HVAC DESIGN MANUAL 02-00
Attachment No. 6
Climatic conditions for the Department of Veterans Affairs
DESIGN TEMPERATURES
Attachment No. 5 SELECTION GUIDE FOR VIBRATION ISOLATORS
See Paragraph 2.7.
Use the following for selecting the vibration isolators. Schedule on the drawings.
EQUIPMENT LOCATION
EQUIPMENT
ON GRADE
20FT FLOOR SPAN
30FT FLOOR SPAN
40FT FLOOR SPAN
50FT FLOOR SPAN
BASE
ISOL
MIN
BASE
ISOL
MIN
BASE
ISOL
MIN
BASE
ISOL
MIN
BASE
ISOL
MIN
TYPE
TYPE
DEFL
TYPE
TYPE
DEFL
TYPE
TYPE
DEFL
TYPE
TYPE
DEFL
TYPE
TYPE
DEFL
REFRIGERATION MACHINES
ABSORPTION
---
D
---
---
SP
1.0
---
SP
1.0
---
SP
1.7
---
SP
1.7
PACKAGED HERMETIC
---
D
---
---
SP
1.0
---
SP
1.7
---
SP
1.7
R
SP
2.5
OPEN CENTRIFUGAL
B
D
---
B
SP
1.0
---
SP
1.7
B
SP
1.7
B
SP
3.5
RECIPROCATING:
500 - 750 RPM
---
D
---
---
SP
1.7
R
SP
1.7
R
SP
2.5
R
SP
3.5
751 RPM & OVER
---
D
---
---
SP
1.0
---
---
1.7
R
SP
2.5
R
SP
2.5
COMPRESSORS AND VACUUM PUMPS
UP THROUGH 1-1/2
---
D,L,
---
----
D,L,
---
---
D,L,
---
---
D,L,
---
---
D,L,
---
HP
W
W
W
W
W
2 HP AND OVER:
500 - 750 RPM
---
D
---
---
S
1.7
---
S
2.5
---
S
2.5
---
S
2.5
750 RPM & OVER
---
D
---
---
S
1.0
---
S
1.7
---
S
2.5
---
S
2.5
PUMPS
CLOSE COUPLED:
UP TO 1-1/2 HP
---
---
---
---
D,L,
---
---
D,L,
---
---
D,L,
---
---
D,L,
---
W
W
W
W
2 HP & OVER
---
---
---
I
S
1.0
I
S
1.0
I
S
1.7
I
S
1.7
49
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