Carrier 42 SERIES User Manual - Free PDF Download

Page 2 - CONTENTS; Page

CONTENTS Page CONTROL SELECTION GUIDE . . . . . . . . . . . . . . . 3 STANDARD WIRING PACKAGES . . . . . . . . . . . . 4-8 Manual Fan Control . . . . . . . . . . . . . . . . . . . . . . . . . 4 Thermostatic Fan Control, 2-Pipe Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Thermos...

Page 3 - CONTROL SELECTION GUIDE

CONTROL SELECTION GUIDE Use this guide to make sure that all necessary components are provided for and that the components are compatible with the required control system.NOTE: When thermostatic fan control is selected or when unit outside air dampers are used, unit-mounted thermostatsare not recomm...

Page 5 - Thermostatic Electric Valve Control, 2-Pipe —

Thermostatic Fan Control, 2-Pipe System withSafety Cycle — This control is used for high humidity situations in which condensate problems can occur if fan isturned off while chilled water is still running through thecoil. The wiring provides fan cycling from HIGH to LOW on the cooling cycle and from...

Page 10 - This standard switch; Combination; stat less automatic changeover switch wired for cooling only.; Thermostat Electrical Data

REMOTE-MOUNTED CONTROLS Standard 3-Speed Switch — This standard switch has 4 positions: OFF, HIGH, MEDIUM, and LOW. Switchhas auxiliary contact that is energized when switch is in HIGH,MEDIUM or LOW position.Some of the options common with the 3-speed switch are:1. Unit-mounted switch on Furred-In V...

Page 11 - ALTERNATE WALL THERMOSTATS; Fan Switch; Temperature range is approximately 55 to 95 F in 10° F; Thermostat and Fan Switch Electrical Ratings; THERMOSTAT; THERMOSTAT

ALTERNATE WALL THERMOSTATS Wall Thermostat (Honeywell Model T4039) withManual 3-Speed Fan Switch and ON-OFF Switch Temperature range is approximately 55 to 95 F in 10° F increments from 75 F midpoint. Scale is marked warmer-cooler. Thermostat mounts in 4-in. square junction box or2-ganged outlet box...

Page 12 - UNIT-MOUNTED CONTROLS; Standard 3-Speed Switch —; COMBINATION THERMOSTAT AND TOGGLE SWITCH; Combination Thermostat/ON-OFF Toggle Switch; Package 24-L includes Model TF103 2-pipe thermostat

UNIT-MOUNTED CONTROLS OFF HI MED LO Standard 3-Speed Switch — Switch has OFF, HIGH, MED and LOW positions. Switch is also equipped with aux-iliary connection energized when switch is in HIGH, MEDor LOW position. COMBINATION THERMOSTAT AND TOGGLE SWITCH Combination Thermostat/ON-OFF Toggle Switch (Pa...

Page 13 - With this; Automatic Changeover; The set point temperatures are factory set. When water

Two-Pipe Thermostat, Model TF103 — This single- pole, double-throw (SPDT) thermostat has snap-action con-tacts. The standard temperature range is 60 - 90 F. Four-Pipe Thermostat, Model TH104 — With this thermostat, heating and cooling are sequenced (automaticchangeover) with 6 degree separation betw...

Page 14 - BASIC DEFINITIONS; Standard 2-pipe units will be the same end connection.; Piping determines the hand of the unit.; Valve Packages for 4-Pipe Systems - Select 2 valve packages per unit.

BASIC DEFINITIONS Unit Hand — When facing the supply air outlet from the front of the unit (air blow-ing in your face), your right hand will be the right hand side of the unit and your lefthand the left hand side of the unit. Same End Connection (2 Pipe or 4 Pipe) — All piping connections are on the...

Page 15 - supplied coil or arrangement of factory-supplied valves.

Hydronic Coil Arrangement FIELD PIPING CONNECTIONS* VERTICAL FLOOR UNITS — 42VB, VE, VFPipe into cabinet end compartment(opening in bottom and back). VERTICAL FLOOR UNITS — 42VA, VCPipe to external connections (no cabinet). CEILING UNITS (EXPOSED) — 42CG, CK,DE, DFPipe through knock-outs in rear of ...

