BVC = Bally Vertical air flow Condenser
BCH = Bally Horizontal air flow Condenser
Tubing
1 = 3/8 OD smooth2 = 1/2 OD smooth
Motor & Fan Type
A = 30” fan with 850 RPM motor (Standard)
B = 30” fan with 550 RPM motor
C = 30” fan with 1140 RPM motor
Fan Configuration
First number = number of fans wide
Second number = number of fans in length
26 = 2 fans wide x 6 fans length (total 12 fans)
11 = 1 fan wide x 1 fan length (total 1 fan)
A = Aluminum 12 FPI (Standard), B = 10, C = 8
D = Gold Coat Alum 12 FPI, E = 10, F = 8
G = Copper 12 FPI, H = 10, J = 8
K = Heresite Coat Alum 12 FPI, L = 10, M = 8
• Standard 850 RPM quiet low speed dual
voltage (230/460) fan motors with male electrical
plug, moisture slinger, and rainshield for complete
weather protection.
• Optional 550 ultra low and 1140 RPM high
speed motors available.
• Rugged heavy-gauge galvanized steel rail
motor mounts/support.
• All fan sections individually baffled with full
height partitions, and clean-out panels.
• Complete selection of electrical fan cycling and
speed control options.
• Heavy-gauge galvanized steel cabinet
construction assembled with zinc plated huck
bolts supported on heavy-duty legs.
1 x 13.16531.747.563.395.02.9122.59570.45
1 x 14.13541.462.082.71243.8463.51580.52
1 x 14.65546.669.893.11404.3293.95790.52
1 x 15.36553.780.51071615.0974.721120.45
1 x 15.87558.888.11181765.5815.170120.49
1 x 16.46564.797.01291946.3365.948150.43
1 x 28.26582.71241652487.6867.025140.59
1 x 29.26592.71391852788.6167.875180.51
1 x 210.7410716121532210.209.447240.45
1 x 211.7711817623535311.1810.35240.49
1 x 212.9412919425938812.6811.90300.43
1 x 313.9714020927941912.9011.87270.52
1 x 316.0716124132148215.2614.14360.45
1 x 317.6417626535352916.7515.52360.49
1 x 319.4019429138858219.0117.85450.43
1 x 320.6420631041361919.6118.17360.57
1 x 323.0123034546069022.5521.17450.51
1 x 426.3426339552779024.5022.39221.20
1 x 430.2930345460690928.7726.65301.01
1 x 432.5532648865197731.9029.95370.88
1 x 537.95379569759113836.0533.39301.26
1 x 540.70407610814122139.8837.44371.10
1 x 645.54455683911136643.2640.07301.52
1 x 648.84488733977146547.8544.93371.32
2 x 218.6018627937255817.3015.81360.52
2 x 221.4721532242964420.3918.89480.45
2 x 223.5023535347070522.3320.68480.49
2 x 225.8425838851777525.3223.77600.43
2 x 327.9027941955883725.9523.72540.52
2 x 332.1732248264396530.5628.31720.45
2 x 335.24352529705105733.4731.01720.49
2 x 338.77388581775116337.9935.66900.43
2 x 341.29413619826123939.2236.33720.57
2 x 346.02460690920138145.1042.34900.51
2 x 453.895398081078161750.1145.80451.20
2 x 460.576069091211181757.5453.30601.01
2 x 465.996609901320198064.6760.71750.88
2 x 575.9075911381518227772.1066.79601.26
2 x 582.5082512371650247580.8575.90751.10
2 x 691.0891113661822273286.5280.15601.52
2 x 698.9999014851980297097.0191.07751.32
10°F
(5.56°C)
TEMPERATURE DIFFERENCE (TD)
12 FPI10 FPI8 FPI
15°F
(8.3°C)
20°F
(11.1°C)
Single Row Models
Double Row Models
30°F
(16.7°C)
1°F
(0.56°C)
1°F
(0.56°C)
Maximum
No. of
Feeds
MBH
@ 1° F TD
Per Feed
(12 FPI)
Correction Factors for Other refrigerants - Use R22 Values Multiplied By
R134aR12R507R404AR407AR407BR502R407C
0.940.950.970.970.970.970.981.00
NOTES:(1)Above capacity data based on 0°F subcooling and at sea level.
(2)TD = Condensing temperature - ambient temperature
(3)Standard fin spacing is 12 FPI except models 056 and 112 (13 FPI).
(4)For High Altitude applications apply the following correction factors:
0.94 for 2000 feet, 0.88 for 4000 feet and 0.81 for 6000 feet.
1 x 13.07030.746.161.492.12.8252.51770.44
1 x 14.01140.160.280.21203.7313.41080.50
1 x 14.51545.267.790.31354.1993.83890.50
1 x 15.20452.078.11041564.9444.579120.43
1 x 15.69957.085.51141715.4145.015120.47
1 x 16.27162.794.11251886.1465.770150.42
1 x 28.01780.21201602417.4556.814140.57
1 x 28.98789.91351802708.3587.639180.50
1 x 210.411041562083129.8929.164240.43
1 x 211.4111417122834210.8410.04240.48
1 x 212.5512518825137612.3011.54300.42
1 x 313.5513520327140612.5111.51270.50
1 x 315.5815623431246714.8013.71360.43
1 x 317.1117125734251316.2515.05360.48
1 x 318.8218828237656518.4417.31450.42
1 x 320.0220030040060119.0217.62360.56
1 x 322.3222333544667021.8720.53450.50
1 x 425.5525638351176723.7721.72221.16
1 x 429.3829444158888127.9125.85300.98
1 x 431.5831647463294730.9429.05370.85
1 x 536.81368552736110434.9732.39301.23
1 x 539.48395592790118438.6936.32371.07
1 x 644.17442663883132541.9638.87301.47
1 x 647.37474711947142146.4143.58371.28
2 x 218.0418027136154116.7815.34360.50
2 x 220.8220831241662519.7818.32480.43
2 x 222.8022834245668421.6620.06480.47
2 x 225.0625137650175224.5623.05600.42
2 x 327.0627140654181225.1723.00540.50
2 x 331.2031246862493629.6427.46720.43
2 x 334.18342513684102532.4730.08720.47
2 x 337.60376564752112836.8534.59900.42
2 x 340.05400601801120138.0435.24720.56
2 x 452.275237841045156848.6144.43451.16
2 x 458.755888811175176355.8251.70600.98
2 x 464.016409601280192062.7358.88750.85
2 x 573.6273611041472220969.9464.78601.23
2 x 580.0280012001600240178.4273.62751.07
2 x 688.3488313251767265083.9377.74601.47
2 x 696.0296014401920288194.1088.34751.28
10°F
(5.56°C)
TEMPERATURE DIFFERENCE (TD)
12 FPI10 FPI8 FPI
15°F
(8.3°C)
Single Row Models
Double Row Models
20°F
(11.1°C)
30°F
(16.7°C)
1°F
(0.56°C)
1°F
(0.56°C)
Maximum
No. of
Feeds
MBH
@ 1° F TD
Per Feed
(12 FPI)
To calculate capacities with other refrigerants, multiply the R22 capacity by the appropriate correction factor.
Refer to the table accompanying each of the R22 tables.
NOTES:(1)Above capacity data based on 0°F subcooling and at sea level.
(2)TD = Condensing temperature - ambient temperature
(3)Standard fin spacing is 12 FPI except models 056 and 112 (13 FPI).
(4)For High Altitude applications apply the following correction factors:
0.94 for 2000 feet, 0.88 for 4000 feet and 0.81 for 6000 feet.
(1) For R407A, R507 use R22 Charge x 0.87. For R407-C use R22 Charge x 0.97.
For R134a and R502 use R22 Charge. For R12 use R22 Charge X 1.1.
(2) Normal Charge is the refrigerant charge for warm ambient or summer operation. For low ambient or winter charge with
flooded head pressure control and fan cycling see Page 33 and Page 34.
(3) 90% FULL is the liquid refrigerant weight at 90% of internal volume and is for reference ONLY.
(4) For 50Hz Fan Data use 60Hz CFM (m3/h) X 0.83.
(5) Sound Pressure Level at ten meter distance.
(6) Less weight of refrigerant charge.
