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(600 recommended) 182 'a' min. 100 1010 696 168 'a' 300 min. (600 recommended) min. 100 964 664 170 'a' 300 min. (600 recommended) SP520 'X' 'X' a d c b A B C D E SP420 480 240 566 558 1158 SP520 840 280 554 546 1146 SP920 480 240 566 558 1158 A B MAN AUTO ON OFF S4 S3 S2 S1 ON OFF S3 S2 S1 SP520 SP420 SP920 SP420 SP520 & SP920 7 8 9 10 a b a b 11 12 10a SP520 SP420 SP920 X Y A B C SP520 & SP920 Wall Fires Models: SP420, SP520 & SP920 IMPORTANT: THESE INSTRUCTIONS SHOULD BE READ CAREFULLY AND RE