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background image

H

OT

W

ATER

C

OIL

D

ATA

• CFR

©December, 2005 Environmental Technologies, Inc.

• CFR Catalog

23

The ENVIRO-TEC

®

Windows

®

based Computer Selection Program is available through your ENVIRO-TEC

®

representative for complete CFR

selection and hot water coil performance data.

Model CFR-WC

Standard Features

• Designed, manufactured and tested by ENVIRO-TEC

®

• Aluminum fin construction with die-formed spacer

collars for uniform spacing

• Mechanically expanded copper tubes, leak tested to

450 PSIG air pressure and rated at 300 PSIG

working pressure at 200°F

• 1, 2, 3 and 4 row configurations

• Male sweat type water connections

• Top and bottom access plates in coil casing for fan

sizes 04 through 24. Coil access through bottom

casing panel for fan sizes 30, 40 and 44.

Optional Features

• Steam coils

• Multi-circuit coils for reduced water pressure drop

• Opposite hand water connections

Definition of Terms

EAT

Entering Air Temperature (°F)

LAT

Leaving Air Temperature (°F)

EWT

Entering Water Temperature (°F)

LWT

Leaving Water Temperature (°F)

CFM

Air Capacity (Cubic Feet per Minute)

GPM

Water Capacity (Gallons per Minute)

MBH

1,000 BTUH

BTUH

Coil Heating Capacity

(British Thermal Units per Hour)

ΔΔ

T

EWT minus EAT

Selection Procedure

Hot Water Coil Performance Tables are based upon a tem-

perature difference of 115°F between entering water and

entering air. If this

Δ

T is suitable, proceed directly to the

performance tables for selection. All pertinent perfor-

mance data is tabulated.

The table above gives correction factors for various entering

Δ

T’s (difference between entering water and entering air tempera-

tures). Multiply MBH values obtained from selection tables by the appropriate correction factor above to obtain the actual MBH
value. Air and water pressure drop can be read directly from the selection table. The leaving air and leaving water temperatures
can be calculated from the following fundamental formulas:

LAT = EAT + BTUH

LWT = EWT - BTUH

1.085 x CFM

500 x GPM

ΔΔ

T

10

15

20

25

30

35

40

45

50

55

60

65

70

75

80

FACTOR

0.15 0.19 0.23 0.27 0.31 0.35 0.39 0.43 0.47 0.51 0.55 0.59 0.63 0.67 0.71

ΔΔ

T

85

90

95

100

105

110

115

120

125

130

135

140

145

150

155

FACTOR

0.75 0.79 0.83 0.88 0.92 0.96 1.00 1.04 1.08 1.13 1.17 1.21 1.25 1.29 1.33

ENTERING WATER - AIR TEMPERATURE DIFFERENTIAL (

Δ

T) CORRECTION FACTORS

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Summary of Contents for CFR

Page 1: ...December 2005 Part No PX 00 0005 ...

Page 2: ...ly dominate the space sound level The CFR also minimizes the fluctuation in sound levels that occur during VAV damper modu lation For the Building Designer F L E X I B I L I T Y Selection and Layout The CFR pro vides flexibility in system design Reduced noise at the fan terminal allows the system designer to place properly sized units directly above occupied spaces It is not neces sary to use the ...

Page 3: ...oil shape provides minimal pressure drop across the terminal This allows the central fan to run at a lower pres sure and with less brake horsepower Energy efficient three tap three winding permanent split capaci tor fan motors are manufactured to ensure efficient quiet reliable and low maintenance operation Three tap motors provide superi or energy efficiency over single speed motors by delivering...

Page 4: ... skin dual density insulation complying with UL 181 and NFPA 90A Fan assembly utilizes a forward curved dynamically balanced galvanized wheel with a direct drive motor Electrical devices installed within a NEMA 1enclosure with single point power connection Optional Construction Features ECM fan motor Mounting brackets to accept all thread hanging rods or wire hangers Double wall construction Scrim...

Page 5: ...ould have minimum CFM s that are well over 50 higher than an ENVIRO TEC terminal Many air flow sensors provide some degree of amplification simply due to the decrease in free area of the inlet from large area of the sensor These VAV terminals still require minimum CFM s up to 30 high er than an ENVIRO TEC terminal have higher sound levels and higher pressure drop requiring additional energy consum...

Page 6: ...nstalled This allows a straight for ward comparison of sound performance between equipment manufacturers and unit models Noise Criteria NC The bottom line acoustical criteria for most projects is the NC Noise Criteria level This NC level is derived from resulting sound pressure levels in the zone These sound pressure lev els are the effect of acoustical energy sound power levels entering the zone ...

Page 7: ... more optimally sized units Inlet duct that is the same size as the inlet collar and as straight as pos sible will achieve the best acoustical performance For critical applica tions flexible duct should not be utilized at the terminal inlet Zoning On projects where inter nal lining of the downstream duct is not permitted special consider ations should be made to assure acceptable noise levels will...