1 x 12.54025.438.150.876.22.3242.05940.63
1 x 13.16231.647.463.294.83.0112.76080.40
1 x 13.52335.252.870.51063.3123.01490.39
1 x 13.94939.559.279.01183.8223.56880.49
1 x 14.29843.064.586.01294.1043.83580.54
1 x 14.58045.868.791.61374.5034.288100.46
1 x 26.31663.294.71261896.0155.514140.45
1 x 27.00870.11051402106.5895.997180.39
1 x 27.89879.01181582377.6447.136180.44
1 x 28.60386.01291722588.2157.677180.48
1 x 29.15991.61371832759.0068.575180.51
1 x 310.561061582113179.9309.037180.59
1 x 311.8211817723635511.4410.68240.49
1 x 312.8912919325838712.3111.51240.54
1 x 313.7313720627541213.5012.86300.46
1 x 315.2415222930545714.1713.32360.42
1 x 316.2016224332448615.5914.92450.36
1 x 420.2320230340560719.0217.32151.35
1 x 422.5322533845167621.5220.10201.13
1 x 423.6623735547371023.2622.15250.95
1 x 528.2428242456584726.9725.19300.94
1 x 529.1829243859288728.6927.32370.79
1 x 633.88339508678101732.3630.23301.13
1 x 635.02350525710106534.4232.78370.95
2 x 214.0614121128142213.2212.03270.52
2 x 215.7915823731647415.2814.27360.44
2 x 217.1817225834451516.4015.33360.48
2 x 218.2918327436654917.9817.12450.41
2 x 321.0921131642263319.8318.05360.59
2 x 323.6623735547371022.9021.37480.49
2 x 325.7625838651577324.6022.99480.54
2 x 327.4427441254982326.9825.69600.46
2 x 330.4830545761091428.3426.63720.42
2 x 332.3932448664897231.1829.85900.36
2 x 440.46405607809121438.0334.63301.35
2 x 445.07451676901135243.0440.20401.13
2 x 447.32473710946142046.5244.29500.95
2 x 556.475658471129169453.9350.38600.94
2 x 559.165928871183177558.1555.37750.79
2 x 667.7767810171355203364.7260.45601.13
2 x 670.9871010651420212969.7866.44750.95
10°F
(5.56°C)
TEMPERATURE DIFFERENCE (TD)
12 FPI10 FPI8 FPI
15°F
(8.3°C)
Double Row Models
20°F
(11.1°C)
Single Row Models
30°F
(16.7°C)
1°F
(0.56°C)
1°F
(0.56°C)
Maximum
No. of
Feeds
MBH
@ 1° F TD
Per Feed
(12 FPI)
Correction Factors for Other refrigerants - Use R22 Values Multiplied By
R134aR12R507R404AR407AR407BR502R407C
0.940.950.970.970.970.970.981.00
NOTES:(1)Above capacity data based on 0°F subcooling and at sea level.
(2)TD = Condensing temperature - ambient temperature
(3)Standard fin spacing is 12 FPI except models 056 and 112 (13 FPI).
(4)For High Altitude applications apply the following correction factors:
0.94 for 2000 feet, 0.88 for 4000 feet and 0.81 for 6000 feet.
(5)For 50Hz capacity multiply by 0.92.
- 12 -
Page 13
CAPACITY DATA - 550 RPM MODELS - R404A
BVC
MODEL
NUMBER
007
009
010
011
012
013
017
019
022
024
027
029
034
037
041
043
048
056
063
068
079
085
095
103
039
045
049
054
058
067
073
081
086
096
112
126
137
158
172
190
206
TOTAL HEAT OF REJECTION CAPACITY (MBH)
Fan Rows
1°F
(0.56°C)
1 x 12.46424.637.049.373.92.2541.99840.62
1 x 13.06730.746.061.392.02.9212.67780.38
1 x 13.41734.251.368.31033.2132.92490.38
1 x 13.83038.357.576.61153.7073.46180.48
1 x 14.16941.762.583.41253.9813.72080.52
1 x 14.44244.466.688.81334.3684.159100.44
1 x 26.12661.391.91231845.8345.348140.44
1 x 26.79868.01021362046.3915.817180.38
1 x 27.66176.61151532307.4156.922180.43
1 x 28.34583.51251672507.9697.447180.46
1 x 28.88588.81331782678.7368.318180.49
1 x 310.241021542053079.6328.766180.57
1 x 311.4611517222934411.0910.36240.48
1 x 312.5112518825037511.9411.16240.52
1 x 313.3213320026640013.1012.47300.44
1 x 314.7814822229644313.7512.92360.41
1 x 315.7115723631447115.1214.48450.35
1 x 419.1919228839258918.4416.80151.28
1 x 421.8621932843765620.8719.50201.09
1 x 422.6422634045968922.5621.48250.91
1 x 527.3927441154882226.1624.43300.91
1 x 528.3128342557486127.8226.50370.77
1 x 632.8732949365798631.3929.32301.10
1 x 633.97340510689103333.3931.80370.92
2 x 213.6413620527340912.8211.67270.51
2 x 215.3115323030645914.8213.84360.43
2 x 216.6616725033350015.9114.87360.46
2 x 217.7417726635553217.4416.61450.39
2 x 320.4620530740961419.2417.51360.57
2 x 322.9522934445968822.2120.73480.48
2 x 324.9925037550075023.8622.30480.52
2 x 326.6226639953279926.1724.92600.44
2 x 329.5729644359188727.4925.83720.41
2 x 331.4231447162894330.2428.95900.35
2 x 439.24392589785117736.8933.59301.31
2 x 443.72437656874131141.7538.99401.09
2 x 445.90459689918137745.1242.96500.92
2 x 554.785488221096164352.3248.86600.91
2 x 557.385748611148172256.4153.71750.77
2 x 665.746579861315197262.7858.64601.10
2 x 668.8568910331377206667.6864.45750.92
10°F
(5.56°C)
TEMPERATURE DIFFERENCE (TD)
12 FPI10 FPI8 FPI
15°F
(8.3°C)
20°F
(11.1°C)
Single Row Models
Double Row Models
30°F
(16.7°C)
1°F
(0.56°C)
1°F
(0.56°C)
Maximum
No. of
Feeds
MBH
@ 1° F TD
Per Feed
(12 FPI)
To calculate capacities with other refrigerants, multiply the R22 capacity by the appropriate correction factor.
Refer to the table accompanying each of the R22 tables.
NOTES:(1)Above capacity data based on 0°F subcooling and at sea level.
(2)TD = Condensing temperature - ambient temperature
(3)Standard fin spacing is 12 FPI except models 056 and 112 (13 FPI).
(4)For High Altitude applications apply the following correction factors:
0.94 for 2000 feet, 0.88 for 4000 feet and 0.81 for 6000 feet.
NOTES:(1)For R407A, R507 use R22 Charge x 0.87. For R407-C use R22 Charge x 0.97.
For R134a and R502 use R22 Charge. For R12 use R22 Charge x 1.1.
(2)Normal Charge is the refrigerant charge for warm ambient or summer operation. For low ambient
or winter charge with flooded head pressure control and fan cycling see Page 33 and Page 34.
(3)90% FULL is the liquid refrigerant weight at 90% of internal volume and is for reference ONLY.
(4)For 50Hz Fan data use 60Hz CFM (m3/h) x 0.83.capacity multiply by 0.92.
(5)Less weight pf refrigerant charge.
