Carrier 42BHC08 Product Data Download Page 17

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42BHC COMPONENT STATIC RESISTANCE (in. wg)

Hydronic coil pressure drop —

All of the factory’s hy-

dronic coils have a coefficient of velocity (Cv) resistance
factor assigned to assist in a more accurate determination
of water pressure drop (see Cv Factor by Coil and Unit Size
table below).
Calculating pressure drop:
The Cv factor is equal to the flow rate of water in gpm
through a piping component when the pressure drop
through the component is 1.0 pounds per square inch
(psi), or 2.31 ft wg.

∆

P (ft wg) =

∆

P (psi) x 2.31

Use the Cv factor from the Cv Factor by Coil and Unit Size
table to determine the water coil pressure drop.

Coil pressure drop (ft wg):

∆

P = (GPM

/Cv

) x 2.31

∆

P = [GPM/(0.658 x Cv)]

Refer to the Water Pressure Drop for Cv Factor and Water
Flow Rate table. See example on page 8.

Cv FACTOR BY COIL AND UNIT SIZE

UNIT

SIZE

NOMINAL

CFM

CABINET

WET COIL

DRY COIL

ONE-INCH

THROWAWAY

FILTER

ONE-INCH

PLEATED

FILTER

TWO-INCH

THROWAWAY

FILTER

TWO-INCH

PLEATED

FILTER

Row

600

0.04

0.18

0.27

0.36

0.02

0.04

0.08

0.13

0.17

0.02

0.08

0.04

0.06

700

0.06

0.25

0.37

0.50

0.03

0.06

0.12

0.17

0.23

0.03

0.10

0.06

0.08

800

0.08

0.32

0.49

0.65

0.04

0.08

0.15

0.23

0.30

0.04

0.14

0.08

0.11

900

0.10

0.41

0.61

0.82

0.05

0.10

0.19

0.29

0.38

0.05

0.17

0.10

0.14

1000

0.12

0.51

0.76

1.01

0.06

0.12

0.24

0.35

0.47

0.06

0.21

0.12

0.17

1000

0.06

0.24

0.36

0.48

0.03

0.06

0.11

0.17

0.22

0.03

0.11

0.06

0.09

1100

0.08

0.29

0.44

0.58

0.03

0.07

0.14

0.20

0.27

0.04

0.14

0.08

0.11

1200

0.09

0.35

0.52

0.69

0.04

0.08

0.16

0.24

0.32

0.05

0.16

0.09

0.13

1300

0.11

0.41

0.61

0.81

0.05

0.09

0.19

0.28

0.38

0.05

0.19

0.11

0.15

1400

0.13

0.47

0.71

0.94

0.05

0.11

0.22

0.33

0.44

0.06

0.22

0.13

0.17

1400

0.07

0.26

0.39

0.52

0.03

0.06

0.12

0.18

0.24

0.04

0.13

0.07

0.10

1500

0.09

0.30

0.45

0.60

0.03

0.07

0.14

0.21

0.28

0.04

0.15

0.09

0.12

1600

0.10

0.34

0.51

0.68

0.04

0.08

0.16

0.24

0.32

0.05

0.17

0.10

0.13

1700

0.11

0.38

0.58

0.77

0.04

0.09

0.18

0.27

0.36

0.06

0.19

0.11

0.15

1800

0.12

0.43

0.65

0.86

0.05

0.10

0.20

0.30

0.40

0.06

0.21

0.12

0.17

1800

0.12

0.30

0.45

0.60

0.03

0.07

0.14

0.21

0.28

0.04

0.13

0.08

0.10

1900

0.13

0.34

0.50

0.67

0.04

0.08

0.16

0.23

0.31

0.04

0.14

0.08

0.12

2000

0.14

0.37

0.56

0.74

0.04

0.09

0.17

0.26

0.35

0.05

0.16

0.09

0.13

2100

0.16

0.41

0.61

0.82

0.05

0.10

0.19

0.29

0.38

0.05

0.18

0.10

0.14

2200

0.17

0.45

0.67

0.90

0.05

0.10

