System-PoweredControls With
37HS Moduline Air Terminals
Step 1 Ð Determine Air Volume Cfm
System-PoweredControls With
BUILDING LOAD CALCULATION
Fig. 2 Ð 37HS Unit With VAV Controls
Fig. 4 Ð Floor Plan of Typical Zones
Fig. 3 Ð Estimating Block Load
for Single-StoryOffice Building
DESIGN PROCEDURE with example
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·Baseboard ·Overhead air
Fig. 5 Ð Separate Duct Heating System
Fig. 6 Ð 35BD Heating Slot Boot Diffuser
Performance Heating Ð Downblow Slot
Fig. 7 Ð Director Diffuser
Table 1 Ð Optimum Outlet Discharge
TERMINAL SELECTION AND LAYOUT
Table 2 Ð Location Guidelines
Fig. 10 Ð Moduline Units in Air Series
Fig. 9 Ð Single Moduline Unit Connected to
Supply Duct
Fig. 11 Ð Master Unit and Slave Units
Fig. 14 Ð Diffuser Locations for
Step 2 Ð Lay Out Terminals
Table 3 Ð Recommended Maximum Cfm Per Terminal
Preferred 2-Wayor One-WayBlow
1-Wayand 2-WayBlow, 2-SlotDiffusers
Fig. 16 Ð Locate Units to Prevent Down-Drafts
Table 4 Ð Air Throw Data Ð
Table 5 Ð Air Throw Data Ð
Fig. 17 Ð Staggered Units
Step 3 Ð Consider Unit Combinations And Run
Fig. 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 Series
Table 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 Series
0.97+ 0.16 = 1.13 in. wg
Controls and Standard Diffusers
Master Unit Ð Units with System-Powered
Table 10 Ð Minimum Static Pressure at Control
Fig. 23 Ð Three 37HS2 Moduline
Air Series on One Controller
Fig. 25 Ð Flexible Duct Used with 90-DegreeBend
Table 13 Ð Maximum Number of Units in an
Fig. 26 Ð Air Intake on Master Unit
Fig. 27 Ð Location of Volume Controller
on Single Unit
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The corrected layout
Fig. 30 Ð Corrected Layout
Fig. 31 Ð Control Tubing Connection
1.Room A has its own controller
THE MODULINE VALVE
UNIT MODULATING Ð BELLOWS PARTIALLY INFLATED
Fig. 32 Ð Bellows and Unit Air Valve Arrangement
UNIT SHUTOFF Ð BELLOWS FULLY INFLATED
UNIT FULL CAPACITY Ð BELLOWS DEFLATED
Fig. 33 Ð Cross Section of 37HS Moduline
Air Terminal Fig. 34 Ð Bellows Comparison
CONTROL APPLICATIONS
System-PoweredControls
Fig. 35 Ð High and Low Pressure Pick-UpTubes
Fig. 36 Ð 37HS Control Components
Fig. 37 Ð Basic 37HS Control Operation
Fig. 41 Ð Wall-MountedThermostat
Fig. 39 Ð 37HS Air¯ow Volume Controller
Fig. 42 Ð Diffuser Baffle Assembly
Fig. 38 Ð 37HS Control Filter/Manifold
Fig. 44 Ð Variable Air Volume Control Arrangement
Fig. 43 Ð Constant Volume Control Arrangement
System-Powered Warm-Up
Fig. 45 Ð VAV Control Arrangement for
Fig. 49 Ð VAV Control Arrangement
Fig. 47 Ð Cooling/Heating Wall Thermostat
Fig. 48 Ð Wall-MountedHeating Thermostat
for Electric Warm-Up
Electric Heat Interlock
Pneumatic Warm-UpSwitch
Fig. 51 Ð VAV Control Arrangement with
Fig. 52 Ð Pilot Valve for Pneumatic Sequenced
CONTROL SELECTION
Table 14 Ð Control Index
Table 15 Ð 37HS Control Combinations
Table 15 Ð 37HS Control Combinations cont
Table 15 Ð 37HS Control Combinations cont
CONTROL
Table 15 Ð 37HS Control Combinations cont
CONTROL
System-PoweredControls
CONTROL OPERATING SEQUENCES
Fig. 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/Cooling
Fig. 76 Ð Sequence Diagram Ð DA Thermostat
Fig. 78 Ð Sequence Diagram, RA Thermostat
Fig. 81 Ð Piping Diagram, NC Conguration
Fig. 79 Ð Piping Diagram, NO Conguration
Warm-UpSwitch
LEGEND FOR FIG. 79 -
AIRFLOW ADJUSTMENT
HK08ZZ030
CFM
Table 17 Ð Multiple Unit Air¯ow Variation
AIR DISTRIBUTION
Fig. 86 Ð Typical Room Air Distribution Pattern
37HS Ð 2-WAYBLOW 37HS2 Ð ONE-WAYBLOW
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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 Ð
1-Wayand 2-WayBlow, 2-SlotDiffusers
2-Wayand 1-WayDirector, 3-SlotDiffusers
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Copyright 1991 Carrier Corporation