1 x 13.62736.354.472.51093.3032.91170.52
1 x 14.98949.974.81001504.6774.22080.62
1 x 15.51655.282.71101655.0944.57290.61
1 x 16.44664.596.71291936.1185.589120.54
1 x 17.15771.61071432156.7106.114120.60
1 x 17.98579.91201602407.6787.095150.53
1 x 29.9711001501992999.3488.434140.71
1 x 210.9811016522032910.149.100180.61
1 x 212.9012919425838712.2511.19240.54
1 x 214.3414321528743013.4412.25240.60
1 x 215.9816024032047915.3714.20300.53
1 x 316.5516624833149715.2913.72270.61
1 x 319.3119329038657918.3316.74360.54
1 x 321.4921532243064520.1518.36360.60
1 x 323.9624035947971923.0421.29450.53
1 x 325.4025438150876224.0321.94360.71
1 x 328.4828542757085427.1425.19450.63
1 x 431.0131046562093028.6425.71221.41
1 x 436.76368551735110334.7731.76301.23
1 x 440.34403605807121038.4435.67371.09
1 x 546.06461691921138243.5739.79301.54
1 x 550.435047561009151348.0644.59371.36
1 x 655.275538291105165852.2947.75301.84
1 x 660.516059081210181557.6653.51371.64
2 x 222.0422033144166120.3518.27360.61
2 x 225.7925838751677424.4822.37480.54
2 x 228.6328642957385926.8424.45480.60
2 x 231.9231947963895730.6928.36600.53
2 x 333.0633149666199230.5327.40540.61
2 x 338.65386580773115936.6933.52720.54
2 x 342.93429644859128840.2536.67720.60
2 x 347.89479718958143746.0542.55900.53
2 x 350.805087621016152448.0643.89720.71
2 x 356.975708541139170954.2950.38900.63
2 x 463.446349521269190358.5852.58451.41
2 x 473.5273511031470220569.5563.51601.23
2 x 481.7681812261635245377.9272.30751.09
2 x 592.1292113821842276487.1579.59601.54
2 x 5102.2102215332044306797.4190.39751.36
2 x 6110.51105165822113316104.695.50601.84
2 x 6122.71227184024533680116.9108.5751.64
10°F
(5.56°C)
TEMPERATURE DIFFERENCE (TD)
12 FPI10 FPI8 FPI
15°F
(8.3°C)
20°F
(11.1°C)
Single Row Models
Double Row Models
30°F
(16.7°C)
1°F
(0.56°C)
1°F
(0.56°C)
Maximum
No. of
Feeds
MBH
@ 1° F TD
Per Feed
(12 FPI)
Correction Factors for Other refrigerants - Use R22 Values Multiplied By
R134aR12R507R404AR407AR407BR502R407C
0.940.950.970.970.970.970.981.00
NOTES:(1)Above capacity data based on 0°F subcooling and at sea level.
(2)TD = Condensing temperature - ambient temperature
(3)Standard fin spacing is 12 FPI except models 056 and 112 (13 FPI).
(4)For High Altitude applications apply the following correction factors:
0.94 for 2000 feet, 0.88 for 4000 feet and 0.81 for 6000 feet.
(5)For 50Hz capacity multiply by 0.92.
- 16 -
Page 17
CAPACITY DATA - 1140 RPM MODELS - R404A
BVC
MODEL
NUMBER
007
009
010
011
012
013
017
019
022
024
027
029
034
037
041
043
048
056
063
068
079
085
095
103
039
045
049
054
058
067
073
081
086
096
112
126
137
158
172
190
206
TOTAL HEAT OF REJECTION CAPACITY (MBH)
TEMPERATURE DIFFERENCE (TD)
Fan Rows
1°F
(0.56°C)
1 x 13.51835.252.870.41063.2042.82470.50
1 x 14.83948.472.696.81454.5374.09380.60
1 x 15.35153.580.31071614.9414.43590.59
1 x 16.25262.593.81251885.9355.422120.52
1 x 16.94369.41041392086.5095.930120.58
1 x 17.74677.51161552327.4486.882150.52
1 x 29.67296.71451932909.0688.181140.69
1 x 210.651061602133199.8348.827180.59
1 x 212.5212518825037511.8810.85240.52
1 x 213.9113920927841713.0411.88240.58
1 x 215.5015523331046514.9113.77300.52
1 x 316.0616124132148214.8313.31270.59
1 x 318.7318728137556217.7816.24360.52
1 x 320.8520831341762519.5417.81360.58
1 x 323.2423234946569722.3520.65450.52
1 x 324.6424637049373923.3121.29360.68
1 x 327.6327641455382926.3324.43450.61
1 x 430.0830145160290327.7824.93221.37
1 x 435.65357535713107033.7330.80301.19
1 x 439.13391587783117437.2934.60371.06
1 x 544.68447670894134042.2738.60301.49
1 x 548.92489734978146746.6143.26371.32
1 x 653.615368041072160850.7246.32301.79
1 x 658.695878801174176155.9351.90371.59
2 x 221.3821432142864119.7417.72360.59
2 x 225.0225037550075123.7521.70480.52
2 x 227.7727841755583326.0323.72480.58
2 x 230.9631046461992929.7727.51600.52
2 x 332.0732148164196229.6126.58540.59
2 x 337.49375562750112535.5932.51720.52
2 x 341.64416625833124939.0435.57720.58
2 x 346.45465697929139444.6641.27900.52
2 x 349.28493739986147846.6242.57720.68
2 x 355.265538291105165852.6648.86900.61
2 x 461.536159231231184656.8251.00451.37
2 x 471.3171310701426213967.4661.61601.19
2 x 479.3179311901586237975.5870.14751.06
2 x 589.3689413401787268184.5377.20601.49
2 x 599.1599214871983297594.4987.68751.32
2 x 6107.21072160821453217101.492.64601.79
2 x 6119.011901785N/AN/A113.4105.2751.59
10°F
(5.56°C)
12 FPI10 FPI8 FPI
15°F
(8.3°C)
Double Row Models
20°F
(11.1°C)
Single Row Models
30°F
(16.7°C)
1°F
(0.56°C)
1°F
(0.56°C)
Maximum
No. of
Feeds
MBH
@ 1° F TD
Per Feed
(12 FPI)
To calculate capacities with other refrigerants, multiply the R22 capacity by the appropriate correction factor.
Refer to the table accompanying each of the R22 tables.
NOTES:(1)Above capacity data based on 0°F subcooling and at sea level.
(2)TD = Condensing temperature - ambient temperature
(3)Standard fin spacing is 12 FPI except models 056 and 112 (13 FPI).
(4)For High Altitude applications apply the following correction factors:
0.94 for 2000 feet, 0.88 for 4000 feet and 0.81 for 6000 feet.
NOTES:(1)For R407A, R507 use R22 Charge x 0.87. For R407-C use R22 Charge x 0.97.
For R134a and R502 use R22 Charge. For R12 use R22 Charge x 1.1.
(2)Normal Charge is the refrigerant charge for warm ambient or summer operation. For low ambient
or winter charge with flooded head pressure control and fan cycling see Page 33 and Page 34.
(3)90% FULL is the liquid refrigerant weight at 90% of internal volume and is for reference ONLY.
(4)For 50Hz Fan data use 60Hz CFM (m3/h) x 0.83.capacity multiply by 0.92.
(5)Less weight pf refrigerant charge.
The purpose of a refrigeration system is to absorb
heat from an area where it is not wanted and reject
this heat to an area where it is unobjectionable.
By referring to the diagram below, it can be seen
that only a few components are required to perform
this task.
High pressure/high temperature vapor leaves the
compressor and is forced into the condenser via the
discharge line. The condenser first desuperheats the
vapor down to its saturation point. This saturation
point can be expressed as the condensing
temperature of the refrigerant and varies with
condenser size, load and ambient temperature.
Now the condenser must remove the latent heat of
condensation from the refrigerant so that it may fully
condense. After the refrigerant has fully condensed,
it will be subcooled to some extent.
The liquid leaving the condenser is still at a high
pressure but at a much lower temperature and drains
into the receiver. As the liquid level in the receiver
increases, the vapor is allowed to vent back up to the
condenser via the condensate line.
Because the dip tube almost reaches the bottom of the
receiver, only liquid will enter the liquid line. This liquid
now passes through the metering device where its
pressure is reduced to the evaporating pressure.
The temperature will drop with pressure since the
refrigerant will always attempt to meet its saturation
point during a change of state.
The condensing temperature decreases as the
ambient temperature drops and/or as the condenser
surface increases.
THE BASIC REFRIGERATION CYCLE
- 20 -
Page 21
GLOSSARY OF TERMS
Balance point - after a system stabilizes, the heat
added to the refrigerant during the refrigeration cycle
will equal the heat rejected at the condenser. The
balance point usually refers to the actual TD that the
system is operating at. The balance point could
refer to a low side balance or a high side balance.
For example, a system operating with a 120 oF
condensing temperature in a 90 oF ambient will have
a condenser balance point of 30 oF TD.
Circuit - a circuit can be considered a group of
feeds. A condenser may be sized to handle several
refrigeration systems at one time. Each system is
considered one circuit and the number of feeds
required for each circuit depends on the THR for
that particular system. Each circuit has its own inlet
and outlet header. The number of circuits on a
condenser can not exceed the total number of feeds
available.
