VAVFC by Jimmy Wong

RSV VAV FAN COIL UNITS

■Horizontal VAV Fan Coil Units ■Design & Application Flexibility ■High Efficient Energy Saving ■Lower Operating Noise

ROYAL SERVICE GROUP www.royalservice.com

Features and Benefits ■Saving Energy Terminal Unit RSV VFC series horizontal VAV fan coil unit are variable or constant airflow air terminals as needed, this series unit offers an alternative to the PSC motor that significantly increases the operating efficiency of fan coil units, so the unit’s airflow could be available variable whose is called variable airflow fan coil units.

■Pressure Independent Control Fan Volume The integral microprocessor based controller includes a feature that provides sensorless constant airflow operation by automatically adjusting the speed and torque in response to system pressure changes. There is different from traditional SPC motor when unit airflow is decrease and external pressure is crease. This advantage will be no doubt to have far reaching benefits and endless applications.

■Factory Calibrated Fan Variable/Constant Volume The fan volume is calibrated in advance at the factory. Pressure independent feature provides the precision of fan airflow is less than ±5%—The fan could be setup fan volume to maintain constant airflow by adjusting torque and speed at factory according to owner requirement.

■Extended Applications Control solutions are electronic and DDC of a DC motor combined with an integral microprocessor. Various input signals can directly drive the motor to behave in an application specific mode. In addition, the unit is available for dangerous site because of brushless not to produce electric fire. The fan is also programmed for a soft start to decrease starting current and sound.

Specifications ■General RSV VFC series VAV fan coil units shall be completely factory assembled, tested and shipped as one piece. All units shall be capable of meeting or exceeding the scheduled capacities for cooling, heating and air delivery.

■Casing The VFC series units have rigid structure and perfect appearance, which are made of galvanized steel, and have good anticorrosive and antirust feature. All concealed units shall have a 1” duct collar on the outlet. Units shall be mounted by 4 hanger holes provided at four locations.

■Insulation For standard units, the VFC series units have 0.12”(3mm) form insulation inlined, and for double casing units, 0.5”(12.7mm) fiber glass insulation inlined.

■Fan and Motor Fans are forwardly curved, DWDI centrifugal type constructed of galvanized steel for corrosion resistance. All fans are to be tested statically and dynamically balanced after manufacture, thus achieve lower noise level and vibration. Fans are airflow balanced with motor. Motors are directly driven by ECM motor which is a brushless DC motor utilizing a permanent magnet rotor. Fan speed control is accomplished through a microprocessor based variable speed controller integral to the motor, peak efficiency ratings between 70 to 80% within whole operating range, DC motors are significantly more efficient than AC motors. Supply power is 220V/1ph/50Hz, 208-230V/1ph/60Hz or 120V/1ph/60Hz. The fan assembly shall be easily removable for servicing the motor and blower at, or away from the unit.

■Coils All coils are constructed of seamless copper tubes and aluminum fins and shall be mechanically expanded to provide an efficient, permanent bond between the tube and fins. Fins shall be have high efficiency aluminum surface optimized for heat transfer, air pressure drop and carryover. Φ3/8”(Φ9.52mm) copper tubes and 0.095”(2.4mm) fin space are standard. All coils shall be hydrostatically tested at 350 PSI(2.5MPa) pressure under water, and rated for a maximum of 280PSI(2.0MPa) working pressure. All coils shall be provided with a manual air vent fitting to allow for coil venting. Automatic air vents are optional.

■Drain Pans Condensate drain pans shall be single wall, heavy gauge galvanized steel for corrosion resistance which surface is being to spray paint. The drain pans extend under the entire cooling coil and shall be externally insulated with a fire retardant, foam insulation.

■Filter The filter shall be metal washable, pleated filter which is all aluminum construction, coarse efficiency.

■Mixing Box Provide a fully insulated integral mixing box with return and fresh air. Mixing box shall be shipped attached to the concealed plenum unit as an assembly.

