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Carrier specifications Ð 37HS Control Combinations cont

Models: 37HS

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Table 15 Ð 37HS Control Combinations (cont)

			CONTROL
NO.	FUNCTION	MODEL	PACKAGES	CONNECTION ARRANGEMENT
			REQUIRED
	SYSTEM POWERED		37HS900003
	VARIABLE VOLUME		37CM900972 (NO)
	COOLING	37HS1	with
	PNEUMATIC	37HS1	37HS900007 (DA)
	PNEUMATIC		37CM900982 (NC)
	PILOT VALVE FOR		37CM900982 (NC)
	HEATING/COOLING		with
	SEQUENCE		37HS900008 (RA)
	PNEUMATIC		37HS900003
	WALL		37CM900972 (NO)
10	THERMOSTAT²²		with
10		37HS2	37HS900007 (DA)
			37CM900982 (NC)
			with
			37HS900008 (RA)
			37HS900003
			37CM900972 (NO)
			with
		37HS4	37HS900007 (DA)
			37CM900982 (NC)
			with
			37HS900008 (RA)
	SYSTEM POWERED	37HS1	37HS900003
	VARIABLE VOLUME	37HS1	37CM901012
	VARIABLE VOLUME		37HS900017
	COOLING		37HS900017
	COOLING		37HS900003
	WALL THERMOSTAT		37HS900003
	WALL THERMOSTAT	37HS2	37CM901012
		37HS2	37CM901012
	PNEUMATIC		37HS900017
	WARM-UP/FIRE		37HS900003
	SWITCH	37HS4	37CM901012
			37HS900017
11

	SYSTEM POWERED	37HS1	37HS900001
	VARIABLE VOLUME	37HS1	37HS900017
	VARIABLE VOLUME		37HS900017
	COOLING	37HS2	37HS900002
	DIFFUSER	37HS2	37HS900017
			37HS900017
			37HS900004
	THERMOSTAT	37HS4	37HS900004
	PNEUMATIC		37HS900017
	PNEUMATIC
	WARM-UP/FIRE
	SWITCH
12

LEGEND
DA Ð Direct Acting	NO Ð Normally Open
NC Ð Normally Closed	RA Ð Reverse Acting

²²For night set back heating, a ®eld-supplied dual set point DA ther- mostat must be substituted for thermostat packages shown. For VAV Moduline cooling/separate system heating, a ®eld-supplied dual set point DA/RA thermostat must be substituted for thermo- stat packages shown.

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Carrier specifications Ð 37HS Control Combinations cont

