B08_ATTACHMENT_A_SOW.pdf

Statement of Work

HVAC Installation Headquarters Building - Lake Mead National Recreation Area, NV

The Lake Mead Recreation Area Headquarters building, located at 601 Nevada Way Boulder City, NV

89005, seeks the replacement of a 15-ton packaged HVAC unit. The unit is near the end of its functional life and needs to be replaced. The unit is located on the roof of the building. Daytime operations during open hours of the Headquarters building are allowed. Site visits for scoping purposes are allowed but must be scheduled.

Due to the size of the unit and its location, it is anticipated that the installation will require the use of a crane. Contractor shall provide all materials, manpower, tools, and equipment to deliver and install the

HVAC unit.

Replacement unit shall be compatible with existing thermostat, controls system, and vent dampener control system. The installer shall ensure that the replacement unit is the same footprint as the existing unit. The installer shall ensure that the replacement unit is compatible with existing ductwork. The installer shall ensure a watertight seal between the unit and the roof to prevent leaks.

Replacement of Packaged Heat Pump:

Replace existing Carrier Packaged Heat Pump with Carrier or approved equal. Existing unit is a

Carrier WeatherMaker® Single Package Heat Pump Rooftop Unit Model No.

50TCQD17A2A5A6W0G0. The unit is a 15-ton unit operating on 208/230 volt, 3 phase power.

The unit includes a field installed electric heating kit with 50KW of nominal heating Model No.

CRHEATER280A0. The footprint of the unit measures approximately 127.875 inches long by

86.375 inches wide. The unit is set up for horizontal ducting as depicted in Appendix A. See

Appendix A for model tag and additional photos of the duct configuration. See Appendix B for

Manufactures Product data Sheet.

Contractor is responsible for directly superintending the project, onsite, all days in which work is being done. Contractor shall verify all details of the current HVAC unit prior to ordering the replacement unit. All specifications are approximate, and accuracy is not guaranteed by the government.

Unit installation shall include the following:

1. Connection to existing thermostat and dampener control system

2. Provide a watertight seal between the unit and the roof to prevent leaks.

3. Start up and test the system.

4. Balance the registers and dampeners post install

5. Disposal and removal of the old equipment outside of the Park Property IAW all local state and federal codes

6. All necessary permits from local jurisdiction.

7. Warranty workmanship for 1 year.

8. Provide a manufacturer’s warranty for the installed HVAC unit.

HVAC Unit Location

601 Nevada Way

Boulder City, NV 89005

1. Quote Package

a. The Contractor shall provide the following in the quote package.

i. PRICE SCHEDULE (lump sum). This is an evaluation factor.

ii. PRODUCT SUBMITTAL(s) of proposed brand and model of equipment. Include manufacturer and installer warranty information. This is a pass/fail

Requirement, not an evaluation factor.

iii. TECHNICAL: Provide a MAXIMUM 1 PAGE (12-point font) project narrative that demonstrates how the Prime Contractor will successfully meet the needs of the statement of work. Narrative shall include draft project schedule and describe how the Prime contractor plans to directly superintend the work during the performance of the contract until the work is completed and accepted. Project completion shall be No Later than 12/30/2024. This is an evaluation factor.

iv. KEY PERSONNEL: Please provide qualification of the onsite superintendent.

Superintendent shall demonstrate experience managing quality control, safety and scheduling in accordance with the statement of work. Superintendent shall demonstrate they have the authority to direct subcontractors on the behalf of the prime contractor and can make real time changes if there is a non-conformance issue. If the prime contractor is subcontracting the HVAC work, the technical approach shall demonstrate adherence to the SOW requirements

HVAC LOCATION

for an onsite superintendent to manage the work directly at the park location noted in the SOW. This is an evaluation factor.

Please provide a copy of the HVAC license of the Prime or Subcontractor. This is a pass/fail requirement, not an evaluation factor.

2. Contractor Use of Premises

a. The Contractor Shall always adhere to the following while working within Lake Mead

National Recreation Area.

i. The Contractor shall be identifiable with uniforms, name tags, marked vehicles, high-visibility vests, hats, or hardhats with company logo, or similar, and maintain a professional decorum and appearance.

ii. The contractor shall furnish a list of personnel with phone contact information.

iii. Do not drive vehicles off road or access non-project areas without permission from the contracting officer’s representative.

iv. Ensure all personnel (contractors, subcontractors, and vendors) entering or working in the park are familiar with and obey all park regulations. Law enforcement rangers will intervene if they perceive any unsafe or unlawful activity.

v. Working hours shall be 06:00-17:30 Monday through Friday, excluding

Government holidays. Work outside regular hours requires approval from the contracting officer and the Park’s Chief Ranger (or their designee). Requests for work outside of regular hours must be submitted not-less-than two working days in advance.

vi. Contractor shall not enter the facility without an NPS escort.

vii. Smoking is prohibited inside or outside within 25 feet of any buildings in the park. This applies to existing buildings, buildings under construction, and buildings under renovation. Discarding of tobacco products or debris anywhere other than into designated tobacco receptacles is considered littering and subject to fines.

viii. Confine storage of equipment and materials to the staging / lay-down/ storage areas identified by the COR or as established at the preconstruction meeting.

ix. The contractor shall park vehicles and heavy equipment in designated areas for contractor use or as established at the preconstruction meeting.

x. The Contractor shall keep driveways and entrances serving the premises clear and available to the Government, government employees, tenants, the public, and emergency vehicles always.

xi. Prevent damage to natural surroundings. Restore damaged areas and replace damaged trees, vegetation, and grass at no expense to the Government.

3. Period of Performance

a. All tasks and deliverables shall be completed by 12/30/2024.

4. Compliance

a. While performing work, the Contractor shall comply with all laws, regulations, and policies, to include, but not be limited to, the latest applicable versions of the following.

i. NFPA 101

ii. MUTCD Standards and Policies

iii. Occupational Safety and Health Administration (OSHA) Regulations

iv. National Electric Code and corresponding Nevada code.

v. Any restriction or requirement from Local jurisdiction(s).

b. Additional Requirements

i. Licensure: All work shall be performed by workers who hold appropriate licenses in one of the 50 States, the District of Columbia, Puerto Rico, or other

US territory. Where allowed by the state issuing the license, work may be conducted by unlicensed workers provided the work is overseen by a licensed worker. The business must be a licensed HVAC Contractor.

ii. All affected areas must be left in a clean and tidy condition. Any damages to

Government property will be fixed and repaired at no cost to the Government.

iii. All new equipment, supplies, and products must conform to the manufacturer’s instructions and guidelines.

iv. Contractor shall provide one-year labor warranty.

v. Contractor shall respond to warranty service calls within 3 calendar days.

5. ASBESTOS AND HAZARDOUS MATERIALS

a. A good-faith survey of asbestos is provided as part of the contract documents.

b. The Contractor shall conduct all work that impacts asbestos or hazardous materials, including lead-based or lead-containing paint and animal droppings or carcasses according to applicable laws, regulations, and policies, and by adhering to industry best practices.

c. Impacts to known asbestos containing material, known hazardous materials, or materials reasonably expected to contain hazardous materials or animal waste shall be conducted at no additional cost to the Government.

d. Asbestos or hazardous materials not reasonably expected to be encountered will be treated as a differing site condition.

fdaniels Image fdaniels Image fdaniels Image fdaniels Text Box Appendix A: Photos

© 2021 Carrier Form 50TCQ-17-24-04PD Rev A

Product Data

WeatherMaker®

Single Package Rooftop Heat Pump Units 15 and 20 Nominal Tons

50TCQ 17 and 24 with Puron® (R-410A) Refrigerant

Unit shown with economizer and power exhaust.

