Coolerado M50C - Page 14

Coolerado Installation
Page 14 of 63
 It is also suggested to install ½ in. ball valves to the
main water line of the unit if installing multiple.
This will allow individual units to be shut off during
maintenance rather than shutting all units off.
The water connection is a ½” (12.7 mm) FNPT at the unit
base. The water pressure at this connection must be between
40 psi (225 kPa) and 80 psi (550 kPa). For your convenience,
Appendix 14 provides water pressure drop information. Note
that the water pressure will decrease 1 psi for every 27.7”
(9.8 kPa for every 1 m) of height do to gravity. So for a 30’
(9.14 m) rise, the water pressure will decrease by 13 psi (90
kPa), this does not include pressure drop due to friction in the
piping and pipe fittings.
Note: A Water Pressure Switch has been installed on the
water line inside the unit that will disconnect the fan control
wire turning the fan off until the water pressure rises again,
see Figure 25. This means a dirty water filter or low water
main pressure will turn the fan off. If the main water
pressure is low a, booster pump may be required.
CAUTION: Dynamic water supply pressure of between 25 PSI
(172 kPa) and 80 PSI (550 kPa) is required at the unit.
Water Consumption:
Water consumption or water usage is based on the outdoor
temperature, humidity and air flow rate. The water is turned
off for two minutes than back on for the length of time
needed to keep the HMX’s with adequate water. The water
usage is shown in the attached tables.
Water Consumption Table (per HMX), Figure 24.
WATER FILTER
WARNING: INSTALL the IN-LINE 30 micron WATER FILTER
supplied with unit. The water filter should be installed
upstream (before) any solenoid valves or water pressure
regulator on the Coolerado unit so that these devices will be
protected by the water filter.
0.0
1.0
2.0
3.0
4.0
110 100 90 80 70 60
HMX Water Usage (gal/HMX
-hr)
Ambient Temperature (F)
Coolerado Water Usage per HMX
0 F Dew Pt
20F Dew Pt
40F Dew Pt
50F Dew Pt
60F Dew Pt
70F Dew Pt
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
43 38 32 27 21 16
HMX
Water Usage (Liters/HMX
-hr)
Ambient Temperature (C)
Coolerado Water Usage per HMX
- 18C Dew Pt
- 7 C Dew Pt
4 C Dew Pt
10 C Dew Pt
16 C Dew Pt
21 D Dew Pt
Model
Number of HMX’s
M50
5
C60
6
NOTE:
1. Assume full product flow rate at 1400 cfm or 40
m
3
/min (M50)
2. Water usage rates are +/- 15%
3. Drain water equals approximately 25% of total
water usage and drains on a continuous basis