THE ULTIMATE SOLUTION FOR CLASSROOM HVAC...THE ULTIMATE SOLUTION FOR CLASSROOM HVAC The QLCI...
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THE ULTIMATE SOLUTION FOR CLASSROOM HVAC The QLCI displacement chilled beam is ideally suited to address the unique demands of a classroom environment and to provide optimum comfort and improved indoor air quality. • Displacement ventilation enhances the removal of space contaminants • Terminals are designed to allow the supply of 100% outside air at (or near) the minimum ventilation rate for the room • Patented design integrates induction nozzles to enable the delivery of primary air at conventional (50°F to 55°F) AHU supply temperatures • Compliant with ANSI S12.60 • Energy efficient • Rugged cabinet design • Competitive first cost • Low cost of operation • Ideal for new and retrofit construction • Guaranteed space ventilation Bookshelves and field modifiable sections among available accessories Grill removes easily for maintenance Threaded coil connections with flexible connectors for easy installation Drain pan with piping connections for condensate if necessary
Transcript of THE ULTIMATE SOLUTION FOR CLASSROOM HVAC...THE ULTIMATE SOLUTION FOR CLASSROOM HVAC The QLCI...
THE ULTIMATE SOLUTION FOR CLASSROOM HVACThe QLCI displacement chilled beam is ideally suited to address the unique demands of a classroom environment and to provide optimum comfort and improved indoor air quality.
• Displacement ventilation enhances the removal of space contaminants
• Terminals are designed to allow the supply of 100% outside air at (or near) the minimum ventilation rate for the room
• Patented design integrates induction nozzles to enable the delivery of primary air at conventional (50°F to 55°F) AHU supply temperatures
• Compliant with ANSI S12.60
• Energy e�cient
• Rugged cabinet design
• Competitive �rst cost
• Low cost of operation
• Ideal for new and retro�t construction
• Guaranteed space ventilation
Bookshelves and �eld modi�able sections among available accessories
Grill removes easily for maintenance
Threaded coil connections with �exible connectors for easy installation
Drain pan with piping connections for condensate if necessary
Type Page
DESCRIPTION
MATERIALS AND SURFACES• Basic cabinets constructed of 16 gauge steel• Unit painted with textured powder coat �nish in (standard) color as selected by architect• All internal sheet metal components are galvanized
INSTALLATION AND COMMISSIONING• Easy installation• Threaded coil �ttings for easy installation with �exible connectors• Front panels easily removable for maintenance
STANDARDS AND GUIDELINES• Low noise levels conform to ANSI StandardS12.60• ASHRAE Standard 62.1 Ventilation for Acceptable Air Quality mandates classrooms be supplied a minimum outdoor air�ow during all occupied hours
MAINTENANCE• There are no moving parts within the terminals• Space temperature control is accomplished by the thermostatic sequencing and modulation of a pair of water valves (one chilled/one hot)• The simple air handling unit con�guration makes the system nearly maintenance free• Occasional vacuuming of the coil may be required in some applications• On rare occasion the condensate pan may require cleaning
APPLICATION• Displacement ventilation enhances the removal of space respiratory contaminants• Quiet operation making it an ideal classroom and patient room solution• Designed to provide exceptional air quality and acoustical performance
NOMINAL SIZES• 1500, 2000
SPECIAL FEATURES• Patented design integrates nozzles to enable the delivery of primary air at conventional (50° to 55°F) AHU supply temperatures making the QLCI an ideal solution for humid climates• Designed to allow supply of 100% outside air at (or near) the minimum ventilation rate for a classroom• Primary air inlets allow connections of up to three terminals in a series
