Russell VAC 102 User Manual

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AIR COOLED CONDENSER

MULTIPLE SYSTEM WORKSHEET

Form MC-4

DATE

ell

CUSTOMER ________________________ PHONE ______________________________

LOCATION __________________________ PURCHASE ORDER ___________________

221 S. BERRY STREET • BREA, CALIFORNIA 92621 (714) 529-1935 • (213) 691-3246 • FAX (714) 529-7203

(A) (B) (C) (D) (E) X (F) X (G) ÷ (H) = (I) ÷ (J) = (K) (L) (M)

SYST.

NO.

X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ = X X ÷ = ÷ =

** REFER TO AIR COOLED CONDENSER BULLETIN ** UNIT IS CIRCUITED IN SEQUENCE FROM

LEFT TO RIGHT - FACING HEADER END.

** FORMULA REFERENCE:

a. (E)X(F)X(G) + (H)-(I) b. (I) + (J)=(K) c. (M)-(H)X(K) + (L)

REFR.

TYPE

400.5 FOR ANY ADDITIONAL INFORMATION.

EVAP.

TEMP

COND TEMP

COMP.CAP.

BTUH NRE

DESIGN AMBIENT: Summer (Max.)°F ____________

COMP. HEAT

REJ. FACT

(Table 1 or 2)

ALTITUDE

CORR. FACTOR (Table 3)

TOTAL REQ'D THR

DESIGN

T.D.

CORRECTED

THR

BTHU/1°T.D.

SELECT MODEL _____________________ _ VOLTAGE/PHASE ____________/_________ FAN CYCLE CONTROL ________________ FLOODED CONTROL __________________ COATED FINS________________________

BUTH/1°T.D.

CAP. PER

CIRCUIT

(Table 4)

Winter (Min.) °F _______________

NO. CIRC.

REQ'D

TOTAL CIRC.

ASSIGNED

NO. CIRC. AVAILABLE

(TABLE 4)

LIST PRICE

NO. CIRC.

ASSIGNED

ACTUAL

T.D.

MULTI-CIRCUITING SELECTION PROCEDURE

1. Enter Design Ambient Temperature.

2. Tabulate customer data in columns A,B,C,D and E.

3. From table 1 or 2 select Compressor Heat Rejection Factor

and enter in column F.

4. Enter altitude correction factor.

5. Enter Design Temperature Difference in column H (Design

TD = Cond.. Temp. minus Design. Amb.)

6. Perform multiplications and division of columns E, F, G and

7. Enter results in column I (corrected THR/10 TD)

8. Total column I and enter the result in the box below it.

9. Using the total, select model no. from table 4 that has closest

THR to that required. (Selection of a sma ll er mo d e l w i ll result in higher condensing temperatures. Selection of a larger model will result in lower condensing temperatures). Enter model and no. of circuits.

10. Locate model selected in table 4 and enter capacity per circuit

in column J.

11. Divide column I by J to get circuits required and enter in

column K.

12. Assign numbers of circuits for each system. If the decimal

part of the circuit required is 10% (or less) of the whole number, drop the decimal and enter the whol e number in column L. When decimal is greater than 10% of the whole number, round off to the next whole num ber.

Example: If 2.3 circuits required:

.3 is greater than 10% of the whole number 2

- assign 3 circuits.

or: If 26.8 circuits required:

.8 is less than 10% of whole number 2

- assign 26 circuits

13. Total column L, enter into box below and compare it to the number of circuits available on selected model. If the total number of circuits assigned exceeds the number available for the selected model, it will be necessary to permit a slightly higher condensing temperature than specified for one or two of the systems. Note: Another alternative is to select the next larger size unit and recalculate columns J, K and L.

14. Actual TD (M) = Design TD (H) x No. Circuits Required (K)

No Circuits Assigned (L)

HEAT REJECTION FACTORS-OPEN COMPRESSOR

EVAP. TEMP.

