SECTION 3 - HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
FORM 155.32-ICOM2.EN.UL
ISSUE DATE:1/10/2018
22
JOHNSON CONTROLS
INSTALLATION GUIDELINES
When evacuating the nitrogen charge (from the factory), be sure the area is properly
ventilated. Failure to do this could result in suffocation.
When exhaust gas is emitted from the smokestack, it is critical that it does not mix with the
cooling water in the cooling tower. This can lower the quality of the cooling water, resulting
in corrosion and scale formation. As sulfides and carbides contained in the exhaust gas are
condensed, low temperature corrosion occurs, resulting in tube perforations. This can
cause complications with the chiller-heater, and may result in a serious accident. The
smokestack and
cooling tower must be placed at least 16.7 feet (5 meters) apart. Wherever
possible, the smokestack should be positioned downwind of the cooling
tower.
When storing the absorption chiller unit after it has been delivered, note the following
potential issues:
1. Problems with machine in storage:
a. Breaking of thin pipes caused by freezing of the refrigerant (water) sealed in the
machine and resulting air leak.
b. Breaking and air leak due to external damage.
c. Deterioration of electrical parts caused by soot and dust.
d. Deterioration of electrical parts caused by rainwater (moisture).
e. Rusting of the machine body caused by rainwater (moisture). Air leaks can cause
serious damage and are costly repairs. Therefore, use diligence in keeping the ma-
chine body free from moisture at all times.
2. Problems and Preventative Measures
CAUTION: Gas pipe fittings must be installed by a qualified contractor. Defective gas
piping can cause an oxygen-deficient accident or a fire.
PROBLEM
PREVENTATIVE MEASURE
Freezing of
refrigerant
in machine
Store the machine where the ambient temperature is higher than 32°F (0°C). If the
ambient temperature drops below 32°F (0°C), use a heater to warm the machine. If a
heater is not accessible, the following options are available to prevent freezing:
• Extraction of the refrigerant
• Addition of antifreeze to the refrigerant
• Installation of a band heater
For further instruction, contact your nearest authorized Johnson Controls Service
Center.
External
Damage
Avoid storing the machine in a place which is easily accessible or near a construction
site. If this is unavoidable, use diligence to protect the machine. If the machine can not
be protected fill the interior with N2. This possibly minimizes the amount of air leakage
in the event of damage to the machine. This method, requires purging during machine
operation and is effective in preventing corrosion of the machine interior. For further
information on the sealing with N2 option, contact your nearest authorized Johnson
Controls Service Center.
Soot and
Dust
To protect the machine from soot and dust (or other air particulates) cover the entire
machine, including the control panel, instruments and gauges located on top of the
machine with a vinyl sheet. Use caution not to apply too much pressure to the controls
to prevent damage.
Rainwater
Avoid storing the machine in areas that are exposed to rainwater or other standing
water.
Humidity
Ventilate the storage area to keep the humidity low. Silica gel can be effectively used to
dehumidify the control panel and other machine parts.
