Coolerado Installation
Page 21 of 63
4.) Power up the unit.
5.) Prime the soap pump by pressing the button on the
water control baord, see Appendix 2. Soap should be
just entering the T in the line before the header).
6.) Turn on the water and check for leaks at the
solenoid valve connections.
7.) Create a “cool call” by closing contacts across
terminals RC and Y on the water control board and
check for leaks; (do not deliver voltage to Coolerado
Water Control Board Y and RC terminals) .
8.) With the water pressure gage mounted between the
header and the solenoid valve, adjust the water
pressure according to Table 2, see Figure 27.
9.) Reinstall the air filters.
10.) Install the filter cover door.
11.) On the C60 Turn on the fan switch.
12.) Replace cool call wiring for normal operation.
13.) Install covers over soap pump and low voltage
electrical box.
14.) Adjust thermostat set point below room
temperature to call for cooling.
15.) After initial wetting period (approx. 1 hour), inspect
for system cooling operations.
16.) Inspect supply diffusers for excess noise or whistling.
17.) Inspect for vibration or abnormal noise.
18.) The supply or product air stream static pressure
should be higher than the working air or exhaust air
stream by about 0.01 to 0.5 inches of water column
(2.5 Pa to 125 kPa). This helps to prevent water from
leaking from the working air side to the product side.
These pressures should be taken very near to the
exhaust plenum and the product plenum at points
that are at 90 degrees to the direction of air flow.
This will require a small hole in the product duct and
exhaust duct. If side exhaust louvers are used, (no
exhaust duct), with even small product side pressure
the exhaust pressure should be less.
19.) Check supply dynamic water pressure to the units
and record, (between 25 and 85 psi) (between 172
and 586 kPa).
The water will begin to fill the Coolerado HMX’s. 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.
NOTE: If the thermostat is not calling for cooling when the
units are first powered up, the heat exchangers may not
fully saturate with water at this point.
NOTE: 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.
Step 16 – Final Checks
NOTE: Before leaving the job site, be sure to do the
following:
1.) Ensure that all wiring and water connections are
secure.
2.) Make sure that the unit’s filters are installed
properly and are clean.
3.) Securely fasten all panels / covers and ensure all
system fasteners are tight.
4.) Leave the Owner’s Manual with the customer.
Explain the system and thermostat operation.
5.) Discuss the importance of periodic maintenance
requirements outlined in the owner’s manual.
6.) Fill out the Initial Installation data sheet within this
installation manual.
7.) Be sure to talk to the customer about the general
maintenance, winterization procedure, and to watch
for potential intake airflow restrictions.
8.) Ensure the supply registers are diffused properly and
free of whistling.
9.) Ensure all duct work is sealed, insulated and secured
properly.
10.) Be sure the customer knows where to purchase
more water and air filters.
11.) Ensure the supply registers are defused away from
heavy traffic areas and not directly on the customer.
12.) Discuss any periodic preventive maintenance plans
your company may offer.
Post-Installation/Seasonal Start-Up Procedure
1.) Inspect the unit to make sure that all safety devices
and other parts are secure.
2.) Install new water filters (minimum of 30 micron).
3.) If needed vacuum out intake air plenum.
4.) Check the level of surfactant in the wetting system.
Top off the reservoir with Dawn or Palmolive
dishwashing detergent, if necessary.
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