0.21

0.31

0.42

0.06

0.19

0.11

0.16

2300

0.19

0.49

0.74

0.98

0.06

0.11

0.23

0.34

0.46

0.06

0.21

0.12

0.17

2400

0.21

0.54

0.80

1.07

0.06

0.12

0.25

0.37

0.50

0.07

0.23

0.13

0.19

2400

0.11

0.22

0.33

0.43

0.03

0.05

0.10

0.15

0.20

0.04

0.13

0.07

0.10

2600

0.13

0.25

0.38

0.51

0.03

0.06

0.12

0.18

0.24

0.04

0.15

0.09

0.12

2800

0.15

0.29

0.44

0.59

0.03

0.07

0.14

0.21

0.27

0.05

0.17

0.10

0.14

3000

0.18

0.34

0.51

0.68

0.04

0.08

0.16

0.24

0.31

0.06

0.20

0.12

0.16

3200

0.20

0.39

0.58

0.77

0.04

0.09

0.18

0.27

0.36

0.07

0.23

0.13

0.18

3400

0.23

0.43

0.65

0.87

0.05

0.10

0.20

0.30

0.40

0.07

0.25

0.15

0.20

3400

0.13

0.24

0.36

0.48

0.03

0.06

0.11

0.17

0.22

0.04

0.15

0.09

0.12

3600

0.15

0.27

0.40

0.54

0.03

0.06

0.12

0.19

0.25

0.05

0.16

0.10

0.13

3800

0.16

0.30

0.45

0.60

0.03

0.07

0.14

0.21

0.28

0.05

0.18

0.11

0.15

4000

0.18

0.33

0.50

0.66

0.04

0.08

0.15

0.23

0.31

0.06

0.20

0.12

0.16

4200

0.20

0.36

0.55

0.73

0.04

0.08

0.17

0.25

0.34

0.06

0.22

0.13

0.18

4400

0.22

0.40

0.60

0.80

0.05

0.09

0.19

0.28

0.37

0.07

0.25

0.14

0.20

COIL TYPE

42BHC

42BHC UNIT SIZE

1 Row Heat Only

1.4

1.3

1.2

0.8

0.7

2 Row Heat Only

2.4

2.2

2.0

1.9

1.6

1.4

4 Row Heat/Cool

4.7

4.4

7.2

6.8

13.2

12.4

6 Row Heat/Cool

4.0

3.7

6.1

5.8

11.4

10.5

8 Row Heat/Cool

3.6

3.3

5.3

5.1

9.8

9.0

Summary of Contents for 42BHC08

Page 1: ... 6 or 8 row cooling coils combine the capacities you need with the most efficient heat transfer surface For 4 pipe systems select either of two split coil options Coils consist of alu minum fins securely bonded to 1 2 in OD seamless copper tubes Each fin s aluminum collar ensures accurate con trol of the fin spacing while complete ly covering the tubes to lengthen coil life All coils also feature ...

Page 2: ...smission The stainless steel double sloped condensate drain pan extends under full coil surface to cut maintenance costs Slide in return duct collar filter makes it possible to remove and replace the filter without disturbing return air ductwork Coil Rows B 4 2 Pipe L 6 2 Pipe H 4 1 Same End Conn K 4 2 Same End Conn N 6 1 Same End Conn Q 6 2 Same End Conn R 8 2 Pipe 1 4 With Electric Heat 2 6 With...

Page 3: ...08 v 230 v and 277 v single phase 60 Hz 208 v 230 v and 480 v three phase 60 Hz Electric heat is available with the following staging options 3 phase staging is balanced 1 to 4 kW 1 stage only single phase 5 to 12 kW 1 or 2 stage only single phase 1 to 12 kW 1 stage only 3 phase 15 to 20 kW 1 or 2 stage only 3 phase 25 to 40 kW 1 2 or 3 stage 3 phase Heater coils are constructed of high grade resi...