Compression Ratio - Compression ratio equals
the discharge pressure in pounds per square inch
absolute (psia) divided by the suction pressure in
psia. The compression ratio in a compressor
increases as suction pressure decreases and as
discharge pressure increases. (at sea-level, psia is
equal to psig plus 14.7).
Compressor Capacity - can be defined as the
actual refrigerating capacity available at the
evaporator and suction line after considering the
overall system balance point. Compressor capacity
is mainly affected by the evaporating and
condensing temperatures of the system.
Condensing Temperature (CT) - is the
temperature where the refrigerant vapor condenses
back to a liquid. This temperature varies with
condenser size. Condensing temperature should be
kept as low as possible to maintain higher
refrigerating capacity and system efficiency
Desuperheat - refers to the lowering of refrigerant
superheat. Hot vapor entering a condenser must
first be desuperheated before any condensing of the
refrigerant can take place.
Evaporating Temperature - the temperature at
which heat is absorbed in the evaporator, at this
temperature, the refrigerant changes from a liquid to
a vapor. This evaporating temperature is dependent
on pressure and must be lower than the surrounding
temperature for heat transfer to take place.
Feed - a single path for refrigerant flow inside a
condenser. This path begins at the inlet header and
terminates at the condenser’s outlet header. These
feeds can be grouped together to accommodate one
or more circuits.
Heat of Compression - heat is added to the
refrigerant as it is compressed. Evidence of this can
be observed on the pressure-enthalpy diagram for
the refrigerant being used. The amount of this heat
is dependent on the refrigerant type and
compression ratio.
Additional heat from friction also increases the heat
of compression. All of this heat along with the heat
absorbed in the evaporator, suction line and any
motor heat must be rejected by the condenser.
Condensate Line - (also called “Drain Leg”) is a
term that describes the refrigerant line between the
condenser and the receiver.
The condensate line should drop vertically and is
typically larger than the liquid line. This is to
promote free draining of the refrigerant from the
condenser to the receiver.
Condenser Temperature Difference (TD) - is the
difference between the condensing temperature of
the refrigerant and the temperature of the air
entering the condenser.
.
Latent Heat of Vaporization (also Latent Heat of
Condensation) - refers to the heat required to fully
vaporize or condense a refrigerant. This latent heat
varies with temperature and pressure. Latent heat is
often referred to as hidden heat since adding heat to a
saturated liquid or removing heat from a saturated
vapor will result in a change of state and heatcontent but not a change in temperature.
Liquid Line - is the piping between the receiver and
the metering device. On systems without a receiver,
the liquid line runs between the condenser and the
metering device.
- 21 -
Page 22
GLOSSARY OF TERMS
Open Drive - This term is given to a compressor
where its driving motor is separate from the
compressor. In this type of compressor, motor heat
is not transferred to the refrigerant.
Refrigerating Effect - the total amount of heat
absorbed by the evaporator. This heat includes both
latent heat and superheat. This value is usually
expressed in BTU/Hour, (BTUH), or 1000
BTU/Hour (MBH)
Saturation - occurs whenever the refrigerant exists
in both a vapor and liquid state, example: a
cylinder of refrigerant is in a saturated condition or
state of equilibrium. Any heat removed from a
saturated vapor will result in condensation.
Conversely, any heat added to a saturated liquid
will result in evaporation of the refrigerant.
Temperature pressure charts for the various
refrigerants indicate saturation values. For a single
component refrigerant, each temperature value can
only have one pressure when the refrigerant is
either a saturated vapor or saturated liquid.
A single component refrigerant can not change
state until it approaches its saturation temperature
or pressure. For refrigerant blends, the pressuretemperature relationship is more complex. Simply
stated, Dew point temperature (saturation point in
evaporator-low side) and Bubble point temperature
(saturation point in condenser-high side) are used to
define their saturated condition.
Subcool - to reduce a refrigerant’s temperature below
its saturation point or bubble point. Subcooling of the
refrigerant is necessary in order to maintain a solid
column of liquid at the inlet to the metering device.
Subcooling can take place naturally (in the condenser)
or it can be accomplished by a suction liquid heat
exchanger or a mechanical sub-cooler (separate
refrigeration system).
Superheat - to heat a refrigerant above its saturation
point or dew point. The “amount of superheat” is the
difference between the actual refrigerant temperature
and its saturation temperature. This value is usually
expressed in degrees Fahrenheit or degrees Celsius.
Total Heat of Rejection (THR) is the heat absorbed
at the evaporator plus the heat picked up in the
suction line plus the heat added to the refrigerant in
the compressor. Condensers are sized according to
the required THR. Compressor capacity and the heat
of compression are usually enough to determine the
THR.
- 22 -
Page 23
CONDENSER SELECTION
During a condenser selection process, the
application engineer should choose a condenser
which is large enough to reject all of the heat added
to the refrigerant during the refrigerating cycle. When
the condenser is sized to equal the total heat
of rejection (THR) at design conditions, enough heat
will be rejected to maintain the required condensing
temperature. This will ensure that sufficient
refrigeration capacity will be maintained at the
evaporator during the warm summer period when it
is needed the most.
If a condenser is undersized, the condensing
temperature (CT) will be driven upwards. This
naturally occurs as the system seeks its new
balance point. As the CT increases, the operating
temperature difference (TD) oF the condenser also
increases. Even though the capacity of the
condenser increases with the higher TD, the
refrigerating capacity of the compressor will
decrease due to the higher condensing temperature.
An undersized condenser may perform
satisfactorily when ambient temperatures are
below design, but the overall system capacity will
not be high enough during the warmer periods.
Oversizing a condenser increases project costs and
can also lead to undesirable operating conditions.
Low ambient control devices such as pressure
regulators and fan cycling switches operate to
maintain a sufficient pressure in the condenser
during low ambient periods.
On systems utilizing a receiver and flooding type of
head pressure control, more refrigerant will be
required to flood the condenser in order to achieve
the desired condensing pressure.
Consider an air conditioning system with an
oversized condenser which is only used during the
summer time and does not have any type of head
pressure control. This particular system may
experience problems due to a lack of subcooling.
Since the condenser was oversized the amount of
natural subcooling available is less. The maximum
amount of natural subcooling possible is the difference between the condensing temperature and the
ambient temperature. If this amount of subcooling is
not enough to offset the pressure losses in the liquid
line, then flashing is certain to occur.
Flashing produces vapor at the metering device
which was designed to meter 100% liquid. One cure
for this is to apply head pressure control devices to
the system that will increase the head pressure and
ensure adequate liquid subcooling.
UNDERSIZED
CONDENSER
+30°F
+95°F
- 23 -
PROPERLY SELECTED
CONDENSER
+95°F
-15°F
Page 24
CONDENSER SELECTION
PRELIMINARY DATA REQUIREMENTS
There are several factors that influence the size of an air
cooled condenser. Before a condenser can be properly
selected, this information must be obtained. It may be
convenient for you to refer to the calculation worksheets
(P. 26 and 27) as you read through the following
information.
suction vapor picks up heat as it travels through the
warm motor windings. The condenser must be sized to
reject this heat along with any other heat absorbed by
the refrigerant. It can be observed in Table 2 that
hermetic refrigerant cooled compressors have higher
heat of rejection factors.
1. What are the Desired Evaporating and
Condensing Temperatures?
The evaporating temperature is needed to determine
the THR (total heat of rejection) of the condenser. As the
evaporating temperature is lowered, the heat of
compression increases due to the higher compression
ratio. This affects THR.
The required condensing temperature (CT) must be known
before the temperature difference can be determined. This
is necessary since condenser capacity varies with
temperature difference. The required compressor capacity
will determine the maximum CT since the compressor can
only provide this capacity at certain operating conditions.
You could also refer to Table 1 for CT recommendations.
The heat of compression varies with compression ratio.
Both evaporating and condensing temperatures affect the
compression ratio.
Often customers may request a specified TD value (i.e 10,
15 etc.). The condensing temperature is then established
as being the sum of this TD value and the design ambient
temperature. (i.e 10 + 95 = 105 oF)
2.Compressor Capacity
Determine the capacity of the compressor at the desired
evaporating and condensing conditions. Remember, tonsrefrigeration does not necessarily equal horsepower. As the
evaporating temperature decreases and/or the condensing
temperature increases, tons refrigeration per horsepower
decreases. One ton refrigeration equals 12000 Btuh.
