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All downloads are in PDF format, go to to download the latest pdf reader

ACOP L8 (4th Edition)
HSG 274 Part 1
(cooling towers)
HSG 274 Part 1
(hot & cold water systems)
HSG 274 Part 3 
(misc systems)
HSG 282 (spas & pools)
HTM 04-01 Part A
HTM 04-01 Part C
HTM 04-01 Part B
HTM 04-01 Supplement
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