Page 16 - Table 1 lists acceptable pneumatic valves for; Fig. 1 — Symbol And Placement Of Valves

VALVE PACKAGES General — Table 1 lists acceptable pneumatic valves for installation on 42 series fan coil units. There are limitationson physical size of pneumatic valves, quantity and type ofmatching components, required control interface. See Fig. 1for symbols and placement of valves. Consult fact...

Page 17 - PRESSURE TEST PORT: Pressure test only - In supply and return lines.

LEGEND For Fig. 1 Component Sizing — 1 ⁄ 2 9 nominal (for 5 ⁄ 8 9 OD copper tubing) or 3 ⁄ 4 9 nominal (for 7 ⁄ 8 9 OD copper tubing). Manual Air Vent — Standard component - Brazed into high point of hydronic cooling and/or heating coil circuit. Automatic Air Vent — Brazed into high point of coil ci...

Page 18 - Two-Way Motorized Control Valve

VALVE PACKAGES (cont) Two-Way Motorized Control Valve The 2-way motorized valve motor drives valve open and a spring returns valve to normally closed position(no water flow with unit OFF). Supply connection at coil will be swage fit for field braze (standard) or union (option). Return connection at ...

Page 20 - VALVE PACKAGE ARRANGEMENTS

Page 21 - LEGEND

LEGEND — Ball Valve — Ball Valve with Memory Stop — Gate Shut Off Valve — Balancing Valve — Circuit Setter — Motorized 2-Way Valve — Motorized 3-Way Valve * When aquastat is used for automatic changeover, bypass is re- quired as indicated by dashed line. NOTES:1. Packages factory furnished and insta...

Page 23 - Table 1 — Acceptable Field-Furnished Pneumatic Valves

Table 1 — Acceptable Field-Furnished Pneumatic Valves MANUFACTURER VALVE NUMBER TYPE MODE SIZE (in.) (OD Male Flare) CAPACITY (CV) RATING HONEYWELL VP517A 3-WAY MIXING 7 ⁄ 8 3.0, 4.0, 6.3 VP522A&B 3-WAY SEQUENCING 5 ⁄ 8 or 7 ⁄ 8 1.6/2.5 or 2.5/3.5/4.0 VP526A 3-WAY MIXING 5 ⁄ 8 1.6, 2.5 VP527A 2-...

Page 24 - PIPING COMPONENTS; YES

PIPING COMPONENTS SYMBOL/SKETCH DESCRIPTION CV FACTOR RATING STEAM USE 1 ⁄ 2 3 ⁄ 4 PSI F MANUAL AIR VENT: Threaded brassneedle valve with screwdriver slotfor adjustment. Application - Body brazed into highpoint of heating and cooling coils forbleeding air from coil. Standard itemon all hydronic coil...

Page 28 - CV FACTOR vs WATER PRESSURE DROP; P for 2.0 gpm through a component with a C

CV FACTOR vs WATER PRESSURE DROP CV FACTOR:The flow rate in gallons per minute (gpm) through a piping component when the pressure drop ( D P) in pounds per square inch (psi) across the component is 1.0 (psi). Pressure drop (ft-H 2 O) = 2.31 x psi (pressure drop) GRAPH EXAMPLE: D P for 2.0 gpm throug...

Page 30 - COPPER WATER TUBE AND JOINT MATERIAL PRESSURE RATINGS; JOINT MATERIALS

COPPER WATER TUBE AND JOINT MATERIAL PRESSURE RATINGS JOINT MATERIALS A 50-50 Lead-Tin at 200 F Note 1 D 95-5 Tin-Antimony at 200 F Note 2 B 50-50 Lead-Tin at 150 F E 95-5 Tin-Antimony at 150 F C 50-50 Lead-Tin at 100 F F 95-5 Tin-Antimony at 100 F 1. Not recommended for high system water pressures....

Page 32 - Table 2 — Standard Accessories and Options

Table 2 — Standard Accessories and Options STANDARD ACCESSORIES AND OPTIONS UNIT SERIES — 42 Ceiling — Horizontal Floor — Vertical Ducted — Horizontal Belt Drive Stack — Vertical CA CE CG CK CF VA VB VF VC VE VG DA DC DE DF DD BH SG SH SJ CABINET CHANGES Front Panel, 16 Gage • • Extended Cabinet whe...