3.Condenser Ambient Design Temperature
This will be the maximum design temperature of the air
entering the condenser. It is typical to add about 5 oF
to the maximum outdoor design temperature in some
instances to compensate for radiation from a dark
surface such as a black roof.
4. Type of Compressor
It is necessary to identify the type of compressor to be
utilized in the application so that accurate heat of
rejection information may be obtained. For example, opendrive compressors can be belt driven or direct coupled to
the motor. Electrical energy from the motor is converted to
heat energy which is not transferred to the refrigerant as in
a refrigerant cooled compressor.
In a hermetic refrigerant cooled compressor, the cool
5. Heat of Compression
As the refrigerant is compressed in the compressor, its
heat content increases due to the physical and
thermodynamic properties of the refrigerant. Additional
heat from friction between moving parts in the compressor
also increases the heat content of the refrigerant. The
amount of heat added to the refrigerant is dependent on
the refrigerant type, the compression ratio and the type of
compressor.
Accurate THR or heat of compression factors may be
available from the compressor manufacturer. Always
attempt to access this information prior to using other
methods. If this information is not available, refer to the
heat of rejection factors in Table 2.
However, in situations where your application exceeds the
limits of this table, such as in compound compression and
cascade systems, one of the following calculations may be
performed.
For OPEN DRIVE COMPRESSORS:
Total heat of Rejection = Compressor Capacity (Btuh) + (2545 x BHP)
(BHP - Brake Horsepower of the motor)
For SUCTION COOLED COMPRESSORS:
Total heat Rejection = Compressor Capacity (Btuh) + (3413 x KW)
(KW may be obtained from the power input curve for that compressor)
6. What is the Refrigerant Type?
A condenser’s capacity can vary by 8 to 10% due to
differences in physical and thermodynamic properties.
Refer to the correct refrigerant capacity table or use factor
as indicated. (see P. 2)
7. Altitude
The volume of a given mass of air increases as it rises
above sea level. As its volume increases, its density
decreases. As the air becomes less dense, its heat
capacity decreases. Therefore, more air volume would
have to be forced through the condenser at 6,000 feet
above sea level than at sea level.
Since condenser capacities are based on operation at
sea level, an altitude correction factor must be applied to
the total heat of rejection. Basically, the load on the
condenser will be increased to a point which will compen
sate for the higher altitude.
to the maximum outs
- 24 -
Page 25
CONDENSER SELECTION
8.Are you Replacing a Water Cooled Condenser with
a Remote Air Cooled Condenser?
If this is the case, it should be remembered that the
compressor will operate at a higher discharge pressure
after converting to air cooled. To help minimize the
resulting loss in capacity, the condenser should be sized
generously. In other words, you may consider keeping the
balance point of the condenser as low as possible.
9. Is this an application for multiple circuits?
If you wish to utilize the condenser for multiple circuits,
then all of the above data must be obtained for EACH
circuit. After obtaining this information, proceed to the
MULTIPLE CIRCUIT WORKSHEET (P. 27) (for single
circuit applications refer to the SINGLE CIRCUIT
WORKSHEET (P. 26) ).
COMPR. CAPACITY (MBH) X HR f X ALT fXREF f=THR (MBH)
Where HR f =Heat of rejection factor (see Table 2, P. 25)
o
FCOND TEMP=
(See P.2)
XXX=
ALT f = Altitude/elevation factor (Sea level=1, or above factor)
REF f = Refrigerant Correction factor (R22 = 1)
Alternate refrigerant based on factors from P. 2
R12 = 1/.95 = 1.05, R134a = 1/.94 = 1.06,
R502 = 1/.98 = 1.02, R404A/R507/R407A/B = 1/.97 = 1.03
THR = Total Heat of Rejection (MBH, factored in R22) to be rejected by condenser
o
F
3. CONDENSER MODEL SELECTION
Refer to the R22 CAPACITY section (P. 2) and select a condenser at the TD (required above) that will closely match
the above calculated THR value. (NOTE: use the R22 capacity Table. The above calculation has already been
adjusted for alternate types).
COND. MODEL #
4. ACTUAL CONDENSING TEMP CALCULATION
THR (from sec. 2)/ value (B)= ATD (actual Temperature Difference)
/=
To find the Actual Condensing Temp. (ACT) just add the Actual Temperature Difference (ATD)
to the design Ambient Temperature (AT).
ATD+AT=ACT
+=
NOTE: The Actual Condensing Temp. MUST EQUAL or BE LESS THAN the condensing temp recorded in section 1 above.
This ensures the compressor capacity is maintained when operating the condenser at the designed ambient temperature.
For further assistance please contact your local BALLY sales representative.
For the model selected
record the THR PER 1oF TD value =(B) (see P. 2)
o
F
- 26 -
Page 27
WORKSHEETS - MULTIPLE CIRCUITS
MULTIPLE CIRCUIT WORKSHEET
(REFER TO P. 24 FOR GUIDELINES & SEE SAMPLE SELECTION ON P. 29)
1. SYSTEM DATA REQUIREMENTS
CONDENSER DESIGN AMBIENT TEMP =(AT ) oF
ALTITUDE =SEA LEVELorFEETFACTOR =(See P. 2)
Where HR f =Heat of rejection factor (see Table 2, P. 25)
ALT f = Altitude/elevation factor (Sea level=1, see P. 2 for Higher)
REF f = Refrigerant Correction factor (R22 = 1)
R12 = 1/.95 = 1.05, R134a = 1/.94 = 1.06,
R502 = 1/.98 = 1.02, R404A / R507 / R407A/B = 1/.97 = 1.03
Alternate refrigerant based on factors from P. 2
THR = Total Heat of Rejection (MBH) to be rejected by condenser (R22 capacity)
TD = Condensing Temp - Ambient Temperature
CL = Circuit loading per 1oF TD
JOB REF:
3. CONDENSER SELECTION
Refer to the R22 CAPACITY selection (P.2) and select a condenser at the 1oF TD that will closely match the above Total THR Capacity (MBH/ 1oF TD).
4. ACTUAL CONDENSING TEMP (per circuit) CALCULATION ATD
First calculate the ATD (Actual TD) as follows: { THR (from sec. 2) / NF value} / value (B) = (Actual Temperature Difference)
To find the Actual Condensing Temperature (ACT) just add the Actual Temperature Difference (ATD) to the design ambient (AT)
NOTE: The Actual Condensing Temp. MUST EQUAL or BE LESS THAN the condensing temp recorded in section 1 above.
COND. MODEL #For the model selected, refer to P. 2 and enter...
calculate the number of feeds required for each circuit.
CL (MBH / 1o F TD) / (B) value= NF number of feeds required (round off to nearest whole #)
CIRC # 1/=
CIRC # 2/=
CIRC # 3/=
CIRC # 4/=
Total number of feeds required NF =
(must not exceed value (A))
If number of feeds required exceeds number of feeds available then select the next larger size
condenser model that can handle the number and repeat above process.
This ensures the compressor capacity is maintained when operating the condenser at the design ambient tremperature.
For further assistance please contact your local BALLY sales representative.
Max no. of Feeds =(A)
MBH @ 1oF TD per feed =(B)
o
F
o
F
o
F
o
F
- 27 -
Page 28
WORKSHEETS - SAMPLE SELECTION #1
Preliminary Data Given:
1. Evaporating temp = -20 oF
2. Condensing temp = 105 oF
3. Compressor capacity = 300,000 Btuh
4. Design ambient = 90 oF
Use WORKSHEET - SINGLE CIRCUIT (P 26) to complete selection of condenser
COMPR. CAPACITY (MBH) X HR fXALT fXREF f= THR (MBH)
3001.55
-20
F COND TEMP=
300,000
90
221
XXX=
105
o
F
300
(See P.2)
1
15
1
TC 1500
1
465
3. CONDENSER MODEL SELECTION
COND. MODEL #
4. ACTUAL CONDENSING TEMP CALCULATION
THR (from sec. 2)/ value (B)= ATD (actual Temperature Difference)
465
To find the Actual Condensing Temp. (ACT) just add the Actual Temperature Difference (ATD)
to the design Ambient Temperature (AT).
