Owner`s manual
Carefully examine your QuietCool shipping carton. If your carton is 
damaged – notify the shipper immediately! (There may be damage to unit). 
1. Unpack your new QuietCool unit 
Your QC48B2” unit was shipped on a wooden skid strapped to a cardboard 
cover with lid. First remove the straps from the base where cardboard meets the 
skid – then you may lift the whole cardboard box (and lid) off the unit and skid. 
Lift your QuietCool unit off the wooden skid. Now roll your QuietCool unit to a 
level surface and lock the casters to prevent accidental movement. 
2. Connect the water supply 
Connect standard water hose to female fitting on the right side of your QuietCool 
(fan blade side). If your water pressure is above 60 psi you must use a pressure 
regulator (found at your local hardware store). Note: Do not connect to water 
source exceeding 60 psi – this can cause 
damage to your unit. 
3. Connect the electrical supply 
Your QuietCool model requires a regular 3 
prongs, ground with 120 volt power supply. 
Plug electrical cord into receptacle. To be 
safe – make sure no other equipment is 
plugged into the same circuit. Your 
QuietCool will run smoothly on a standard 
20 amp, 120 volt, 60 Hz circuit. If you need 
to use an extension cord – use a 12 gauge 
3 prong extension cord. 
4.
 Fill the QuietCool reservoir 
with water 
Once your water hose is 
securely connected – open the 
water flow control handle 
(located on the front of your 
unit) 1 1/4 turns. This water flow 
control handle adjusts the 
amount of water going to the 
unit’s reservoir. Turn-on water 
and fill the reservoir. Listen 
carefully. You can hear water 
filling the reservoir. Check your water connection – make sure there is no 
dripping. Once the reservoir is filled the float valve will automatically shut-
off the water source. Once the water shuts off – you know that the float 
valve is fully operational. 
5. Turn-on the water pump  
Flip the toggle switch for the water pump to “On”. Toggle switch is located 
on front side of unit. The water pump will now begin pumping water to the 
top / back of the unit so that gravity will allow the water to run down the 
backside of unit onto and into the cooling pads. Allow water to run for 10 
– 15 minutes on new cooling pads to totally saturate them with water. 
Once your units cooling pads are saturated – then, you are ready to turn 
on fan and begin to feel the cooling effect from your new QuietCool. 
Note: After your cooling pads are broken in (typically 1 -2 weeks) it will 
take less time to fully saturate cooling pads for initial start-up. 
6. Turn-on Fan 
Once your pads are wet – you may turn your QuietCool unit on high. Now 
you can begin to feel the QuietCool difference in temperature. After your 
QuietCool has run for 5 minutes or so, visually inspect the pads – if water 
is dripping outside the unit – you have too much water, simply turn the 
flow valve handle to the right 1/4 turn and inspect water flow in another 5 
minutes. If you see dry streaks in the cooling pads – open the flow valve 
handle 1/4 turn to increase water flow to the cooling pads – check water 
flow in another 5 minutes and adjust accordingly. Most QuietCool units 
work effectively with valve opened between 1 – 1 1/4 turns. 
Note: Back your QuietCool unit up to a fresh air source like an open door 
or window so the unit can pull in fresh air from the outside. Next, make 
sure you have a natural exhaust at the opposite end of the room, such as 
a window or door. This will ensure maximum efficiency from your unit. 
Quietaire Cooling Inc.
A Subsidiary of Quietaire Corporation 
Telephone: 713.228.9421 Fax: 713.228.9425 
505 North Hutcheson  Houston, Texas 77003 
www.Quietaire.com 
48” Quick Start
Connect water hose to unit,
then plug into standard 120 
Volt electrical 20 Amp source. 
Open water flow
valve 1 ¼
turns to allow water to fill 
reservoir. 










