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Space Pak SCM Installation, Operation & Maintenance Manual

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MODEL SCM
INSTALLATION,
OPERATION
& MAINTENANCE
MANUAL
Air To Water Heat Pumps
Reverse Cycle Chillers
3 and 5 Ton
Model SCM overview ..................................................................
Prepare the unit ..........................................................................
Location ......................................................................................
Handling ......................................................................................
Mounting pad ..............................................................................
Glycol/water system design .........................................................
Glycol/water system installation ..................................................
Overcurrent protection & wire sizing ...........................................
Optional low ambient adjustment ................................................
SpacePak heat pump/chiller wiring .............................................
Multiple air handler applications .......................................... ........
Qualifi ed installer only -
This product must be installed
only by a qualifi ed service techni-
cian. The installation must be
done using recognized industry
practices, and in compliance with
this manual and all applicable
codes. Failure to comply could
result in death, serious injury or
substantial property damage.
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 1LR (905) 672-2991 / FAX (905) 672-2883
2
BEFORE starting the unit ............................................................ 11
Start the SpacePak heat pump/chiller ......................................... 11
Anti-freeze cycle ......................................................................... 11
24-Hour follow-up ........................................................................ 11
5
5
5
Glycol/water mixture ................................................................... 13
5
Perform annual inspection .......................................................... 13
Preparing the SCM for shut down ............................................... 13
To restart after shutdown ............................................................ 13
8
8
9
3-Ton SpacePak chiller ............................................................... 15
9
5-Ton SpacePak chiller ............................................................... 15
9
9
For information not included in this
manual, see the following: This manual
includes only basic information for instal-
lation, operation and maintenance of
SpacePak air to water heat pumps. For
more advanced applications and informa-
tion not shown in this manual, contact
SpacePak Technical Support for assis-
tance and supplemental instructions. Call
413-564-5530 in Westfi eld, MA or visit our
website at www.spacepak.com to send an
e-mail or review technical literature.
SCM2-1212
W30-WG0593
Copyright 2012 Mestek, Inc.

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  • Page 1: Table Of Contents

    Handling ..................Glycol/water mixture ..............13 Mounting pad ................Perform annual inspection ............13 Preparing the SCM for shut down ..........13 SECTION 5: GLYCOL/WATER SYSTEM To restart after shutdown ............13 Glycol/water system design ............Glycol/water system installation ..........

  • Page 2: Section 1: Read Before Proceeding

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 1: READ BEFORE PROCEEDING Hazard defi nitions Failure to comply with all of the guidelines BELOW could result in death, serious injury or The following terms are used throughout this manual to bring substantial property damage.

  • Page 3: Section 2: Specifications And Ratings

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 2: Specifi cations and ratings Figure 1 Model SCM rating data Item Units SCM-036 SCM-060 Item Units SCM-036 SCM-060 Cooling capacity Btuh / KW 34,000 / 10.0 46,000 / 13.5...

  • Page 4: Section 3: Dimensions

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 3: DIMENSIONS Figure 3 Model SCM dimensions (ALL DIMENSIONS IN INCHES) Model Mounting Mounting Bottom Bottom Base to Return Supply Mounting Front to Cabinet Overall Overall...

  • Page 5: Section 4: Location & Mounting

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 4: LOCATION & MOUNTING Figure 4 Handling with cables Failure to comply with all of the guidelines IN THE FOLLOWING could result in death, serious injury or substantial property damage.

  • Page 6: Section 5: Glycol/Water System

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 5: Glycol/water system Figure 6 SpacePak Chiller with single air handler (see page 7 for instructions) SpacePak heat pump/chiller Balancing valves (2 per air handler) Air separator with automatic air —...

  • Page 7: Glycol/Water System Design

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 5: Glycol/water system (continued) Figure 7 SpacePak Chiller with two air handlers (parallel piping) (see page 7 for instructions) — see legend on page 6 Glycol/water system design 4.

  • Page 8: Glycol/Water System Installation

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 5: Glycol/water system (continued) 6. Size the piping and select the system pump using the fl ow Figure 8 SCM glycol concentration (10% min, 50% max) rate and pressure drop given in Figure 1, page 3.

  • Page 9: Section 6: Electrical Connections

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 6: Electrical connections The electrical installation must comply with Figure 9 SpacePak Heat Pump/Chiller fi eld wiring — SINGLE air the latest edition of: in the U.S. — National handler (See Figure 12, page 12 for ladder wiring diagram) Electrical Code ANSI/NFPA No.
  • Page 10 Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 6: Electrical connections (continued) Multiple air handler applications Figure 10 SpacePak Heat Pump/Chiller fi eld wiring — Multiple air handlers (see Figure 12, page 12 for ladder wiring diagram) •...
  • Page 11 Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 6: Electrical connections (continued) Figure 11 SpacePak Heat Pump/Chiller — Pictoral wiring diagram – 11 –...
  • Page 12 Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 6: Electrical connections (continued) Figure 12 SpacePak Heat Pump/Chiller electrical ladder diagram – 12 –...

  • Page 13: Section 7: Start-Up And Test

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 7: Start-up and test BEFORE starting the unit Electrical shock hazard — Disconnect all electrical power before proceeding with the following. Verify that the system and all components have been installed in accordance with this manual and all applicable codes and instructions.

  • Page 14: Anti-Freeze Cycle

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 7: Start-up and test (continued) 24-Hour follow-up 5. After 1 to 2 minutes, the 1, or 3, or both numerals will change to constant, the compressor symbol will turn on and one or both compressors will start.

  • Page 15: Section 8: Troubleshooting

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 8: Troubleshooting Figure 14 Troubleshooting suggestions Condition Possible Causes Verifi cation Solution Incorrect power supply Check power supply Supply correct power Unit will not start Loose or broken wires...
  • Page 16 Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 8: Troubleshooting (continued) Figure 14 Troubleshooting suggestions (continued) Condition Possible Causes Verifi cation Solution Dirty coil, damaged or improperly Visually inspect coil condition and fan Clean coil, repair fan blade or motor as...

  • Page 17: Section 9: Maintenance

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 9: Maintenance Glycol/water mixture Close the isolation valves on either side of the y-strainer at the SpacePak heat pump/chiller return connection. Remove the screen and inspect for sediment. Clean if necessary.

  • Page 18: Section 10: Replacement Parts

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 10: Replacement parts Figure 16 Replacement parts PART NUMBER DESCRIPTION VENDOR PART NUMBER SCS036 SCS060 20000-320009 Carel Temperature Sensor NTC015WP00 (IP68,-55F to 212F, 5 Ft., 10K Ohm)

  • Page 19: Section 11: Performance Data

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 11: Performance data 3-Ton SpacePak chiller 5-Ton SpacePak chiller Cooling (47°F water) Cooling (47°F water) Ambient Capacity Chiller Chiller Chiller Ambient Capacity Chiller Chiller Chiller Temp...

  • Page 20: Section 12: Limited Warranty

    Model SCM Air to Water Heat Pump — Installation, Operation & Maintenance Manual Section 12: LIMITED WARRANTY Air to Water Heat Pump / Reverse Cycle Chiller The “Manufacturer” warrants to the original owner at the original installation site that the Air to Water Heat Pump / Reverse Cycle Chiller (the “Product”) will be free from defects in material or...

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