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Carrier 42S, 42C, 42D, 42V specifications Symbols and Placement of Valves

Models: 42V 42D 42S 42C

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Fig. 43 — Symbols and Placement of Valves

Coil Connections (Positions A & B) — When isolation valve only is added to supply or return line, the isolation valve will be factory brazed to the coil stub-out. Addition of any other component or connection to the supply or return line will change the respective coil connection(s).

Service Fittings (Positions C & D) — Optional fittings for attaching pressure/temperature sensing devices to obtain pres- sure drop or temperature differential across coil. Used with ball valve or balance valve where extremely accurate water flow balancing is required.

Water Flow Balancing (Positions E, F, & H) — Only one device per total valve package to be used for balancing water flow through the coil. When isolation valve (ball valve or ball valve with memory stop at position H) is used for water flow bal- ancing, do not specify additional balancing device at position E or F. When balancing device is specified at position E or F, isolation valve does not require balancing feature at position H (with a 3-way motorized valve, a bypass balancing valve may be specified in the bypass line to permit equal flow balancing).

Strainer (Position G) — Does not include blow down fitting and should not be used in lieu of main piping strainers.

Isolation Valves (Positions H & J) — Normally requires one each on supply and return line (see exception under circuit setter). When position H is used for balancing (ball valve or ball valve with memory stop), check specifications for service valve requirements.

Fig. 43 — Symbols and Placement of Valves

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Carrier 42S, 42C, 42D, 42V specifications Symbols and Placement of Valves

Contents

42C,D,S,V Series Fan Coil Air Conditioners Installation, Start-Upand Service InstructionsTable 2 — Physical Data — 42V Series Units Table 1 — Physical Data — 42C Series UnitsPRE-INSTALLATION Fig. 1 — 42CA Furred-InHorizontal Unit Dimensions UNIT a42-4101 A42-4102 A42-4103 A42-4104 A42-4105 Fig. 7 - 42CG Horizontal Cabinet Unit DimensionsLEGEND 1 — Junction Box, 4 in. x 4 in A42-4149 Front Supply, and Bottom Return Dimensionsa42-4150 a42-4151 Front Supply, and Rear Return Dimensionsa42-4152 Front Supply, Rear Return, and Heater DimensionsUNIT UNIT SIZE Fig. 15 — 42VA Furred-InVertical Unit Dimensions Fig. 16 - 42VB Vertical Cabinet Unit Dimensions LEGEND 1 — Standard Stamped Supply Grille Fig. 18 - 42VC Furred-InLowboy Unit Dimensions LEGEND 1 — Unit-MountedControl Box Optional Fig. 20 — 42VE Cabinet Lowboy Unit Dimensions LEGEND A42-4116 Fig. 22 — 42VG Furred-InWall Unit Dimensionsa42-4120 A42-4121 A42-4122 BlowerMotor A42-4123 BlowerMotor A42-4124 A42-4125 Fig. 28 — 42SG Furred-InStack DimensionsA42-4126 Fig. 29 — 42SH Cabinet DimensionsA42-4127 A42-4128 Fig. 31 - 42SGM Furred-InMaster Stack DimensionsA42-4129 Fig. 32 — 42SGS Furred-InSlave Stack Dimensionsa42-4154 a42-4155 a42-4169 a42-4167A42-4173 A42-4171A42-4168 PANEL AND FRAME DIMENSIONS inA42-4170 A42-4161INSTALLATION Step 1 — Place Units in Position Fig. 38 — 42SJ Unit as Shipped Fig. 39 — 42SJ Unit InstallationFig. 37 — 42SJ Unit with Standard and Siamese Risers7.Attach unit risers Fig. 41 — Pipe Connection Configurations Field Piping Connections Hydronic Coil Arrangement42VG a42-4177Fig. 43 — Symbols and Placement of Valves Fig. 44 — Two-WayMotorized Control Valve Package a42-4174a42-4175 COILCOIL a42-4176COIL COILCOIL COILCOIL COIL42D Unit Shown Fig. 48 - Typical Drain Line DetailsTable 5 — Piping Components Table 5 — Piping Components cont Table 5 - Piping Components cont SYMBOL/SKETCHTable 5 — Piping Components cont SYMBOL/SKETCHJOINT MATERIALS Fig. 50 — Manual Fan Control Fig. 51 — Thermostatic Fan Control 2-PipeSystem Remote/Wall-MountedThermostat Line Voltage a42-4060a42-4059 Unit-MountedDebonair Thermostat 24-v,Duct Sensora42-4061 Unit-MountedThermostat Line Voltage a42-4066THERMOSTAT PART # LIMIT SWITCHTHERMOSTAT #33CSSN2-FC VALVEThermostat 2-PipeTotal Electric Heat with Valve Con- trol— With this system, the complete heating requirement for the space is provided by the electric heater; the water system is never changed over for heating. It is therefore possible, just as with 4-pipesystems, to have heating or cooling at any time of the year a42-4067a42-4073 Unit-MountedThermostat Line VoltageRemote/Wall-MountedThermostat Line Voltage THERMOSTAT #33CSSN2-FC a42-4072Unit-MountedThermostat Line Voltage a42-4079a42-4078 Remote/Wall-MountedThermostat Line VoltageRemote/Wall-MountedDebonair Thermostat To Clean Coil SERVICEStep 7 — Make Final Preparations START-UPc.Reinstall fan deck if removed Page Catalog No. Copyright 2009 Carrier CorporationPrinted in U.S.A Form 42-3SII.Project Information INSPECTION, INSTALLATION, AND START-UPCHECKLISTFAN AND MOTOR