Carrier SINGLE PACKAGE ROOFTOP UNITS ELECTRIC COOLING/GAS HEATING EW- Manuals

5 MODEL NUMBER NOMENCLATURE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 4 8 L C D 0 0 6 A 0 A 0 -- 0 A 0 A 0 ____ ____ ____ Unit Type Brand / Packaging 48 = Gas Heat Packaged 0 = Standard Rooftop 1 = LTL Electrical Options Model Series --- WeatherExpert A = None LC = Ultra High Efficiency B = HACR ...

7 FACTORY OPTIONS AND/OR ACCESSORIES Economizer (dry--bulb or enthalpy) Economizers save money. They bring in fresh, outside air for ventilation; and provide cool, outside air to cool your building. This is the preferred method of low--ambient cooling. When coupled to CO 2 sensors, economizers can p...

10 Table 5 – HEATING RATING TABLE -- LOW NO X 1 48LC GAS HEAT LOW NOx HEAT EXCHANGER TEMP RISE (DEG F) THERMAL EFFICIENCY (%) INPUT / OUTPUT STAGE 1 (MBH) INPUT / OUTPUT STAGE 2 (MBH) 04 LOW --- 60 / 47 20 --- 50 81% MED --- 90 / 72 30 --- 60 81% HIGH --- --- --- --- 05 LOW --- 60 / 47 20 --- 50 81%...

11 Table 8 – PHYSICAL DATA (COOLING) 3 -- 5 TONS 48LC*004 48LC*005 48LC*006 Refrigeration System # Stages/ # Comp. / Type 2 / 1 / Scroll 2 / 1 / Scroll 2 / 1 / Scroll R --- 410A charge A/B (lbs --- oz) 9 --- 2 9 --- 0 11 --- 0 Metering device TXV TXV TXV High --- press. Trip / Reset (psig) 630 / 505...

12 Table 9 – PHYSICAL DATA (HEATING) 3 -- 5 TONS 48LC**04 48LC**05 48LC**06 Gas Connection # of Gas Valves 1 1 1 Nat. gas supply line press (in. w.g.)/(PSIG) 4 --- 13 / 0.18 --- 0.47 4 --- 13 / 0.18 --- 0.47 4 --- 13 / 0.18 --- 0.47 Propane supply line press (in. w.g.)/(PSIG) 11 --- 13 / 0.40 --- 0....

13 CURBS & WEIGHTS DIMENSIONS C12128 Fig. 3 -- Dimensions 48LC 04--06 48L C

17 OPTIONS & ACCESSORY WEIGHTS OPTION / ACCESSORY OPTION / ACCESSORY WEIGHTS 04 05 06 lb kg lb kg lb kg Power Exhaust --- vertical 50 23 50 23 50 23 Power Exhaust --- horizontal 30 14 30 14 30 14 EconoMi$er (X or 2) 50 23 50 23 50 23 Medium Gas Heat 12 5 9 4 9 4 High Gas Heat --- --- 17 8 17 8 H...

18 APPLICATION DATA Min operating ambient temp (cooling): In mechanical cooling mode, your Carrier rooftop unit can safely operate down to an outdoor ambient temperature of 10 _ F (--12 _ C) and down to 0 _ F (--18 _ C) with ComfortLink controls. It is possible to provide cooling at lower outdoor am...

22 Table 12 – COOLING CAPACITIES -- FIRST STAGE PART LOAD 4 TONS 05 SIZE AMBIENT TEMPERATURE 85 95 105 115 125 EA (dB) EA (dB) EA (dB) EA (dB) EA (dB) 75 80 85 75 80 85 75 80 85 75 80 85 75 80 85 1000 Cfm EA (wB) 58 THC 32.0 32.0 36.3 30.5 30.5 34.6 28.8 28.8 32.7 26.9 26.9 30.6 24.8 24.8 28.3 SHC 2...

23 Table 13 – COOLING CAPACITIES -- SECOND STAGE FULL LOAD 4 TONS 05 SIZE AMBIENT TEMPERATURE 85 95 105 115 125 EA (dB) EA (dB) EA (dB) EA (dB) EA (dB) 75 80 85 75 80 85 75 80 85 75 80 85 75 80 85 1200 Cfm EA (wB) 58 THC 42.0 42.0 47.6 39.8 39.8 45.2 37.5 37.5 42.6 35.0 35.0 39.9 32.5 32.5 37.1 SHC ...

24 Table 14 – COOLING CAPACITIES -- FIRST STAGE PART LOAD 5 TONS 06 SIZE AMBIENT TEMPERATURE 85 95 105 115 125 EA (dB) EA (dB) EA (dB) EA (dB) EA (dB) 75 80 85 75 80 85 75 80 85 75 80 85 75 80 85 1250 Cfm EA (wB) 58 THC 40.1 40.1 45.4 38.0 38.0 43.1 35.7 35.7 40.6 33.1 33.1 37.8 30.3 30.3 34.7 SHC 3...

