hVac controls guide for Plans examiners and Building inspectors

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Control requirementsfor Simple SystemsEconomizersp. 24p. 24water loopdesigned for over300 kBtu/hr?YesHydronic systemsp. 27NoEndHydronic — Using water. A hydronic system is onethat circulates heated or chilled water through a loopto provide comfort in a zone or to provide the heatsource or sink for HVAC equipment.Zones — Portions of a building served with heating,cooling and ventilation. Zones have similar HVACrequirements and can therefore be served with asingle thermostat or set of sensors and a singlecontrol strategy.6 How to Use this Guide
Prescriptive requirementsfor Complex Systemsp. 28EconomizersVAV fansHumidity controlp. 28p. 30p. 34Water loop(s)?NoYesHydronic systemsp. 35Water loopserves heat pump(s)or water-cooledA/C?NoYesHydronic heat pumpand A/C systemsp. 40Fan speed control for heatrejection equipmentp. 42Multi-zone?YesMulti-zone systemsp. 44NoEndHow to Use this Guide 7
Page 2 and 3: ContentsIntroduction ..............
Page 5: Commercial buildingControl requirem
Page 9 and 10: Code Requirements andCompliance Che
Page 11 and 12: Control Requirements for All System
Page 13 and 14: Figure 4: Sample control sequence s
Page 15 and 16: d) Automatic setback and shutdown c
Page 17 and 18: Figure 9: VSD installed on a supply
Page 19 and 20: Figure 13: Motorized damperFigure 1
Page 21 and 22: Building InspectionSuggested Compli
Page 23 and 24: 4) The supply of outside air is red
Page 25 and 26: ) Control strategyEconomizers must
Page 27 and 28: 4) The supply of outside air is red
Page 29 and 30: must be positioned well down the du
Page 31 and 32: Figure 23: BAS screen shot indicati
Page 33 and 34: Code SectionsIECCASHRAE2009: NA 200
Page 35 and 36: Figure 27: Illustrated control sequ
Page 37 and 38: Code SectionsIECCASHRAE2009: 503.4.
Page 39: Building InspectionSuggested Compli
Page 42 and 43: Building InspectionSuggested Compli
Page 44 and 45: Figure 38: Sample control sequence
Page 46: Building Technology ProgramThe U.S.

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