is stable (correct pressure and all air eliminated) the control system can be set as required. General Filling and Venting the Hydronic System EAV is equipped with an internal electronic controller that handles all functions necessary for operation of the heat pump, e.g. defrost cycle, stop at max/min. temperature, connection of the compressor heater, and protective functions during operation. Temperatures, number of starts and run time, are displayed in the indoor module/control module. 1. Fill the hydronic system to the necessary pressure. 2. Vent the system using the venting port on the flex tube (included) and possibly the circulation pump. 3. See “Flushing and Filling System” for details. 3.7.4 Deta Temp Cool Setpoint Start-up and Inspection The integrated control3.8.0 shows information via status-LEDs and can be used during servicing. 3.7.5 Temp Units 1. Communication cable, the EAV terminal block (X22:1-4) must be connected. 2. Turn the isolator switch on. 3. Ensure that the EAV is connected to the power source. 4. Reinstall the removed panels and cover. 5. After the power to EAV has been switched on and there is a compressor demand from the indoor module/control module, the compressor starts once it has warmed up, after max 180 minutes. The length of this time delay depends on whether the compressor has been warmed up previously. See chapter Preparations section, above. Under normal operating conditions the home owner does not need to have access to the controller. EAV communicates with the Enertech indoor module/control module, which means that all settings and measurement values from EAV are adjusted and displayed on the indoor module/control module. Startup Wizard The Startup Wizard is part of the First Run Setup. This Wizard is designed to ensure that the system has the proper flow rates and that air is purged from this system. Screens from the 3.9.0.1 3.9.0.2 Startup Wizard are shown on the following pages. 3.9.1 3.10.0.1 Startup Wizard Button 3.9.0 3.9.0.3 3.10.0.2 This will take you back to the startup wizard *MILITARY TIME* Step 1 3.10.1.1a Enertech Global, LLC Step 2 3.10.1.2 55 Step 3 3.10.1.3 AV : MD/ME - Rev. A Models Installation and Operations Manual 3.10.1.4 3.9.1 3.9.1 Section 9: Equipment Start-Up 3.10.0.2 Startup Wizard Idle Prompt This will take you back to the startup wizard ack to eene EXT. XT. T. 3.9.1 3.9.1 3.10.0.2 Startup Wizard Idle Prompt 3.10.1.1a 3.10.0.1 Startup 3.10.0.1 Startup W 3.10.1.1 3.10.1.2 This will This will t the start the startu Flush Outdoor Unit Flush Outdoor Unit heat exchanger and piping between the Indoor/ Outdoor units until air is removed. 3.10.1.1 3.10.1.2 3.10.1.2 3.10.1.4 Step 4 3.10.1.1a 3.10.1.1a 3.10.1.3 3.10.1.3 3.10.1.5 Step 5 3.10.1.2 3.10.1.2 3.10.1.4 Step 6 3.10.1.6 Please wa 3.10.1.3 3.10.1.3 3.10.1.5 3.10.1.7 Flush Flush Outdoor Outdoor Unit Unit Water piping piping r is is 3.9.0.3 3.9.0.3 3.10.0.1 3.10.0.1 Startup Startup Wizard Wizard Button 3.10.1.1 Please wait. Please Pleasewait. wait. 3.10.1.5 3.10.1.7 3.10.1.9 3.10.1.7 Step 7 Flush Flush Outdoor Outdoor Unit Unit Internal valve in Hot heat exchanger and piping heat exchanger andWater piping Internal valve in hydronic Tank position. between the Indoor/ between the Indoor/ position. Outdoor Outdoor units units until until air air is is removed. Completely removed. flush every circuit until it is void of all air. 3.10.1.6 3.10.1.6 Step 8 3.10.1.8 3.10.1.10 3.10.1.8 House zones test in progress. Please wait: Internal valve in hydronic 5 min position. Completely flush every circuit until it is void of all air. Step 10 3.10.1.10 Global, LLC Enertech Please Pleaseopen wait.ALL zone Please wait. valves press NEXT. Pleaseand wait. 3.10.1.7 3.10.1.7 Step 9 3.10.1.9 House zones test in Please open open ALL wait: Please ALL zone progress. Please valves and press valves and press NEXT. 5 min open ALL zone Please valves and press NEXT. Step 11 56 Internalva v Internal Tank pos Internal va Tank posit position. Complete circuit unt 3.10.1.8 3.10.1.8 3.10.1.10 House zones test