PARTS AND CHARACTERISTICS• QLCI air conditioning terminal housed in appropriate architectural cabinet• Duct connection• A series of injection nozzles• Integral heat transfer coil• A perforated or louvered face• Integral drain pan
CONSTRUCTION FEATURES• Rugged cabinet design• Front panels can be removed for maintenance using an allen wrench to loosen tamper resistant screws• Drain pan with piping connections for removal of condensate if necessary• Threaded coil �ttings for easy installation with �exible connector• Face panels shall be pencil-proof and at least45% free area• Top of cabinet is �at and is ideal for use as bookshelf or other storage
GENERAL INFORMATION
General Information and Functional Description 2-3Operation and Installation Notes 4Performance Data and Quick Selection Table 4-6Dimensions and Casing Arrangements 6-9Speci�cation Text and Order Code 10
QLCI
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TECHNICAL DATA Nominal width
Nominal Length
Primary 60 - 210 CFM
Cooling capacity Up to 8500 btu/h
Heating capacity Up to 4500 btu/h
Primary air temperature 50°F to 65°F
Operating temperature 73°F to 77°F
Functional descriptionFUNCTION
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1
2
6
5
3
4
QLCI terminals are designed to provide air quality and acoustical performance similar to that of conventional displacement systems and are designed speci�cally for operation in North American climates. The units are �tted with a series of air injection nozzles which allow the supply of primary air to the terminals at conventional temperatures (50 to 55°F). These nozzles induce room air through a heat transfer (cooling and/or heating) coil to recondition the air prior to mixing with primary jets. The result is a constant volume (variable temperature) displacement supply of air to the classroom.
Displacement conditioning provides several advantages over mixed air systems in classroom applications:– Enhanced ventilation e�ectiveness– More e�cient removal of respiratory contaminants– Reduced space noise levels– Lower fan operation costs due to reduced outlet pressure and air�ow requirements– Increased economizer opportunities and chiller e�ciencies
Bene�ts of displacement ventilation
1 Primary air inlet2 Threaded coil �tting3 Water coil4 Perforated equalizing grill
5 Drain pan with piping connections6 Removable face panels7 Rugged cabinet
13 ½" or 16 "
""
Schematic illustration of the QLCI displacement chilled beam
GENERAL INFORMATION AND FUNCTIONAL DESCRIPTION
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Primary AirSupply(50° to 52°)
Chilled Water Return Induced
Room Air(73° to 76°)
Supply Airto Room(62° to 68° F)
Cooling mode Heating mode
Primary AirSupply(55°F to 68°F)
Hot Water Return Induced
Room Air(70° to 74°)
Supply Airto Room(68°F to 72°F)
Optional rear heat mode
Primary AirSupply(55° to 68°)
Hot Water Return
InducedRoom Air(70° to 74°)
Supply Airto Room(65° to 70° F)
Number of units ducted in series
1 1.5 2 3
80 240 0.15 <15 0.17 <15 0.20 <15 0.29 19
100 300 0.23 <15 0.26 17 0.31 21 0.46 25
120 360 0.33 20 0.38 22 0.45 27 0.66 31
140 420 0.45 24 0.51 27 0.61 31 0.89 35
160 480 0.58 28 0.67 30 0.80 35 1.17 39
80 240 0.13 <15 0.14 <15 0.15 <15 0.18 19
100 300 0.21 <15 0.22 17 0.23 21 0.28 25
120 360 0.30 20 0.32 22 0.34 27 0.40 31
140 420 0.41 24 0.43 27 0.46 31 0.55 35
160 480 0.53 28 0.56 30 0.60 35 0.72 39
100 300 0.14 <15 0.17 16 0.22 20 0.37 24
120 360 0.20 18 0.25 21 0.32 25 0.53 29
140 420 0.27 23 0.34 25 0.43 30 0.72 34