ATD+AT=ACT
14.5
BVC1A23067
/=
90
+=
32.165
104.5
For the model selected
record the THR PER 1oF TD value =(B) (see P. 2)
14.5 OF
o
F
32.165
Above selection using condenser model BVC1A23067 ensures condensing temperature will be at 105 oF or below during
design ambient conditions. See SAMPLE SELECTION # 2 for multiple circuit selections.
- 28 -
Page 29
WORKSHEETS - SAMPLE SELECTION # 2
Preliminary Data Given:
1. Location at Reno, Nevada, 95 oF design ambient and 4,000 feet elevation.
2. Multiple circuits required with evaporating temperatures, condensing temperatures, compressor capacities and
refrigerant types as listed below.
Use WORKSHEET-MULTIPLE CIRCUITS (P. 27) to complete selection of condenser.
Refer to the R22 CAPACITY selection (P. 2) and select a condenser at the 1oF TD that will closely match the above Total THR Capacity
(MBH/ 1oF TD).
COND. MODEL # For the model selected, refer to P. 2 and enter...
calculate the number of feeds required for each circuit.
CL (MBH / 1o F TD)/ (B) value= NF number of feeds required (round off to nearest whole #)
CIRC # 1/=
CIRC # 2/=
CIRC # 3/=
CIRC # 4/=
CIRC # 1CIRC # 2CIRC # 3CIRC # 4
+20
110
13
22
15
13
25
4.6
31.5
1.314
2.622
.799
5.733
95
4,000
(See P. 2)
BVC1A12022
CIRCUIT INFORMATION
+10
110
25
22
15
1.33
1.38
1.48
1.55
Max no. of Feeds =(A)
MBH @ 1oF TD per feed =(B)
.447
.447
.447
.447
1.14
1.14
1.14
1.14
TOTAL THR Capacity (MBH / 1 oF TD) =
(2.93) 3
(5.86) 6
(1.78) 2
(12.82) 13
-10
105
4.6
404A
10
1
1
1.03
1.03
JOB REF:
1.14
19.71
39.33
7.99
57.33
24
.447
TC2000
-20
105
31.5
404A
10
15
15
10
10
10.468
1.314
2.622
.799
5.733
Total number of feeds required NF =
(must not exceed value (A))
If number of feeds required exceeds number of feeds available then select the next larger size
condenser model that can handle the number and repeat above process.
4. ACTUAL CONDENSING TEMP (per circuit) CALCULATION
First calculate the ATD (Actual TD) as follows: {THR (from sec. 2) / NF value} / value (B) = ATD (Actual Temperature Difference)
To find the Actual Condensing Temperature (ACT) just add the Actual Temperature Difference (ATD) to the design ambient (AT)
CIRC # 1+=
CIRC # 2+=
CIRC # 3+=
CIRC # 4+=
19.71
39.33
7.99
57.33
ATD+AT=ACT
14.7
14.7
8.9
9.9
95
95
95
95
3
6
2
13
109.7
109.7
103.9
104.9
o
o
o
o
24
.447
.447
.447
.447
F
F
F
F
14.7
14.7
8.9
9.9
- 29 -
Page 30
LOW AMBIENT OPERATION
GENERAL
When a remote air cooled condenser is installed
outdoors, it will be subjected to varying temperatures. Within many areas, winter to summer annual
temperatures swings can be as high as 120 oF or
so, this will have a major impact on the performance of the condenser. As the ambient temperature
drops, the condenser capacity increases due to the
wider temperature difference between ambient and
condensing. As this happens, the condensing
temperature also drops as the system finds a new
balance point. Although the overall system capacity
will be higher at lower condensing temperatures,
other problems can occur. The capacity of an
expansion valve is affected by both the liquid
temperature entering the valve and the pressure
drop across it. As the condensing temperature
decreases, the pressure drop across the metering
device also decreases. A lower pressure drop
decreases the capacity of the valve. Although lower
liquid temperatures increase the capacity of the
metering device, the increase is not large enough to
offset the loss due to the lower pressure drop.
The following three sections cover the various
options used to control condensing temperatures.
(i) Fan Cycling
Cycling of the condenser fans helps control the
condensing temperature. With this approach to
solving low ambient problems, fans are taken
off-line either one at a time, or in pairs. It is not
recommended that multiple fan condensers cycle
more than two fans per step. The reason for this is
that the pressure in the condenser will increase
drastically as several fans are taken off-line at the
same time. This will result in erratic operation of the
refrigeration system and applies additional stress to
the condenser tubes. It is preferable to control the
condensing temperature as smoothly as possible.
Fans should be cycled independently on a
condenser where the fans are all in a single row.
On two row condensers, the fans should be cycled
in pairs.
Ambient temperature sensing controls can be set to
bring on certain fans when the outdoor temperature
reaches a predetermined setpoint. Pressure sensing controls are set to bring on certain fans when
the condensing pressure reaches the setpoint on
the control. Temperature or pressure setpoints and
differentials should be set in such a way as to
prevent short cycling of the fans. Constant short
cycling will produce a volatile condensing pressure
while decreasing the life of the fan motors.
For recommended fan cycling switch settings, refer
to Table 4. Differential settings on fan cycling
temperature controls should be about 5 oF (2.8 oC).
On fan cycling pressure controls, a differential of
approximately 35 psig is recommended.
On supermarket applications (using 6-12 Fan
models) condenser fans may be cycled individually
(not in pairs) and therefore lower differential settings
may apply and will depend on the specific
application.
Fans closest to the inlet header should be permitted
to run whenever the compressor is running. If these
initial fans are wired through a cycling control, the
life of the condenser may be shortened due to the
additional stress placed on the tubes and headers.
Table 3 shows the fan cycling options available for
all condenser models.
(ii) Variable Motor Speed Control
If additional head pressure control is required beyond
the last step of fan cycling variable fan motor speed
may be used. Variable motor speed is optional on all
condenser models. A varying motor speed may be
accomplished using a modulating temperature or
modulating pressure control. A variable speed
controller can be an electronic or solid state device
which varies the voltage going to the motor
depending on the temperature or pressure of the
medium being sensed.
(iii) Refrigerant Regulating Controls
Pressure regulating controls are available from a
number of valve manufacturers. The purpose of
such a control is to regulate the refrigerant flow in
such a way as to maintain a pre-selected
condensing pressure. In lower ambient temperatures, these valves throttle to maintain the desired
pressure and in doing so, flood the condenser with
liquid refrigerant.
The larger the condenser surface is, the higher its
capacity will be. When a condenser is flooded, its
useful condensing surface is reduced. This is
because the refrigerant occupies the space which
would otherwise be used for condensing.
Some control/check valve combinations will
regulate refrigerant flow depending on the pressure
at the inlet of the condenser.These are often referred
to as inlet regulators. As the valve closes, hot gas
bypasses the condenser through a differential
check valve to increase the pressure at the receiver.
- 30 -
Page 31
LOW AMBIENT OPERATION
DIFFERENTIAL
CHECK VALVE
SINGLE VALVE CONDENSER PRESSURE CONTROL
(Regulates inlet pressure or outlet pressure depending on valve design)
This will flood the condenser until the condensing
pressure increases to a point which will again open
the valve. Other valves regulate the refrigerant at the
outlet of the condenser to provide a similar effect.
These are commonly referred to as outletregulators. There are also combination inlet/outlet
regulators with a differential check valve or other
type of condenser bypass arrangement incorporated within the valve.
Controls which regulate the flow of refrigerant based
on condenser inlet pressure are typically used in
conjuction with a check valve having a minimum
opening differential across the condenser. Outlet
regulators typically require a check valve with a fixed
pressure differential setting of between 20 and 35
psi. The differential is needed to compensate for
pressure drop through the condenser during flooding and associated discharge piping.
Systems equipped with a condenser flooding
arrangement should always use a receiver having
sufficient liquid holding capacity. Additional liquid
required for flooding is only required during the
winter low ambients and must be stored
somewhere in the system at the higher ambients.
Failure to use an adequately sized receiver will
result in liquid back-up in the condenser during the
warmer summer months. This will cause the
system to develop very high pressures in the high
side resulting in a high pressure safety control trip.