in progress. Please wait: 5 min Step 12 AV : MD/ME - Rev. A Models Installation and Operations Manual House zon zo Please Pleaseop op progress. valves and 5valves min an Section 9: Equipment Start-Up 3.10.1.9 3.10.1.8 3.10.1.9 3.10.1.8 Pleaseopen openALL ALLzone zone Please valvesand andpress pressNEXT. NEXT. valves 3.10.1.11 3.10.1.11 Step 13 Housezones zonestest testin in House progress.Please Pleasewait: wait: progress. min 55min 3.10.1.12 3.10.1.12 Step 16 3.10.1.14 3.10.1.13 3.10.1.12 3.10.1.16 3.10.1.16 3.10.1.10 3.10.1.10 Step 14 Step 17 3.10.1.15 3.10.1.14 3.10.1.13 3.10.1.17 3.10.1.17 Step 19 3.12.0.1.1 3.11.0.1.1 3.10.1.17Reset Update Button Button Enertech Global, LLC House zones zones test test in House in progress. Please wait: progress. Please wait: min 55 min 3.10.1.13 3.10.1.13 Step 15 Step 18 3.10.1.15 3.10.1.14 3.11.0.1.1 Update Update Button Button 3.11.0.1.1 Step 20 3.12.0.1.1 3.11.0.1.1Reset Update Button Button 57 3.10.1.14 3.10.1.14 3.10.1.15 Re 3.12.0.1.1 3.12.0.1.1 Re Step 21 3.12.0.1.1 Reset Button AV : MD/ME - Rev. A Models Installation and Operations Manual Section 9: Equipment Start-Up Equipment Startup Checklist The system should be inspected before it is commissioned. The inspection must be carried out by a suitably qualified person. Fill in the page for information about installation data in the User manual. Description Notes Signature Date Piping System System Flushed with Flush Cart System Purged of Air Antifreeze type and % Flow Rate Verified Electricity Disconnects (indoor/outdoor) Installed Breaker and Wire Sizes Verified Immersion Heaters Wired Communication Cable Connected EAV Addressed (only when cascade connection) High Voltage Measurement (Outdoor) High Voltage Measurement (Indoor) Transformer Tap (208V or 240V) Verified Miscellaneous Condensate Drain Insulation Condensate Drain, Thickness Note: Check the connections, main voltage and low voltage before the machine is started, to prevent damage to the heat pump electronics. Enertech Global, LLC 58 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 9: Equipment Start-Up WPD Tables Model AV030 AV060 Load GPM 3.5 4.0 5.0 6.0 7.0 8.0 9.0 10.0 8.0 9.0 10.0 11.0 12.0 14.0 15.0 16.0 PSI 0.8 0.9 1.2 1.5 2.0 2.4 3.0 3.5 2.4 3.0 3.5 4.2 4.8 6.3 7.1 8.0 Load Side Pressure Drop with Antifreeze 50 °F 80 °F 100 °F FT HD PSI FT HD PSI FT HD 1.8 0.7 1.5 0.5 1.1 2.1 0.8 1.8 0.6 1.4 2.8 1.1 2.4 0.9 2.0 3.6 1.4 3.1 1.4 3.1 4.6 1.7 4.0 1.6 3.6 5.6 2.1 4.9 2.0 4.5 6.8 2.6 6.0 2.4 5.6 8.1 3.1 7.2 2.9 6.7 5.6 2.1 4.9 2.0 4.5 6.8 2.6 6.0 2.4 5.6 8.1 3.1 7.2 2.9 6.7 9.6 3.7 8.6 3.5 8.1 11.1 4.3 10.0 4.1 9.4 14.5 5.7 13.1 5.4 12.4 16.5 6.5 14.9 6.1 14.1 18.4 7.2 16.7 6.9 15.9 PSI 0.4 0.6 0.8 1.1 1.5 1.9 2.3 2.8 1.9 2.3 2.8 3.3 3.9 5.2 5.9 6.6 110 °F FT HD 1.0 1.4 2.0 2.5 3.4 4.3 5.3 6.4 4.3 5.3 6.4 7.7 9.0 12.0 13.6 15.1 1. Load WPD data are based on 15% (by volume) methanol solution while the unit and the load‐side pump are off. 2. Pressure drop data accurate within ±25%. 3. Unit test is run without hot water generation. 4. Interpolation of unit pressure drop data is permissible; extrapolation is not. 5. Pressure drop data is a result of lab testing and is not related to warranty. 6. Due to variations in installation, actual unit performance may vary from the tabulated data. Enertech Global, LLC 59 AV : MD/ME - Rev. A Models Installation and Operations Manual Enertech Global, LLC frigerant Circuit - Cooling Mode ON Condenser Water Heater 60 Strainer OFF Solenoid Valve Air Coil ON Electronic Expansion Valve Check Valve Vapor Injec�on Inverter Cooler Subcooler ENERGIZED OFF ON Electronic Expansion Vlave Bi-fow Filter Drier Compressor Suc�on Line Injec�on Line Discharge Line Brazed Plate Heat Exchanger (BPHE) Reversing Valve Water Pumps Are Ac�ve Water In Water Out Section 10: Troubleshooting Refrigerant Circuit - Cooling Mode AV : MD/ME - Rev. A Models Installation and Operations Manual Enertech Global, LLC Refrigerant Circuit - Hea�ng Mode ON Condenser Water Heater 61 Strainer OFF Solenoid Valve Air Coil ON Inverter