Page 8: ...ize that is matched with the unit fan to deliver 100 cooling capacity for the majority of fan selec tions The larger primary air valve will be used in applications where the system fan is undersized requiring a larger air valve to take advantage of lower pressure losses While help ing in this fashion a penalty is paid by having a higher controllable min imum airflow setpoint than could be achieved...

Page 9: ...re in w g Max transducer differential pressure in w g Airflow Ranges CFM 1 Minimum and maximum airflow limits are dependent on the specific DDC controller supplied Contact the control vendor to obtain the minimum and maximum differential pressure limits inches W G of the transducer utilized with the DDC controller 2 Maximum CFM is limited to value shown in General Selection Data FlowStar Calibrati...

Page 10: ... 15 381 13 1 2 343 29 3 8 746 17 432 40 1016 1218 11 7 8 302 8 203 2 1 4 57 3 4 19 6 1 2 165 15 381 13 1 2 343 29 3 8 746 17 432 40 1016 1021 9 7 8 251 8 203 2 1 4 57 3 4 19 6 1 2 165 15 381 13 1 2 343 29 3 8 746 17 432 40 1016 1221 11 7 8 302 8 203 2 1 4 57 3 4 19 6 1 2 165 15 381 13 1 2 343 29 3 8 746 17 432 40 1016 1421 13 7 8 352 9 229 2 1 4 57 3 4 19 6 1 2 165 15 381 13 1 2 343 29 3 8 746 17 ...

Page 11: ... K M 04 10 254 12 305 10 254 3 76 06 11 10 254 16 406 12 1 2 318 1 2 13 18 21 10 254 22 559 12 1 2 318 1 2 13 24 10 254 28 711 17 1 2 445 1 2 13 30 40 6 152 40 1016 17 1 2 445 9 3 4 248 44 6 152 44 1118 17 1 2 445 5 3 4 146 Fan Sizes 04 06 11 18 21 and 24 NOTE All dimensions are in inches mm Drawings are not to scale and not for submittal or installation purposes Refer to www enviro tec com for cu...

Page 12: ... 27 30 36 800 0 19 0 90 31 32 39 1000 0 30 0 88 23 35 36 42 600 0 02 0 90 26 28 38 800 0 04 0 90 27 31 39 1000 0 06 0 88 23 30 33 40 1200 0 08 0 82 26 33 36 43 1400 0 11 0 75 30 38 40 46 1600 0 15 0 59 33 41 43 48 800 0 02 0 90 30 32 40 1000 0 03 0 88 23 32 36 41 1200 0 05 0 82 26 36 39 43 1400 0 06 0 75 30 39 41 46 1600 0 07 0 59 33 42 45 50 1800 0 09 0 40 35 45 47 51 800 0 06 0 90 26 31 38 1000 ...

Page 13: ...E 1224 1424 1230 1844 17 8 1 0 2 3 4 2 1 2 2 277V FAN HP 9 0 7 6 6 8 24 6 22 0 3 4 2 18 8 1 3 2 HORSEPOWER AMPERAGE DATA 21 0 7 2 7 4 8 6 AMPERAGE 115V 1 3 2 1 4 2 208V 1 2 2 19 2 18 6 17 6 1 2 2 20 6 1440 1640 1644 1844 1630 1224 1424 1230 1430 INLET Δ ΔPs MIN ΔPs IN W G RADIATED UNIT SIZE CFM MAX E S P IN W G ROOM NOISE CRITERIA NC FAN ONLY 4 5 7 2 5 8 5 6 11 0 12 3 3 4 3 8 1 8 2 8 5 3 1 2 3 4 1...

Page 14: ... 65 57 51 49 400 59 53 52 46 43 41 59 55 50 44 33 29 61 58 54 46 40 37 65 62 60 54 49 47 500 61 55 55 50 48 47 62 59 54 48 38 33 63 62 58 49 42 39 68 65 62 56 50 48 400 59 53 52 46 43 41 56 52 46 38 32 32 58 55 50 43 37 37 62 59 58 53 47 47 500 61 55 55 50 48 47 58 55 48 40 33 33 61 58 52 45 39 38 65 62 60 55 48 48 600 63 57 59 54 52 52 60 58 51 43 35 35 63 61 54 47 40 39 67 65 62 56 49 49 800 66 ...

Page 15: ...0 68 69 65 61 61 61 69 66 57 50 42 38 71 67 59 51 43 39 77 71 66 56 46 43 2700 71 71 69 65 65 65 72 69 60 53 45 41 74 69 62 54 48 44 79 73 67 58 51 48 3100 74 74 72 70 70 70 76 71 63 56 49 46 76 72 64 57 50 46 82 76 69 60 53 50 1500 62 63 57 52 52 49 62 60 49 42 34 31 64 61 52 45 40 37 72 67 62 53 49 48 1900 65 66 62 57 57 56 67 62 54 46 35 32 69 64 56 48 42 38 74 69 63 54 50 49 2300 68 69 65 61 6...

