Space Pak LAHP48 Installation, Operation & Maintenance Manual
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Space Pak LAHP48 Installation, Operation & Maintenance Manual

Low ambient air-to-water reverse cycle heat pump
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MODEL LAHP48
INSTALLATION,
OPERATION
& MAINTENANCE
MANUAL
Low Ambient Air-to-Water
Reverse Cycle Heat Pump
Model LAHP Overview .......................................................................
Prepare the Unit ..................................................................................
Location ...............................................................................................
Hoisting ................................................................................................
Mounting Pad ......................................................................................
Indoor Installation ................................................................................
Glycol/Water System Design/ Installation .......................................... 14-15
Preparing for Start-Up .........................................................................
BEFORE Starting the Unit ..................................................................
Start the SpacePak Low Ambient Heat Pump ..................................
Anti-freeze Cycle .................................................................................
24-Hour follow-up ................................................................................
IN UNITED STATES: 260 NORTH ELM ST. WESTFIELD, MA 01085 800-465-8558 / FAX (413) 564-5815
IN CANADA: 7555 TRANMERE DRIVE, MISSISSAUGA, ONTARIO, L5S 1L4 (905) 670-5888 / FAX (905) 670-5782
...................... 8-10
............................................................
....................................
2
Pictorial Diagram .................................................................................
Ladder Diagram ..................................................................................
... 3-7
Field Connections ............................................................................... 19-20
11
Annual Inspection ...............................................................................
12
Preparing the LAHP for Shut Down ...................................................
12
To Restart After Shutdown ..................................................................
12
12
13
13
15
16
16
16
16
LAHP2-1018
45W30-WG0773
17
18
........... 21-22
23
23
23
.....................................
24
..........................................
25
Copyright 2017 Mestek, Inc.

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  • Page 1: Table Of Contents

    LAHP2-1018 45W30-WG0773 MODEL LAHP48 INSTALLATION, OPERATION & MAINTENANCE MANUAL Low Ambient Air-to-Water Reverse Cycle Heat Pump SECTION 1: READ BEFORE PROCEEDING SECTION 9: ELECTRICAL DIAGRAMS Model LAHP Overview ............... Pictorial Diagram ................. Ladder Diagram .................. SECTION 2: LAHP FIELD ADJUSTABLE PARAMETERS ...

  • Page 2: Section 1: Read Before Proceeding

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Qualified installer only — For information not included in this manual, This product must be installed only by a qualified see the following: This manual includes only basic service technician.

  • Page 3: Section 2: Lahp Field Adjustable Parameters

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 2: LAHP Field Adjustable Parameters Figure 1 LAHP Controller – 3 –...
  • Page 4 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Figure 2 Menu Structure For 5” main menù Save in the EEPROM For 5” setting password parameter level parameter values parameters /* parameters F-r* parameters A* probe settings...
  • Page 5 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual LAHP Controller The LAHP controller allows the adjustment of heating & cooling setpoints, differentials, and defrosting parameters. The following chart depicts the factory default values for the most commonly adjusted parameters.
  • Page 6 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Figure 3 Solstice Extreme Fan Speed Control, Cooling Figure 4 Solstice Extreme Fan Speed Control, Heating SOLSTICE EXTREME FAN SPEED CONTROL, COOLING SOLSTICE EXTREME FAN SPEED CONTROL, HEATING...
  • Page 7 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Liquid Side Ambient Operating Limits • The LAHP48 is designed to deliver optimal performance in The fluid in the liquid side of the Model LAHP ambient temperatures ranging from -8°F (-22°C) to 95°F must be an anti-freeze/water mix.

  • Page 8: Section 3: Specifications And Ratings

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 3: Specifications & Ratings Model LAHP48 Heating Capacity (47°F/8°C Ambient temp. 120°F/50°C Supply Water) 66,480 BTU/h (18.9kW) 3.26 Heating Capacity (17°F/-8°C Ambient temp. 120°F/50°C Supply Water) 46,440 BTU/h (13.6kW)
  • Page 9 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual LAHP48 Cooling Performance Figure 7 48,000 Supply Water Temp °F 44,000 40,000 36,000 32,000 28,000 24,000 OUTDOOR AMBIENT TEMPERATURE, °F All data based upon pure water @11.0 GPM...
  • Page 10 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual LAHP48 Heating Performance Figure 8 80,000 Supply 72,000 Water Temp °F 64,000 56,000 48,000 4.00 40,000 3.00 32,000 2.00 24,000 16,000 1.00 O O U U T T D D O O O O R R A A M M B B I I E E N N T T T T E E M M P P E E R R A A T T U U R R E E , °F All data based upon pure water @11.0 GPM...