Cooler Electronic Expansion Valve Check Valve Vapor Injec�on Subcooler DE-ENERGIZED OFF ON Electronic Expansion Vlave Bi-fow Filter Drier Compressor Suc�on Line Injec�on Line Discharge Line Brazed Plate Heat Exchanger (BPHE) Reversing Valve Water Pumps Are Ac�ve Water In Water Out Section 10: Troubleshooting Refrigerant Circuit - Heating Mode AV : MD/ME - Rev. A Models Installation and Operations Manual Enertech Global, LLC ON Refrigerant Circuit - Vapor Injec�on Hea�ng Mode Condenser Water Heater 62 Strainer OFF Solenoid Valve Air Coil ON Inverter Cooler Electronic Expansion Valve Check Valve Vapor Injec�on Subcooler DE-ENERGIZED ON ON Electronic Expansion Vlave Bi-fow Filter Drier Compressor Suc�on Line Injec�on Line Discharge Line Brazed Plate Heat Exchanger (BPHE) Reversing Valve Water Pumps Are Ac�ve Water In Water Out Section 10: Troubleshooting Refrigerant Circuit - Vapor Injection Heating Mode AV : MD/ME - Rev. A Models Installation and Operations Manual Enertech Global, LLC OFF Refrigerant Circuit - Ac�ve Defrost Mode Condenser Water Heater 63 Strainer ON Solenoid Valve Air Coil OFF Electronic Expansion Valve Check Valve Vapor Injec�on Inverter Cooler Subcooler ENERGIZED OFF ON Electronic Expansion Vlave Bi-fow Filter Drier Compressor Suc�on Line Injec�on Line Discharge Line Brazed Plate Heat Exchanger (BPHE) Reversing Valve Water Pumps Are Ac�ve Water In Water Out Section 10: Troubleshooting Refrigerant Circuit - Active Defrost Mode AV : MD/ME - Rev. A Models Installation and Operations Manual Enertech Global, LLC ON Condenser Water Heater Refrigerant Circuit - Passive Defrost Mode (39 deg F and above) 64 Strainer OFF Solenoid Valve Air Coil OFF Electronic Expansion Valve Check Valve Vapor Injec�on Inverter Cooler Subcooler OFF OFF Electronic Expansion Vlave Bi-fow Filter Drier Compressor Suc�on Line Injec�on Line Discharge Line Brazed Plate Heat Exchanger (BPHE) Reversing Valve Water Pumps Are Off Water In Water Out Section 10: Troubleshooting Refrigerant Circuit - Passive Defrost Mode AV : MD/ME - Rev. A Models Installation and Operations Manual Section 10: Troubleshooting Thermistor and Pressure Transducer Connections 1 2 Sensor placement LEK Sensors BP8 Low Pressure Transducer BP9 High Pressure Transducer BP11 Injection Transducer BT3 Temperature Sensor, Load In, Black (10k) BT12 Temperature Sensor, Load Out, Black (10K) BT14 Temperature Sensor, Discharge, Red (5.374K) BT15 Temperature Sensor, Liquid line (Heating), Black (10K) BT16 Temperature Sensor, Liquid line (Cooling), Blue (6K) BT17 Temperature Sensor, Suction Line, Blue (6K) BT28 Temperature Sensor, Outdoor Air, Blue (6K) BT81 Temperature Sensor, Vapor Injection Black (10K) BT84 Temperature Sensor, Suction Evap, Heating, Blue (6K) BT28 BT28 BT3 BT3 BT12 BT12 BT16 BT16 BT14 BT14 BT15 BT15 BT17 BT17 BT81 BT81 BT84 BT84 BP8 BP8 BP8 BP9 BP9 BP9 BP11 BP11 BP11 Enertech Global, LLC 65 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 10: Troubleshooting Type 1 2 3 Thermistor Legend Location Black 10K Thermistors: There are 4 thermistors on the Outdoor unit, Load In (BT3), Load Out (BT12), Liquid line (Heating) (BT15), and Vap Injection (BT81). There are 2 thermistors in the Indoor unit, Load In and Load out. There is 1 thermistor located in the Turbo Max storage tank. Blue 6K Thermistors: There are 4 thermistors on the Outdoor unit, Liquid Line (Cooling) (BT16), Outdoor Air (BT28), Suction Line (BT17), and Suction - Evap (Heating) (BT84). Red 5.374K Thermistor: Compressor Discharge Temp (BT14). Enertech Global, LLC Type 1 Thermistor Deg F k Ohms -25 202 -20 171 -15 144 -10 121 -5 102 0 87 5 74 10 63 15 55 20 47 25 41 30 35 35 30 40 26 45 23 50 20 55 18 60 15 65 13 70 12 75 10 80 9.3 85 8.3 90 7.4 95 6.6 100 5.8 105 5.1 110 4.6 115 4.2 120 3.8 125 3.4 130 3.1 135 2.8 140 2.5 145 2.3 150 2.0 155 1.8 160 1.7 165 1.5 170 1.4 175 1.2 180 1.1 185 1.0 190 0.95 195 0.87 200 0.81 205 0.75 210 0.70 215 0.66 220 0.62 225 0.58 230 0.54 235 0.50 240 0.46 245 0.41 250 0.35 255 0.29 260 0.23 66 Type 2 Thermistor Deg F k Ohms -25 27 -20 24 -15 21 -10 18 -5 16 0 14 5 12 10 10 15 9.2 20 8.1 25 7.2 30 6.3 35 5.5 40 5.0 45 4.4 50 3.9 55 3.5 60 3.1 65 2.8 70 2.5 75 2.3 80 2.1 85 1.9 90 1.7 95 1.5 100 1.4 105 1.2 110 1.1 115 1.0 120 0.95 125 0.87 130 0.80 135 0.73 140 0.67 145 0.61 150 0.56 155 0.51 160 0.47 165 0.43 170 0.40 175 0.37 180 0.34 185 0.31 190 0.29 195 0.27 200 0.25 205 0.24 210 0.22 215 0.21 220 0.20 225 0.19 230 0.17 235 0.16 240 0.15 245 0.14 250 0.13 255 0.11 260 0.10 Type 3 Thermistor Deg F k Ohms -25 5283 -20 4441 -15 3724 -10 3121 -5 2617 0 2202 5 1863 10 1586 15 1361 20 1173 25 1012 30 864 35 717 40 636 45 553 50 480 55 417 60 363 65 316 70 276 75 243 80 214 85 189 90 168 95 149 100 131 105 114 110 101 115 92 120 83 125 74 130 67 135 60 140 54 145 48 150 43 155 38 160 34 165 31 170 28 175 25 180 23 185 21 190 19 195 17 200 16 205 15 210 14 215 13 220 12 225 11 230 10 235 9.6 240 8.7 245 7.6 250 6.5 255 5.1 260 3.5 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 10: Troubleshooting Outdoor Unit LED Status The Outdoor Unit Board has six status LEDs for easy control and fault tracing. LED Name LED Color K5 Yellow K3 Yellow K2 Yellow K1 Yellow K4 ERROR Yellow Red State Not Lit Continuous Light Not Lit Continuous Light Not Lit Continuous Light Not Lit Continuous Light Not Lit Continuous Light Yellow Green EXT COM Green CPU Green Relay in de-energised position Relay engaged Relay in de-energised position Relay engaged Relay in de-energised position Relay engaged Relay in de-energised position Relay engaged No errors Flashes Info alarm (temporary), active Continuous alarm, active Not Lit No defrosting or protection active Flashes Some protection is active Continuous Light INT COM Relay engaged Not Lit Continuous Light DEFROST Explanation Relay in de-energised position Defrosting in progress Not Lit No communication with inverter Flashes Communication with inverter Not Lit No communication with indoor module / control module Flashes Communication with indoor module/control module Not Lit CPU without power Flashes CPU running Continuous Light Not Lit CPU running incorrectly Control board without power PWR Green N-RELAY N/A Not lit No function COMPR. ON N/A Not lit No Function Enertech Global, LLC Continuous Light Control board power on 67 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 10: Troubleshooting Indoor Unit LED Status The Indoor Unit Board has twelve status LEDs for easy control and fault tracing. LED Name LED Color 1 Yellow 2 Yellow Flashing Explanation No Call for Aux Heat Aux Heat Call, First stage Electric heat, 3KW, K1 Relay No Call for Aux Heat Aux Heat Call, Second stage Electric heat, 30 sec delay, 3KW, K2 Relay No Call for Aux Heat Aux Heat Call, Third stage Electric heat, 60 sec delay, 3KW, K3 Relay No Heat or Cool Call, House Valve Deenergized Heat or Cool Call, Load Valve Energized No Hot Water Call, Hot Water Valve Deenergized Hot Water Call, Hot Water Valve Energized No Power to the Control Board Power to the Control Board 12V DC There are no Problems There is a lockout, Check HMI for Error codes CPU is not operating CPU is operating and the Software operating on the Board No Communication from the HMI, ASB (Indoor) & TCB (Outdoor) Boards Communication is Good between the HMI, ASB and TCB Boards Green Not Lit This LED is not used 12 PWM 1 Yellow Yellow Varies Intensity Off to On 11 PWM 0 Yellow Yellow Varies Intensity Off to On 3 Yellow 4 Yellow 5 Yellow 6 Yellow 10 Error Red 8 CPU OK Green Green 9 Com Green Green 7 Lin Green Enertech Global, LLC State Not Lit Continuous On Not Lit Continuous On Not Lit Continuous On Not Lit Continuous On Not Lit Continuous On Not Lit Continuous On Not Lit Flashing Not Lit Flashing Not Lit • Intensity of LED changes with pump speed, Reverse logic, Led on Full is Pump Speed 0%, Led Off is Pump Speed 100%. • LED’s 11 & 12 are driven at the same speed. • Intensity of LED changes with pump speed, Reverse logic, Led on Full is Pump Speed 0%, Led Off is Pump Speed 100%. • LED’s 11 & 12 are driven at the same speed. 