{ "item_title" : "Practical Controls", "item_author" : [" Steven R. Calabrese "], "item_description" : "Geared toward the HVAC professional, Practical Controls: A Guide to Mechanical Systems provides a solid foundation and well-rounded understanding of the role of controls in mechanical systems design and installation. This book takes a concise look at HVAC controls and controls methods - including electrical, electronic, and microprocessor-based controls and control systems. Using real world examples, it explores how various mechanical systems installed in today's facilities are best controlled. The text is a practical resource to controls contracting, providing basic rules, equipment guidelines, rules of thumb, pros and cons, and do's and don'ts.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/8/77/004/598/8770045984_b.jpg", "price_data" : { "retail_price" : "76.50", "online_price" : "76.50", "our_price" : "76.50", "club_price" : "76.50", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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