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P/N SCM2-0111 Copyright 2011 Mestek, Inc.
SCM2-0111
W30-WG0593
Installation, Operation
& Maintenance Manual
MODEL
SCM
Air to Water Heat Pumps
Reverse Cycle Chillers
3 and 5 Ton
IN UNITED STATES: 260 NORTH ELM ST. WESTFIELD, MA 01085 (413) 564-5530 / FAX (413) 564-5815
IN CANADA: 7555 TRANMERE DRIVE, MISSISSAUGA, ONTARIO, L5S 1LR (905) 672-2991 / FAX (905) 672-2883
Qualified installer only
—
This product must be installed
only by a qualified service tech-
nician. The installation must be
done using recognized indus-
try practices, and in compli-
ance with this manual and all
applicable codes. Failure to
comply could result in death,
serious injury or substantial
property damage.
For information not included in this
manual, see the following:
This manual
includes only basic information for in-
stallation, operation and maintenance of
SpacePak air to water heat pumps. For
more advanced applications and infor-
mation not shown in this manual, contact
SpacePak Technical Support for assis-
tance and supplemental instructions. Call
413-564-5530 in Westfield, MA or visit our
website at www.spacepak.com to send an
e-mail or review technical literature.
Section 1: ReAD BeFoRe PRoceeDinG
Model SCM overview . . . . . . . . . . . . . . . . . . . . . . . .2
Section 2: SPeciFicAtionS AnD RAtinGS
Section 3: DiMenSionS
Section 4: LocAtion & MoUntinG
Prepare the unit . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Mounting pad. . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Section 5: GLycoL/wAteR SySteM
Glycol/water system design . . . . . . . . . . . . . . . . . . . . .8
Glycol/water system installation . . . . . . . . . . . . . . . . . . .8
Section 6: eLectRicAL connectionS
Overcurrent protection & wire sizing . . . . . . . . . . . . . . . . .9
Optional low ambient adjustment . . . . . . . . . . . . . . . . . .9
SpacePak heat pump/chiller wiring . . . . . . . . . . . . . . . . .9
Multiple air handler applications . . . . . . . . . . . . . . . . . . .9
Section 7: StARt-UP AnD teSt
BEFORE starting the unit . . . . . . . . . . . . . . . . . . . . . 11
Start the SpacePak heat pump/chiller . . . . . . . . . . . . . . . 11
Anti-freeze cycle . . . . . . . . . . . . . . . . . . . . . . . . . . 11
24-Hour follow-up . . . . . . . . . . . . . . . . . . . . . . . . . 11
Section 8: tRoUBLeShootinG
Section 9: MAintenAnce
Glycol/water mixture . . . . . . . . . . . . . . . . . . . . . . . . 13
Perform annual inspection . . . . . . . . . . . . . . . . . . . . . 13
Preparing the SCM for shut down . . . . . . . . . . . . . . . . . 13
To restart after shutdown. . . . . . . . . . . . . . . . . . . . . . 13
Section 10: RePLAceMent PARtS
Section 11: PeRFoRMAnce DAtA
3-Ton SpacePak chiller. . . . . . . . . . . . . . . . . . . . . . . 15
5-Ton SpacePak chiller. . . . . . . . . . . . . . . . . . . . . . . 15
Section 12: LiMiteD wARRAnty