■Electric Heater (Optional) The heater elements are PTC type located down stream and in series with the fan. Safety features include standard 165℃(3320F) fusers and 135℃(2770F) automatic and manual reset thermal cutouts.

■Terminal Controller & Thermostat RSV-VFC has a standard stand alone controller, and digital display room sensor. Optional network communications controllers are lonworks, bacnet, and other independent networks. With a wide range availed for stand alone, or networked to the Building Automation systems.

Unit Arrangements ■Standard Units(with Three Rows Coil)

Plenum

Free Return Air (Standard Unit)

Rear Return Air

Filter

Plenum

Rear Return Air With Filter

Bottom Return Air Mixing Box

Plenum

Filter

Plenum

Filter

Bottom & Rear Return Air With Mixing Box

Bottom Return Air With Filter

■Cabinet Casing Units

Rear Return Air

Bottom Return Air

Bottom Return Air & Rear Fresh Air With Mixing Box

Model Description 1

RSV-VFC-S-XXX- 3 - L - E /FR 1

RSV VAV Fan Coil Unit S-- Standard Unit

D--Cabinet Casing Unit

Nominal Airflow(CFM) 3-- Three Rows Coil (Standard)

4-- Four Rows Coil (Optional) L-- Left Unit

R--Right Unit E-- Electric Heater

N--No Heater FR--Free Return Air RR--Rear Return Air BR--Bottom Return Air

RRF-- Rear Return Air with Filter BRF-- Bottom Return Air with Filter BRM-- Bottom & Rear Return Air with Mixing Box

Note： Left unit definition: Facing to unit air outlet, the inlet & outlet of coil are on the left. Otherwise, it is called right unit.

Performance Data RSV-VFC- RSV-VFC- RSV-VFC- RSV-VFC- RSV-VFC- RSV-VFC- RSV-VFC- RSV-VFC- RSV-VFCS-200-3 S-300-3 S-400-3 S-500-3 S-600-3 S-800-3 S-1000-3 S-1200-3 S-1400-3

Model Coil Nominal Airflow

Nominal Cooling Capacity

Rows

CFM

200

300

400

500

600

800

1000

1200

1400

CMH

350

550

710

850

1050

1360

1700

2020

2300

TH(BTUH)

6926

10508

14057

16581

19686

25520

31423

36506

41590

TH(W)

2030

3080

4120

4860

5770

7480

9210

10700

12190

SH(BTUH)

4811

7301

9758

11327

13715

17741

22211

26373

30092

SH(W)

1410

2140

2860

3320

4020

5200

6510

7730

8820

Nominal Heating Capacity

BTUH

10406

15753

21085

24360

29546

36992

46059

54759

62368

3050

4620

6180

7140

8660

10810

13500

16050

18280

Max. Sound Level

dB(A)

GPM

1.54

2.33

3.12

3.67

4.35

5.66

6.96

8.1

9.22

l/s

0.10

0.15

0.20

0.23

0.27

0.36

0.44

0.51

0.58

ft-wg

3.01

4.02

5.69

7.03

10.71

4.35

6.03

8.03

11.72

kPa

Nominal Water Flow Water Pressure Drop (Nominal Water Flow) Unit Weight

Pound

106

121

150

163

176

192

Note:1. Noise is measured in the suppressin room and taken at 1.0m from the unit surface. 2.Cooling Condition:Based on 80.6/67°F(27/19.5℃) EAT,44.6°F/7℃ EWT & 9°F/5℃ temperature drop. 3.Heating Condition:Based on 70°F/21℃ EAT,140°F/60℃ EWT. 4.TH stand for total heating capacity, and SH stand for sensible heating capacity. 5.The unit airflow,such as minimum & maximum airflow or constant airflow,which are calibrated in advance at the factory.

