Weil-McLain Eco HP 41 MBH Product Manual
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Weil-McLain Eco HP 41 MBH Product Manual

Weil-McLain Eco HP 41 MBH Product Manual

Split air-to-water heat pump outdoor unit
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41/48/55
Split Air-to-Water Heat Pump
ODU - Outdoor Unit Product Manual
• Installation
• Startup
Part number 550-100-587/0824

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Summary of Contents for Weil-McLain Eco HP 41 MBH

  • Page 1 41/48/55 Split Air-to-Water Heat Pump ODU - Outdoor Unit Product Manual • Installation • Startup Part number 550-100-587/0824...

  • Page 3: Table Of Contents

    Split Air-to-Water Heat Pump – ODU Product Manual Split Air-to-Water Heat Pump – ODU Product Manual Contents Section 1 - Safety Precautions ... . . 5 Section 12 - Technical Specifications .
  • Page 4 Split Air-to-Water Heat Pump – ODU Product Manual 41/48/55 MBH Electric Control System Refrigerant System Please remove the cardboard fin tube protector after installation. 41/48/55 MBH Remove the transportation support 41/48/55 MBH Please remove the noise insulation cover of the compressor first. Please make sure the transportation support has been removed.

  • Page 5: Section 1 - Safety Precautions

    Split Air-to-Water Heat Pump – ODU Product Manual 1 SAFETY PRECAUTIONS The precautions listed here are divided into the following types.They are quite important, so be sure to follow them carefully. Meanings of DANGER, WARNING, CAUTION and NOTICE symbols. Read these instructions carefully before installation. Keep this manual handy for future reference. Improper installation of equipment or accessories may result in electric shock, short-circuit, leakage, fire or other damage to the equipment.
  • Page 6 Split Air-to-Water Heat Pump – ODU Product Manual This symbol shows that service personnel should be handling this equipment CAUTION with reference to the installation manual. This symbol shows that information is available such as the operating manual CAUTION or installation manual. ①...

  • Page 7: Installation

    Split Air-to-Water Heat Pump – ODU Product Manual Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Do not pierce or burn the unit. Be aware that refrigerants may not contain an odor. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or persons who lack experience and knowledge, unless they are supervised or have been given instructions concerning the use of the appliance by a person responsible for their safety.
  • Page 8 Split Air-to-Water Heat Pump – ODU Product Manual The minimum test pressure for the low side of the system shall be the low side design pressure and the minimum test pressure for the high side of the system shall be the high side design pressure, unless the high side of the system, cannot be isolated from the low side of the system in which case the entire system shall be pressure tested to the low side design pressure.
  • Page 9 Split Air-to-Water Heat Pump – ODU Product Manual Work procedure Work shall be undertaken under a controlled procedure so as to minimize the risk of a flammable gas or vapor being present while the work is being performed. General work area All maintenance staff and others working in the local area shall be instructed on the nature of work being carried out.
  • Page 10 Split Air-to-Water Heat Pump – ODU Product Manual Wiring Check that wiring will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other adverse environmental effects. The check shall also take into account the effects of aging or continual vibration from sources such as compressors or fans.

  • Page 11: Charging Procedures

    Split Air-to-Water Heat Pump – ODU Product Manual Charging procedures In addition to conventional charging procedures, the following requirements shall be followed. Ensure that contamination of different refrigerants does not occur when using charging equipment. Hoses or lines shall be as short as possible to minimize the amount of refrigerant contained in them. Cylinders shall be kept in an appropriate position according to the instructions.
  • Page 12 Split Air-to-Water Heat Pump – ODU Product Manual Be sure the heat pump is grounded. In order to avoid electric shock, make sure that the unit is grounded and that the ground wire is not connected to a gas or water pipe, lightning conductor or telephone ground wire. Do not operate the heat pump with a wet hand.
  • Page 13 Installations of an A2L refrigerant (R32) Heat Pump like the ECO HP with other Combustion appliances in the same room / space are not allowed with out specific preventative measures. Weil-McLain boilers that utilize a sealed Cabinet and are vented per their Installation and Service Manuals Direct Vent instructions are permitted, because any leaked refrigerant will not be able to enter the combustion air as well as reach any component that could be considered a potential ignition source.

  • Page 14: Section 2 - Accessories

    Split Air-to-Water Heat Pump – ODU Product Manual 2 ACCESSORIES 2.1 Overview of the unit 2.1.1 Disassembling the unit Door 1 Access to the compressor and electrical parts. Cut off all power supply— i.e. unit power supply and domestic hot water tank power supply (if applicable) — before removing door 1.
  • Page 15 Split Air-to-Water Heat Pump – ODU Product Manual 2.1.3 41/48/55 MBH single phase units 1）PCB A, Inverter module CN19 CN20 CN32 CN502 CN23 CN501 Code Assembly unit Assembly unit Code Compressor connection port U Port for communication with PCB B(CN32) Compressor connection port V Port for high pressure switch (CN23) Compressor connection port W...