160 480 0.35 27 0.44 29 0.56 34 0.94 38
180 540 0.44 30 0.56 33 0.71 37 1.18 41
100 300 0.12 <15 0.13 16 0.14 20 0.19 24
120 360 0.17 18 0.19 21 0.21 25 0.27 29
140 420 0.23 23 0.25 25 0.28 30 0.37 34
160 480 0.27 27 0.33 29 0.37 34 0.48 38
180 540 0.30 30 0.42 33 0.47 37 0.61 41
INSTALLATION
Space NClevel
Airside pressure drop
Space NC level
Airside pressure drop
Space NClevel
Airside pressure drop
Space NClevel
Airside pressure drop
Primary air�ow rate
Supply air�ow rate
Size 1500 with 6” inlet and connections
Space NClevel
Airside pressure drop
Space NC level
Airside pressure drop
Space NClevel
Airside pressure drop
Space NClevel
Airside pressure drop
Primary air�ow rate
Supply air�ow rate
1 1.5 2 3
Number of units ducted in seriesSize 1500 with 8” inlet and connections
Space NClevel
Airside pressure drop
Space NC level
Airside pressure drop
Space NClevel
Airside pressure drop
Space NClevel
Airside pressure drop
Primary air�ow rate
Supply air�ow rate
1 1.5 2 3
Number of units ducted in seriesSize 2000 with 6” inlet and connections
Size 2000 with 8” inlet and connections 1 1.5 2 3
Number of units ducted in series
PRINCIPLE OF OPERATION
QLCI terminals are designed to a�ord easy installation and easy access for maintenance. Most classroom installations will require QLCI terminals be installed along 75 to 80% of their external exposure to provide adequate space
conditioning and ventilation at noise levels compliant with ANSI S12.60.
See Installation, Operation & Maintenance Manual for complete installation instructions.
Chilled Water Supply
Hot Water Supply
Hot Water Supply
OPERATION, INSTALLATION NOTES AND PERFORMANCE DATA
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Performance data
QUICK SIZING
Size
Primary AirFlow Rate
CFM GPM Qtot1
(Btu/h) (Btu/h)∆pw
3
(Btu/h)∆pw
(Btu/h)∆pw
1500
80
0.500.751.001.50
2928308131713268
1187134014291526
0.92.13.78.4
2495265927412820
0.30.71.22.8
3132336134723579
0.92.13.78.4
100
0.500.751.001.50
3655386139844119
1478168418071942
0.92.13.78.4
3000321833293439
0.30.71.22.8
3890421643804542
0.92.13.78.4
120
0.500.751.001.50
4313456447154884
1700195121032272
0.92.13.78.4
3396366137993937
0.30.71.22.8
4472488450965311
0.92.13.78.4
140
0.500.751.001.50
4926521653935592
1878216823452544
0.92.13.78.4
3720402841894353
0.30.71.22.8
4939542856845947
0.92.13.78.4
160
0.500.751.001.50
5509583260326258
2026234925492775
0.92.13.78.4
3993433845214709
0.30.71.22.8
5327588561816490
0.92.13.78.4
2000
100
0.500.751.001.50
3389354636393738
1212136914621561
1.22.74.8
10.8
2608278328712957
0.40.91.63.6
3207344535603672
1.22.74.8
10.8
120
0.500.751.001.50
4096430344264562
1483169018141950
1.22.74.8
10.8
3076330334193534
0.40.91.63.6
3913424244074572
1.22.74.8
10.8
140
0.500.751.001.50
4746499751485317
1698194921002269
1.22.74.8
10.8
3457373038724014
0.40.91.63.6
4475488751005315
1.22.74.8
10.8
160
0.500.751.001.50
5358564758236022
1875216423402539
1.22.74.8
10.8
3777409242574426
0.40.91.63.6
4938542656835946
1.22.74.8
10.8
180
0.500.751.001.50
5942626564656691
2024234725462772
1.22.74.8
10.8
4051440445924784
0.40.91.63.6
530588761856493
1.22.74.8
10.8
Reference values - Coolingr
tR 75°F tPr 55°FtCWS 57°F
Reference values - Heating
tR 70°F tHWS 120°F
(ft. H20) (ft. H20) (ft. H20)Qcw
2 QHW4 QHW
4
Water FlowRate
CoolingFour-pipe or Two-pipe system
HeatingFour-pipe System
HeatingTwo-pipe System
PERFORMANCE NOTES
QUICK SELECTION TABLE
1 Qtot includes QCW plus sensible cooling provided by primary air 20°F below room temperature at the �ow rate indicated.
2 QCW is coil sensible cooling using chilled water supplied 18°F below the room temperature.
3 ∆pw is the water head loss at the referenced water supply �ow rate.