Page 4: ...actory Product specifications are subject to change without notice 2 All dimensions are in inches 1 4 in 3 RH shown LH opposite 4 Hanger rods which are field supplied are shown for reference only UNIT 42BHC DIMENSIONS in A B C D E F G H J K L 08 2811 16 363 16 181 2 85 8 109 16 137 8 241 16 167 16 273 16 351 4 11 8 12 371 16 373 4 201 4 10 1111 16 137 8 331 16 183 16 363 16 3613 16 11 8 16 471 16 ...

Page 5: ...ry Product specifications are subject to change without notice 2 All dimensions are in inches 1 4 in 3 RH shown LH opposite 4 Hanger rods which are field supplied are shown for reference only UNIT 42BHC DIMENSIONS in A B C D E F G H J K L 08 2811 16 363 16 181 2 85 8 109 16 137 8 241 16 167 16 273 16 351 4 11 8 12 371 16 373 4 201 4 10 1111 16 137 8 331 16 133 16 363 16 3613 16 11 8 16 471 16 3715...

Page 6: ...factory Product specifications are subject to change without notice 2 All dimensions are in inches 1 4 in 3 RH shown LH opposite 4 Hanger rods which are field supplied are shown for reference only UNIT 42BHC DIMENSIONS in A B C D E F G H J K L M N 08 2811 16 363 16 181 2 85 8 109 16 137 8 241 16 167 16 273 16 351 4 1 11 8 61 4 12 371 16 373 4 201 4 10 1111 16 137 8 331 16 133 16 363 16 3613 16 1 1...

Page 7: ... 47 52 55 51 52 47 205 With Heat 52 61 62 71 61 52 71 62 246 12 No Heat 64 72 56 64 72 64 64 56 256 With Heat 65 79 71 85 79 65 85 71 300 16 No Heat 80 87 69 76 87 80 76 69 312 With Heat 81 94 84 97 94 81 97 84 356 20 No Heat 90 98 74 82 98 90 82 74 344 With Heat 92 105 90 103 105 92 103 90 390 30 No Heat 118 127 92 100 127 118 100 92 437 With Heat 120 134 108 122 134 120 122 108 484 40 No Heat 15...

Page 8: ... Factor and Water Flow Rate table on page 18 From the Cv Factor by Coil and Unit Size table on page 17 find the Cv value for unit size 16 with four rows Cv 7 2 P GPM 0 658 x Cv 2 7 0 0 658 x 7 2 2 2 18 feet of H2O b For selections other than those listed here please contact the factory IV Determine motor and drive To determine motor and drive selection requirements and obtain the cfm for a specifi...

Page 9: ... 00 1 00 1 00 0 95 0 97 0 97 0 90 0 94 0 93 0 85 0 90 0 89 0 80 0 86 0 85 0 75 0 82 0 81 0 70 0 78 0 77 0 65 0 74 0 72 0 60 0 70 0 67 0 55 0 66 0 62 0 50 0 62 0 57 0 45 0 58 0 52 0 40 0 53 0 47 0 35 0 48 0 42 0 30 0 43 0 38 0 25 0 38 0 33 OF NOMINAL CFM CORRECTION FACTOR Total Sensible 80 0 95 0 93 90 0 97 0 96 100 1 00 1 00 110 1 02 1 04 120 1 05 1 08 ELEVATION ft TOTAL HEAT Et SENSIBLE HEAT Es 1...

Page 10: ... 20 9 45 23 2 18 1 50 17 7 15 5 6 40 40 7 26 2 45 32 2 22 6 50 24 4 19 3 8 40 46 8 29 3 45 38 0 25 3 50 29 1 21 5 12 1200 4 40 47 8 32 5 45 37 7 28 2 50 28 8 24 4 6 40 62 5 40 0 45 50 2 34 6 50 38 2 29 6 8 40 71 5 44 5 45 58 2 38 4 50 44 7 32 7 16 1600 4 40 63 2 43 1 45 49 4 37 3 50 37 9 32 3 6 40 83 2 53 3 45 66 9 46 1 50 51 1 39 5 8 40 95 5 59 5 45 77 7 51 3 50 60 1 43 8 20 2000 4 40 79 8 54 1 4...

