Hydronic System Design Manual - GARN（液体循环加热的系统设计手册接着说下去!）.pdf

GARN® System Design Manual Hot Water Supply 2” FPT Hot Water Return 1-1/2” MPT DECTRA CORPORATION • 3425 33rd Ave NE • St Anthony, Minnesota 55418 Phone: 612-781-3585 • Fax: 612-781-4236 • ©2012 DECTRA CORPORATION. All rights reserved. No part of the contents of this manual may be reproduced or transmitted in any form or by any means without the written permission of DECTRA CORPORATION. Hydronic System Design Manual 1 ©DECTRA CORPORATION - March 2013 The GARN® unit, all related heating equipment (including pumps, piping, fan coils, hot water baseboard, radiant floor heating systems, etc) and all electrical equipment (including power wiring, controls, control wiring, back up electric heating, etc) must be installed by a qualified installer or competent licensed personnel in strict compliance with all Federal, State and local codes. All electrical equipment, devices and wiring installed with the GARN® unit must be UL listed. Installer to supply and install all code required electrical over current and disconnect devices. Table of Contents A. SYMBOLS, ABBREVIATIONS, and safety symbols: 4 B. PROMOTING CONSERVATION AND EFFICIENCY BEFORE ANYTHING ELSE: 5 PROBLEMS WITH IMPROPERLY COMBUSTED FUEL: 5 HEATING A SWIMMING POOL: 5 C. RULES OF THUMB FOR AN INITIAL ESTIMATE OF EQUIPMENT SIZE 6 COMMERCIAL HEAT LOSS: 6 RESIDENTIAL HEAT LOSS EXCLUDING VENTILATION:6 RESIDENTIAL VENTILATION: 6 RESIDENTIAL DOMESTIC WATER HEATING: 7 HOT TUB HEATING: 7 RADIANT FLOOR HEATING: 7 FORCED AIR HEATING: 8 HOT WATER BASEBOARD HEATING: 9 GLYCOL CORRECTION FACTORS AND FREEZE PROTECTION TABLES:10 The difference between freeze and burst protec