Page 16: ...it fan should not be energized prior to realizing this minimum external static pressure NOTE Terminals equipped with a hot water heating coil require the addition of the coil pressure drop to the specified external static pressure before making the fan selection UNIT SIZES 0506 0606 0806 UNIT SIZES 0611 0811 1011 E S P IN W G E S P IN W G Airflow CFM Standard Density Air Airflow CFM Standard Densi...

Page 17: ... 5 0 6 0 7 0 8 0 9 1 0 1 1 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 4400 4600 4800 HI TAP MED TAP LOW TAP UNIT SIZES 1644 1844 E S P IN W G Airflow CFM Standard Density Air 0 0 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 1 0 1600 1800 2000 2200 2400 2600 2800 3000 3200 3400 3600 3800 4000 4200 HI TAP MED TAP LOW TAP UNIT SIZES 1440 1640 E S P IN W G Airflow CFM Standard Density Air 0 0 0 1 0 2 0 ...

Page 18: ... the varying static pressure requirements associated with different downstream duct configurations This feature should not preclude the final field air balance verification process during the commissioning stage of a project An electronic PWM speed control device is provided to allow field changes of the fan capacity as the need arises Fan volume can be field calibrated in two fashions First a pot...

Page 19: ...her the current is drawn in pulses at the peaks of the AC voltage This pul sating current includes high frequency components called harmonics Harmonic currents circulate on the delta side of a Delta Wye distribution transformer On the Wye side of the transformer these harmonic currents are additive on the neutral conductor A transformer used in this type of appli cation must be sized to carry the ...

Page 20: ...ly be made in the non shaded areas The minimum external static pressure requirement is shown for each fan assembly The unit fan should not be energized prior to realizing this minimum external static pres sure Terminals equipped with a hot water heating coil require the addition of the coil pressure drop to the specified external static pressure before making the fan selection UNIT SIZES 0611 0811...

Page 21: ...6 55 77 75 74 75 73 73 1221 1600 2100 1055 0 07 0 10 73 69 62 57 52 52 80 78 69 61 56 55 77 75 74 75 73 73 1421 2100 2100 1055 0 14 0 10 73 69 62 57 52 52 80 78 69 61 56 55 77 75 74 75 73 73 1224 1600 2600 1060 0 08 0 20 74 72 64 58 55 55 80 80 70 62 56 53 80 77 75 77 75 74 1424 2100 2600 1060 0 11 0 20 74 72 64 58 55 55 80 80 70 62 56 53 80 77 75 77 75 74 1230 1600 2800 960 0 07 0 20 72 69 61 55 ...

Page 22: ...umber of steps etc Contact your ENVIRO TEC representative or refer to the ENVIRO TEC Windows based computer selection program for design assistance Heaters require a minimum of 0 07 w g downstream static pressure to ensure proper operation For optimum diffuser performance in overhead heating applications the supply air temperature should be with in 20 F of the desired space temperature This typica...

Page 23: ...nute GPM Water Capacity Gallons per Minute MBH 1 000 BTUH BTUH Coil Heating Capacity British Thermal Units per Hour Δ ΔT EWT minus EAT Selection Procedure Hot Water Coil Performance Tables are based upon a tem perature difference of 115 F between entering water and entering air If this ΔT is suitable proceed directly to the performance tables for selection All pertinent perfor mance data is tabula...

Page 24: ... 5 149 2 136 2 7 5 10 7 1 1 0 0 3 105 2 125 1 162 1 153 3 8 7 13 0 2 3 5 1 0 108 9 132 2 170 2 165 1 9 5 14 6 3 7 5 2 1 110 3 135 0 173 3 169 6 9 8 15 2 4 12 7 3 5 111 0 136 5 174 9 172 0 10 0 15 5 5 5 3 137 4 173 5 15 7 0 5 0 3 0 1 95 4 108 2 146 3 132 3 8 2 11 7 1 1 0 0 3 100 9 118 8 160 1 150 1 9 7 14 6 2 3 5 1 0 104 5 126 3 169 0 163 0 10 7 16 6 3 7 5 2 1 106 0 129 3 172 4 168 1 11 1 17 4 4 12...