Carrier’s WeatherMaker® 15 to 20 Ton rooftop unit (RTU) was designed by customers for customers. With a newly designed cabinet that integrates “no-strip” screw collars, handled access panels, and more, we’ve made your unit easy to install, easy to maintain, easy to use and reliable.

Easy to install These WeatherMaker units are designed for dedicated factory-supplied vertical or horizontal air flow duct configurations.

Designed to fit on pre-installed curbs by another manufacturer, these units also fit on past designed Carrier installed curbs with a new certified and authorized adapter curb. No special field kits are required. This cabinet design also inte-grates a large control box that gives you room to work and room to mount Carrier accessory controls.

Easy to maintain Easy access handles by Carrier provide quick and easy access to all major nor-mally serviced components. Our “no-strip” screw system has superior hold-ing power and guides screws into posi-tion while preventing the screw from stripping the unit’s metal. Take accu-rate pressure readings by reading con-denser pressure with panels in place as compressors are strategically located to eliminate any air bypass.

Easy to use The central terminal board puts all your connections and troubleshooting points in one convenient place, standard. Most low voltage connections are made to the same board and make it easy to find what you’re looking for and easy to access it.

Reliable Each unit comes with precision sized and tested scroll compressor that is internally protected from over temperature and pressures. Each refrigerant circuit is fur-ther protected with a high pressure, loss of charge, and freeze protection switch.

In addition, a liquid line filter drier and suction line accumulator protects each circuit. Each unit is factory tested prior to shipment to help ensure unit operation once properly installed.

Key features

• Two-stage cooling capability with independent circuits and control.

• EERs up to 10.6.

• IEERs up to 11.5 with single speed indoor fan motor and up to 12.0 with 2-speed/VFD indoor fan motor.

• COPs up to 3.3.

• Dedicated vertical and horizontal air flow duct configuration models. No field kits required.

• Utility connections through the side or bottom. Bottom connections are also in an enclosed environment to help prevent water entry. Field sup-plied couplings are required.

• Standardized components and con-trol box layout. Standardized compo-nents and controls make service and stocking parts easier.

• Scroll compressors on all units with crankcase heaters. This makes ser-vice, stocking parts, replacement, and troubleshooting easier.

• Precision sized thermostatic expan-sion valve (TXV) metering device on each refrigerant circuit.

• Four-way reversing valve rapidly changes the flow of refrigerant to quickly changeover from cooling to heating, heating to cooling, and defrost.

• Easy-adjust, belt-drive motor available.

Carrier provides a factory solution for most points in the fan performance table. Motor assembly also contains a fan belt break protection system on all models and reliable pillow block bearing system that allows lubrication through the front of the unit.

• Capable of thru-the-base or thru-the-curb electrical routing.

• Full range of electric heaters and sin-gle-point electric kits pre-engineered and approved for field installation.

• Single-point electrical connection.

• Sloped, composite drain pan sheds water and won’t rust.

• Dependable time / temperature defrost logic provides a defrost cycle, if needed, every 30, 60, 90, or 120 minutes and is adjustable.

• Clean, large, easy to use control box.

• Color-coded wiring.

• Large, laminated wiring and power wiring drawings which are affixed to unit make troubleshooting easy.

• Single, central terminal board for test and wiring connections.

• Fast-access, handled, panels for easy access on normally accessed service panels.

• “No-strip” screw system guides screws into the panel and captures them tightly without stripping the screw, the panel, or the unit.

• Standard mechanical cooling opera-tion from 115°F (46°C) to 30°F (–1°C) ambient temperatures. Low ambient controls are available for cooling operation below 30°F (–1°C).

• 2-in. (51 mm) disposable filters on all units, with 4-in. (102 mm) filter track field-installed.

• Refrigerant filter-drier and suction line accumulator on each circuit.

• High pressure switch, loss of charge switch and freeze protection adds greater unit reliability.

• Many factory-installed options rang-ing from air management economiz-ers, 2-position dampers, manual outdoor air dampers, plus conve-nience outlets, disconnect switch and smoke detectors.

• Standard Parts Warranty: 5 year com-pressor parts, 5 year electric heater parts, 1 year others.

• Staged air volume (SAV™) system uti-lizes a Variable Frequency Drive (VFD) to automatically adjust the indoor fan motor speed between cooling stages.

Available on 2-stage cooling models with electro-mechanical controls or RTU Open controller. Note that SAV is required on all units for installation in the United States as per Depart-ment of Energy (DOE) efficiency stan-dard of 2018.

Features/Benefits

Table of contents Features/Benefits Model Number Nomenclature Capacity Ratings Physical Data Options and Accessories Dimensions Performance Data Fan Data Electrical Data Typical Wiring Diagrams Application Data Sequence of Operation Guide Specifications

50TCQ UNITS MODEL NUMBER NOMENCLATURE (EXAMPLE)

5 0 T C Q D 2 4 A 1 A 6 - 0 A 0 A 0

Cooling Tons 17 - 15 ton 24 - 20 ton

Example:

Position: 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Heat Options Q = Heat Pump

Sensor Options A = None B = RA Smoke Detector C = SA Smoke Detector D = RA + SA Smoke Detector

E = CO2

F = RA Smoke Detector and CO2

G = SA Smoke Detector and CO2

H = RA + SA Smoke Detector and CO2

J = Condensate Overflow Switch (electromech. controls only) K = Condensate Overflow Switch and RA Smoke Detector L = Condensate Overflow Switch and RA + SA Smoke Detector

Indoor Fan Options 1 = Standard Static Option, Vertical 2 = Medium Static Option, Vertical 3 = High Static Option,Vertical B = Medium Static, High Efficiency Motor, Vertical C = High Static, High Efficiency Motor, Vertical

5 = Standard Static Option, Horizontal* 6 = Medium Static Option, Horizontal 7 = High Static Option, Horizontal F = Medium Static, High Efficiency Motor, Horizontal G = High Static, High Efficiency Motor, Horizontal

Coil Options (Outdoor – Indoor – Hail Guard) A = Al/Cu – Al/Cu B = Precoat Al/Cu – Al/Cu C = E-coat Al/Cu – Al/Cu D = E-coat Al/Cu – E-coat Al/Cu E = Cu/Cu – Al/Cu F = Cu/Cu – Cu/Cu M = Al/Cu – Al/Cu – Louvered Hail Guard N = Precoat Al/Cu – Al/Cu – Louvered Hail Guard P = E-coat Al/Cu – Al/Cu – Louvered Hail Guard Q = E-coat Al/Cu – E-coat Al/Cu – Louvered Hail Guard R = Cu/Cu – Al/Cu – Louvered Hail Guard S = Cu/Cu – Cu/Cu – Louvered Hail Guard

Voltage 1 = 575/3/60 5 = 208-230/3/60 6 = 460/3/60

Design Revision

- = Factory Assigned

Base Unit Controls 0 = Base Electromechanical Controls (can be used with W7212 EconoMi$er IV [Non-Fault Detection and Diagnostic]) 1 = PremierLink™ Controller 2 = RTU Open Multi-Protocol Controller 6 = Electromechanical with 2-Speed Fan and W7220 Economizer Controller (can be used with W7220 EconoMi$er X [with Fault Detection and Diagnostic])

Intake / Exhaust Options A = None B = Temperature Economizer w/ Barometric Relief F = Enthalpy Economizer w/ Barometric Relief K = 2-Position Damper U = Temperature Ultra Low Leak Economizer w/ Barometric Relief V = Temperature Ultra Low Leak Economizer w/ PE (cent) - Vertical Air Only W = Enthalpy Ultra Low Leak Economizer w/ Barometric Relief X = Enthalpy Ultra Low Leak Economizer w/ PE (cent) - Vertical Air Only

Service Options 0 = None 1 = Unpowered Convenience Outlet 2 = Powered Convenience Outlet 3 = Hinged Panels 4 = Hinged Panels and Unpowered Convenience Outlet 5 = Hinged Panels and Powered Convenience Outlet

Packing 0 = Standard

Electrical Options A = None C = Non-Fused Disconnect G = 2-Speed Indoor Fan (VFD) Controller Standard USA models - (SAV) included J = 2-Speed Fan Controller (VFD) and Non-Fused Disconnect

Refrig. Systems Options D = Two stage cooling models

Model Series - WeatherMaker®

TC - Standard Efficiency

Unit Heat Type 50 - Electric Heat Packaged Rooftop

* Not available on horizontal 50TCQ 24 units.

