Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 37HS Ð Minimum Static Pressure at Control, Master Unit Ð Units with System-Powered

Models: 37HS

1 84

Download 84 pages 16.18 Kb

Page 36

Table 10 Ð Minimum Static Pressure at Control

Table 10 Ð Minimum Static Pressure at Control

(Master) Unit Ð Units with System-Powered

Controls and Standard Diffusers

		37HS1		37HS2		37HS4

			PLENUM SIZE (in.)
AIRFLOW			7 x 7	7 x 7		9 x 9
(Cfm)	5 x 7		9 x 9	9 x 9		11 x 11
			11 x 11	11 x 11		13 x 13
		Minimum Static Pressure (in. wg)

40
50	0.75		0.75	N/A		N/A
60	0.75		0.75	N/A		N/A
60
70

80
90	0.75		0.75	0.75		N/A
100
110	0.90		0.90	0.75		N/A
120	N/A		N/A	0.75		N/A
140	N/A		N/A	0.75		N/A
140
160
180	N/A		N/A	0.75		0.75
200
220	N/A		N/A	0.90		0.75
240
280
320	N/A		N/A	N/A		0.75
360
400
440	N/A		N/A	N/A		0.90

N/A Ð Not Applicable

NOTE: Maximum inlet pressure Ð 3.0 in. wg.

C Ð Controller

Fig. 23 Ð Three 37HS2 Moduline

Table 11 Ð Additional DP for

Extended Lengths of Flexible Duct

FLEX	TOTAL	ADDITIONAL
DUCT	CFM	DP PER
DIAM	IN AIR	10 FT FLEX DUCT
(in.)	SERIES	(in. wg)
6	400	0.2
8	800	0.16
10	1100	0.1
12	1600	0.07

Table 12 Ð Additional DP for

Flexible Duct with 90-Degree Bend

FLEX	TOTAL	RADIUS	ADDITIONAL DP
DUCT	CFM	OF	FOR 90° BEND
DIAM	IN AIR	BEND	IN FLEXIBLE DUCT
(in.)	SERIES	(in.)	(in. wg)
6	400	18	0.26
8	800	24	0.16
10	1100	30	0.08
12	1600	36	0.04

Units in Adjoining Modules

Fig. 24 Ð Four 37HS2 Moduline Units in Alternate Series Modules

36

Image 36

Carrier Ð Minimum Static Pressure at Control, Master Unit Ð Units with System-Powered, Ð Three 37HS2 Moduline

Contents

37HS Moduline Air Terminals Step 1 Ð Determine Air Volume CfmSystem-PoweredControls With 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. 9 Ð Single Moduline Unit Connected to Supply DuctFig. 10 Ð Moduline Units in Air Series Fig. 11 Ð Master Unit and Slave UnitsStep 2 Ð Lay Out Terminals Table 3 Ð Recommended Maximum Cfm Per TerminalFig. 14 Ð Diffuser Locations for Preferred 2-Wayor One-WayBlowFig. 16 Ð Locate Units to Prevent Down-Drafts Table 4 Ð Air Throw Data Ð1-Wayand 2-WayBlow, 2-SlotDiffusers 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 Master Unit Ð Units with System-Powered Table 10 Ð Minimum Static Pressure at ControlControls and Standard Diffusers Fig. 23 Ð Three 37HS2 ModulineFig. 25 Ð Flexible Duct Used with 90-DegreeBend Table 13 Ð Maximum Number of Units in anAir Series on One Controller Fig. 26 Ð Air Intake on Master UnitFig. 27 Ð Location of Volume Controller on Single UnitPage Fig. 30 Ð Corrected Layout Fig. 31 Ð Control Tubing ConnectionThe corrected layout 1.Room A has its own controllerTHE MODULINE VALVE Fig. 32 Ð Bellows and Unit Air Valve Arrangement UNIT SHUTOFF Ð BELLOWS FULLY INFLATEDUNIT MODULATING Ð BELLOWS PARTIALLY 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. 39 Ð 37HS Air¯ow Volume Controller Fig. 42 Ð Diffuser Baffle AssemblyFig. 41 Ð Wall-MountedThermostat Fig. 38 Ð 37HS Control Filter/ManifoldFig. 43 Ð Constant Volume Control Arrangement System-Powered Warm-UpFig. 44 Ð Variable Air Volume Control Arrangement Fig. 45 Ð VAV Control Arrangement forFig. 47 Ð Cooling/Heating Wall Thermostat Fig. 48 Ð Wall-MountedHeating ThermostatFig. 49 Ð VAV Control Arrangement for Electric Warm-UpPneumatic Warm-UpSwitch Fig. 51 Ð VAV Control Arrangement withElectric Heat Interlock 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. 75 Ð Piping Diagram, Heating/Cooling Fig. 76 Ð Sequence Diagram Ð DA ThermostatFig. 77 Ð Piping Diagram, Heating/Cooling Fig. 78 Ð Sequence Diagram, RA ThermostatFig. 79 Ð Piping Diagram, NO Conguration Warm-UpSwitchFig. 81 Ð Piping Diagram, NC Conguration 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 24 Ð Air Throw Data Ð 1-Wayand 2-WayBlow, 2-SlotDiffusersTable 25 Ð Air Throw Data Ð 2-Wayand 1-WayDirector, 3-SlotDiffusersPage Copyright 1991 Carrier Corporation