Motor and Fan Data Operating AMPs 0.12 In WG./30 Pa 0.2 WG In./50 Pa 0 In.WG/0 Pa EXP EXP EXP Model 120/1/60 240/1/50 120/1/60 240/1/50 120/1/60 240/1/50 HP W Qty. Qty. (V/Ph/Hz) (V/Ph/Hz) (V/Ph/Hz) (V/Ph/Hz) (V/Ph/Hz) (V/Ph/Hz) RSV-VFC-S/D-200-3 1/3 245 1 1 0.18 0.10 0.34 0.19 0.42 0.23 RSV-VFC-S/D-300-3 1/3 245 1 2 0.23 0.13 0.38 0.21 0.46 0.26 RSV-VFC-S/D-400-3 1/3 245 1 2 0.31 0.17 0.58 0.32 0.70 0.39 RSV-VFC-S/D-500-3 1/3 245 1 2 0.36 0.20 0.59 0.33 0.72 0.40 RSV-VFC-S/D-600-3 1/3 245 1 2 0.54 0.30 0.74 0.41 0.90 0.50 RSV-VFC-S/D-800-3 1/3 245 2 4 0.61 0.34 1.06 0.59 1.30 0.72 RSV-VFC-S/D-1000-3 1/3 245 2 4 1.06 0.59 1.26 0.7 1.54 0.85 RSV-VFC-S/D-1200-3 1/3 245 2 4 1.26 0.70 1.53 0.85 1.87 1.04 RSV-VFC-S/D-1400-3 1/3 245 2 4 1.48 0.82 1.64 0.91 2.00 1.11 Note:1. Motor HP is nameplate data, actual operating HP data will vary with application and be calculated according to operating AMPs. 2. Operating AMPs is operating current at nominal airflow. Motors

Fans

Dimensions â&#x2013; Standard Units Outlet(3/4" FPT)

210(8.26") Coil

265(10.43") 25(1")

46(1.81")

30(1.18") 224(8.82") 143(5.63")

Drain(3/4" MPT)

125(4.92")

238(9.37")

Inlet(3/4" FPT)

242(9.53")

Drain Pan

Free Return Air D B+20(0.79")

Hanger Holes 6-10X16(0.39"X0.63")

Plenum

Hanger Holes 6-10X16(0.39"X0.63") TB Box

213(8.38") 208(8.18")

TB Box

65(2.56") 30(1.18") 190(7.48")

190(7.48")

25(1") B C

30(1.18")

20(0.79") 35(1.38")

233(9.17") Plenum

B C

265(10.43") 25(1")

238(9.37") 170(6.69")

233(9.17") 46(1.81")

125(4.92")

Plenum

265(10.43") 25(1")

125(4.92")

238(9.37") 20(0.79")

242(9.53")

Rear Return Air

30(1.18")

46(1.81")

170(6.69")

242(9.53")

Bottom Return Air

Dimensions Model

inch

RSV-VFC-S-200-3

760

29.92

530

20.87

560

22.05

620

24.41

RSV-VFC-S-300-3

860

33.86

630

24.80

660

25.98

720

28.35

RSV-VFC-S-400-3

960

37.80

730

28.74

760

29.92

820

32.28

RSV-VFC-S-500-3

1060

41.73

830

32.68

860

33.86

920

36.22

RSV-VFC-S-600-3

1160

45.67

930

36.61

960

37.80

1020

40.16

RSV-VFC-S-800-3

1465

57.68

1240

48.82

1270

50.00

1330

52.36

RSV-VFC-S-1000-3

1595

62.80

1370

53.94

1400

55.12

1460

57.48

RSV-VFC-S-1200-3

1725

67.91

1500

59.06

1530

60.24

1590

62.60

RSV-VFC-S-1400-3

1855

73.03

1630

64.17

1660

65.35

1720

67.72

Outlet(DN20)

76(2.99")

■Cabinet Casing Units 80(3.14")

Hanger

Enclosure

143(5.63")

300(11.81")

50(1.96")

51(2")

Enclosure

190(7.48")

125(4.92")

Filter

Coil

Drain(DN20)

Access Door

44(1.73")