Contents

System-PoweredControls With 37HS Moduline Air TerminalsStep 1 Ð Determine Air Volume Cfm System-PoweredControls WithBUILDING LOAD CALCULATION Fig. 2 Ð 37HS Unit With VAV ControlsFig. 3 Ð Estimating Block Load Fig. 4 Ð Floor Plan of Typical Zonesfor Single-StoryOffice Building DESIGN PROCEDURE with example Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page ·Baseboard ·Overhead air Fig. 6 Ð 35BD Heating Slot Boot Diffuser Fig. 5 Ð Separate Duct Heating SystemPerformance Heating Ð Downblow Slot Fig. 7 Ð Director Diffuser TERMINAL SELECTION AND LAYOUT Table 1 Ð Optimum Outlet DischargeTable 2 Ð Location Guidelines Fig. 10 Ð Moduline Units in Air Series Fig. 9 Ð Single Moduline Unit Connected toSupply Duct Fig. 11 Ð Master Unit and Slave UnitsFig. 14 Ð Diffuser Locations for Step 2 Ð Lay Out TerminalsTable 3 Ð Recommended Maximum Cfm Per Terminal Preferred 2-Wayor One-WayBlow1-Wayand 2-WayBlow, 2-SlotDiffusers Fig. 16 Ð Locate Units to Prevent Down-DraftsTable 4 Ð Air Throw Data Ð Table 5 Ð Air Throw Data ÐStep 3 Ð Consider Unit Combinations And Run Fig. 17 Ð Staggered UnitsFig. 18 Ð Unit Spacing Fig. 19 Ð Run-OutDuct for Single Moduline Unit Table 6 Ð 37HS1 Units in Air Series Table 6 Ð 37HS1 Units in Air Series cont Table 7 Ð 37HS2 Units in Air Series Table 7 Ð 37HS2 Units in Air Series cont Table 8 Ð 37HS4 Units in Air SeriesTable 8 Ð 37HS4 Units in Air Series cont Table 9 Ð Maximum Cfm Through the Inlet Collar of a Single Unit or of Units in Air Series0.97+ 0.16 = 1.13 in. wg Controls and Standard Diffusers Master Unit Ð Units with System-PoweredTable 10 Ð Minimum Static Pressure at Control Fig. 23 Ð Three 37HS2 ModulineAir Series on One Controller Fig. 25 Ð Flexible Duct Used with 90-DegreeBendTable 13 Ð Maximum Number of Units in an Fig. 26 Ð Air Intake on Master UnitFig. 27 Ð Location of Volume Controller on Single UnitPage The corrected layout Fig. 30 Ð Corrected LayoutFig. 31 Ð Control Tubing Connection 1.Room A has its own controllerTHE MODULINE VALVE UNIT MODULATING Ð BELLOWS PARTIALLY INFLATED Fig. 32 Ð Bellows and Unit Air Valve ArrangementUNIT SHUTOFF Ð BELLOWS FULLY INFLATED UNIT FULL CAPACITY Ð BELLOWS DEFLATEDFig. 33 Ð Cross Section of 37HS Moduline Air Terminal Fig. 34 Ð Bellows ComparisonSystem-PoweredControls CONTROL APPLICATIONSFig. 35 Ð High and Low Pressure Pick-UpTubes Fig. 36 Ð 37HS Control Components Fig. 37 Ð Basic 37HS Control OperationFig. 41 Ð Wall-MountedThermostat Fig. 39 Ð 37HS Air¯ow Volume ControllerFig. 42 Ð Diffuser Baffle Assembly Fig. 38 Ð 37HS Control Filter/ManifoldFig. 44 Ð Variable Air Volume Control Arrangement Fig. 43 Ð Constant Volume Control ArrangementSystem-Powered Warm-Up Fig. 45 Ð VAV Control Arrangement forFig. 49 Ð VAV Control Arrangement Fig. 47 Ð Cooling/Heating Wall ThermostatFig. 48 Ð Wall-MountedHeating Thermostat for Electric Warm-UpElectric Heat Interlock Pneumatic Warm-UpSwitchFig. 51 Ð VAV Control Arrangement with Fig. 52 Ð Pilot Valve for Pneumatic SequencedCONTROL SELECTION Table 14 Ð Control IndexTable 15 Ð 37HS Control Combinations Table 15 Ð 37HS Control Combinations cont Table 15 Ð 37HS Control Combinations cont CONTROLTable 15 Ð 37HS Control Combinations cont CONTROLSystem-PoweredControls CONTROL OPERATING SEQUENCESFig. 55 Ð Variable Volume Controls Schematic Unit Supplying Air Controller Shut Off, Unit Shut Off Controller Bleeding, Unit Heating VAV HEATING AND COOLING WITH SYSTEM- POWERED CHANGEOVER Ð This application uses a CV control package along with a wall-mountedthermostat pack- age cooling/heating and a system-poweredchangeover con- trol package. The cooling thermostat is direct acting DA while the heating thermostat is reverse acting RA Fig. 62 Ð Heating/Cooling Unit Ð Cooling, Cold Air in Duct, Changeover in Cooling Fig. 64 Ð Heating/Cooling Unit Ð Cooling, Cold Air in Duct, Changeover in Cooling VAV HEATING Ð It is suggested that the following section be reviewed before reading this section: VAV Cooling, page System-PoweredControls with Electric Interface Controller Bleeding, Unit Heating VAV HEATING AND COOLING WITH ELECTRIC CHANGEOVER Ð This application uses a CV control pack- age along with a wall-mountedthermostat package cooling/ heating and an electric changeover package. The change- over valve permits control of the unit to be switched between the cooling and heating sides of a cooling/heating thermo- stat. It is eld-installed in-linebetween the volume control- ler and the thermostat Fig. 71 Ð Heating/Cooling Unit Ð Heating, Hot Air in Duct, Electric Changeover in Heating Fig. 74 Ð Connection for Electric Interlock Fig. 77 Ð Piping Diagram, Heating/Cooling Fig. 75 Ð Piping Diagram, Heating/CoolingFig. 76 Ð Sequence Diagram Ð DA Thermostat Fig. 78 Ð Sequence Diagram, RA ThermostatFig. 81 Ð Piping Diagram, NC Conguration Fig. 79 Ð Piping Diagram, NO CongurationWarm-UpSwitch LEGEND FOR FIG. 79 -AIRFLOW ADJUSTMENT CFM HK08ZZ030Table 17 Ð Multiple Unit Air¯ow Variation AIR DISTRIBUTION Fig. 86 Ð Typical Room Air Distribution Pattern 37HS Ð 2-WAYBLOW 37HS2 Ð ONE-WAYBLOWPage Table 18 Ð Standard Diffusers for 37HS1 Table 19 Ð Standard Diffusers for 37HS2 Table 20 Ð Standard Diffusers for 37HS4 Table 21 Ð Optional Diffusers for 37HS1 Table 22 Ð Optional Diffusers for 37HS2 Table 23 Ð Optional Diffusers for 37HS4 Table 25 Ð Air Throw Data Ð Table 24 Ð Air Throw Data Ð1-Wayand 2-WayBlow, 2-SlotDiffusers 2-Wayand 1-WayDirector, 3-SlotDiffusersPage Copyright 1991 Carrier Corporation