Water Cooled Portables

5 Ton Capacity These types of units need a source of domestic water and drain to facilitate the removal of the heat energy from the space being cooled. « Back to Hook It Up

Placement

1. Position the unit in the space to be cooled and in the location it will most effectively distribute cooled air. Consider proximity to people (for both drafts and noise), power source, water source and drain when determining the best location.

Electrical

2. Have a licenced electrician hook up the proper cable and breaker combination to electrically power the unit. These units require a three phase 220 volt circuit and use a Hubbell twist lock plug and will not run if the phasing is not correct. Incorrect phasing will be indicated by a lit red light on the front of the unit near the thermostat and will require the switching, by a qualified electrician, of any two of the power lines at the supply end of the cable only. Do not switch the phasing on our cord end or inside our unit as this can lead to equipment damage.

Setup - Supply Water (Water In) and Return Water (Water Out)

The 5 ton units use individual ¾” diameter high pressure water hoses in two colours, blue and black. Each female ¾” hose end should contain a rubber washer in good condition.

BLUE only for supply hose (Water In)
BLACK only for return water (Water Out) which should be warm
CLEAR BRAIDED 3/8” hose is used to carry the condensate water away
Typical lengths are 25, 50 and 100 feet.

3. Leaving enough hose to make any necessary connections to the Supply water and to reach the drain, run each hose from the water source to the unit. It is preferable to run any hose through a false ceiling to prevent any tripping hazards, making sure that no kinks occur along the way that would restrict the water flow. All hose connections made along the run must also be tight so as not to leak. Before attaching the hoses to the unit, arrange any excess hose neatly near the unit and avoid kinks or sharp turns. Connect (hand tight only) the Blue hose to the Water In and the Black hose to the Water out. Use two wrenches to securely connect the Clear braided 3/8” condensate line to the Condensate connection being careful again not to overtighten.
   
   
4. Finally, return to the water source and connect, again only hand tight, the Blue Supply Water hose (Water In) hose to the water source under the sink using our custom sink kit. We will email or fax copies of a completed installation to you. Arrange the Blue Supply Water line to minimize any impact on the use of the sink. Next, arrange the Black Return Water (Water Out) hose and the Clear Condensate hose in the drain. Tie the drain hoses in place to make sure they stay in place and check that the drain is fully open and the water drains quickly away. If it does not drain freely, have the current one cleared or use another one that is better.
   
   
5. Turn the Supply Water on to pressurize the hose and CHECK each and every connection carefully to make sure there are no drips or leaks.

Condensate

6. All air conditioning units remove humidity or water vapour from the air that they are cooling. This humidity is captured in the form of water and collects inside our equipment in a condensate reservoir. A condensate pump is used to automatically pump the condensate out of the machine and through the condensate drain line (clear braided line already installed above) to a drain.

Operation

7. When all of the installation requirements have been satisfied, including a check for water leaks, and the unit is powered on, you are ready to operate the machine. These units are controlled by a thermostat mounted on the front of the unit. Our Cool Air technicians can assist with setting of the thermostat if necessary.
   

Start (assumes use of white externally mounted thermostat)

8. To start the cooling process, the LCD screen of the Thermostat must read COOL. If it does not, then lift up the cover from the bottom and press the MODE button until the screen does read COOL. Assuming that the desired temperature (SET POINT temperature) is below the ambient room temperature, the Supply Air fan will start to blow air after a few seconds and the compressor will start after a countdown of up to 2 minutes. The Supply air fan can be set to run independently of the compressor so it will continue running even when there is no demand for cooling by pressing the fan button so that the fan icon appears on the LCD screen.
   
   
9. Once you have selected the COOL mode, and assuming that the ambient air temperature is higher than the SET POINT temperature indicated by the thermostat, a countdown of up to 2 minutes will begin.
   
   
10. The initial temperature shown on the LCD display is the actual room temperature. The desired temperature (SET POINT) is set by pushing either of the UP or DOWN arrows.
    
    
11. After the countdown period has elapsed, the unit will switch the compressor and the condenser fan on, starting the cooling process.
    
    
12. The Evaporator fan (the one that supplies air to the room) can be set to continuous operation by pushing the fan button until the Fan icon is lit in the LCD display. This fan will then operate continuously, regardless of whether the unit is cooling or not.
    
    
13. Simultaneously press the UP and DOWN arrows to switch the unit between Celsius (C) and Fahrenheit (F) temperature display.
    
    
14. In the event of a power failure, the unit will restart in the same MODE and at the same SET POINT it was at prior to the power loss.
    
    
15. The OUTDOOR and DAY/NIGHT buttons are not used in your application.
    

Stop

16. To stop the machine, simply press the MODE button on the Thermostat till it reads OFF and the cooling process will stop. The fan may need to be turned off too if it is set to run continuously. The unit can be restarted immediately but the cooling process will not start until after the mandatory countdown of about 2 minutes.

These are complex machines and if you follow these installation instructions closely you should have trouble free usage. However if something should go wrong with the unit or you are unsure of proper procedures please call us immediately – Cool Air Rentals Ltd – 604.253.4171. Continued improper use of any unit can result in damage to the unit and costly repairs.



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