Inlet(DN20)

Outlet

Rear Return

Filter

12(0.47")

55(2.16")

D 4-?12(0.5")

Motor

Fan

Fan Enclosure

Inlet(DN20) Outlet(DN20)

425(16.73")

505(19.88") 100(3.94")

76(2.99")

125(4.92")

Outlet

30(1.18")

146(5.74")

190(7.48") Filter

Drain(DN20)

Bottom Return

Model

40(1.57") 60(2.36")

Outlet

25(1")

B A

inch

RSV-VFC-D-200-3

730

28.74

530

20.87

650

25.59

1.57

RSV-VFC-D-300-3

830

32.68

630

24.80

750

29.53

1.57

RSV-VFC-D-400-3

930

36.61

730

28.74

850

33.46

1.57

RSV-VFC-D-500-3

1030

40.55

830

32.68

950

37.40

1.57

RSV-VFC-D-600-3

1130

44.49

930

36.61

1050

41.34

1.57

RSV-VFC-D-800-3

1440

56.69

1240

48.82

1360

53.54

1.57

RSV-VFC-D-1000-3

1570

61.81

1370

53.94

1490

58.66

1.57

RSV-VFC-D-1200-3

1700

66.93

1500

59.06

1620

63.78

1.57

RSV-VFC-D-1400-3

1830

72.05

1630

64.17

1750

68.90

1.57

Note:If the unit’s coil is four rows, inlet and outlet’s dimension of coil may be different with drawing one.

RSV-VFC Operating Modes ■For RSV-VFC VAV fan coil unit, two control applications are available, application 1794 is variable preprogrammed or application 1795 variable fan controller operation. Application 1794, the thermostat controls to start the fan and operate the cooling coil valve on or off. Factory is programmed mode for ramping the fan on time according to demand. When the thermostat closes for cooling mode the fan starts and ramps the fan and operates the fan at a preset percentage for a period of time, and after this time the fan either operates 100% because of cooling demand or shuts down because the set point is reached. Application 1795 varies the fans flow according to cooling or heating demand. The cooling value modulates according to demand. DDC controller controls and modulates the fan and cooling and controls electrical optional heat for heating.

■For heating the terminal either maintains minimum air flow or programmed a set air flow. ■Network control intergradations system are available, lonworks and bacnet, others are dependent on the controller . ■Principle Drawing

Motor

Return Air

Fan

ECM Supply Air

Lonworks/Bacnet Com m unication W ire Control Board for Netw ork(Optional)

Control Board

Contact Tw o W ay Valve Relay

24VAC

Contact Override

Transform er

65° F M anual Reset

Therm ostat

Relay

1 2 3

220VAC

Correction Factor Cooling Capacity Correction Factor(Standard Coil) Inlet Water Temperature 5℃/41°F 6℃/42.8°F 7℃/44.6°F 8℃/46.4°F 9℃/48.2°F 0.85 0.76 0.66 0.57 0.49 22℃/71.6°F 0.92 0.83 0.74 0.65 0.56 23℃/73.4°F 0.98 0.89 0.8 0.71 0.62 24℃/75.2°F 1.06 0.97 0.88 0.79 0.7 25℃/77°F 1.14 1.05 0.96 0.87 0.78 26℃/78.8°F 1.21 1.12 1 0.94 0.85 27℃/80.6°F 1.27 1.18 1.09 0.99 0.91 28℃/82.4°F Note:Inlet air relatity humiduty is 50%. Inlet Air Temperature

