Control of its temperature is best, awareness of the effect of the ambient temperature at worst is needed.
http://www.kegerators.com/articles/carbonation-table-pressure-chart.php
the keg alone is just the storage aspect of the dispensing system.
a combination of gas pressure and temperature control allow you to create and maintain the ideal level of condition for your beer,
the pressure used to maintain the keg pressure dictates the pressure balancing measures you take to reduce the pressure at the tap point to a level below that which will stimulate a foam out.. the 3/6" microline suggested by BaggyBill above is the usual solution, tho flow control taps and inline devices can also be used, in my limited experience of my own flow control taps they are ok for lower pressures (upto 6-8psi) but pants above..
most folk use a fridge mod to store the kegs at the ideal temp, i dont have the room, so my kegs sit in an outhouse ok this time of year but come summer i need to run a shelf chiller to serve anything but foam.
its doable without temp control, but needs a lot more tweaking, generally a vent of any excess pressure build up is all thats needed before a session but if the temps changed dramatically since the last pour you may also need to tweak the gas pressure too.
Knock the pressure down with rising temps and up with dropping temps keeping the kegs stable during the day/night cycle with insulation.
If the kegs vary in temp during the day too your never gonna win...
if you have room a keg fridge is the way to go...
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