Section 4
INSTALLATION
17
4.1 MOUNTING OF COMPRESSOR
A foundation or mounting capable of supporting
the weight of the compressor, and rigid enough to
maintain the compressor frame level and the com-
pressor in alignment is required. The compressor
frame must be leveled and secured with foundation
bolts, and full uniform contact must be maintained
between the frame and foundation. No piping
loads shall be transmitted to the compressor a t the
external connections.
4.2 VENTILATION AND COOLING
For air---cooled compressors, select a location to
permit sufficient unobstructed air flowing in and out
to the compressor to keep the operating tempera-
ture stable. The minimum distance that the com-
pressor should be from surrounding walls is three
(3) feet (1m). To prevent excessive ambient tem-
perature rise, it is imperative to provide adequate
ventilation.
For water---cooled compressors, it is necessary to
check the cooling water supply. The water system
must be capable of supplying the flows shown in
Ta b l e I --- W a t e r S u p p l y R e q u i r e m e n t s ( W a t e r ---
cooled), and must be maintained at all times.
These figures apply to a compressor running at full
load with an aftercooler. For cooler water or a par-
tially loaded compressor, slightly less water is re-
quired. However, for hotter water the flow require-
ments are significantly greater.
Table 2---Ventilation Requirements indicates the
ventilation requirements necessary to keep the
compressor running at a normal operating temper -
ature. The fan air requirement is the volume of air
which must flow through the compressor for proper
ventilation. The specified heat rej ection require -
ment is the amount of heat that is radiated by the
compressor. This heat must be removed to assure
a normal operating temperature. With air---cooled
compressors it is possible to use this heat for space
heating, providing no additional pressure drop is
created across the fan. Consult a Sullair office for
assistance in utilizing this heat.
DO NOT install a water---cooled or an air ---cooled/
aftercooled compressor where it will be exposed to
temperatures less than 32_F(0_C).
4.3 SERVICE AIR PIPING
Service air piping should be installed as shown in
F i g u r e 4 --- 1 . A s h u t --- o f f v a l v e s h o u l d b e i n s t a l l e d t o
isolate the compressor from the service line if re-
quired. Also notice that the service line should be
equipped with water legs and condensate drains
throughout the system.
WARNING
!
“The Plastic Pipe Institute recommends against the
use of thermoplastic pipe to transport compressed
air or other compressed gases in exposed above
ground locations, e.g. in exposed plant piping.” (I)
Sullube 32 should not be used with PVC piping sys-
tems. It may affect the bond at cemented joints. Cer-
tain other plastic materials may also be affected.
(I) Plastic Pipe Institute, Recommendation B,
Adopted January 19, 1972.
(I) Water pressure should be between 25 and 75 psig (1.7 and 5.2 bar).
TABLE 1 -- WATER SUPPLY REQUIREMENTS (WATER -- COOLED)
WATER FL OW (I)
WATER TEMP. GMP (LITERS)
0˚F(˚C) 25HP (18KW) 30HP (22KW) 40HP (30KW)
70 (21) 3.75 (14.2) 4.50 (17.0) 5.75 (21.8)
80 (26.6) 5.00 (18.9) 6.00 (22.7) 7.50 (28.4)
Cooling Type Air---cooled with Aftercooler Water---cooled
Motor HP/KW 25/18 30/22 40/30 25/18 30/22 30/40
Fan Air CFM 2500/4250 2500/4250 3500/5950 720/1220 720/1220 720/1220
M
3
/Hr (II)
Ventilating Air/
Heat Rejection
BTU/Hour 76980/ 88800/ 118320/ 8500/ 10000/ 13000
KCal/Hour 19500 22500 29900 2150 2550 3300
Cooling Water/
Heat Rejection
BTU/Hour
Kcal/Hour
(II) Applies to compressor with canopy only (vent fan).
(I) Values based on: 100% RH, 85˚FAmbient
TABLE 2-- VENTILATION REQUIREMENTS (I)
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