ORI / ORD CONDENSER PRESSURE CONTROL
Determining Additional Flooded
Refrigerant Charge
Additional charge will vary with the condenser
design TD and the coldest expected ambient
temperature. Condensers designed for low TD
applications (low temperature evaporators) and
operating in colder ambients will require more
additional charge than those designed for higher TD
applications (high temperature evaporators) and
warmer ambients.
Refer to Table 5 to determine the required added
refrigerant charge at the selected TD and ambient
temperatures.
These charges are based on condensers using Fan
Cycling options with their last fan (Single Row Fan
Models) running or last pair of fans running (Double
Row Fan models).
WARNING: Do not over charge when charging by a
sightglass. Liquid lines feeding the TXV at the
evaporator must have a solid column of liquid (no
bubbles) however bubbles at the sightglass (located
adjacient to the receiver) may be normal due to the
result of a higher pressure drop at that point. Bubbles
could also appear in the glass whenever the
regulating valves start to flood the condenser.
Always record the number of drums or the weight of
refrigerant that has been added or removed in the
system. Overcharged systems may result in
compressor failure as well as other serious
mechanical damage to the system components.
- 31 -
Page 32
LOW AMBIENT OPERATION
TABLE 3 - FAN CYCLING CONTROL SCHEDULE
TABLE 4 - AMBIENT FAN CYCLING THERMOSTAT SETTINGS
Number of Fans on
CondenserDesign
Single Row
Models
24
36
48
510
612
Double Row
Models
T.D. oF (oC)
30 (16.7)
25 (13.9)
20 (11.1)
15 (8.3)
10 (5.6)
30 (16.7)
25 (13.9)
20 (11.1)
15 (8.3)
10 (5.6)
30 (16.7)
25 (13.9)
20 (11.1)
15 (8.3)
10 (5.6)
30 (16.7)
25 (13.9)
20 (11.1)
15 (8.3)
10 (5.6)
30 (16.7)
25 (13.9)
20 (11.1)
15 (8.3)
10 (5.6)
1st Stage2nd Stage3rd Stage4th Stage5th Stage
60 (15.6)
65 (18.3)
70 (21.1)
75 (23.9)
80 (26.7)
60 (15.6)
65 (18.3)
70 (21.1)
75 (23.9)
80 (26.7)
60 (15.6)
65 (18.3)
70 (21.1)
75 (23.9)
80 (26.7)
60 (15.6)
65 (18.3)
70 (21.1)
75 (23.9)
80 (26.7)
55 (12.8)
65 (18.3)
70 (21.1)
75 (23.9)
80 (26.7)
* NOTE: These are typical settings. Further adjustments may be necessary to suit actual field conditions.
Thermostat Setting * oF (oC)
40 (4.4)
55 (12.8)
60 (15.6)
65 (18.3)
75 (23.9)
50 (10.0)
55 (12.8)
65 (18.3)
70 (21.1)
75 (23.9)
55 (12.8)
60 (15.6)
65 (18.3)
70 (21.1)
75 (23.9)
50 (10.0)
60 (15.6)
65 (18.3)
70 (21.1)
75 (23.9)
30 (-1.1)
40 (4.4)
50 (10.0)
60 (15.6)
70 (21.1)
45 (7.2)
50 (10.0)
60 (15.6)
65 (18.3)
70 (21.1)
40 (4.4)
55 (12.8)
60 (15.6)
65 (18.3)
70 (21.1)
55 (12.8)
65 (18.3)
50 (10.0)
60 (15.6)
65 (18.3)
30 (-1.1)
35 (1.7)
40 (4.4)
30 (-1.1)
45 (7.2)
25 (-3.9)
35 (1.7)
40 (4.4)
50 (10.0)
60 (15.6)
- 32 -
Page 33
LOW AMBIENT OPERATION
TO DETERMINE WINTER CHARGE, ADD THE SUM OF THE NORMAL CHARGE
Note: For R134a and R502 use R22 charge
For R404A and R507 use R22 charge x 0.87
For R407C use R22 charge x 0.97
For R12 use R22 charge x 1.10
For 90% full volume charge see P. 4
4.0
5.9
7.6
10
12
15
13
20
24
27
31
27
33
39
46
56
65
80
100
116
114
145
154
177
53
61
66
76
70
82
96
110
111
129
164
200
235
228
294
308
358
2.5
3.7
4.8
6.4
7.4
9.3
4.0
6.0
7.0
9.0
12
15
18
19
22
3.1
3.5
3.7
3.8
2.0
2.8
3.2
3.4
4.6
5.1
5.4
5.6
3.0
4.1
6.0
6.6
7.0
7.2
7.9
8.8
10
13
9.4
14
17
19
22
17
20
24
28
35
40
43
54
63
48
60
29
33
37
43
47
53
43
51
59
68
69
80
88
108
127
9.3
11
14
11
16
19
21
25
20
25
29
34
42
49
57
71
82
75
95
88
101
42
49
53
61
53
62
72
82
83
97
116
142
167
149
192
176
205
9.3
12
7.5
11
13
15
18
0
11
0
13
0
15
0
18
0
22
0
26
0
14
0
18
0
20
0
0
0
0
0
0
0
0
30
34
37
43
0
28
0
32
0
38
0
43
0
44
0
51
0
29
0
35
0
41
3.8
9.6
5.1
11
6.0
14
7.4
12
0
17
0
21
0
23
0
28
0
23
0
28
0
33
0
38
0
47
0
55
0
66
0
82
0
95
0
91
0
115
0
116
0
133
0
46
0
53
0
58
0
66
0
59
0
69
0
81
0
92
0
94
0
109
0
135
0
164
0
193
0
181
23300002330
232
270000000
5.3
7.0
8.3
10
5.1
7.6
9.2
10
12
2.6
3.2
3.8
4.4
20
23
25
29
6.8
8.0
9.3
12
11
11
4.7
6.1
8.1
9.5
12
7.6
11
14
15
18
12
15
18
21
6
25
6
29
0
19
0
24
0
27
0
12
0
15
0
0
0
0
30
35
38
43
32
37
43
50
50
58
0
38
0
47
0
55
5.1
6.6
8.7
10
13
9.2
14
14
18
22
17
20
24
28
35
40
42
52
60
55
70
54
62
36
42
45
52
43
51
59
68
69
80
85
103
121
109
141
108
126
3.6
5.4
6.9
9.2
11
13
10
15
18
21
24
20
24
28
33
41
47
53
67
77
75
95
92
105
41
47
51
58
51
60
70
80
81
94
109
133
157
149
192
183
213
- 33 -
Page 34
LOW AMBIENT OPERATION
TO DETERMINE WINTER CHARGE, ADD THE SUM OF THE NORMAL CHARGE
Note: For R134a and R502 use R22 charge
For R404A and R507 use R22 charge x 0.87
For R407C use R22 charge x 0.97
For R12 use R22 charge x 1.10
For 90% full volume charge see P. 4
- 34 -
Page 35
INSTALLATION
INSPECTION
A thorough inspection of the equipment, including all component parts and accessories, should be made immediately
upon delivery. Any damage caused in transit, or missing
parts, should be reported to the carrier at once. The consignee is responsible for making any claim for losses or
damage. Electrical characteristics should also be checked
at this time to ensure that they are correct.
LOCATION
Before handling and placing the unit into position a review of
the most suitable location must be made. This
condenser is designed for outdoor installation.
A number of factors must be taken into consideration
when selecting a location. Most important is the provision
for a supply of ambient air to the condenser, and removal
of heated air from the condenser area.
Higher condensing temperatures, decreased
performance, and the possibility of equipment failure
may result from inadequate air supply.
Other considerations include:
1. Customer requests
2. Loading capacity of the roof or floor.
3. Distance to suitable electrical supply.
4. Accessibility for maintenance.
5. Local building codes.
6. Adjacent buildings relative to noise levels.
WALLS OR OBSTRUCTIONS
All sides of the unit must be a minimum of 4 feet
(1.25 m) away from any wall or obstruction. Overhead
obstructions are not permitted. If enclosed by three
walls, the condenser must be installed as indicated for
units in a pit.
4 ft
(1.25 m)
min.
UNITS IN PITS
The top of the condenser must be level with, or above the
top of the pit. In addition, a minimum of 8 feet
(2.5 m) is required between the unit and the pit walls.