Page 11: ...8 84 3 7 9 82 5 74 3 13 9 146 4 103 1 11 9 124 8 94 0 9 8 102 8 84 7 16 4 172 1 111 9 14 3 149 7 103 1 12 0 126 1 94 1 25 10 3 129 1 96 7 8 5 105 8 86 2 6 8 84 4 75 9 12 4 155 3 106 9 10 5 130 7 96 5 8 5 106 6 86 6 14 7 183 3 116 3 12 6 157 7 106 2 10 6 132 0 96 5 DB Dry Bulb Temperature EWT Entering Water Temperature MBtuh Thousands of Btuh SCb Base Sensible Capacity at Nominal Cfm TCb Base Total...

Page 12: ...09 3 20 4 254 9 150 8 17 6 220 1 135 9 14 8 184 9 121 8 28 13 2 184 3 126 7 10 8 151 1 111 1 8 6 120 9 97 6 15 9 222 2 140 9 13 4 187 9 125 2 10 9 153 2 110 7 18 8 262 8 154 3 16 2 226 7 138 8 13 6 190 1 123 8 DB Dry Bulb Temperature EWT Entering Water Temperature MBtuh Thousands of Btuh SCb Base Sensible Capacity at Nominal Cfm TCb Base Total Capacity at Nominal Cfm WB Wet Bulb Temperature T Chan...

Page 13: ...re T Change in Water Temperature F UNIT SIZE 42BHC T 75 F DB 63 F WB 80 F DB 67 F WB 85 F DB 71 F WB 40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT 40 F EWT 45 F EWT 50 F EWT GPM TCb SCb GPM TCb SCb GPM TCb SCb GPM TCb SCb GPM TCb SCb GPM TCb SCb GPM TCb SCb GPM TCb SCb GPM TCb SCb 08 10 7 4 36 9 25 4 5 7 28 5 21 4 4 4 21 9 18 4 9 3 46 8 29 3 7 6 38 0 25 3 5 8 29 1 21 5 11 6 57 7 33 2 9 7 4...

Page 14: ...8 7 8 1800 40 47 8 37 3 49 9 46 3 61 0 34 1 61 7 43 0 75 6 39 5 76 3 48 3 45 35 2 31 5 39 1 39 1 47 4 28 5 48 2 37 3 62 3 34 2 63 0 43 0 50 24 3 24 3 31 8 31 8 32 6 22 7 35 1 31 7 47 4 28 6 48 2 37 5 2000 40 50 6 40 1 53 1 49 9 64 4 36 5 65 1 46 1 79 6 42 1 80 3 51 7 45 37 5 34 1 42 1 42 1 50 1 30 6 50 9 40 2 65 7 36 5 66 4 46 2 50 26 3 26 3 34 3 34 3 34 4 24 5 37 3 34 3 50 1 30 7 51 0 40 4 2200 4...

Page 15: ...6 9 65 7 56 8 80 0 43 6 80 6 53 3 96 6 49 4 97 0 59 1 45 50 2 40 3 53 1 50 5 65 8 37 3 66 4 47 1 82 9 43 7 83 6 53 4 50 35 7 33 6 41 5 41 5 49 3 30 6 50 5 40 5 67 2 37 4 67 8 47 2 2000 40 68 7 50 6 70 0 61 5 84 6 46 6 85 3 57 3 101 9 52 7 102 4 63 3 45 53 5 43 7 57 1 54 9 69 8 40 2 70 4 50 9 87 7 46 9 88 4 57 5 50 38 5 36 7 45 1 45 1 52 4 33 1 53 8 44 0 71 2 40 4 71 9 51 1 2200 40 72 3 54 2 74 0 6...