68 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 10: Troubleshooting Indoor, Outdoor, and Inverter Alarms Tables Indoor Alarms Alarm # Description 1 Unknown error has occured 2 Defrosting could not be completed 10 times in a row 4 Operation is stopped from indoor section after less than 5 minutes 6 10 Repeated defrostings according to the protection conditions 8 Return is hotter than supply 10 11 12 14 Compressor has failed to start. Load pump flow is too low. Pump running too high (Not Enabled) Indoor Load coil water temperature at maximum 15 Indoor Load coil water temperature at minimum 16 17 18 19 Indoor entering water thermistor failure Indoor leaving water thermistor failure No modbus communication with the indoor unit No modbus communication with the outdoor unit Outdoor Alarms Alarm # Description 33 Return Water Thermistor fault - Open circuit or short circuit on sensor input 34 Return Water Thermistor fault - Open circuit or short circuit on sensor input 35 Supply Water Thermistor fault - Open circuit or short circuit on sensor input 36 Supply Water Thermistor fault - Open circuit or short circuit on sensor input 37 Discharge Gas Thermistor fault - Open circuit or short circuit on sensor input 38 Discharge Gas Thermistor fault - Open circuit or short circuit on sensor input 39 Liquid Line Thermistor fault - Open circuit or short circuit on sensor input 40 Liquid Line Thermistor fault - Open circuit or short circuit on sensor input 41 Air Coil Thermistor fault - Open circuit or short circuit on sensor input 42 Air Coil Thermistor fault - Open circuit or short circuit on sensor input 43 Suction Gas Thermistor fault - Open circuit or short circuit on sensor input 44 Suction Gas Thermistor fault - Open circuit or short circuit on sensor input 45 Outdoor Air Thermistor fault - Open circuit or short circuit on sensor input 46 Outdoor Air Thermistor fault - Open circuit or short circuit on sensor input 47 Vap Injection Thermistor fault - Open circuit or short circuit on sensor input 48 Vap Injection Thermistor fault - Open circuit or short circuit on sensor input 49 Suction Pressure Transducer fault - Open circuit or short circuit on sensor input 50 Suction Pressure Transducer fault - Open circuit or short circuit on sensor input 51 Discharge Pressure Transducer fault - Open circuit or short circuit on sensor input 52 Discharge Pressure Transducer fault - Open circuit or short circuit on sensor input 53 Injection Pressure Transducer fault - Open circuit or short circuit on sensor input 54 Injection Pressure Transducer fault - Open circuit or short circuit on sensor input 55 Suct - Evap Thermistor fault - Open circuit or short circuit on sensor input Cause Error number not found If Outdoor Return/Supply Thermistors < 41F abort defrost Compressor Stops running within 5 min 9 times # of Faults Lockout Level NA NA 1 Lockout w E Heat Resetable Via Power Cycle Power Cycle 1 Lockout w E Heat Power Cycle Failed to defrost 1 Lockout w E Heat Power Cycle Connection, supply line return line switched around Inverter, compressor, wiring problem Flow less than 3.5 gpm for 10 seconds Pump feedback indicates an alarm Indoor Entering/Leaving Water Thermistor over 150F for 30s Indoor Entering/Leaving Water Thermistor under 37F for 30s 12F < Thermistor < 200F for 30sec 12F < Thermistor < 200F for 30sec Loss of RS485 communication for 10 sec Loss of RS485 communication for 10 sec 1 Lockout w E Heat Power Cycle 3 3 3 3 Lockout w E Heat Lockout no E Heat Lockout no E Heat Lockout w E Heat Power Cycle Power Cycle Power Cycle Power Cycle 3 Lockout w E Heat Power Cycle 3 3 1 3 Lockout no E Heat Lockout no E Heat Lockout no E Heat Lockout w E Heat Power Cycle Power Cycle Power Cycle Power Cycle Cause Open/Short Sensor for 1 sec # of Faults Lockout Level 2 Lockout w E Heat Resetable Via Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle Open/Short Sensor for 5 sec 1 Lockout w E Heat Power Cycle Open/Short Sensor for 1 sec 2 Lockout w E Heat Power Cycle --------------- CONTINUES --------------- Enertech Global, LLC 69 