"This is a difficult tie and we're expecting a tough test, but I know we can rely on the fans at the Echo Arena to play their part by whipping up an electric atmosphere and urging our boys to victory."
The losing team will drop down into Euro/Africa Group Two.
Great Britain hold a perfect record over Poland in Davis Cup, having won all seven meetings between the two nations.
The most recent victory came in Poland in 1991, with Britain claiming the tie 4-1.
Murray missed the defeat by Ukraine in March because of a virus.
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