Model number nomenclature

LEGEND * AHRI rated cfm is 6500 for vertical and 6000 for horizontal.

NOTES:

1. Rated and certified under AHRI Standard 340/360, as appropriate.

2. Ratings are based on:

Cooling Standard: 80°F (27°C) db, 67°F (19°C) wb indoor air temp and 95°F db outdoor air temp.

IEER Standard: A measure that expresses cooling part load EER efficiency for commercial unitary air conditioning and heat pump equipment on the basis of weighted operation at various load capacities.

3. All 50TCQ units meet the DOE-2018 (Department of Energy), ASHRAE 90.1-2016 and IECC-2015 minimum efficiency require-ments when equipped with the SAV™ (staged air volume) option.

LEGEND

NOTES:

1. Outdoor sound data is measured in accordance with AHRI stan-dard 370.

2. Measurements are expressed in terms of sound power. Do not compare these values to sound pressure values because sound pressure depends on specific environmental factors which nor-mally do not match individual applications. Sound power values are independent of the environment and therefore more accurate.

3. A-weighted sound ratings filter out very high and very low frequen-cies, to better approximate the response of the “average” human ear. A-weighted measurements for Carrier units are taken in accordance with AHRI standard 370.

AHRI COOLING RATINGS — 2-STAGE COOLING

COOLING MODE

50TCQ COOLING

STAGES

NOM.

CAPACITY

(TONS)

NET COOLING

CAPACITY

(Btuh)

TOTAL

POWER

(kW)

EER

IEER WITH

SINGLE SPEED

INDOOR MOTOR

IEER WITH

2-SPEED

INDOOR

MOTOR

D17 2 15 172,000 16.2 10.6 11.5 12.0 D24* 2 20 232,000 21.9 10.6 11.1 12.0

HEATING MODE

50TCQ

HEATING, LOW (Btuh) HEATING, HIGH (Btuh)

CAPACITY (Btuh) COP CAPACITY (Btuh) COP D17 103,000 2.4 166,000 3.3 D24* 136,000 2.3 220,000 3.2

AHRI — Air-Conditioning, Heating and Refrigeration Institute

ASHRAE — American Society of Heating, Refrigerating and Air-Con-ditioning Engineers

COP — Coefficient of Performance EER — Energy Efficiency Ratio IECC — International Energy Conservation Code IEER — Integrated Energy Efficiency

SOUND PERFORMANCE

50TCQ

MODEL

SIZE

COOLING

STAGES

OUTDOOR SOUND (dB) AT 60 Hz

A-Wgt AHRI 370 Rating 63 125 250 500 1000 2000 4000 8000

17 2 84.1 84 92.2 83.9 80.4 81.8 78.7 76.5 72.2 65.4 24 2 86.5 87 95.6 87.5 84.2 84.2 81.7 77.9 73.2 66.3 dB — Decibel

Capacity ratings

PHYSICAL DATA (COOLING), 15 AND 20 TONS — ROUND TUBE/PLATE FIN (RTPF) COIL DESIGN

50TCQD17 50TCQD24

REFRIGERATION SYSTEM

# Circuits / # Comp. / Type 2 / 2 / Scroll 2 / 2 Scroll R-410A charge A/B (lbs) 16.0 / 16.5 23.4 / 23.4

Metering device TXV TXV High-press. Trip / Reset (psig) 630 / 505 630 / 505 Low-press. Trip / Reset (psig) 24 / 45 24 / 45

EVAP. COIL

Material Cu / Al Cu / Al

Tube Diameter 3/8-in. 3/8-in.

Rows / FPI 3 / 15 4 / 15

Total face area (ft2) 19.56 22 Condensate drain conn. size 3/4-in. 3/4-in.

EVAP. FAN AND MOTOR — VERTICAL

STANDARD

STATIC

Motor Qty. / Drive Type 1 / Belt 1 / Belt Max BHP 2.9 4.9

RPM range 514-680 690-863 Motor frame size 56 56 Fan Qty. / Type 2 / Centrifugal 2 / Centrifugal

Fan Diameter (in.) 15 X 15 15 X 15

MEDIUM STATIC

Motor Qty. / Drive Type 1 / Belt — Max BHP 3.7 —

RPM range 679-863 — Motor frame size 56 —

Fan Qty / Type 2 / Centrifugal — Fan Diameter (in.) 15 X 15 —

HIGH STATIC

Motor Qty. / Drive Type 1 / Belt — Max BHP 4.9 —

RPM range 826-1029 — Motor frame size 56 — Fan Qty. / Type 2 / Centrifugal —

Fan Diameter (in.) 15 x 15 —

MEDIUM STATIC

- HIGH EFF.

Motor Qty / Drive Type — 1 / Belt Max BHP — 6.5 / 6.9 / 7.0 / 8.3

RPM range — 835-1021 Motor frame size — 184T Fan Qty. / Type — 2 / Centrifugal

Fan Diameter (in.) — 15 x 15

HIGH STATIC

- HIGH EFF.

Motor Qty. / Drive Type — 1 / Belt Max BHP — 10.5 / 11.9 / 11.9 / 11.0

RPM range — 941-1176 Motor frame size — 213T Fan Qty. / Type — 2 / Centrifugal

Fan Diameter (in.) — 15 x 15

Physical data

PHYSICAL DATA (COOLING), 15 AND 20 TONS — ROUND TUBE/PLATE FIN (RTPF) COIL DESIGN (cont)

50TCQD17 50TCQD24

EVAP. FAN AND MOTOR — HORIZONTAL

STANDARD

STATIC

Motor Qty. / Drive Type 1 / Belt — Max BHP 3.7 —

RPM range 514-680 — Motor frame size 56 — Fan Qty. / Type 2 / Centrifugal —

Fan Diameter (in.) 18 x 15 / 15 x 11 —

MEDIUM STATIC

Motor Qty / Drive Type 1 / Belt — Max BHP 3.7 —

RPM range 614-780 — Motor frame size 56 — Fan Qty. / Type 2 / Centrifugal —

Fan Diameter (in.) 18 x 15 / 15 x 11 —

HIGH STATIC

Motor Qty. / Drive Type 1 / Belt — Max BHP 4.9 —

RPM range 746-912 — Motor frame size 56 — Fan Qty. / Type 2 / Centrifugal —

Fan Diameter (in.) 18 x 15 / 15 x 11 —

STANDARD

STATIC

- HIGH EFF.

