Coolerado C60A, Installation Manual

Page: 15 / 53

Coolerado Installation
Page
15
of 53
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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 same switch is also on the M50A post 10-
28-2013 but will cut the cool call preventing the wetting out
of the unit and the fan from running.
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 Table (per HMX), Figure 23.
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.
CAUTION: Failure to install an in-line water filter will void
system warranty.
NOTE: In addition to water pressure, water quality has a
major impact on performance. Reducing undissolved
particulates increases performance and longevity of the
system’s heat exchangers.
The filter will need to be changed when the pressure drop
across the filter reduces the main line water pressure below
25 psi at the units when they are calling for water, the toilets
are being flushed and the irrigation system is running.
Realistically the water pressure needs to be at least 40 psi.
How fast a water filter needs to be replaced depends on the
amount of un-dissolved minerals or debris that is in the
water.
0.0
1.0
2.0
3.0
4.0
110 100 90 80 70 60
H
M
X
Wate
r Usag
e
(gal
/H
M
X
-h
r)
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
H
M
X
Wate
r Usag
e
(Li
te
rs/HM
X
-h
r)
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
M30 3
M50A 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