Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 37HS Ð Heating/Cooling Unit Ð Cooling, Cold Air in Duct, Changeover in Cooling

Models: 37HS

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Fig. 62 Ð Heating/Cooling Unit Ð Cooling, Cold Air in Duct, Changeover in Cooling,

Fig. 62 Ð Heating/Cooling Unit Ð Cooling, Cold Air in Duct, Changeover in Cooling,

Thermostat Open, Controller Shut Off, Unit Shut Off

Fig. 63 Ð Heating/Cooling Unit Ð Heating, Hot Air in Duct, Changeover in Heating,

Thermostat Open, Controller Shut Off, Unit Shut Off

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Image 61

Carrier 37HS specifications Ð Heating/Cooling Unit Ð Cooling, Cold Air in Duct, Changeover in Cooling

Contents

Step 1 Ð Determine Air Volume Cfm 37HS Moduline Air TerminalsSystem-PoweredControls With System-PoweredControls WithFig. 2 Ð 37HS Unit With VAV Controls BUILDING LOAD CALCULATIONFig. 4 Ð Floor Plan of Typical Zones Fig. 3 Ð Estimating Block Loadfor 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. 5 Ð Separate Duct Heating System Fig. 6 Ð 35BD Heating Slot Boot DiffuserPerformance Heating Ð Downblow Slot Fig. 7 Ð Director Diffuser Table 1 Ð Optimum Outlet Discharge TERMINAL SELECTION AND LAYOUTTable 2 Ð Location Guidelines Supply Duct Fig. 9 Ð Single Moduline Unit Connected toFig. 10 Ð Moduline Units in Air Series Fig. 11 Ð Master Unit and Slave UnitsTable 3 Ð Recommended Maximum Cfm Per Terminal Step 2 Ð Lay Out TerminalsFig. 14 Ð Diffuser Locations for Preferred 2-Wayor One-WayBlowTable 4 Ð Air Throw Data Ð Fig. 16 Ð Locate Units to Prevent Down-Drafts1-Wayand 2-WayBlow, 2-SlotDiffusers Table 5 Ð Air Throw Data ÐFig. 17 Ð Staggered Units Step 3 Ð Consider Unit Combinations And RunFig. 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 8 Ð 37HS4 Units in Air Series Table 7 Ð 37HS2 Units in Air Series contTable 8 Ð 37HS4 Units in Air Series cont of a Single Unit or of Units in Air Series Table 9 Ð Maximum Cfm Through the Inlet Collar0.97+ 0.16 = 1.13 in. wg Table 10 Ð Minimum Static Pressure at Control Master Unit Ð Units with System-PoweredControls and Standard Diffusers Fig. 23 Ð Three 37HS2 ModulineTable 13 Ð Maximum Number of Units in an Fig. 25 Ð Flexible Duct Used with 90-DegreeBendAir Series on One Controller Fig. 26 Ð Air Intake on Master Uniton Single Unit Fig. 27 Ð Location of Volume ControllerPage Fig. 31 Ð Control Tubing Connection Fig. 30 Ð Corrected LayoutThe corrected layout 1.Room A has its own controllerTHE MODULINE VALVE UNIT SHUTOFF Ð BELLOWS FULLY INFLATED Fig. 32 Ð Bellows and Unit Air Valve ArrangementUNIT MODULATING Ð BELLOWS PARTIALLY INFLATED UNIT FULL CAPACITY Ð BELLOWS DEFLATEDAir Terminal Fig. 34 Ð Bellows Comparison Fig. 33 Ð Cross Section of 37HS ModulineCONTROL APPLICATIONS System-PoweredControlsFig. 35 Ð High and Low Pressure Pick-UpTubes Fig. 37 Ð Basic 37HS Control Operation Fig. 36 Ð 37HS Control ComponentsFig. 42 Ð Diffuser Baffle Assembly Fig. 39 Ð 37HS Air¯ow Volume ControllerFig. 41 Ð Wall-MountedThermostat Fig. 38 Ð 37HS Control Filter/ManifoldSystem-Powered Warm-Up Fig. 43 Ð Constant Volume Control ArrangementFig. 44 Ð Variable Air Volume Control Arrangement Fig. 45 Ð VAV Control Arrangement forFig. 48 Ð Wall-MountedHeating Thermostat Fig. 47 Ð Cooling/Heating Wall ThermostatFig. 49 Ð VAV Control Arrangement for Electric Warm-UpFig. 51 Ð VAV Control Arrangement with Pneumatic Warm-UpSwitchElectric Heat Interlock Fig. 52 Ð Pilot Valve for Pneumatic SequencedTable 14 Ð Control Index CONTROL SELECTIONTable 15 Ð 37HS Control Combinations Table 15 Ð 37HS Control Combinations cont CONTROL Table 15 Ð 37HS Control Combinations contCONTROL Table 15 Ð 37HS Control Combinations contCONTROL OPERATING SEQUENCES System-PoweredControlsFig. 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. 76 Ð Sequence Diagram Ð DA Thermostat Fig. 75 Ð Piping Diagram, Heating/CoolingFig. 77 Ð Piping Diagram, Heating/Cooling Fig. 78 Ð Sequence Diagram, RA ThermostatWarm-UpSwitch Fig. 79 Ð Piping Diagram, NO CongurationFig. 81 Ð Piping Diagram, NC Conguration LEGEND FOR FIG. 79 -AIRFLOW ADJUSTMENT HK08ZZ030 CFMTable 17 Ð Multiple Unit Air¯ow Variation AIR DISTRIBUTION 37HS Ð 2-WAYBLOW 37HS2 Ð ONE-WAYBLOW Fig. 86 Ð Typical Room Air Distribution PatternPage 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 1-Wayand 2-WayBlow, 2-SlotDiffusers Table 24 Ð Air Throw Data ÐTable 25 Ð Air Throw Data Ð 2-Wayand 1-WayDirector, 3-SlotDiffusersPage Copyright 1991 Carrier Corporation