48P WEATHERMASTER®
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Product Data WEATHERMASTER® 48/50P2,P3,P4,P5030-100 Single-Package Gas Heating/Electric Cooling Rooftop Units and Electric Cooling Rooftop Units with Optional Electric Heat with ComfortLink Controls and PURON® Refrigerant (R-410A) 30 to 100 Nominal Tons Carrier’s 48/50P Series commercial packaged rooftops offer: • Puron® refrigerant (R-410A) • Novation® heat exchanger technology with microchannel coil • scroll compressors • digital scroll compressor option • constant volume (CV) • staged air volume (SAV™) • variable air volume (VAV) • vertical supply/return units • horizontal supply/return units • flexible chassis and plenum options • optional return fan/modulating power exhaust • optional high-capacity modulating power exhaust • staged gas control option for supply air tempering • optional modulating gas heat • hydronic heat option • high-capacity evaporator coil • optional airfoil fan • Humidi-MiZer® adaptive dehumidification option Features/Benefits Carrier’s 48/50P commercial packaged unit offers design flexibility, quality, reliability, interoperability and ComfortLink controls. ComfortLink controls Factory-installed ComfortLink controls provide the capability for free standing operation or may be linked with a more extensive system. Factory-installed and programmed BACnet* communication capability provides simple integration with the building HVAC system (e.g., terminal devices), an i-Vu® Open control system or a BACnet building automation system. Form 48/50P-7PD

Features/Benefits (cont) ComfortLink controls also have the capability to communicate with the Carrier Comfort Network® (CCN) system. This communication flexibility allows simple system integration as well as data collection, trending, monitoring and alarm displays. The 48/50P Series may also be configured to communicate via MODBUS† or LonWorks** protocols if required by the application. The ComfortLink controls can also interface directly with BACnet or CCN controls on 35 and 45 Series VAV terminals to form a system for optimal efficiency and tenant comfort. All units may also be applied...

applications. Microchannel coils are also sturdier than other coil types, making them easier to clean without causing damage to the coil. Due to the compact all aluminum design, microchannel coils reduce overall unit operating weight. The streamlined microchannel coil also reduces refrigerant charge by up to 40%. Microchannel coils are not recommended by Carrier for marine, coastal, or industrial environments unless a Carrier-approved coating is applied. Digital scroll compressor In air conditioning applications, the load may vary significantly, requiring a means to vary the system capacity...

Features/Benefits (cont) Design flexibility The P Series rooftop units with ComfortLink controls are designed to meet all customer requirements for new construction, replacement jobs, or special applications. The customer can choose from the following: • CV, SAV™ or VAV applications • digital scoll compressors • 4 or more supply-fan motor sizes • 2 sizes of natural gas heat (48 Series units) • electric heat (50 Series units) • hydronic heat (50 Series units) • Novation® microchannel (MCHX) condenser coils or e-coated MCHX condenser coils • integrated economizer with low-leak dampers,...

Run testing — To ensure a successful start-up, every rooftop unit is factory run tested. Unit design — Unit design is ETL and ETL, Canada, listed according to UL (Underwriters Laboratories) Standard 1995. Scrolling marquee — When using the standard scrolling marquee, serviceability becomes even easier, including: • local or remote alarm and alert monitoring • self-diagnostic run testing to confirm control and component operation • expedited troubleshooting and unit repair through self-diagnostic display of unit troubleshooting alert and alarm codes with expanded text descriptions to...

Model number nomenclature 48P2,P3,P4,P5 UNITS Option Code Factory Options See note below 48 – Cooling Unit with Gas Heat Configuration P2 – Vertical Suppy/Return, CV/SAV ComfortLink Controls P3 – Vertical Supply/Return, VAV ComfortLink Controls P4 – Horizontal Suppy/Return, CV/SAV ComfortLink Controls P5 – Horizontal Suppy/Return, VAV ComfortLink Controls Heat and Chassis Options – – Low Gas Heat, Humidi-MiZer® System A – High Gas Heat, Humidi-MiZer System B – Low Gas Heat, Stainless Steel C – High Gas Heat, Stainless Steel D – Low Gas Heat E – High Gas Heat F – Low Staged Gas Heat,...

Ratings and capacities UNIT DESIGN AIRFLOW LIMITS UNIT SIZE UNIT TYPE 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5 High Heat 50P2,P3,P4,P5 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5 High Heat 50P2,P3,P4,P5 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5 High Heat 50P2,P3,P4,P5 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5 High Heat 50P2,P3,P4,P5 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5 High Heat 50P2,P3,P4,P5 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5 High Heat 50P2,P3,P4,P5 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5 High Heat 50P2,P3,P4,P5 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5 High Heat 50P2,P3,P4,P5 48P2,P3,P4,P5 Low Heat 48P2,P3,P4,P5...

Ratings and capacities (cont) TWO-STAGE GAS HEATING CAPACITIES — 48P4,P5 UNITS (Natural Gas on All Units and LP Gas Not Available) UNIT 48P4,P5 030-050 Low Heat 030-050 High Heat 055-070 Low Heat 055-070 High Heat 075-100 Low Heat 075-100 High Heat 3. At altitudes above 2000 ft, the following formula may be used: LP — Liquid Propane NOTES: 1. Ratings are approved for altitudes to 2000 ft. At altitudes over 2000 ft, ratings are 4% less for each 1000 ft above sea level. 2. At altitudes up to 2000 ft, the following formula may be used to calculate air temperature rise: maximum output capacity...

GAS HEATING CAPACITIES — UNITS WITH STAGED GAS CONTROL OPTION (cont) 48P2,P3 055-070 LOW HEAT HEATING STAGES 1 2 3 4 5 % FULL FIRE THERMAL EFFICIENCY % OUTPUT CAPACITY PER SECTION (1000 Btuh) SECTION 1 % FULL FIRE THERMAL EFFICIENCY % OUTPUT CAPACITY PER SECTION (1000 Btuh) SECTION 1 % FULL FIRE THERMAL EFFICIENCY % OUTPUT CAPACITY PER SECTION (1000 Btuh) SECTION 1 % FULL FIRE THERMAL EFFICIENCY % OUTPUT CAPACITY PER SECTION (1000 Btuh) SECTION 1 % FULL FIRE THERMAL EFFICIENCY % OUTPUT CAPACITY PER SECTION (1000 Btuh) SECTION 1