Motor Qty. / Drive Type — 1 / Belt Max BHP — 6.5 / 6.9 / 7.0 / 8.3

RPM range — 690-863 Motor frame size — 184T Fan Qty. / Type — 2 / Centrifugal

Fan Diameter (in.) — 18 x 15 / 15 x 11

MEDIUM STATIC

- HIGH EFF.

Motor Qty. / Drive Type — 1 / Belt Max BHP — 6.5 / 6.9 / 7.0 / 8.3

RPM range — 835-1021 Motor frame size — 184T Fan Qty. / Type — 2 / Centrifugal

Fan Diameter (in.) — 18 x 15 / 15 x 11

HIGH STATIC

- HIGH EFF.

Motor Qty. / Drive Type — 1 / Belt Max BHP — 10.5 / 11.9 / 11.9 / 11.0

RPM range — 941-1176 Motor frame size — 213T Fan Qty. / Type — 2 / Centrifugal

Fan Diameter (in.) — 18 x 15 / 15 x 11

CONDENSER COIL (CIRCUIT A)

Coil Type RTPF RTPF Coil Length (in) 70 82 Coil Height (in) 44 44

Rows / FPI 2 Rows / 18 FPI 2 Rows / 18 FPI Total face area (ft2) 21.4 25.1

CONDENSER COIL (CIRCUIT B)

Coil Type RTPF RTPF

Coil Length (in) 70 82 Coil Height (in) 44 44

Rows / FPI 2 Rows / 17 FPI 2 Rows / 17 FPI Total face area (ft2) 21.4 25.1

CONDENSER FAN / MOTOR

Qty. / Motor Drive Type 3 / direct 4 / direct

Motor HP / RPM 1/4 / 1100 1/4 1100 Fan Diameter (in.) 22 22

FILTERS

RA Filter # / size (in.) 6 / 20 x 25 x 2 6 / 20 x 25 x 2

OQ Inlet Screen # / size (in.) 4 / 16 x 25 x 1 4 / 16 x 25 x 1

Physical data (cont)

NOTES:

1. Included with economizer.

2. Sensors used to optimize economizer performance.

3. See application data for assistance.

4. PremierLink controller is not available on units with SAV.

5. SAV is required on all units for installation in the United States as per the Department of Energy (DOE) efficiency standard of 2018.

6. Not available with SAV.

FACTORY-INSTALLED OPTIONS AND FIELD-INSTALLED ACCESSORIES

CATEGORY ITEM

FACTORY-

INSTALLED

OPTION

FIELD-

INSTALLED

ACCESSORY

CABINET

Dedicated vertical air flow duct configuration X Dedicated horizontal air flow duct configuration X Hinged access panels X

COIL OPTIONS

Cu/Cu (indoor and outdoor) coils X E-coated (indoor and outdoor) coils X Pre-coated (indoor and outdoor) coils X

CONDENSER PROTECTION Condenser coil hail guard (louvered design) X X

CONTROLS

Thermostats, temperature sensors, and subbases X PremierLink™ DDC communicating controller 4, 6 X X RTU Open multi-protocol controller X Smoke detector (supply and/or return air) X Time Guard II compressor delay control circuit X Phase Monitor X Condensate overflow switch X X

ECONOMIZERS AND

OUTDOOR AIR DAMPERS

EconoMi$er® IV (for electro-mechanical controlled RTUs) X X EconoMi$er2 (for DDC controlled RTUs) X X Motorized 2-position outdoor-air damper 6 X X Manual outdoor-air damper (25%) 6 X X Barometric relief 1 X X Power exhaust X X Barometric relief hood (Horizontal economizer only) X Ultra-Low Leak EconoMi$er X for electro-mechanical controls, complies with FDD. (Low Leak and Ultra Low Leak air damper models) X X

ECONOMIZER SENSORS AND

IAQ DEVICES

Single dry bulb temperature sensors 2 X X Differential dry bulb temperature sensors 2 X Single enthalpy sensors 2 X X Differential enthalpy sensors 2 X CO2 sensor (wall, duct, or unit mounted) 3 X X

ELECTRIC HEAT

Electric resistance heaters X Single point kit X

INDOOR MOTOR & DRIVE

Multiple motor and drive packages X Staged Air Volume (SAV) system w/VFD controller (2-stage cooling only with electro-mechanical controls and RTU Open controller) 5 X

Display kit for SAV™ system with VFD X LOW AMBIENT CONTROL Motormaster® head pressure controller 3 X

POWER OPTIONS

Convenience outlet (powered) X Convenience outlet (un-powered): 15 amp factory-installed, 20 amp field-installed X X Non-fused disconnect X

ROOF CURBS

Roof curb 14-in. (356 mm) X Roof curb 24-in. (610 mm) X Adapter Curb (Adapts to Models - DP/DR/HJ/TM) X

Options and accessories

Economizer (dry-bulb or enthalpy) Economizers can reduce operating costs. 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 CO2 sensors, econ-omizers can limit the ventilation air to only that amount required.

Economizers are available, installed and tested by the fac-tory, with either enthalpy or dry-bulb temperature inputs.

There are also models for electro-mechanical as well as direct digital controllers. Additional sensors are available as accessories to optimize the economizer.

Economizers include gravity-controlled barometric relief that helps equalize building pressure and ambient air pres-sures. This can be a cost effective solution to prevent build-ing pressurization. If further control of exhaust air is required, a dual centrifugal fan power exhaust system is also available.

CO2 sensor The CO2 sensor improves productivity and saves money by working with the economizer to intake only the correct amount of outside air for ventilation. As occupants fill your building, the CO2 sensor detects their presence through increasing CO2 levels, and opens the economizer appropri-ately.

When the occupants leave, the CO2 levels decrease, and the sensor appropriately closes the economizer. This intel-ligent control of the ventilation air, called Demand Con-trolled Ventilation (DCV), reduces the overall load on the rooftop, saving money.

Smoke detectors Trust the experts. Smoke detectors make your application safer and your job easier. Carrier smoke detectors immedi-ately shut down the rooftop unit when smoke is detected.

They are available, installed by the factory, for supply air, return air, or both.

Louvered hail guards Sleek, louvered panels protect the condenser coil from hail damage, foreign objects, and incidental contact.

Convenience outlet (powered or un-powered) Reduce service and/or installation costs by including a con-venience outlet in your specification. Carrier will install this service feature at our factory. Provides a convenient, 15 amp, 115v GFCI receptacle with “Wet in Use" cover.

The “powered” option allows the installer to power the outlet from the line side of the disconnect side as required by code. The “un-powered” option is to be powered from a separate (non-unit) 115/120v power source. The unpowered convenience outlet is available as a 15 amp factory-installed option or a 20 amp field-installed acces-sory.

The 20 amp unpowered convenience outlet kit provides a flexible installation method which allows code compliance for height requirements of the GFCI outlet from the fin-ished roof surface as well as the capability to relocate the outlet to a more convenient location, if necessary.

Non-fused disconnect This OSHA-compliant, factory-installed, safety switch allows a service technician to locally secure power to the rooftop. When selecting a factory-installed non-fused dis-connect, note they are sized for unit as ordered from the factory. The sizing of these does not accommodate any power exhaust devices, etc.

Power exhaust with barometric relief Superior internal building pressure control. This field-installed accessory or factory-installed option may elimi-nate the need for costly, external pressure control fans.

PremierLink™ DDC controller This CCN (Carrier Comfort Network®) controller regulates your rooftop performance to tighter tolerances and expanded limits, as well as facilitates zoning systems and digital accessories. It also unites your Carrier HVAC equip-ment together on one, coherent CCN network. The Pre-mierLink controller can be factory-installed or field-installed.