  • Page 16: Accessories Supplied With The Unit

    Split Air-to-Water Heat Pump – ODU Product Manual 2) PCB B, Main control board CN10 CN27 CN11 CN22 CN24 CN17 CN26 CN28 CN13 CN55 CN18 CN14 CN7 CN5 CN6 CN16 CN19 CN21 CN29 CN33 CN2 CN30 CN36 CN37 CN38 CN20 26 25 24 Code Code...

  • Page 17: Section 3 - Before Installation

    Split Air-to-Water Heat Pump – ODU Product Manual 3 BEFORE INSTALLATION Before installation Be sure to confirm the model name and the serial number of the unit. Handling 1. Handle the unit using the sling to the left and the right. Pull up both sides of the sling at the same time to prevent disconnection of the sling from the unit.

  • Page 18: Section 4 - Installation Site

    Split Air-to-Water Heat Pump – ODU Product Manual 4 INSTALLATION SITE Be sure to adopt adequate measures to prevent the unit from being used as a shelter by small animals. Small animals making contact with electrical parts can cause malfunction, smoke or fire. Please instruct the customer to keep the area around the unit clean.

  • Page 19: Selecting A Location In Cold Climates

    Split Air-to-Water Heat Pump – ODU Product Manual Make sure there is enough space to do the installation. Set the outlet side at a right angle to the direction of the wind. Prepare a water drainage channel around the foundation, to drain waste water from around the unit. If water does not easily drain from the unit, mount the unit on a foundation of concrete blocks, etc.

  • Page 20: Section 5 - Unit Installation

    Split Air-to-Water Heat Pump – ODU Product Manual 5 UNIT INSTALLATION 5.1 Dimensions 41/48/55 MBH (unit: in) Fig: 5-1 (unit: in) Model 41/48/55 MBH 17-7/8 20-9/16 15-13/16 7-9/16 4-5/16 6-11/16 34-1/16 9-1/16 5.2 Installation requirements Check the strength and level of the installation ground so that the unit may not cause any vibrations or noise during operation.

  • Page 21: Drain Hole Position

    Split Air-to-Water Heat Pump – ODU Product Manual 5.3 Drain hole position Drain hole This drain hole comes with a rubber plug installed. If the smaller drain hole cannot adequately drain the base of the unit, the plug can be removed from this drain hole to increase the draining capacity.
  • Page 22 Split Air-to-Water Heat Pump – ODU Product Manual 5.4.2 In case of multiple-row installation 1) In case of installing one unit per row. Fig: 5-6 Unit B2(in) A(in) B1(in) C(in) ≥ 5-7/8 41/48/55 MBH ≥ 118-1/4 ≥ 23-5/8 ≥ 78-3/4 2) In case of installing multiple units in lateral connection per row.

  • Page 23: Section 6 - Piping Installation

    Split Air-to-Water Heat Pump – ODU Product Manual 6 PIPING INSTALLATION 6.1 Refrigerant piping liqulid 41/48/55 MBH Fig.6-1 ● To prevent the refrigerant piping from oxidizing inside when welding, it is necessary to charge nitrogen, or oxide will block the circulation system. ●...

  • Page 24: Leakage Detection

    Split Air-to-Water Heat Pump – ODU Product Manual 6.2 Leakage detection After completion of field piping for split systems, the field pipework shall be pressure tested with an inert gas, specifically, dry oxygen free nitrogen(OFN) and then vacuum tested prior to refrigerant charging, according to the following requirements.

  • Page 25: Connecting Method

    Split Air-to-Water Heat Pump – ODU Product Manual 6.4 Connecting method Outdoor Unit Indoor Unit Figure 6-3 H represents the height difference between the indoor and outdoor units, including both scenarios where the indoor unit is above the outdoor unit and where the indoor unit is below the outdoor unit. Models 41/48/55 MBH Max.piping length (H+L1)

  • Page 26: Remove Dirt Or Water In The Pipes

    Split Air-to-Water Heat Pump – ODU Product Manual 6.5 Remove dirt or water in the pipes 1) Make sure there is no debris or water in piping before connecting to outdoor and indoor units. 2) Wash the pipes with high pressure nitrogen, never use refrigerant of outdoor unit. 6.6 Airtight testing Charge pressured nitrogen after connecting indoor/outdoor unit pipes to do airtight testing.

  • Page 27: Section 7 - Wiring

    Split Air-to-Water Heat Pump – ODU Product Manual 7 WIRING In the U.S.A., wiring must conform with current local codes and the current National Electric Code (NEC). In Canada, wiring must conform with current local codes and the current Canadian Electrical Code (CEC). A main switch or other means of disconnection, having a contact separation in all poles, must be incorporated in the fixed wiring in accordance with relevant local laws and regulations.

  • Page 28: Safety Device Requirement

    Split Air-to-Water Heat Pump – ODU Product Manual 7.3 Safety device requirement 1. Select the wire diameters (minimum value) individually for unit based on the table 8-1 and table 8-2. 2. Select circuit breaker that having a contact separation in all poles not less than 0.118 inch providing full disconnection， where MFA is used to select the current circuit breakers and residual current operation breakers.

