IMM AGS-2
13
Vibration Isolators
Vibration isolators are recommended for all roof-mounted installations or wherever vibration
transmission is a consideration. Initially installed the unit on shims or blocks at the illustrated "free
height" of the isolator that is six inches for the McQuay isolators shown. When all piping, wiring,
flushing, charging, etc. is complete, adjust the springs upward to load them and to provide clearance
to free the blocks, which are then removed.
Installation of spring isolators requires flexible pipe connections and at least three feet of conduit
flex tie-ins. Support piping and conduit independently from the unit to not stress connections.
There are separate weight and isolator tables for copper fin coils. All other coil types, such as
ElectroFin and Blackfin, use the aluminum fin data.
Isolator bolting
: the unit base is an enclosed box design and may have six or ten mounting
locations, depending on the date of manufacture. Mounting locations M1 and M2 at dimension “C”
and locations M5 and M6 at dimension “E” are not used. Locations MM1, MM2, M3, M4, MM5
and MM6 have access holes on top of the base, above the lower mounting holes and should be used
for all isolator types. One simple method of bolting the base to the isolators (if required) is to
remove the short threaded studs, usually provided with isolators, and replace them with eight-inch
threaded rod. The rod will extend above the top of the base and a washer and nut can then be easily
attached.
Figure 14, Mounting and Lifting Dimensions
“G”
“E”
“F”
“D”
“C”
M6
L3
M4
L2
M2
M5
L4
M3
L1
M1
“A”
“B”
COG
44.00
330712801D0400_R0A
C
O
N
T
R
O
L
B
O
X
“EE”
“CC”
MM2
MM6
MM5
MM1
NOTE
: Dimensions are on the following page.
