Coolerado Installation
Page 22 of 63
5.) Install new air filters.
6.) Check that the unit’s fan will free spin by turning by
hand.
7.) Turn on the supply water and verify there are no
leaks.
8.) Open the cooled air-supply (or conditioned air)
damper and/or remove any air blocks that were
used to winterize the air conditioner.
9.) Turn on the power.
10.) Set the thermostat to a low temperature to get a
cool call to start the unit. The water will begin to fill
the cooling system. The first fill will take about an
hour to completely wet the heat exchangers if the
temperature is about 75
0
F (24
0
C) outside, 4 hours or
longer if about 100
0
F (38
0
C) outside. If the
thermostat is not calling for cooling, the heat
exchangers may not fully saturate with water at this
point. The air conditioner will fully wet-out when the
thermostat calls for cooling. Please be aware that
the water will cycle off for 2 minutes and then turn
back on based on the outside temperature and
humidity and air flow rate.
If there is a lot of soap in the unit at startup it may
take a day get all the bubbles out and the
temperature to come down to normal operation.
NOTE: When the thermostat is turned “Off” the fan
may not come on again for 2 minutes to prevent
fan short cycling.
11.) Set the thermostat to the desired temperature.
Normal Operating Procedure
Set the thermostat to the desired temperature.
In cooling mode, the thermostat will control the fan and the
water supply. Outside air is drawn through the fan, filtered,
cooled, and then delivered to the building. The cooled air is
delivered via standard air distribution ductwork to the
structure.
If the unit is located in a high-dust or high-contaminant area,
examine the air filters at least monthly and replace as
necessary.
Note: Do not dry heat exchangers at night by running the
blower using only cool night air. Doing so on a daily basis
will allow mineral deposits to build-up and void the HMX
warranty.
Seasonal Shut Down (regions where winter cooling is not
needed)
Note: If there is a possibility of freezing weather an
automated freeze protection system should be installed.
NOTE:
Failure to follow the following seasonal shut down
procedures may result in reduced performance to the heat
exchangers and may cause equipment damage.
1.) Inspect the unit to make sure that all safety devices
and other parts are secure.
2.) Turn the manual water supply valve off upstream of
the pressure regulator/solenoid valve assembly.
3.) Open the water supply line drain valve at the T and
drain off water in line. The water distribution valve
and water supply line will drain down to the T.
4.) Close the supply duct dampers and/or install off-
season duct blocking devices. The HMX’s will dry
themselves out in several days.
5.) Turn the thermostat to a temperature lower than
the room temperature for about 15 minutes so that
the water control solenoid valve will open and allow
all the water to drain.
6.) Turn off power to the unit.
7.) Close off the barometric damper for the winter
according to the manufacturer’s/contractor’s
instructions.
8.) Drain water filter housing if mounted outdoors.
9.) Set the thermostat to “heating” or to the “Off”
position.
Care and Maintenance Procedure, (see also Appendix 18)
For continuing high performance, and to minimize possible
equipment failure, periodic maintenance must be performed
on this equipment. Frequency of maintenance may vary de-
pending upon geographic areas, such as high dust, pollen or
air pollution. Pay close attention to cleanliness of the unit’s
filters and heat exchangers.
CAUTION: Failure to follow these instructions will shorten
the life of your heat exchanger and result in poor
performance of your system.
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