Section 4
INSTALLATION
29
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. It is recom-
mended that the frame be grouted to the founda-
tion. The compressor unit and driver must be
aligned after installation as specified in this
Operator’s Manual. No piping loads shall be trans-
mitted to the compressor at the external connec-
tions.
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 (914mm). To prevent excessive ambient
temperature rise, it is imperative to provide ade-
quate ventilation.
For water-cooled compressors, it is necessary to
check the cooling water supply.
The water system must be capable of supplying
quantities as shown in Table 1- Cooling Water
Supply.
Table 1- Cooling Water Supply
MODEL WATER FLOW (GPM)
Flow @ 80°F
25-150L 28
25-150H 28
25-200HH 44
25-200XH 44
Water flow requirements are based on 80°F (27°C)
water inlet temperature.
Recommended water pressure range is 25 to 75
psig (1.7 to 5.2 bar).
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 rejection 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 excessive pressure drop is not
created across the fan. Consult a Sullair office for
assistance in utilizing this heat.
DO NOT install a water-cooled or an air-cooled/af-
tercooled compressor without adequate freeze pro-
tection where it will be exposed to temperature less
than 32°F(0°C).
4.3 SERVICE AIR PIPING
Service air piping should be installed as shown in
Figure 4-1. A shut-off valve should be installed to
isolate a 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.
4.4 COUPLING ALIGNMENT CHECK
In preparation for the factory test, the coupling sup-
plied with your compressor is properly aligned for
operation. However, due to shipping and handling,
it is necessary to recheck the coupling alignment.
Refer to Coupling Alignment procedure explained
in the Maintenance section of this manual.
4.5 FLUID LEVEL CHECK
Your air compressor is also supplied with the prop-
er amount of fluid. However, it is necessary to
check the fluid level at installation. The level is
checked by looking at the sight glass located on the
sump. If the sump is properly filled, the coolant level
should fill 1/2 of the sight glass when shutdown.
4.6 ELECTRICAL PREPARATION
Interior electrical wiring is performed at the factory.
Required customer wiring is minimal, but should be
done by a qualified electrician in compliance with
OSHA, National Electrical Code, and any other ap-
Table 2- Ventilation Requirements
Cooling Type Air-cooled Water-cooled
Motor HP 150 200 150 200
Fan Air CFM 12,000 15,000 2,845 (I)
Heat Rejection to ventilating air BTU/min. 7,527 9,700 750 970
Heat Rejection to water, BTU/min 6,777 8,730
(I) Applies to compressors with canopy only (vent fan).
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