Carrier 42 SERIES- Manuals

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...

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...

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...

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...

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...

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 ...

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...

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...

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 ...

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...

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-...

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...

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...

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....

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...

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...

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...

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...

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...

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...

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 ...

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...

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...

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 ...

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...

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-...

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...

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...

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....

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...