Coolerado C60A, Руководство по установке

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Coolerado Installation
Page
21
of 53
then cycle the water on for 30 seconds and off for 2 minutes
repeating this over a 42 minute period.
The water control will then be regulated according to outside
temperature, humidity, dynamic water pressure at the unit
(water flow), as well as the fan speed and control settings.
Check outlet temperature after 2 hours of system operation.
If the conditioned air temperature (dry bulb) is within 3
o
F, (-
16
o
C), of the inlet wet bulb temperature, no other action is
needed.
NOTE: If there is excessive soap in the unit at start up, it may
take a day to dispense all bubbles and the temperature to
come down to normal operation.
If the conditioned air temperature (dry bulb) is more than
3
o
F, (-16
o
C), above the inlet wet bulb, manually turn the
water off and let unit run for 20 to 45 minutes depending on
the outside temperature, (hotter shorter time). Turn off the
power to the unit for 15 seconds, turn water back on, and
restart the unit to allow the wetting process to start over.
Because of the partially wet HMX’s and recent wetting out
there may be a lot of bubbles.
During normal operation, when the thermostat gives a
cooling call it will activate the water control board. The fan
and the water cycle will start immediately. The water will go
off for 2 minutes after initial wetting that is dependent on the
temperature and humidity then cycle as needed 2 minutes off
and on as needed.
Without a cooling call for a period of 1 hour, the water
control board will douse the heat exchanger with fresh water
to ensure the heat exchanger remains saturated. The water
will cycle on for 2 minutes, then off for an hour starting a new
cycle.
Step 15 – Operational Startup
1.) For the M30 and C60 turn the fan switch on the top
front of the unit off. The M50A fan will shut down
when the filter cover is removed.
2.) Remove all electrical and soap pump cover plates
3.) Turn offf the cool call or disconnect the cool call by:
a.
M30 and C60 disconnecting the wire at the RC
terminal on the left side of the water control
board as seen standing in front of the unit, (not
the transformer connections R and C terminals).
b. M50A disconnecting the wire at the RC terminal
in the low voltage junction box at the bottom of
the unit.
4.) Power up the unit.
5.) Prime the soap pump by pressing the button on the
Manual Overide Switch, see
Figure 32 . 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 26 .
9.) Reinstall the air filters.
10.) Install the filter cover door.
11.) On the M30 and 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.