Carrier 50SZ Series Product Data

Also see for 50SZ Series: Manual Installation, Start-Up and Service Instructions

Contents

5OPTIONS AND ACCESSORIESFactory--installed optionsLouvered grille provides hail and vandalism protection. A wiregrille is standard on all models. See model number nomenclature forlouvered grille options.Coil options include copper/copper and vinyl--coated constructionfor refrigerant coils. Units are shipped standard with copper tube/aluminum fin construction. See model number nomenclature forcoil options.Field--installed accessoriesEconomizer with Solid--State Controls and BarometricRelief DampersManual Air Damper (25% open)Electric HeatersFilter RackFlat Roof Curbs (8--in. and 14--in.)Square--to--Round Duct Transition KitThermostatsControls Upgrade KitCrankcase HeaterRigging KitLow Ambient Kit (Motormaster® II Control)Solid--State Time Guard® II DeviceCompressor Hard Start KitEconomizer with solid--state controls and barometric reliefdampers includes filter racks and provides outdoor air during cool-ing and reduces compressor operation.Manual outside air damper includes hood and filter rack with ad-justable damper blade for up to 25% outdoor air.Electric heaters provide additional heat in the unit when required.Each package has a heater module that slides into the controlscompartment. Heater sizes range from 5.0 to 20.0 kW. The electricheater design allows the use of a single--point power supply for theentire unit, resulting in lower installed costs.Flat roof curbs in both 8 in. and 14 in. sizes are available for roofmounted applications.Square--to--round duct transition kit enables 024--048 size unitsto be fitted to 14 in. round ductwork.Thermostats provide control for the system heating and coolingfunctions. Thermostat models are available in both programmableand non--programmable versions.Controls upgrade kit supplies high and low pressure safety protec-tion and protects the unit from operating in unsuitable conditions.Crankcase heater provides anti--floodback protection for low--load cooling applications.Rigging kit includes lifting brackets which are inserted into the unitbase rigging holds to lift unit for rooftop applications.Low--ambient kit (Motormaster II control) allows the use of me-chanical cooling down to outdoor temperatures as low as 0_F(--17.7_C).Filter rack features easy installation, serviceability, and high--fil-tering performance for vertical and horizontal applications.Compressor hard start kit gives a boost to the compressor motorat each start--up.ELECTRIC HEATERSODS CATALOGORDERING NO.NOMINALCAPACITY (kW) FUSES USED WITH SIZES024 030 036 042 048 060ELECTRIC HEATERS (208/230 — SINGLE PHASE — 60 Hz)CPHEATER052A00 5.0 0 X X X X XCPHEATER064A00 5.0 4 XCPHEATER070A00 7.2 4 X X X XCPHEATER050A00 10.0 4 X X X X X XCPHEATER066A00 15.0 6 X X X X XCPHEATER054A00 20.0 6 X X XELECTRIC HEATERS (208/230 — THREE PHASE — 60 Hz)CPHEATER055A00 5.0 0 X X X X XCPHEATER056A00 10.0 0 X X X XCPHEATER068A00 10.0 6 XCPHEATER057A00 15.0 0 XCPHEATER058A00 15.0 6 X X X XCPHEATER059A00 20.0 6 X X XELECTRIC HEATERS (460 — THREE PHASE — 60 Hz)CPHEATER060A00 5.0 0 X X X XCPHEATER061A00 10.0 0 X X X XCPHEATER062A00 15.0 0 X X X XCPHEATER063A00 20.0 0 X X XNOTE: Electric heaters are rated at 240v and 480v. Refer to Multiplication Factors table for other voltages.LEGENDODS⎯Order Distribution SystemMinimum Airflow for Reliable Electric Heater Operation (cfm)UNIT--50SZ 024 030 036 042 048 060AIRFLOW 800 1000 1200 1400 1600 200050SZ