10℃/50°F 0.4 0.47 0.53 0.61 0.69 0.76 0.82

Heating Capacity Correction Factor(Standard Coil) Inlet Water Temperature Inlet Air Temperature 40℃/104°F 45℃/113°F 50℃/122°F 55℃/131°F 60℃/140°F 65℃/149°F 70℃/158°F 0.62 0.75 0.87 1 1.13 1.26 16℃/60.8°F 1.39 0.59 0.72 0.85 0.98 1.1 1.23 17℃/62.6°F 1.36 0.57 0.69 0.82 0.95 1.08 1.21 18℃/64.4°F 1.33 0.54 0.67 0.8 0.92 1.05 1.18 19℃/66.2°F 1.31 0.51 0.64 0.77 0.9 1.03 1.16 20℃/68°F 1.28 0.49 0.62 0.75 0.87 1 1.13 21℃/69.8°F 1.26 0.46 0.59 0.72 0.85 0.98 1.1 22℃/71.6°F 1.23 0.44 0.57 0.69 0.82 0.95 1.08 23℃/73.4°F 1.21 0.41 0.54 0.67 0.8 0.92 1.05 24℃/75.2°F 1.18

Correction Factor of Total Cooling Capacity

1.2

1.0

0.8

0.6

0.4 0.4

0.6

0.8

1.0

Ratio Airflow (Actual Airflow : Naminal Airflow)

1.2

Correction Factor of Sensible Cooling & Heating Capacity

Cooling & Heating Capacity Correction Factor at Different Ratio Airflow (Standard Coil) 1.2

1.0

0.8

0.6

0.4 0.4

0.6

0.8

1.0

1.2

Ratio Airflow (Actual Airflow : Naminal Airflow)

Unit Airflow Curve (Standard Coil) Unit curves depict actual performance with three rows coil at the maximum speed of the ECM motor, unit airflow are achievable anywhere within the shadow area by adjusting the motor speed depending upon external static pressure.

RSV-VFC-S/D-300-3 120/0.48"

100/0.40"

E.S.P.(Pa/inch WG)

RSV-VFC-S/D-200-3 120/0.48"

80/0.32"

60/0.24"

40/0.16"

20/0.08"

0/0" 150/88

80/0.32"

60/0.24"

40/0.16"

20/0.08"

200/117

250/147

300/176

350/206

400/235

0/0" 200/118

450/264

300/176

Airflow(CMH/CFM)

100/0.40"

80/0.32"

60/0.24"

40/0.16"

20/0.08"

1100/647

1450/853

1650/971

40/0.16"

20/0.08"

400/235

500/294

600/353

700/412

800/471

0/0" 350/206

900/530

500/294

650/382

800/471

Airflow(CMH/CFM)

RSV-VFC-S/D-800-3

120/0.48"

100/0.40"

E.S.P.(Pa/inch WG)

950/559

60/0.24"

RSV-VFC-S/D-600-3

80/0.32"

60/0.24"

40/0.16"

20/0.08"

80/0.32"

60/0.24"

40/0.16"

20/0.08"

650/382

850/500

1050/618

0/0" 650/382

1250/736

850/500

Airflow(CMH/CFM)

1050/618

1250/736

Airflow(CMH/CFM)

RSV-VFC-S/D-1000-3

RSV-VFC-S/D-1200-3

120/0.48"

100/0.40"

E.S.P.(Pa/inch WG)

700/412

80/0.32"

Airflow(CMH/CFM)

80/0.32"

60/0.24"

40/0.16"

20/0.08"

0/0" 600/353

600/353

RSV-VFC-S/D-500-3 120/0.48"

E.S.P.(Pa/inch WG)

RSV-VFC-S/D-400-3

0/0" 450/265

500/294

Airflow(CMH/CFM)

120/0.48"

0/0" 300/176

400/235

80/0.32"

60/0.24"

40/0.16"

20/0.08"

900/530

1200/706

1500/883

Airflow(CMH/CFM)

1800/1059

2100/1236

0/0" 700/412

1000/588

1300/765

1600/942

1900/1118

Airflow(CMH/CFM)

2200/1295

2500/1471

120/0.48"

E.S.P.(Pa/inch WG)

100/0.40"

80/0.32"

60/0.24"

40/0.16"

20/0.08"

0/0" 900/530

1200/706

1500/883

1800/1059

2100/1236

Airflow(CMH/CFM)

2400/1412

2700/1589