  • Page 11: Section 4: Dimensions

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 4: Dimensions Figure 9 Model LAHP Dimensions (all dimensions in inches) – 11 –...

  • Page 12: Section 5: Location & Mounting

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 5: Location & Mounting Mounting Pad Failure to comply with all of the guidelines IN THE FOLLOWING could result in death, serious injury or The SpacePak heat pump must be mounted on a level corrosion substantial property damage.

  • Page 13: Indoor Installation

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 5: Location & Mounting (continued) Corrosive Environments Indoor Installation Do NOT install the unit in an area subject to sea air or other If the unit is installed inside a building, the building must be potential corrosive contaminants.

  • Page 14: Section 7: Glycol/Water System

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 7: Glycol/Water System Figure 13 LAHP Glycol Concentrations (30% Minimum, 50% Maximum) Ethylene Glycol % Min. Ambient Temp for Operation 2°F/-17°C -13°F/-25°C -36°F/-38°C SpacePak Capacity Multiplier 0.93...

  • Page 15: Glycol/Water System Design/ Installation

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 7: Glycol/Water System (continued) Glycol/Water System Installation Insulate The Piping 1. After testing and draining the system, apply pipe insulation. Fill Obtain all components specified in Figure 12. Make sure all system with glycol/water mixture.

  • Page 16: Before Starting The Unit

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 8: Start-up And Test (continued) BEFORE Starting The Unit After 1 to 2 minutes, the 1 numeral will change to constant, the compressor symbol will turn on and the compressor will start.

  • Page 17: Section 9: Electrical Diagrams

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 9: Electrical Diagrams Figure 15 SpacePak LAHP - Pictorial Wiring Diagram – 17 –...

  • Page 18: Ladder Diagram

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 9: Electrical Diagrams (continued) Figure 16 SpacePak LAHP Electrical Ladder Diagram – 18 –...

  • Page 19: Field Connections

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 9: Electrical Diagrams (continued) Figure 17 Field Connections – 19 –...
  • Page 20 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 9: Electrical Diagrams (continued) Figure 18 Wiring Diagram – 20 –...

  • Page 21: Section 10: Troubleshooting/Fault Codes

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 10: Fault Codes Figure 19 Fault Codes Alarm Compressor Pump Fans Heater Alarm type Reset Logic Display Response Response Response Response Freeze error Automatic Stop None...
  • Page 22 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 10: Troubleshooting Figure 20 Troubleshooting Suggestions Condition Possible Causes Verification Solution Incorrect power supply Check power supply Supply correct power, 220-240 60Hz Unit will not start...

  • Page 23: Section 11: Maintenance

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 11: Annual Maintenance Preparing The LAHP For Shut Down Perform Annual Inspection DO NOT turn off power to the LAHP in the winter or any time when there is a possibility of freezing.

  • Page 24: Section 12: Replacement Parts

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 12: Replacement Parts Figure 20 Replacement Parts LAHP48 Item Part Number Description 45R2000-3138 Carel Controller 45R20000-370007 Transformer 12V 41x26.5F 45R2000-3223 Sensor 150-503-96115 (5k) 45R20000-430031 EEV Control Module...

  • Page 25: Section 13: Limited Warranty

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 13: Limited Warranty LIMITED WARRANTY Air to Water Reverse Cycle Heat Pump The “Manufacturer” warrants to the original owner at the original installation site that the Air to Water Reverse Cycle Heat Pump (the “Product”) will be free from defects in material or workmanship for a...
  • Page 26 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual – 26 –...
  • Page 27 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual – 27 –...
  • Page 28 IN UNITED STATES: 260 NORTH ELM ST. WESTFIELD, MA 01085 800-465-8558 / FAX (413) 564-5815 IN CANADA: 7555 TRANMERE DRIVE, MISSISSAUGA, ONTARIO, L5S 1L4 (905) 670-5888 / FAX (905) 670-5782...

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