Page 25: ...31 2 4 15 5 4 4 102 7 124 8 169 5 163 4 20 4 32 4 5 6 6 126 2 166 4 33 1 0 5 0 4 0 1 86 2 93 3 123 7 105 3 13 8 18 4 1 1 2 0 4 92 2 104 6 143 8 127 5 17 7 25 7 2 4 4 1 2 96 6 113 9 158 9 147 5 20 6 31 8 3 9 2 2 6 98 5 117 9 165 1 156 5 21 7 34 4 4 15 5 4 4 99 5 120 2 168 5 161 6 22 4 35 9 5 6 6 121 6 164 9 36 8 0 5 0 4 0 1 84 0 90 1 121 2 102 8 14 4 19 0 1 1 2 0 4 89 7 100 8 141 7 124 7 18 7 27 1 ...

Page 26: ... 7 143 7 125 7 35 5 53 2 3 10 3 2 9 87 5 100 2 153 4 138 5 38 9 61 0 4 17 4 4 9 88 6 102 9 159 0 146 4 40 9 65 7 5 7 4 104 7 151 8 68 8 0 5 0 4 0 1 75 2 77 3 99 0 82 8 19 9 24 0 1 1 4 0 4 79 8 85 0 121 0 100 9 28 9 38 9 2 4 9 1 4 84 0 93 3 142 2 123 7 37 0 55 2 3 10 3 2 9 85 9 97 7 152 2 136 6 40 8 63 7 4 17 4 4 9 87 0 100 3 158 0 144 8 42 9 68 9 5 7 4 102 1 150 3 72 4 0 5 0 4 0 1 74 4 76 2 97 7 8...

Page 27: ...112 3 147 7 131 2 47 3 71 7 4 24 5 7 0 97 8 115 9 154 5 140 6 49 8 77 2 5 10 5 118 3 146 9 80 8 0 5 0 6 0 2 78 3 80 2 86 7 73 1 23 0 26 4 1 2 0 0 6 85 0 90 9 109 6 89 0 34 6 44 9 2 7 1 2 0 91 1 102 7 133 8 113 5 45 2 65 4 3 14 6 4 2 93 9 108 8 145 8 128 4 50 1 75 9 4 24 5 7 0 95 6 112 4 152 9 138 0 53 0 82 2 5 10 5 114 8 144 7 86 3 0 5 0 6 0 2 77 0 78 7 85 1 72 2 23 4 26 6 1 2 0 0 6 83 3 88 5 107 ...

Page 28: ... 2 89 3 100 3 131 6 110 0 71 1 103 2 4 29 9 8 6 91 3 104 5 140 8 121 1 76 8 115 5 5 12 8 107 4 129 4 124 1 0 5 0 7 0 1 73 4 73 9 73 6 66 8 26 3 28 0 1 2 5 0 7 79 0 81 6 90 8 74 5 44 0 52 1 2 8 7 2 5 85 1 92 2 115 7 93 4 63 1 85 4 3 17 9 5 2 88 2 98 6 130 3 108 5 73 0 105 5 4 29 9 8 6 90 2 102 8 139 6 119 6 79 0 118 6 5 12 8 105 7 127 9 127 8 0 5 0 7 0 1 72 4 72 8 72 6 66 5 26 5 28 1 1 2 6 0 7 77 6...

Page 29: ... 7 136 3 5 13 8 99 4 119 3 149 0 0 5 0 8 0 1 70 7 70 9 69 8 65 8 27 3 28 3 1 2 7 0 8 75 1 76 4 82 8 70 2 48 0 54 3 2 9 3 2 7 80 3 84 8 105 7 84 3 73 1 94 4 3 19 2 5 6 83 3 90 5 120 9 97 8 87 1 121 5 4 32 1 9 3 85 1 94 4 131 1 108 7 95 9 140 3 5 13 9 97 3 117 3 153 9 0 5 0 8 0 1 70 5 70 7 69 5 65 7 27 3 28 3 1 2 7 0 8 74 7 75 9 82 2 69 9 48 3 54 4 2 9 4 2 7 79 8 84 1 104 9 83 7 73 9 95 1 3 19 2 5 6...

Page 30: ...ctured of a low thermal conducting composite mate rial and include a molded damper position indicator visible from the exterior of the unit The damper shall pivot in self lubricating bearings The damper actuator shall be mounted on the exterior of the terminal for ease of service The valve assembly shall include internal mechanical stops for both full open and closed positions The damper blade sea...

Page 31: ...ently lubricated ball bearings Motor shall maintain minimum 70 efficiency over the entire operating range Motor speed control shall be accomplished through a PWM pulse width modulation controller specifi cally designed for compatibility with the ECM The speed controller shall have terminals for field verification of fan capacity utilizing a digital volt meter A calibration graph shall be supplied ...

Page 32: ...liance NEMA 1 wiring enclosure Electric Heat ETL listed as an assembly for safety compliance per UL 1995 Integral electric heat assembly Automatic reset primary and back up secondary thermal limits Single point power connection Hinged electrical enclosure door Fusing per NEC OPTIONAL FEATURES Construction 20 gauge galvanized steel construction 1 insulation Foil faced scrim backed insulation Double...

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