8 ft
(2.5 m)
min
8 ft
(2.5 m)
min
MULTIPLE UNITS
A minimum of 8 feet (2.5 m) is required between
multiple units placed side by side. If placed end to end,
the minimum distance between units is 4 feet (1.25 m).
8 ft
(2.5 m)
min
LOUVERS/FENCES
Louvers/fences must have a minimum of 80% free area
and 4 feet (1.25 m) minimum clearance between the
unit and louvers/fence. Height of louver/fence
must not exceed top of unit.
4 ft
(1.25 m)
min.
4 ft
(1.25 m)
min.
PLACEMENT
Once a suitable location is selected ensure all the remote
mounting parts (legs and hardware) are available. Refer to
Fig.1 (P. 36) and the dimensional data on pages 6 and 7
for the leg mounting locations. On 8, 10 and 12 fan
models a 90” (2.3 m) channel is also included for
maximum support. Single row 4, 5 and 6 fan models use
a 45” (1.15m) channel.
- 35 -
Page 36
LEG INSTALLATION INSTRUCTIONS
INSTALLATION
Fig. 1
CORNER LEG
CENTRE LEG
WITH SUPPORT
CHANNEL
(RIGHT HAND SIDE SHOWN) USED ON
CONDENSERS LONGER THAN 177” 4500 mm)
Air cooled condensers are large, heavy mechanical equipment and must be handled as such. A fully qualified and
properly equipped crew with necessary rigging should be
engaged to set the condenser into position.
Lifting brackets or holes have been provided at the
corners for attaching lifting slings. Spreader bars must be
used when lifting so that the lifting force must be applied
vertically. See Fig. 2. Under no circumstances should
the coil headers or return bends be used in lifting or
moving the condenser.
Fig. 2
1) Assemble R.H. center leg L.H. center leg and 90” (or 45” on single
row) channel as shown.
Remove 2 bolts from bottom flange of unit side panels that match the
hole pattern on the top flanges of both legs. Attach center leg and
channel assembly using hardware provided at divider panel locations
required for applicable model as shown in dimensional data.
Replace bolts that were removed from side panels to secure leg
assembly to bottom flanges of side panels.
2) Assemble four corner legs to bottom flanges on unit side panels and
end panels using hardware provided, at matching mounting hole
patterns. All corner legs are the same.
to standard refrigeration tubing.These connections may not
be the same as the actual line sizes required for the field
installation. Refer to a recognized source (ASHRAE charts,
manufacturer’s engineering manuals etc.) for line sizing.
DISCHARGE LINES
The proper design of discharge lines involves following
objective:
(1) to minimize refrigerant pressure drop, since high
pressure losses increase the required compressor
horsepower per ton of refrigeration.
Discharge lines must be pitched away from the compressor
to ensure proper drainage of oil being carried in the line.
A discharge check-valve at the bottom of a vertical riser will
prevent oil (and liquid refrigerant) from draining back to the
compressor during the off-cycle. When the vertical lift
exceeds 30 feet (9 m), insert close-coupled traps in the
riser at 30 feet (9 m) intervals.
Ensure the unit is placed in a level position (to ensure
proper drainage of liquid refrigerant and oil). The legs
should be securely anchored to the building structure,
sleeper or concrete pad. The weight of the condenser is not
enough to hold in place during a strong wind, the
legs must be anchored.
REFRIGERANT PIPING
All refrigeration piping must be installed by a qualified
refrigeration mechanic. The importance of correct
refrigerant pipe sizing and layout cannot be overemphasized. Failure to observe proper refrigerant piping
practices can result in equipment failure which may not be
covered under warranty.
All air cooled condensers are supplied complete with
headers and refrigerant connections sized for connecting
An alternate method of handling the oil problem would be
the addition of an oil separator see Figure 4 (b).
A reverse trap should be installed at the top of all vertical
risers. The top of the reverse trap should be the highest
point in the discharge line and should have an access
valve installed to allow the reclaimation of non-condensible
gas from the system.
Pulsation of the hot gas in the discharge line is an inherent
characteristic of systems utilizing reciprocating
compressors. The discharge line must be rigidly supported
along its entire length to prevent transmission of vibration
and movement of the line.
CONDENSATE LINES
The condensate line must be designed to allow free
drainage of refrigerant from the condenser coil to the
receiver. Refer to Fig. 5 for typical condensate line piping
when utilizing head pressure regulating valves.
- 36 -
Page 37
INSTALLATION
Fig. 3 - 6
Figure 3 - Single Circuit
Figure 5 - Single circuit regulator valve
head pressure control
BVC TYPICAL SYSTEM PIPING
Figure 4(a) - Single circuit with
double discharge riser
(may be required with
capacity control)
Figure 6 - Multiple circuits
Figure 4(b) - Single circuit with
Oil Separator (may be
required with capacity
control)
15
LEGEND
1 - Compressor
2 - Air Cooled Condenser
3 - Receiver
4 - Condensate Line
5 - Discharge Line
6 - Trap-minimum 18” (157 mm)
7 - Reverse Trap-minimum
All wiring and connections to the air cooled condenser
must be made in accordance with the National Electrical
Code and all local codes and regulations. Any wiring
diagrams shown are basic and do not necessarily
include electrical components which must be field
supplied. (see pages 8-11 for typical wiring diagrams).
Refer to the Electrical Specifications table on pages 5, 15
and 19 for voltage availability and entering service
requirements.
SYSTEM START-UP CHECKS
1. Check the electrical characteristics of all components
to be sure they agree with the power supply.
2. Check tightness of all fans and motor mounts.
3. Check tightness of all electrical connections.
4. Upon start-up, check fans for correct rotation. Air is
drawn through the condenser coil. To change rotation
on 3 phase units reverse any two (2) fan motor leads.
5. All system piping must be thoroughly leak checked
before a refrigerant charge is introduced.
MAINTENANCE
A semi annual inspection should be carried out by a
qualified refrigeration service mechanic. The main power
supply must be disconnected.
1. Check electrical components. Tighten any loose
connections.
2. Check control capillary tubes and lines for signs of wear
due to excessive vibration or rubbing on metal parts.
Secure if necessary.
3. Check tightness of all fans and motor mounts. Remove
any deposits which could effect fan balance. Note: Fan
motors are permanently lubricated and require only
visual inspection.
4. Clean the condenser coil using a soft brush or by
flushing with cool water or coil cleansers available
through NRP (National Refrigeration Products Inc.)
5. Update service log information (back page of service
manual)
20" CORNER LEG
20" LEFT HAND CENTRE LEG
20" RIGHT HAND CENTRE LEG
90" SUPPORT RAIL - DOUBLE ROW
45" SUPPORT RAIL - SINGLE ROW
35" WIDE FAN SECTION
45" WIDE FAN SECTION
ALL1043295
ALL106098
UP TO 144" LONG MODELS
138" LONG AND OVER MODELS
ALL1048603
ALL
144" LONG AND OVER MODELS
144" LONG AND OVER MODELS
144" LONG AND OVER MODELS
144" LONG AND OVER MODELS
* Fan motor service kit part number with - 001 suffix includes a rain shield and slinger.
1046500
1046502
1048739
1048738
106025
107024-001
107024-002
107025
1065906
- 38 -
Page 39
NOTES
- 39 -
Page 40
SERVICE PARTS LIST
01/06/2001
Service Parts List
Label
To Be Attached
HERE
PROJECT INFORMATION
System
Model NumberDate of Start-Up
Serial NumberService Contractor
RefrigerantPhone
Electrical SupplyFax
General Sales, Parts & ServiceGeneral Sales, Parts & Service
Manufacturing & EngineeringManufacturing & Engineering
11 35 Little Nine Drive, Morehead City, NC 2855735 Little Nine Drive, Morehead City, NC 28557
252252-240-2829 • FAX: -240-2829 • FAX: 252252-240-0384-240-0384
61 BROADWAY • SUITE 1900 • NEW YORK, NY 10006-2701
PHONE: 212-898-9699 • 212-514-9230
Fax: 212-514-9234 • Alt. Fax: 212-898-9634
e-mail: bmil@bmil.com • www.bmil.com
A Division of Balmac International Inc.
Due to Manufacturer’s policy of continuous product improvement, the Manufacturer reserves the right to make changes without notice.
MEA
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