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FORM 155.32-ICOM2.EN.UL SECTION 3 - HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
ISSUE DATE:1/10/2018
JOHNSON CONTROLS 27
PRECAUTIONS FOR USE
Ventilate the storage area as much as possible to keep the humidity low. Avoid storing the
unit in an area where the humidity is 95%RH or higher, and the temperature is 40°C
(104°F) or higher. For more information about long term-storage, refer to
Long-term
Storage Requirements (Form 50.20-NM1) and Long-term Storage Checklist (Form 50.20-
CL4) .
Silica gel can be used on a temporary basis to dehumidify the control panel, but should be
removed once the moisture is absorbed. Otherwise, the silica gel can corrode the electrical
parts of the control panel.
Do not allow negative pressure or any devices that create negative pressure to operate in
the area around the chiller-heater. This may cause incomplete combustion, resulting in gas
inhalation and hypoxia.
To prevent injuries, do not put a finger, a rod, or anything else into any rotary parts of the
vacuum pump.
A caution label for a rotating object is pasted around the belt cover of the vacuum pump.
When replacing the oil in the vacuum pump, belt, or performing maintenance work, stop the
chiller-heater and be sure to turn off the main circuit breaker (MCB1) and lockout/tagout the
unit. If this is not done, the vacuum pump could start abruptly and cause injury or damage
to the unit.
Do not place any heavy objects on the machine or its control panel; it may fall and cause
injury.
Do not climb up the unit without safety harnessing.
Contact your local Johnson Controls service office for inspection and maintenance of the
unit. Improper inspection and maintenance can not only cause a machine malfunction but
also injury.
Keep the chilled/hot water and cooling water under the maximum usage pressure. If they
exceed the maximum usage pressure, they may spout or leak and may cause an electric
leak and injury.
Do not change the set values of the safety devices and protective devices. Operation with
incorrect set values can cause a malfunction.
In the event that the circuit breaker or disconnect switch is activated, eliminate the cause of
the problem before restarting the unit. See
SECTION 8 – TROUBLESHOOTING .
The shut off valve for the pressure release valve must constantly remain open. It may only
be closed when servicing the pressure relief valve. The unit must never be operated with
this shut off valve closed.
Verify the main valve for the fuel gas is closed before servicing the chiller-heater. Only a
Johnson Controls service representative can modify the main gas valve or any of the fuel
control devices after the chiller-heater has been serviced. Operation of the chiller-heater by
an inexperienced person could result in incomplete combustion, fire, or injury.
Do not touch any part or component displaying a high temperature caution label while the
machine is in operation. This includes the control panel, solution pump, vacuum pump and
any piping entering or exiting the solution and vacuum pump.
Periodically inspect the strainers to prevent clogging and incomplete combustion.
Wear protective gloves and goggles when operating the chiller-heater.
Do not operate the machine with panel doors open or removed. Exposure to rainwater or
wind pressure can damage the electrical parts of the unit or cause leakage.