Page 16: ...29 1 14 657 1 22 684 1 30 711 1 37 736 1 45 761 1 52 786 1 59 809 1 67 833 1 74 4400 806 1 79 829 1 87 852 1 95 UNIT SIZE 42BHC BLOWER CFM TOTAL STATIC PRESSURE in wg 1 2 1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 08 9 x 6 600 1208 0 24 700 1220 0 28 1266 0 30 1310 0 33 1353 0 35 1395 0 37 800 1236 0 33 1280 0 35 1324 0 38 1366 0 40 1407...

Page 17: ... 39 0 52 0 03 0 06 0 12 0 18 0 24 0 04 0 13 0 07 0 10 1500 0 09 0 30 0 45 0 60 0 03 0 07 0 14 0 21 0 28 0 04 0 15 0 09 0 12 1600 0 10 0 34 0 51 0 68 0 04 0 08 0 16 0 24 0 32 0 05 0 17 0 10 0 13 1700 0 11 0 38 0 58 0 77 0 04 0 09 0 18 0 27 0 36 0 06 0 19 0 11 0 15 1800 0 12 0 43 0 65 0 86 0 05 0 10 0 20 0 30 0 40 0 06 0 21 0 12 0 17 20 1800 0 12 0 30 0 45 0 60 0 03 0 07 0 14 0 21 0 28 0 04 0 13 0 0...

Page 18: ...0 9 12 0 13 2 14 4 15 7 18 4 21 3 24 5 27 9 31 5 4 8 0 6 0 9 1 2 1 6 2 0 2 5 3 0 3 6 4 2 4 9 5 6 6 4 7 2 8 1 9 0 10 0 11 0 12 1 13 2 14 4 16 9 19 6 22 5 25 6 28 9 5 0 0 5 0 8 1 1 1 4 1 8 2 3 2 7 3 3 3 9 4 5 5 2 5 9 6 6 7 4 8 3 9 2 10 1 11 1 12 2 13 3 15 6 18 1 20 7 23 6 26 7 29 9 5 3 0 5 0 7 1 0 1 3 1 6 2 0 2 4 2 9 3 4 4 0 4 6 5 2 5 9 6 6 7 4 8 2 9 0 9 9 10 8 11 8 13 9 16 1 18 5 21 0 23 7 26 6 29 ...

Page 19: ...19 Typical wiring schematics BASE UNIT SINGLE PHASE POWER MOTOR CONTROL DISCONNECT OPTION SINGLE PHASE POWER ...

Page 20: ...20 Typical wiring schematics cont BASE UNIT THREE PHASE POWER MOTOR CONTROL DISCONNECT OPTION THREE PHASE POWER ...

Page 21: ... disconnect switch Heater power fusing 24 v class 2 transformer 40 va 8 pole control terminal strip Auto reset temperature limit switch Manual reset backup temperature limit switch Airflow safety switch 80 20 heater element wire Motor power fusing Motor control contactor Agency listed for 0 in clearance Electric heat options Single phase single stage or 2 stage heat Three phase single stage 2 or 3...

Page 22: ...l be of galvanized steel D Coils Standard unit shall be equipped with a 4 row coil for installation in a 2 pipe system and additional rows of coil shall be provided for installation in a 4 pipe sys tem as described in the Special Features section Coils shall have 1 2 in copper tubes aluminum fins bonded to the tubes by mechanical expansion and have a working pressure of 250 psig at 200 F Each coil...

Page 23: ...cated on the equipment schedule 3 Insulation a Units shall be equipped with edge sealed 1 in thick Tuf Skin RX insulation b Unit shall be equipped with edge sealed 1 in thick foil faced insulation 4 Controls a Unit shall be equipped with 24 v trans former motor contactor and terminal strip for connection to field provided controller b Unit shall be equipped with interlocking door disconnect switch...

Page 24: ...ge at any time specifications or designs without notice and without incurring obligations New Pg 24 Catalog No 524 232 Printed in U S A PC 201 Form 42BHC 1PD Replaces 42BH 4PD Book 3 Tab 7a Carrier Corporation Syracuse New York 13221 10 03 Book 4 Tab 4FC4 ...

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