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 10: Troubleshooting Outdoor Alarms (Continued) Alarm # Description 56 Suct - Evap Thermistor fault - Open circuit or short circuit on sensor input 61 High ambient temperature during heating Cause Open/Short Sensor for 5 sec # of Faults Lockout Level 1 Lockout w E Heat Outdoor Air Temp > 122F for 1 sec 3 Lockout w E Heat Resetable Via Power Cycle if Outdoor Air Temp < 118.4F for 1 sec if Outdoor Air Temp > -9.4F after 45 sec if Return Water Temp < 132.8F after 30 sec if Return Water Temp > 39.2F after 30 sec if Supply Water Temp < 104 or 66.2F if Supply Water Temp > 37.4F after 30 sec Power Cycle 63 Low ambient temperature during heating Outdoor Air Temp < -13F for 1 sec 3 Lockout w E Heat 65 High return temperature 3 Lockout w E Heat 67 Low return temperature 5 Lockout w E Heat 69 High supply temperature 5 Lockout w E Heat 71 Low supply temperature Return Water Temp > 136.4F & not defrosting for 3 sec Return Water Temp < 37.4F and in Cooling for 3 sec Supply Water Temp > 104F or 66.2F and not defrosting for 3 sec Supply Water Temp < 37.4F for 3 sec 5 Lockout w E Heat 72 5 Repeated low pressure alarms within 4 hours 1 Lockout w E Heat 73 Low pressure alarm Suction Gas Temp < -26.9F for 3 sec within 4 hours Suction Gas Temp < -26.9F for 3 sec 5 Lockout w E Heat 74 5 Repeated high pressure alarms within 4 hours Discharge Gas Temp > 141.8 or 136.4F for 3 sec within 4 hours, High pressure alarm Discharge Gas Temp > 141.8 or 136.4F for 3 sec 5 Repeated low air coil temperature alarms within 4 Air Coil Temp < -26.9F for 3 sec within 4 hours Low air coil temperature alarm Air Coil Temp < -26.9F for 3 sec within 4 hours 1 Lockout w E Heat 5 1 5 Lockout w E Heat Lockout w E Heat Lockout w E Heat 3 Repeated high discharge temperature alarms within 4 hours High discharge temperature alarm Discharge Gas Thermistor > 257F for 3 sec within 4 hours Discharge Gas Thermistor > 257F for 3 sec 1 Lockout w E Heat 3 Lockout w E Heat If Suction Gas Thermistor < 3.2F for 20 sec within 4 hours If Suction Gas Thermistor < 3.2F for 20 sec 1 Lockout w E Heat 81 5 Repeated low suction temperature alarms within 4 hours Low suction temperature alarm 5 Lockout w E Heat 85 High ambient temperature during cooling Outdoor Air Temp > 122F for 1 sec and Cooling 3 Lockout w E Heat 87 Low ambient temperature during cooling Outdoor Air Temp < 32F for 1 sec and Cooling 3 Lockout w E Heat # of Faults 3 1 3 1 Lockout Level Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Resetable Via Power Cycle Power Cycle yes Power Cycle 1 2 Lockout w E Heat Lockout w E Heat yes Power Cycle 2 1 3 1 1 Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat yes Power Cycle yes Power Cycle Power Cycle 1 Lockout w E Heat Power Cycle 1 Lockout w E Heat Power Cycle 1 Lockout w E Heat Power Cycle 1 1 Lockout w E Heat Lockout w E Heat Power Cycle Power Cycle 3 1 3 1 Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat yes Power Cycle yes Power Cycle 75 76 77 78 79 80 Inverter Alarms Alarm # 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 Description Communication timeout Communication timeout External fault 3 Repeated external faults within 2 hours Communication with Inverter/drive interrupted LP/HP pressure switch alarm 2 Repeated LP/HP pressure switch alarms within 2.5 hours PWM sync errors Repeated PWM sync errors MCE fault Repeated MCE faults Phase voltage to inverter too high - High voltage in to Outdoor unit Phase voltage to inverter too high, 3 times within 2 hours or persistent for 1 hour - High voltage in to Outdoor unit Phase voltage to inverter too low, below 180V - Low voltage or dropped phase to Outdoor unit Phase voltage to inverter too low, below 180V, 3 times within 2 hours or persistent for 1 hour - Low voltage or dropped phase to Outdoor unit A compressor phase is missing A compressor phase is missing, 3 times within 2 hours or persistent for 1 hour PFC gate kill Repeated PFC gate kill faults PFC over temperature Repeated PFC over temperature faults Cause if Suction