Carrier 42C Series Product Data

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Carrier 42C Series Product Data Manual pdf 110 page image

110I. Risers:1. Standard factory-furnished and installed risersshall be 104 in. long with 3-in. belled ends atthe top such that only one sweat connectionshall be required at each floor to join one riserto another.2. Risers shall be Type M copper insulated with1/2-in. thick synthetic rubber.3. Standard supply and return risers shall be1 1/4 in. diameter, drain riser shall be 1 in. diam-eter.J. Valves:The factory furnished and installed piping shallinclude two ball valves and one 2-way motorizedvalve. The ball valves shall be rated at 150 psig.K. Controls and Safeties:1. Controls:a. Standard controls for a 2-pipe system shallconsist of a 3-speed fan switch, heating/cooling thermostat (SPDT) and an automaticchangeover device.b. Unit controls shall be mounted behind theaccess door on the return air panel.2. Safeties:Unit fan motor shall be equipped with integralmotor protection.L. Operating Characteristics:1. A unit with a conventional coil, installed in a2-pipe system, shall be capable of providingheating or cooling as determined by the operat-ing mode of the central water supply system.2. A unit with a row-split coil, installed in a 4-pipesystem, shall be capable of providing sequencedheating and cooling.M. Electrical RequirementsStandard unit shall operate on 115-v, single phase,60-Hz electrical power supply.N. Motor:1. Fan motor shall be 3-speed, 115-v, singlephase, 60-Hz, permanent split capacitor type,factory mounted on the blower housing.2. Bearings shall be of the sleeve type with oiltubes and oversized oil reservoir to assurepositive lubrication and minimum servicerequirements.O. Special Features:Certain standard features are not applicable whenthe features designated by * are specified.* 1. Unit coil shall be equipped with automatic airvents.* 2. Unit shall be equipped with a 4-row coil forinstallation in a 2-pipe system.* 3. For installation in a 4-pipe system, unit shall beequipped with:a. A 3/1, 3/2 or 4/1 row-split coil, as shownon equipment drawings for cooling andheating.b. Two each 1 1/4 in. diameter supply andreturn risers and one 1 in. diameter drainriser.c. Two gate valves, 2 combination balance andstop valves and two 2-way motorized valves.The gate and combination valves shall berated at 150 psig.d. Three-speed fan switch and a sequencedheating and cooling thermostat.* 4. Unit shall be equipped with 3-way motorizedvalves.* 5. Supply and return risers shall be 1 in., 11/ 2 in.,2 in. or 2 1/2 in. diameter as shown on theequipment drawings.* 6. Floor-to-floor height of risers shall be as speci-fied on the equipment drawings.* 7. Supply and return risers shall be Type Lcopper.* 8. Drain riser shall be Type DWV copper.* 9. Insulation on risers shall be 3/4-in. thick syn-thetic rubber.*10. Unit shall be equipped with a separate reverse-return riser with size as shown on the equip-ment drawings.11. Automatic balancing check valve(s) shall befactory installed as shown on the equipmentdrawings.*12. Motor shall be 3-speed, single phase, 60 Hzpermanent split capacitor type for 208, 230 or277 volts or 50 Hz permanent split capacitortype for 220 volts.*13. Double-deflection supply grille(s) shall be fin-ished with white primer or Arctic White paint.Additional double-deflection supply grille(s) shallbe furnished for field installation.14. Ceiling skirts for exposed stack units shall beprovided for field trim and installation.15. A fresh-air opening shall be provided as shownon the equipment drawings.*16. One-in. thick cleanable filters shall be installedin the filter track.17. Unit shall be equipped with nichrome wire elec-tric strip heaters for total or auxiliary electricheat as specified on the equipment schedule.a. Heaters shall be protected by an automaticreset safety cutout switch and a fusible link.b. Heater capacity shall be as specified on theequipment schedule.c. Heaters shall be single phase, 60 Hz for120, 208, 240 or 277 volts as specified onthe equipment schedule.Guide specifications — 42S series (cont)