RTU Open multi-protocol controller Connect the rooftop to an existing BAS without needing complicated translators or adapter modules using the RTU Open controller. This new controller speaks the 4 most common building automation system languages (BACnet1, Modbus2, N2, and LonWorks3). Use this controller when you have an existing BAS.

Time guard II control circuit This accessory protects your compressor by preventing short-cycling in the event of some other failure, prevents the compressor from restarting for 30 seconds after stop-ping. Not required with PremierLink™ controller, RTU Open controller, or authorized commercial thermostats.

Filter or fan status switches Use these differential pressure switches to detect a filter clog or indoor fan motor failure. When used in conjunction with a compatible unit controller/thermostat the switches will activate alarm to warn the appropriate personnel.

Motorized 2-position damper The Carrier 2-position motorized outdoor air damper admits up to 100% outside air. Using reliable, gear-driven technology, the 2-position damper opens to allow ventila-tion air and closes when the rooftop stops, stopping unwanted infiltration. Not available with Staged Air Vol-ume (SAV) models.

Manual OA damper Manual outdoor air dampers are an economical way to bring in ventilation air. The dampers are available in 25% versions. Not available with Staged Air Volume (SAV) models.

Alternate motors and drives Some applications need larger horsepower motors, some need more airflow, and some need both. Regardless of the case, your Carrier expert has a factory-installed combina-tion to meet your application. A wide selection of motors and pulleys (drives) are available, factory-installed, to han-dle nearly any application.

1. BACnet is a trademark of ASHRAE.

2. Modbus is a registered trademark of Schneider Electric.

3. LonWorks is a registered trademark of Echelon Corporation.

Options and accessories (cont)

Condenser overflow switch (factory-installed option) This sensor and related controller monitors the condensate level in the drain pan and shuts down compression opera-tion when overflow conditions occur. It includes:

• Indicator light - solid red (more than 10 seconds on water contact - compressors disabled), blinking red (sen-sor disconnected)

• 10 second delay to break - eliminates nuisance trips from splashing or waves in pan (sensor needs 10 seconds of constant water contact before tripping)

Disables the compressor(s) operation when condensate plug is detected, but still allows fans to run for Economizer.

Staged Air Volume (SAV™) indoor fan speed system with a Variable Frequency Drive (VFD) Carrier’s Staged Air Volume (SAV) system saves energy and installation time by utilizing a Variable Frequency Drive (VFD) to automatically adjust the indoor fan motor speed in sequence with the units cooling operation. Per ASHRAE 90.1-2016 and IECC1-2015 standards, during the first stage of cooling operation the VFD will adjust the fan motor to provide 66% of the total cfm established for the unit. When a call for the second stage of cooling is required, the VFD will allow the total cfm for the unit estab-lished (100%). During the heating mode the VFD will allow total design cfm (100%) operation and during the ventila-tion mode the VFD will allow operation to 66% of total cfm.

Compared to single speed indoor fan motor systems, Car-rier’s SAV system can save substantial energy, 25%+ ver-sus single speed indoor fan motor systems.

The VFD used in Carrier’s SAV system has soft start capa-bilities to slowly ramp up the speeds, thus eliminating any high inrush air volume during initial start-up. It also has internal over current protection for the fan motor and a field-installed display kit that allows adjustment and in depth diagnostics of the VFD.

This SAV system is available on models with 2-stage cool-ing operation with electro-mechanical controls or RTU Open multi-protocol controls. Both space sensor and conventional thermostats controls can be used to provide accurate control in any application.

The SAV system is very flexible for initial fan performance set up and adjustment. The standard factory shipped VFD is pre-programmed to automatically stage the fan speed between the first and second stage of cooling. The unit fan performance static pressure and cfm can be easily adjusted using the traditional means of pulley adjustments. The other means to adjust the unit static and cfm performance is to utilize the field-installed display kit and adjust the fre-quency and voltage in the VFD to required performance requirements. In either case, once set up, the VFD will automatically adjust the speed between the cooling stage operations.

Motormaster head pressure controller The Motormaster motor controller is a low ambient, head pressure controller kit that is designed to maintain the unit’s condenser head pressure during periods of low ambi-ent cooling operation. This device should be used as an alternative to economizer free cooling when economizer usage is either not appropriate or desired. The Motormas-ter will either cycle the outdoor-fan motors or operate them at reduced speed to maintain the unit operation, depending on the model.

Thru-the-base connections Thru-the-base provisions/connection points are available as standard with every unit. When bottom connections are required, field-furnished couplings are required.

Electric heaters/single point kit Carrier offers a full-line of field-installed accessory heaters and single point kits when required. The heaters are very easy to use, install, and are all pre-engineered and certified.

Barometric hood For horizontal economizer applications where relief damper is installed in duct work. This kit provides the needed protection.

Hinged access panels Allows access to unit’s major components with specifically designed hinged access panels. Panels are filter, control box, fan motor and compressor. 1. IECC is a registered trademark of International Code Council, Inc.

IMPORTANT: Data based on 0.10 ($/kWh) in an office application utilizing Carrier’s HAP 4.6 simula-tion software program.

NOTE: Where multiple variations are available, the heaviest combina-tion is listed.

OPTIONS AND ACCESSORIES WEIGHTS

BASE UNIT WITH OPTIONS AND

ACCESSORIES (WEIGHT ADDERS)

MAX WEIGHT ADDERS

50TCQD17 50TCQD24

lb kg lb kg

Power Exhaust 125 57 125 57

EconoMi$er System 170 77 170 77

Copper Tube/Fin Evaporator Coil 110 50 135 61

Roof Curb 14-in. (356 mm) 240 109 255 116

Roof Curb 24-in. (610 mm) 340 154 355 161

Louvered Hail Guard 60 27 120 54

CO2 Sensor 5 2 5 2

Return Smoke Detector 5 2 5 2

Supply Smoke Detector 5 2 5 2

Fan/Filter Status Switch 2 1 2 1

Non-Fused Disconnect 15 7 15 7

Powered Convenience Outlet 35 16 35 16

Non-Powered Convenience Outlet 5 2 5 2

Enthalpy Sensor 2 1 2 1

Differential Enthalpy Sensor 3 1 3 1

Two-Position Motorized Damper 50 23 50 23

Manual Damper 35 16 35 16

Field Filter Track 4-in. (102 mm) 12 5 12 5

Motormaster Controller 35 16 35 16

Medium Static Motor/Drive 5 2 6 3

High Static Motor/Drive 11 5 16 7

SAV™ System with VFD 20 9 30 14

50TCQ*17 VERTICAL AIRFLOW

Dimensions

50TCQ*17 HORIZONTAL AIRFLOW

Dimensions (cont)

50TCQ*17 BACK VIEW AND CONDENSATE DRAIN LOCATION

50TCQ*17 CORNER WEIGHTS AND CLEARANCES

50TCQ*17 BOTTOM VIEW

ROOF CURB DIMENSIONS — SIZE 17 UNITS

NOTE:

1. Roof curb accessory is shipped unassembled.

2. Dimensions shown in [ ] are in millimeters.

3. Roof curb galvanized steel.

4. Attach ductwork to curb (flanges on duct rest on curb).

5. Service clearance 4 ft on each side.

6. Direction of air flow

UNIT SIZE “A" ROOF CURB ACCESSORY

50TCQ17 1"-2" [356.0] CRRFCURB045A00

2"-0" [610.0] CRRFCUBR046A00

50TCQ*24 VERTICAL AIRFLOW

50TCQ*24 HORIZONTAL AIRFLOW

50TCQ*24 BACK VIEW AND CONDENSATE DRAIN LOCATION

50TCQ*24 CORNER WEIGHTS AND CLEARANCES

50TCQ*24 BOTTOM VIEW

ROOF CURB DIMENSIONS — SIZE 24 UNITS

NOTE:

1. Roof curb accessory is shipped unassembled.

2. Dimensions shown in [ ] are in millimeters.

3. Roof curb galvanized steel.

4. Attach ductwork to curb (flanges on duct rest on curb).

5. Service clearance 4 ft on each side.

6. Direction of air flow

UNIT SIZE “A" ROOF CURB ACCESSORY

50TCQ24 1"-2" [356.0] CRRFCURB047A00

2"-0" [610.0] CRRFCUBR048A00

LEGEND

COOLING CAPACITIES 2-STAGE COOLING, 15 TONS

50TCQD17

AMBIENT TEMPERATURE (°F)

85 95 105 115

EAT (db) EAT (db) EAT (db) EAT (db) 75 80 85 75 80 85 75 80 85 75 80 85

C F

M

E A

T (w b

58 TC

SHC

152.7 135.5

153.6 153.6

161.2 161.2

145.9 132.0

147.8 147.8

155.6 155.6

138.8 128.4

141.9 141.9

149.5 149.5

131.2 124.4

135.6 135.6

143.0 143.0

62 TC

SHC

164.1 118.5

163.9 139.2

164.2 158.6

156.9 115.2

156.7 135.9

157.1 155.1

149.2 111.7

149.0 132.3

150.0 150.0

141.0 108.1

140.8 128.4

143.1 143.1

67 TC

SHC

179.4 96.7

179.2 117.5

179.0 138.3

171.6 93.5

171.4 114.3

171.1 135.0

163.2 90.0

162.9 110.8

162.7 131.6

154.2 86.5

154.0 107.2

153.6 127.9

72 TC

SHC

195.8 74.1

195.6 95.4

195.3 116.2

187.2 71.1

187.0 92.1

186.7 113.0

178.0 67.9

177.8 88.8

177.5 109.6

168.2 64.5

167.9 85.2

167.6 106.0

76 TC

SHC

209.5 77.4

209.2 98.2

200.2 74.2

199.9 95.0

190.2 70.9

190.0 91.7

179.6 67.4

179.3 88.2

C F

M

E A

T (w b

58 TC

SHC

157.5 146.1

161.1 161.1

169.6 169.6

150.4 142.4

155.2 155.2

163.5 163.5

143.0 138.2

148.9 148.9

156.9 156.9

135.1 133.5

142.0 142.0

149.8 149.8

62 TC

SHC

169.1 127.1

168.8 150.6

170.2 170.2

161.5 123.7

161.2 147.0

163.7 163.7

153.3 120.1

153.2 143.1

157.1 157.1

144.6 116.4

144.6 138.7

149.9 149.9

67 TC

SHC

184.7 102.2

184.4 126.0

184.1 149.7

176.3 98.9

176.1 122.6

175.7 146.3

167.5 95.4

167.2 119.1

166.8 142.7

158.0 91.7

157.7 115.4

157.3 138.8

72 TC

SHC

201.2 77.0

201.0 100.7

200.7 124.5

192.1 73.7

191.9 97.4

191.5 121.2

182.4 70.3

182.2 94.0

181.8 117.8

172.1 66.7

171.8 90.4

171.3 114.1

76 TC

SHC

215.0 80.3

214.7 104.1

205.1 77.0

204.8 100.8

194.7 73.7

194.3 97.4

183.5 70.1

183.1 93.9

C F

M

E A

T (w b

58 TC

SHC

161.4 155.5

167.8 167.8

176.7 176.7

154.1 151.8

161.5 161.5

170.2 170.2

146.9 145.6

154.7 154.7

163.1 163.1

139.3 139.3

147.4 147.4

155.5 155.5

62 TC

SHC

172.9 135.1

172.7 160.8

176.9 176.9

164.9 131.7

164.9 156.8

170.3 170.3

156.4 128.0

156.7 152.3

163.3 163.3

147.4 124.2

148.2 146.4

155.6 155.6

67 TC

SHC

188.7 107.3

188.3 133.9

187.9 160.4

180.0 103.9

179.6 130.5

179.2 156.8

170.7 100.4

170.4 126.9

170.0 152.9

160.9 96.9

160.5 123.2

160.2 148.7

72 TC

SHC

205.4 79.1

205.1 105.7

204.7 132.4

195.9 75.8

195.6 102.4

195.1 129.0

185.8 72.3

185.5 98.9

185.0 125.5

175.1 68.7

174.7 95.2

174.2 121.8

76 TC

SHC

219.2 82.9

218.9 109.6

209.0 79.7

208.5 106.3

198.0 76.2

197.6 102.8

186.5 72.7

186.0 99.2

C F

M

E A

T (w b

58 TC

SHC

165.1 163.2

173.4 173.4

182.8 182.8

158.0 158.0

166.8 166.8

175.9 175.9

150.9 150.9

159.6 159.6

168.4 168.4

143.5 143.5

151.9 151.9

160.3 160.3

62 TC

SHC

176.0 142.8

176.2 169.9

182.9 182.9

167.7 139.3

168.2 165.7

176.0 176.0

158.9 135.6

160.0 160.0

168.5 168.5

149.6 131.6

152.0 152.0

160.4 160.4

67 TC

SHC

191.9 112.2

191.5 141.5

191.1 170.3

182.9 108.7

182.5 138.1

182.1 166.5

173.3 105.1

172.9 134.4

172.7 162.2

163.2 101.3

162.7 130.6

162.8 157.1

72 TC

SHC

208.8 81.1

208.4 110.5

207.9 139.9

198.9 77.8

198.5 107.1

198.0 136.5

188.5 74.3

188.1 103.6

187.5 132.9

177.4 70.6

177.0 99.9

176.4 129.2

76 TC

SHC

222.6 85.4

222.2 114.8

212.0 82.1

211.5 111.5

200.7 78.7

200.2 108.0

188.8 75.1

188.3 104.4

C

F M

E

A T

(w b

58 TC

SHC

168.7 168.7

178.2 178.2

187.9 187.9

161.9 161.9

171.2 171.2

180.7 180.7

154.7 154.7

163.7 163.7

172.8 172.8

147.0 147.0

155.6 155.6

164.4 164.4

62 TC

SHC

178.5 150.2

179.4 177.3

188.1 188.1

170.0 146.6

171.6 171.6

180.8 180.8

160.9 142.6

163.8 163.8

172.9 172.9

151.4 138.3

155.8 155.8

164.5 164.5

67 TC

SHC

194.5 116.8

194.1 148.8

193.8 179.5

185.3 113.3

184.8 145.3

184.6 175.2

175.5 109.7

174.9 141.7

175.1 170.2

165.0 105.8

164.5 137.8

165.4 163.5

72 TC

SHC

211.5 83.1

211.1 115.1

210.6 147.2

201.4 79.7

201.0 111.6

200.3 143.7

190.7 76.1

190.2 108.1

189.6 140.1

179.4 72.4

178.8 104.3

178.2 136.3

76 TC

SHC

225.4 87.8

224.9 119.9

214.5 84.5

213.9 116.5

202.9 81.0

202.3 113.0

190.8 77.4

190.1 109.3

— — Do not operate Cfm — Cubic feet per minute (supply air) EAT (db) — Entering Air Temperature (dry bulb) EAT (wb) — Entering Air Temperature (wet bulb) SHC — Sensible Heat Capacity (1000 Btuh) Gross TC — Total Capacity (1000 Btuh) Gross

