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 ................................................................ 2-3
Prepare the Unit ..........................................................................
Location .......................................................................................
Hoisting .......................................................................................
Mounting Pad ..............................................................................
Indoor Installation ........................................................................
Glycol/Water System Design/ Installation .................................... 8-9
Preparing for Start-Up .................................................................
BEFORE Starting the Unit ........................................................... 10
Start the SpacePak Low Ambient Heat Pump ............................. 10
Anti-freeze Cycle ......................................................................... 10
24-Hour follow-up ........................................................................ 10
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
.................
......................................................
...................................................
Field Connections ........................................................................
Pictorial Diagram .........................................................................
4
Ladder Diagram ...........................................................................
5
6
Annual Inspection ........................................................................
6
Preparing the LAHP for Shut Down .............................................
6
To Restart After Shutdown ...........................................................
6
7
7
9
LAHP2-1016
45W30-WG0773
11
12
13
......... 14-15
16
16
16
................................
17
.....................................
18
Copyright 2016 Mestek, Inc.

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Summary of Contents for Space Pak LAHP48

  • Page 1: Table Of Contents

    LAHP2-1016 45W30-WG0773 MODEL LAHP48 INSTALLATION, OPERATION & MAINTENANCE MANUAL Low Ambient Air to Water Reverse Cycle Heat Pump SECTION 1: READ BEFORE PROCEEDING SECTION 8: ELECTRICAL DIAGRAMS Model LAHP Overview ..............2-3 Field Connections ................ Pictorial Diagram ................. SECTION 2: SPECIFICATIONS AND RATINGS ....

  • 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 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 4: Section 2: Specifications And Ratings

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 2: Specifications & Ratings Figure 2 Model LAHP - 048 Heating Capacity (47°F Ambient, 120°F Supply Water) 64,680 BTUh (18.9 kW) 3.18 Heating Capacity (17°F Ambient, 120°F Supply Water) 46,440 BTUh (13.6 kW)

  • Page 5: Section 3: Dimensions

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 3: Dimensions Figure 3 Model LAHP Dimensions (all dimensions in inches) – 5 –...

  • Page 6: Section 4: Location & Mounting

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 4: 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 7: Indoor Installation

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 4: 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 8: Section 6: Glycol/Water System

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 6: Glycol/Water System Figure 7 LAHP Glycol Concentrations (30% Minimum, 50% Maximum) Ethylene Glycol % Min. Ambient Temp 23°F/5°C 14°F/10°C 2°F/-17°C -13°F/-25°C -36°F/-38°C SpacePak Capacity Multiplier 0.98...

  • Page 9: Glycol/Water System Design/ Installation

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 6: 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 6. Make sure all system with glycol/water mixture.

  • Page 10: Before Starting The Unit

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 7: Start-up And Test (continued) BEFORE Starting The Unit This initiates a call in heating mode. The pump symbol will begin flashing. Electrical shock hazard — Disconnect all...

  • Page 11: Section 8: Electrical Diagrams

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 8: Electrical Diagrams Figure 9 Field Connections – 11 –...

  • Page 12: Pictorial Diagram

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 8: Electrical Diagrams (continued) Figure 10 SpacePak LAHP - Pictorial Wiring Diagram – 12 –...

  • Page 13: Ladder Diagram

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 8: Electrical Diagrams (continued) Figure 11 SpacePak LAHP Electrical Ladder Diagram – 13 –...

  • Page 14: Section 9: Troubleshooting/Fault Codes

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 9: Troubleshooting / Fault Codes Figure 12 Troubleshooting Suggestions Condition Possible Causes Verification Solution Incorrect power supply Check power supply Supply correct power Unit will not start...
  • Page 15 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 9: Troubleshooting / Fault Codes (continued) Figure 13 Fault Codes FAULT MALFUNCTION REASON ACTION CODE Water Inlet Temperature Sensor Failure Short Circuit or Sensor Open Check/Replace Sensor...

  • Page 16: Section 10: Maintenance

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 10: 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 17: Section 11: Replacement Parts

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 11: Replacement Parts Figure 16 Replacement Parts LAHP48 Item Part Number Description 45R2000-3138 Carel Controller MCH20000011 45R20000-370007 Transformer 41x26.5F 45R2000-3223 Sensor 150-503-96115 (50K) 45R20000-430031 System Protection Module MXL033...

  • Page 18: Section 12: Limited Warranty

    Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 12: 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 19 Model LAHP48 Air to Water Heat Pump — Installation, Operation & Maintenance Manual – 19 –...
  • Page 20 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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