  • Page 29: To Finish The Outdoor Unit Installation

    Split Air-to-Water Heat Pump – ODU Product Manual 7.5 To finish the outdoor unit installation Insulate and fix the refrigerant piping and interconnection cable as follows: Gas pipe Gas pipe insulation Finishing tape Liquid pipe Liquid pipe insulation Interconnection cable 8 TEST RUNNING Operate according to "key points for test running"...
  • Page 30 Split Air-to-Water Heat Pump – ODU Product Manual Special ventilation opening requirements: #1. A minimum of 50% of the lower ≥ 7/8in Upper Determination of unventilated room area for ventilation opening area must be (height of Ventilation appliances using A2L refrigerants based on unit upper less than 7-7/8”...

  • Page 31: Section 10 - Hand-Over

    Split Air-to-Water Heat Pump – ODU Product Manual Table 1 - Minimum required Room Area Install height-h0 (in) Refrigerant System line Charge, length (ft) (lbs) Minimum room area, Amin (ft ≤49.2 4.04 No limit No limit No limit No limit No limit No limit No limit No limit No limit No limit No limit 83.9 88.1 94.4...
  • Page 32 Split Air-to-Water Heat Pump – ODU Product Manual Please contact your local dealer to do the ● Do not use the heat pump for other maintenances work. purposes. ● Never expose little children, plants or In order to avoid any quality deterioration, do not use the unit for cooling precision animals directly to the air flow.

  • Page 33: Section 11 - Operation And Performance

    Split Air-to-Water Heat Pump – ODU Product Manual 11 OPERATION AND PERFORMANCE 11.1 Protection equipment Protection equipment will deactivate the heat pump during a heat pump activation operation in the following conditions: ■ Cooling Operation ● The air inlet or air outlet of outdoor unit is blocked. ●...

  • Page 34: Error Codes

    Split Air-to-Water Heat Pump – ODU Product Manual 11.8 Error codes When a safety device is activated, an error code will be displayed on the user interface. A list of all errors and corrective actions can be found in the table below. Reset the safety by turning the unit OFF and back ON.
  • Page 35 Split Air-to-Water Heat Pump – ODU Product Manual ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1. The Th sensor connector is loose. Reconnect it. Compressor suction line 2.The Th sensor connector is wet or there is water in. remove temperature sensor (Th)
  • Page 36 Split Air-to-Water Heat Pump – ODU Product Manual ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION 1. Whether the power supply input is in the specified range. 2. Power off and power on for several times rapidly in short time.
  • Page 37 Split Air-to-Water Heat Pump – ODU Product Manual ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION Heating mode, DHW mode: 1. The water flow is low; water temp is high, whether there is air in the water system. Release the air. 2.
  • Page 38 Split Air-to-Water Heat Pump – ODU Product Manual ERROR MALFUNCTION FAILURE CAUSE CODE OR PROTECTION AND CORRECTIVE ACTION DC compressor inverter module fault DC bus low voltage protection DC bus high voltage protection 1. Check the Heat pump system pressure; 2.

  • Page 39: Section 12 - Technical Specifications

    Split Air-to-Water Heat Pump – ODU Product Manual 12 TECHNICAL SPECIFICATIONS Model 55 MBH 48 MBH 41 MBH Power supply 208/230 V~ 60 Hz Rated current 26.0 A Dimensions (W×H×D)[in] 44 x 34-1/16 x 20-9/16 Fan motor DC motor / Horizontal Compressor DC inverter dual rotary Heat exchanger...

  • Page 40: Section 13 - Disposal

    Split Air-to-Water Heat Pump – ODU Product Manual 13 DISPOSAL Comply with national regulations. Components and accessories from the units are not part of ordinary domestic waste. Complete units, compressors, motors etc. are only to be disposed of via qualified disposal specialists. This unit uses flammable refrigerant R32.

  • Page 41: Annex A: Refrigerant Cycle

    Split Air-to-Water Heat Pump – ODU Product Manual ANNEX A: Refrigerant Cycle Cooling Heating Description Description Item Item Evaporation sensor in heating Compressor (Condenser sensor in cooling) Stop valve (gas) 4-Way Valve Stop valve (liquid) Gas-liquid separator High Pressure Switch Air side heat exchanger Electronic expansion Valve Low Pressure Switch...

  • Page 42: Annex B: To Install The E-Heating Tape At The Drain Pan And Outlet (Field Installation)

    Split Air-to-Water Heat Pump – ODU Product Manual ANNEX B: To Install The E-heating Tape At The Drain Pan And Outlet (Field Installation) For installations that may see outdoor temperatures below freezing, there is a potential for the drain pipe of the drain pan to freeze and not allow adequate drainage from the appliance. In order to avoid this potential frozen drain, an optional heating tape can be added to the drain pipe.
  • Page 43 Split Air-to-Water Heat Pump – ODU Product Manual NOTE...
  • Page 44 WM Technologies, LLC 500 Blaine Street Michigan City, IN 46360-2388 weil-mclain.com...

This manual is also suitable for:

Eco hp 48 mbhEco hp 55 mbh

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