Performance data

COOLING CAPACITIES, 2-STAGE COOLING, 20 TONS

50TCQD24

AMBIENT TEMPERATURE (°F)

85 95 105 115

EAT (db) EAT (db) EAT (db) EAT (db) 75 80 85 75 80 85 75 80 85 75 80 85

C F

M

E A

T (w b

58 TC

SHC

211.1 191.5

214.4 214.4

225.9 225.9

201.2 186.3

206.2 206.2

217.5 217.5

190.5 180.6

197.3 197.3

208.3 208.3

179.4 173.1

187.7 187.7

198.3 198.3

62 TC

SHC

227.4 168.0

227.1 197.4

228.8 222.1

216.8 163.1

216.4 192.4

219.2 215.5

205.2 157.8

204.9 186.9

208.6 208.6

192.8 152.3

192.6 180.9

198.5 198.5

67 TC

SHC

249.2 137.5

248.8 167.2

248.4 196.8

237.7 132.7

237.2 162.4

236.8 191.9

225.1 127.5

224.6 157.2

224.1 186.7

211.5 122.0

211.0 151.7

210.5 181.0

72 TC

SHC

272.6 106.0

272.1 136.2

271.6 165.9

259.9 101.4

259.5 131.4

258.9 161.1

246.2 96.4

245.7 126.3

245.1 156.0

231.3 91.2

230.8 120.9

230.2 150.6

76 TC

SHC

291.8 110.8

291.3 140.7

278.2 106.1

277.6 136.0

263.3 101.1

262.7 130.9

247.4 95.8

246.7 125.6

C F

M

E A

T (w b

58 TC

SHC

218.0 206.7

225.8 225.8

238.1 238.1

207.9 199.7

217.0 217.0

229.0 229.0

197.5 192.4

207.4 207.4

219.0 219.0

186.3 184.6

169.9 169.9

208.1 208.1

62 TC

SHC

234.3 180.8

234.0 214.0

238.5 238.5

223.0 175.7

222.9 208.4

229.2 229.2

210.8 170.3

211.0 201.5

219.2 219.2

197.6 164.6

199.1 193.2

208.3 208.3

67 TC

SHC

265.5 145.7

256.0 179.8

255.4 213.7

244.2 140.8

243.7 174.8

243.1 208.6

230.9 135.5

230.4 169.5

229.8 203.0

216.6 129.9

216.0 163.9

215.6 196.9

72 TC

SHC

280.1 109.9

279.5 144.2

278.9 178.3

266.7 105.1

266.1 139.3

265.4 173.4

252.2 99.9

251.6 134.1

250.9 168.2

236.6 94.4

236.0 128.6

235.2 162.6

76 TC

SHC

299.4 115.2

298.7 149.4

285.0 110.4

284.2 144.6

269.4 105.3

268.6 139.5

252.6 99.9

251.7 134.0

C F

M

E A

T (w b

58 TC

SHC

224.7 218.0

235.3 235.3

248.4 248.4

214.6 211.0

225.9 225.9

238.6 238.6

203.6 203.6

215.6 215.6

227.9 227.9

192.8 192.8

204.4 204.4

216.2 216.2

62 TC

SHC

239.6 192.9

239.8 228.6

248.6 248.6

227.8 187.7

229.0 220.5

238.8 238.8

215.0 182.1

217.3 212.7

228.1 228.1

201.4 176.2

204.7 204.7

216.4 216.4

67 TC

SHC

262.1 153.4

261.5 191.8

260.9 229.5

249.2 148.4

248.6 186.7

248.1 224.0

235.4 143.0

234.7 181.3

234.5 217.8

220.5 137.3

219.8 175.6

220.1 209.5

72 TC

SHC

285.9 113.2

285.2 151.7

284.4 190.2

271.9 108.3

271.2 146.8

270.4 185.2

256.9 103.0

256.1 141.5

255.2 179.9

240.7 97.5

239.9 135.9

239.0 174.2

76 TC

SHC

305.2 119.2

304.4 157.8

290.2 114.3

289.3 152.9

274.0 109.1

273.0 147.6

256.6 103.7

255.6 142.1

C F

M

E A

T (w b

58 TC

SHC

230.7 228.5

243.3 243.3

256.9 256.9

220.3 220.3

233.4 233.4

246.5 246.5

209.9 209.9

222.5 222.5

235.2 235.2

198.6 198.6

210.7 210.7

222.8 222.8

62 TC

SHC

243.8 204.4

245.9 238.9

257.1 257.1

231.6 199.0

234.7 231.3

246.7 246.7

218.5 193.2

222.7 222.7

235.4 235.4

204.5 186.8

210.8 210.8

223.0 223.0

67 TC

SHC

266.5 160.8

265.8 203.3

265.4 243.9

253.2 155.6

252.5 198.2

252.4 237.6

239.0 150.2

238.1 192.6

239.0 228.9

223.6 144.4

222.7 186.7

224.9 219.9

72 TC

SHC

290.5 116.3

289.7 159.0

288.8 201.6

276.1 111.3

275.3 154.0

274.3 196.5

260.6 106.0

259.7 148.6

258.6 191.2

243.9 100.4

243.0 142.9

241.9 185.4

76 TC

SHC

309.8 123.0

308.8 165.8

294.3 118.1

293.2 160.8

277.6 112.8

276.5 155.5

259.8 107.3

258.6 149.9

,0

C

F M

E A

T (w b

58 TC

SHC

236.3 236.3

250.2 250.2

264.2 264.2

226.3 226.3

239.7 239.7

253.3 253.3

215.4 215.4

228.3 228.3

241.4 241.4

203.6 203.6

216.0 216.0

228.5 228.5

62 TC

SHC

247.3 215.3

251.2 249.0

264.4 264.4

234.8 209.6

239.9 239.9

253.5 253.5

221.4 203.4

228.5 228.5

241.6 241.6

207.2 196.2

216.1 216.1

228.7 228.7

67 TC

SHC

270.1 167.8

269.3 214.4

269.5 256.5

256.5 162.7

255.6 209.1

256.9 247.6

241.8 157.1

240.9 203.4

243.4 238.8

226.1 151.3

225.2 197.1

229.0 229.0

72 TC

SHC

294.3 119.1

293.4 165.9

292.3 212.7

279.5 114.1

278.5 160.9

277.4 207.5

263.5 108.8

262.5 155.5

261.3 202.0

246.5 103.1

245.4 149.7

244.2 196.1

76 TC

SHC

313.5 126.6

312.4 173.5

297.6 121.7

296.4 168.5

280.5 116.4

279.2 163.1

262.3 110.8

261.0 157.5

— — Do not operate Cfm — Cubic feet per minute (supply air) EAT (db) — Entering Air Temperature (dry bulb) EAT (wb) — Entering Air Temperature (wet bulb) SHC — Sensible Heat Capacity (1000 Btuh) Gross TC — Total Capacity (1000 Btuh) Gross

Performance data (cont)

LEGEND

HEATING CAPACITIES, 15 TONS

50TCQD17

RETURN AIR (°F db) CFM (STANDARD AIR)

TEMPERATURE AIR ENTERING OUTDOOR COIL (°F db AT 70% RH) –5 0 10 17 30 40 47 50 60

Capacity 72.8 80.1 95.8 107.6 132.6 155.3 171.2 175.7 195.4 Int. Cap. 67.1 73.7 87.9 98.1 116.2 155.3 171.2 175.7 194.4