4 QHW is coil sensible heating using hot water supplied at 50°F above the room temperature.
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DIMENSIONS
Dimensions [in]
W WLN L w/out heater w/heater
1500 13 ½" or 16 " 16 "
2000 13 ½" or 16 " 16 "
QLCI Dimensional Data
W
30”
3”
Bookstop ½”(unit w/rear heat only)
Front view cabinet
Vents only on units with rear heater
Entering watertemperature
Entering air temperature
55 60 65 70 75 80
100 275 233 194 156 121 89
110 363 318 275 233 194 156
120 459 410 363 318 275 233
130 560 508 459 410 363 318
140 666 612 560 508 459 410
150 778 721 666 612 560 508
160 894 835 778 721 666 612
170 1014 954 894 835 778 721
180 1139 1076 1014 954 894 835
REAR HEATING CAPACITY
GPM 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Factor 0.853 0.915 0.944 0.962 0.975 0.985 0.933
Fin tube BTUH/LF at 4.0 GPM
Top View Cabinet with heater (see p7 for other views)
Multiplier for water �ow rates less than 4.0 GPM
PERFORMANCE DATA AND DIMENSIONS
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Side ViewDIMENSIONS Top View
AIR AND WATER CONNECTIONS
Arrangement of heat exchanger and water connections
W = 13½" = Standard unitW = 16⅝" = Unit with heater
X = 8 ⅜″ if water connection is on opposite sideX = 10 ⅝″ if water connection is on same side
(see casing arrangement detail below for units with top cut-outs)
DIMENSIONS AND CASING ARRANGEMENTS
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QLCI-RE
QLCI-REN QLCI-RT
QLCI-REX
QLCI-RTN QLCI-RTXN
QLCI-RX QLCI-RX
AIR AND WATER CONNECTIONS
Arrangement of heat exchanger and water connections
CASING ARRANGEMENTS
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QLCI-RXX QLCI-RXP
QLCI-RZS QLCI-RZSX
QLCI-CS QLCI-CSX
QLCI-LE QLCI-LEX
QLCI-LTN
QLCI-LT
AIR AND WATER CONNECTIONS
Arrangement of heat exchanger and water connections
CASING ARRANGEMENTS
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QLCI-LZS QLCI-LZSX
QLCI-LXX QLCI-LXN
QLCI-LX
QLCI-LTN QLCI-LTXN
QLCI-LXN
DESCRIPTION
This speci�cation text describes the general properties of the product. Contact Carson Solutions for texts for QLCI variants.
Furnish and install QLCI, designed by TROX® displacement terminals in the models, sizes and con�gurations on plans and schedules.
SPECIAL FEATURES– Active chilled beam for mounting under window– Guaranteed space ventilation– Compliant with ANSI S12.60 requirements– Integral cooling and heating coil– Vertical coil allows provision of gravity drain condensate tray– Rugged construction for K-12 applications– Low cost of operation– Ideal for new and retro�t construction
MATERIALS AND SURFACES– Cabinet constructed of 16ga steel– Internal components constructed of 20ga galvanized steel (un�nished)
– External surfaces �nished in textured powder coat paint in one of four (4) standard RAL colors as selected by architect or a custom color (cost option)– Finish is textured to hide small scratches and �ngerprints– Face panels shall be louvered(standard) or perforated
TECHNICAL DATA– Nominal length: 1500, 2000 mm– Length: 67 ¾ in, 87 in– Width: 13 ½ in, 16 in– Height: 30 in– Primary air volume �ow rate: 60-180 CFM– Cooling capacity: up to 6800 btu/h– Heating capacity: up to 4500 btu/h
SPECIFICATION TEXT
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ORDER CODE
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