25 Table 15 – COOLING CAPACITIES -- SECOND STAGE FULL LOAD 5 TONS 06 SIZE AMBIENT TEMPERATURE 85 95 105 115 125 EA (dB) EA (dB) EA (dB) EA (dB) EA (dB) 75 80 85 75 80 85 75 80 85 75 80 85 75 80 85 1500 Cfm EA (wB) 58 THC 54.0 54.0 61.2 51.3 51.3 58.3 48.6 48.6 55.2 47.0 47.0 53.4 44.5 44.5 50.6 SHC ...

26 ECONOMIZER, BAROMETRIC RELIEF AND PE PERFORMANCE Vertical Application 0 500 1000 1500 2000 2500 0 0.05 0.1 0.15 0.2 0.25 0.3 RETURN DUCT STATIC PRESSURE (in.wg) 3 - 5 Ton RELIEF FLOW (CFM) Vertical Economizers C11539 Fig. 7 -- Barometric Relief Flow--Vertical 3 -- 5 Ton 0 1000 2000 3000 4000 5000...

27 GENERAL FAN PERFORMANCE NOTES: 1. Interpolation is permissible. Do not extrapolate.2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static pressure caused by any FIOPs or accessories. 3. Tabular data accounts for pressure loss due ...

28 FAN PERFORMANCE DIRECT DRIVE -- ECM (Multi--Speed) INDOOR FAN MOTOR Table 16 – 48LC*004 Vertical Unit--Direct Drive Speed (Torque) Tap CFM ESP BHP 1 750 0.27 0.15 900 0.07 0.11 1050 --- --- 1125 --- --- 1200 --- --- 1275 --- --- 1350 --- --- 1425 --- --- 1500 --- --- 2 750 0.54 0.21 900 0.29 0.18...

34 FAN PERFORMANCE (cont.) Table 28 – PULLEY ADJUSTMENT UNIT MOTOR/ DRIVE COMBO MOTOR PULLEY TURNS OPEN (RPM) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 04 Standard Static --- --- --- --- --- --- --- --- --- --- --- Medium Static 1175 1135 1094 1054 1013 973 932 892 851 811 770 High Static 1466 142...

35 ELECTRICAL INFORMATION Table 29 – 48LC*004 3 TONS UNIT V --- Ph --- Hz VOLTAGE RANGE COMP 1 OFM (ea) IFM MIN MAX RLA LRA WATTS FLA TYPE EFF at Full Load FLA 04 208 --- 3 --- 60 187 253 11.6 73 190 3.5 DD --- STD 84.0% 5.8 190 3.5 MED 81.5% 5.8 190 3.5 HIGH 80.0% 7.1 230 --- 3 --- 60 187 253 11.6 ...

37 MCA/MOCP (cont.) Table 33 – MCA/MOCP DETERMINATION WITH POWERED CONVENIENCE OUTLET 3 -- 5 TONS UNIT NOM. V --- Ph --- Hz IFM TYPE w/ PWRD C.O. NO P.E. w/ P.E. (pwrd fr/ unit) MCA MOCP DISC. SIZE MCA MOCP DISC. SIZE FLA LRA FLA LRA 04 208/ 230 --- 3 --- 60 DD --- STD 29.0 40 30 88 31.0 40 32 90 ME...

39 MCA/MOCP (cont.) Table 35 – MCA/MOCP DETERMINATION WITH POWERED CONVENIENCE OUTLET 3 -- 5 TONS UNIT NOM. V --- Ph --- Hz IFM TYPE w/ PWRD C.O. NO P.E. w/ P.E. (pwrd fr/ unit) MCA HACR BRKR DISC. SIZE MCA HACR BRKR DISC. SIZE FLA LRA FLA LRA 04 208/ 230 --- 3 --- 60 DD --- STD 29.0 40 30 88 31.0 4...

40 SEQUENCE OF OPERATION General The sequence below describes the sequence of operation for an electromechanical unit with and without a factory installed EconoMi$er X (called “economizer” in this sequence). Electromechanical units with no economizer Cooling When the thermostat calls for cooling, te...

41 SEQUENCE OF OPERATION (cont.) When the EconoMi$er X control is in the occupied mode and a call for cooling exists (Y1 on the thermostat), the control will first check for indoor fan operation. If the fan is not on, then cooling will not be activated. If the fan is on, then the control will open t...

42 SEQUENCE OF OPERATION (cont.) Max Comfort Dehumidification When the Dehumidification Control Type set to Maximum Comfort, the control will try to satisfy the demand while minimizing the cold air dump. The fan staging and compressor staging will operate similar to Maximum Dehumidification but the ...

43 GUIDE SPECIFICATIONS -- 48LC*004--06 Note about this specification: This specification is in the “Masterformat” as published by the Construction Specification Institute. Please feel free to copy this specification directly into your building spec. Gas Heat/Electric Cooling Packaged Rooftop HVAC G...

44 11. Economizer control (optional). 12. Control multi capacity stages13. Unit shall be complete with self--contained low voltage control circuit.14. Unit shall have 0 _ F low ambient cooling operation. 23 09 23.13.B. Safeties: 1. Unit shall incorporate a solid state compressor lockout that provide...

45 2. Low--pressure switch. a. Units with 2 compressors shall have different sized connectors for the circuit 1 and circuit 2 low and high pressure switches. They shall physically prevent the cross--wiring of the safety switches between circuits 1 and 2. b. Low pressure switch shall use different co...