Capacity 75.8 83.1 99.3 111.6 137.6 160.5 174.1 178.4 197.5 Int. Cap. 69.9 76.5 91.1 101.7 120.6 160.5 174.1 178.4 197.5

Capacity 79.4 86.7 103.2 116.0 142.4 164.0 176.9 181.1 199.6 Int. Cap. 73.2 79.8 94.7 105.8 124.8 164.0 176.9 181.1 199.6

Capacity 65.8 73.0 88.9 100.5 124.7 145.1 163.1 168.7 190.3 Int. Cap. 60.6 67.2 81.6 91.6 109.2 145.1 163.1 168.7 190.3

Capacity 68.9 76.4 92.6 104.5 129.6 151.5 169.0 174.0 193.0 Int. Cap. 63.5 70.3 85.0 95.3 113.6 151.5 169.0 174.0 193.0

Capacity 72.6 80.2 96.6 108.8 134.5 157.3 173.2 177.4 195.7 Int. Cap. 66.9 73.8 88.7 99.2 117.9 157.3 173.2 177.4 195.7

Capacity 60.3 67.5 83.8 95.4 118.8 139.0 156.5 162.2 186.4 Int. Cap. 55.5 62.1 76.9 87.0 104.1 139.0 156.5 162.2 186.4

Capacity 63.3 70.8 87.5 99.4 123.8 144.7 163.0 168.5 189.9 Int. Cap. 58.4 65.2 80.3 90.6 108.5 144.7 163.0 168.5 189.9

Capacity 67.0 74.7 91.5 103.6 128.8 149.9 168.5 173.6 192.8 Int. Cap. 61.7 68.7 84.0 94.5 112.8 149.9 168.5 173.6 192.8

Capacity — Instantaneous Capacity (1000 Btuh) includes indoor fan motor heat at AHRI static conditions Int. Cap. — Integrated Capacity is Instantaneous Capacity minus the effects of front on the outdoor coil and the heat required to defrost RH — Relative Humidity db — Dry Bulb

HEATING CAPACITIES, 20 TONS

50TCQD24

RETURN AIR (°F db) CFM (STANDARD AIR)

TEMPERATURE AIR ENTERING OUTDOOR COIL (°F db AT 70% RH) –5 0 10 17 30 40 47 50 60

Capacity 93.4 104.1 125.2 141.7 177.0 206.9 229.0 235.4 261.4 Int. Cap. 86.1 95.8 114.9 129.2 155.1 206.9 229.0 235.4 261.4

Capacity 98.8 109.5 131.2 160.8 184.4 214.6 233.4 238.4 264.3 Int. Cap. 91.0 100.8 120.4 146.6 161.6 214.6 233.4 238.4 264.3

10000 Capacity 104.8 115.7 137.8 155.0 191.2 221.0 236.8 242.2 267.3 Int. Cap. 96.6 106.4 126.4 141.4 167.5 221.0 236.8 242.2 267.3

Capacity 81.1 92.2 114.9 131.1 165.6 195.1 219.1 226.5 256.2 Int. Cap. 74.7 84.9 105.5 119.5 145.1 195.1 219.1 226.5 256.2

Capacity 86.1 97.5 120.3 137.0 173.1 203.3 227.0 233.8 259.2 Int. Cap. 79.3 89.7 110.4 124.9 151.7 203.3 227.0 233.8 259.2

10000 Capacity 91.9 103.5 126.4 143.5 179.7 211.8 233.6 239.8 262.9 Int. Cap. 84.7 95.2 116.0 130.8 157.5 211.8 233.6 239.8 262.9

Capacity 72.6 84.0 107.3 124.4 157.7 187.2 210.7 218.5 250.8 Int. Cap. 66.9 77.3 98.5 113.5 138.2 187.2 210.7 218.5 250.8

Capacity 77.2 88.9 112.8 129.9 164.8 195.8 219.6 227.2 256.7 Int. Cap. 71.2 81.8 103.5 118.4 144.4 195.8 219.6 227.2 256.7

10000 Capacity 82.8 94.7 118.9 136.0 172.0 203.8 227.4 234.5 261.7 Int. Cap. 76.3 87.1 109.2 124.0 150.7 203.8 227.4 234.5 261.7

Capacity — Instantaneous Capacity (1000 Btuh) includes indoor fan motor heat at AHRI static conditions Int. Cap. — Integrated Capacity is Instantaneous Capacity minus the effects of front on the outdoor coil and the heat required to defrost RH — Relative Humidity db — Dry Bulb

DAMPER, BAROMETRIC RELIEF AND POWER EXHAUST PERFORMANCE

MANUAL DAMPER PERFORMANCE

BAROMETRIC RELIEF FLOW CAPACITY

POWER EXHAUST FAN PERFORMANCE

1 inch open

2 inches open

3 inches open

4 inches open

5 inches open

Manual Damper Performance

ST

A

TI

C

P R

ES

SU

R E

(IN

W

C

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000

AIRFLOW (CU FT/MIN)

Relief Flow (CFM) 0 1000 2000 3000 4000 5000

Barometric Relief Flow Capacity

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

Re tu rn D uc t S ta tic

P re ss ur e (in w g.

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

3250 3350 3450 3550 3650 3750 3850 3950 4050 4250 4450 4650 4850

Exhaust Airflow (CFM)

S ta tic P re ss u re

B et w ee n R et u rn D u ct a n d O

A in . w g

Low Speed 208 V Med Speed 208 V High Speed 208 V

Low Speed 230,460,575V Med Speed 230,460,575V High Speed 230,460,575V

Power Exhaust Fan Performance - 50TCQ 17, 24

STATIC PRESSURE ADDERS

ECONOMIZER - VERTICAL AND HORIZONTAL DUCT CONFIGURATION

50TCQ MODEL SIZES 17 AND 24

CFM 4,750 5,750 6,750 7,750 8,750 9,750 10,750 11,750 12,750 13,750

STATIC PRESSURE ADDER

(in. wg) 0.00 0.01 0.01 0.02 0.03 0.05 0.06 0.07 0.09 0.11

ELECTRIC HEATERS - VERTICAL AND HORIZONTAL DUCT CONFIGURATION

50TCQ MODEL SIZES 17 AND 24

CFM 4,750 5,750 6,750 7,750 8,750 9,750 10,750 11,750 12,750 13,750

25 kW HEATER 0.01 0.02 0.03 0.04 0.05 0.06 0.08 0.09 0.11 0.13 50 kW HEATER 0.02 0.03 0.05 0.07 0.10 0.12 0.15 0.19 0.22 0.26 75 kW HEATER 0.03 0.05 0.08 0.11 0.14 0.18 0.23 0.28 0.34 0.40

GENERAL FAN PERFORMANCE NOTES

1. Interpolation is permissible. Do not extrapolate.

2. External static pressure is the static pressure differ-ence between the return duct and the supply duct plus the static pressure caused by any Factory-installed options (FIOPs) or accessories.

3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories may add static pressure losses as shown in static pressure adders tables on page 27. Selection software is available, through your salesperson, to help you select the best motor/drive combination for your application.

4. The Fan Performance tables offer motor/drive rec-ommendations. In cases when two motor/drive com-binations would work, Carrier recommends the lower horsepower option.

5. For information on the electrical properties of Carrier motors, please see the Electrical information section of this book.

6. For more information on the performance limits of Carrier motors, see the application data section of this book.

50TCQD17 — 15 TON VERTICAL SUPPLY/RETURN

CFM

AVAILABLE EXTERNAL STATIC PRESSURE (IN. WG)

0.2 0.4 0.6 0.8 1.0

RPM BHP…