Gas Temp > 28.9F after 60 sec Power Cycle if Discharge Gas Temp < Power Cycle if Air Coil Temp > -26.9F after 30 sec Power Cycle if Discharge Gas Thermistor < 257F after 30 sec Power Cycle Suction Gas Thermistor > 3.2F after 30 sec Outdoor Air Temp < 118.4F after 1 sec Outdoor Air Temp > 35.6F after 1 sec --------------- CONTINUES --------------- Enertech Global, LLC 70 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 10: Troubleshooting Inverter Alarms (Continued) Alarm # Description 123 Phase voltage to inverter too high - Too high current to inverter 124 Phase voltage to inverter too high, 3 times within 2 hours - Too high current to inverter 125 Motor 1 over temperature 126 Repeated motor 1 over temperature faults 127 Temporary fault in inverter - Interruption in voltage supply to the inverter 128 Temporary fault in inverter, 5 times within 2 hours Interruption in voltage supply to the inverter 129 Motor 1 phase loss 130 Repeated motor 1 phase loss faults 131 Motor 1 zero speed 132 Repeated motor 1 zero speed faults 133 Motor 1 i2t fault 134 Repeated motor 1 i2t faults 135 Motor 1 output current overload 136 Repeated motor 1 output current overload faults 137 Motor 1 output power overload 138 Repeated motor 1 output power overload faults 139 Too low incoming voltage to F2120 - Incoming voltage too low (1 phase) 140 Repeated too low incoming voltage faults Incoming voltage too low (1 phase) 141 Motor 2 i2t fault 142 Repeated motor 2 i2t faults 143 Motor 2 output current overload 144 Repeated motor 2 output current overload faults 145 Motor 2 output power overload 146 Repeated motor 2 output power overload faults 147 Motor 2 over temperature 148 Repeated motor 2 over temperature faults 149 Motor 2 gate kill 150 Repeated motor 2 gate kill faults 151 Motor 2 phase loss 152 Repeated motor 2 phase loss faults 153 Motor 2 zero speed 154 Repeated motor 2 zero speed faults 181 Heat Pump Fan Alarm 182 Repeated heat Pump Fan Alarm faults 183 Failed start 184 3 Fepeated failed start 185 Inverter speed too low 187 Service test mode 201 No modbus communication with master 203 No inverter communication fault 204 5 Communication fault with inverter - Inverter unpowered or broken 205 Serial number error 207 Inverter initiation fault - Incorrect inverter size 209 Inverter not compatible - Incorrect inverter size 211 Config file missing - Incorrect inverter size 213 Config charge error - Incorrect inverter size Enertech Global, LLC Cause 71 # of Faults Lockout Level 3 Lockout w E Heat yes Resetable Via 1 Lockout w E Heat Power Cycle 3 1 5 Lockout w E Heat Lockout w E Heat Lockout w E Heat yes Power Cycle yes 1 Lockout w E Heat Power Cycle 3 1 3 1 3 1 3 1 3 1 1 Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat yes Power Cycle yes Power Cycle yes Power Cycle yes Power Cycle yes Power Cycle Yes 1 Lockout w E Heat Power Cycle 2 1 2 1 2 1 2 1 2 1 2 1 2 1 5 1 3 1 1 1 1 1 1 Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat yes Power Cycle yes Power Cycle yes Power Cycle yes Power Cycle yes Power Cycle yes Power Cycle yes Power Cycle yes Power Cycle yes Power Cycle Power Cycle Power Cycle Power Cycle Power Cycle Power Cycle 1 1 1 1 1 Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat Lockout w E Heat None None None None None AV : MD/ME - Rev. A Models Installation and Operations Manual This page left blank for Warranty Form detachment. Enertech Global, LLC 72 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 11: Warranty Form and Revision Table Warranty Registration Form WARRANTY REGISTRATION NOW REGISTER ONLINE AT WARRANTY-REGISTRATION.ENERTECHGEO.COM WARRANTY REGISTRATIONS SHOULD BE SUBMITTED WITHIN 60 DAYS OF INSTALLATION Model Number _________________________Serial Number__________________________ Install Date _______________ This unit is performing Satisfactorily Not Satisfactorily (please explain) _______________________________________ ______________________________________________________________________________________________________ Purchaser/User Name _____________________________________________________ Phone ________________________ Address ____________________________________________ City __________________________ State/Prov _________ Postal Code ___________________ Email __________________________________________________________________ Installer Company Name ________________________________________________________________________________ City _____________________________State/Prov __________ Email ___________________________________________ Application Residential New Construction Residential Geo Replacement Multi-Family (Condo/Townhome/Multiplex) Residential Replacement of Electric, Gas or Other Commercial Other ___________________________________ Use (check all that apply) Space Conditioning Domestic Water Heating Radiant Heat Swimming Pool Snow/Ice Melt Other _____________________________________________________________________________________________ Loop Type Horizontal Loop Vertical Loop Pond Loop Open Loop Demographics Household Income Home Size Home Location Up to 1500 sq. ft. 1501 to 2500 sq. ft. 2501 to 4000 sq. ft. Rural Urban Suburban Value of Home Less than $100,000 $100,000–$250,000 $250,000–$500,000 Under $30,000 $30,000–$45,000 $45,000–$60,000 $60,000–$75,000 $75,000–$100,000 Over $100,000 Over 4000 sq. ft. $500,000–$1 mil Over $1 mil Customer Satisfaction How would you rate your overall satisfaction with your new geothermal system? 1 (Very Dissatisfied) 2 3 4 5 6 7 8 9 10 (Very Satisfied) How would you rate your overall satisfaction with your installing geothermal contractor? 1 (Very Dissatisfied) MAIL THIS FORM TO: ENERTECH GLOBAL LLC 2506 SOUTH ELM STREET GREENVILLE, IL 62246 2 3 4 5 6 7 8 EMAIL THIS FORM TO: [email protected] REGISTER ONLINE AT: warranty-registration.enertechgeo.com Enertech Global, LLC 73 9 10 (Very Satisfied) FAX THIS FORM TO: ENERTECH GLOBAL LLC 618.664.4597 Rev 30 DEC 2013B AV : MD/ME - Rev. A Models Installation and Operations Manual This page left blank for Warranty Form detachment. Warranty Claim(s) For warranty claims, the Installer/Dealer can visit: http://warranty-claim.enertechgeo.com Enertech Global, LLC 74 AV : MD/ME - Rev. A Models Installation and Operations Manual Section 11: Warranty Form and Revision table Revision Table Date Description of Revision Page 9MAR2023 UPDATED VERBIAGE 02FEB2023 REVAMPED 14MAR2021 MINOR LAYOUT CHANGES Various 02MAR2021 MINOR LAYOUT CHANGES Various 14DEC2020 INITIAL DRAFT CREATED Enertech Global, LLC Various ALL ALL 75 AV : MD/ME - Rev. A Models Installation and Operations Manual enertechusa.com MEMBER Enertech Global is continually working to improve its products. As a result, the price, design and specifications of each product may change without notice and may not be as described herein. For the most up-to-date information, please visit our website, or contact our Customer Service department at [email protected]. Statements and other information contained herein are not express warranties and do not form the basis of any bargain between the parties, but are merely Enertech Global’s opinion or commendation of its products. 20D826-01NN Enertech Global, LLC 230309K ">

Public link updated
The public link to your chat has been updated.
Advertisement
Key features
- Split-system design
- Space conditioning & DHW
- Electric or dual fuel backup
- Integrated controls
- Variable speed operation
- No buffer tanks needed
- Energy efficient
Frequently asked questions
The MPH024 is a split-system air conditioner designed to provide both space conditioning (heating and cooling) and domestic hot water (DHW).
Dual fuel backup provides an additional source of heat, typically in the form of a gas burner, to ensure warm water and comfortable temperatures even when the primary heat source (the heat pump) is not sufficient.
It eliminates the need for a separate buffer tank for hot water storage, thereby freeing up space in your home or building.
Variable speed operation allows the unit to adjust its speed according to the need, maximizing energy efficiency and optimizing comfort.