-40° 1.45 1.48 1.52 1.56 1.58 1.61

-35° 1.42 1.45 1.47 1.51 1.54 1.57

-30° 1.39 1.41 1.44 1.47 1.50 1.53

-25° 1.37 1.39 1.41 1.44 1.46 1.49 1.52

-20° 1.34 1.37 1.39 1.41 1.43 1.45 1.48 1.51

-15° 1.31 1.34 1.37 1.38 1.40 1.42 1.45 1.47

-10° 1.28 1.31 1.33 1.37 1.38 1.40 1.42 1.45

0° 1.24 1.28 1.29 1.32 1.33 1.35 1.38 1.41

10° 1.21 1.24 1.26 1.28 1.30 1.31 1.34 1.36 20° 1.18 1.21 1.23 1.24 1.26 1.28 1.30 1.32 30° 1.15 1.18 1.20 1.21 1.23 1.24 1.26 1.28 40° 1.13 1.15 1.17 1.18 1.19 1.20 1.22 1.24

50° 1.11 1.13 1.14 1.15 1.16 1.17 1.18 1.20

CONDENSING TEMPERATURE

90° 100° 105° 110° 115° 120° 125° 130°

TABLE 2

TABLE 1

HEAT REJECTION FACTORS-SUCTION COOLED COMPRESSOR

EVAP.

90° 100°

TEMP.

-40° 1.67 1.71 1.75 1.79 1.84 1.90

-35° 1.63 1.67 1.70 1.73 1.78 1.83

-30° 1.58 1.62 1.65 1.68 1.72 1.77

-25° 1.54 1.58 1.60 1.64 1.67 1.71 1.76

-20° 1.49 1.53 1.56 1.58 1.63 1.66 1.70 1.75

-15° 1.46 1.50 1.52 1.54 1.58 1.62 1.65 1.69

-10° 1.42 1.46 1.48 1.50 1.53 1.57 1.62 1.64

0° 1.36 1.40 1.42 1.44 1.47 1.50 1.54 1.56

10° 1.31 1.34 1.36 1.38 1.40 1.43 1.47 1.49 20° 1.26 1.29 1.31 1.33 1.35 1.37 1.40 1.43 30° 1.22 1.25 1.26 1.28 1.30 1.32 1.35 1.37 40° 1.18 1.21 1.22 1.24 1.25 1.27 1.30 1.32 50° 1.14 1.17 1.18 1.20 1.21 1.23 1.25 1.27

CONDENSING TEMPERATURE

110°

105°

115° 120° 125° 130°

TABLE 3

ALTITUDE CORRECTION FACTOR (FT)

ALTITUDE SEA LEVEL 1000' 2000' 3000' 4000'

FACTOR 1.0 1.029 1.052 1.076 1.101

ALTITUDE CORRECTION FACTOR (FT)

ALTITUDE 5000' 6000' 7000' 8000' 9000'

FACTOR 1.125 1.151 1.177 1.204 1.231

MODEL CAP.PER CRC AT 1°TD

RAC 3/4 420 12 35 37 36 RAC 1 540 12 45 47 46 RAC 1 1/2 780 12 65 68 67 RAC 2 1000 12 83 88 86

RAC 3 1460 12 122 128 126 VAC 5 2580 30 86 90 89 VAC 6 2836 30 94 99 97

VAC 7 3530 22 118 124 121 VAC 8 4210 30 140 147 145 VAC 9 4530 30 151 159 156 VAC 11 5430 30 181 190 187 VAC 13 7140 22 238 250 246 VAC 15 7520 22 251 263 259 VAC 17 8850 30 295 310 304 VAC 19 9330 25 311 327 321

VAC 22 11200 22 509 535 525 VAC 25 12000 22 545 573 563

VAC 29 13000 22 591 621 610 VAC 31 14500 30 483 508 499 VAC 35 17000 25 680 714 702 VAC 42 19500 22 886 931 915 VAC 48 21800 30 727 763 750 VAC 55 24200 25 968 1017 999 VAC 58 26000 22 1182 1241 1220 VAC 62 29000 30 967 1015 998 VAC 67 32200 25 1288 1353 1329 VAC 72 34000 25 1360 1429 1404

VAC 59 26000 (2)-22 591 621 610 VAC 63 29000 (2)-30 483 508 499

VAC 68 32200 (2)-25 644 676 665 VAC 73 34000 (2)-25 680 714 702 VAC 83 39000 (2)-22 886 931 915 VAC 95 44500 (2)-30 742 779 765 VAC 102 48300 (2)-25 966 1015 997 VAC 116 52000 (2)-22 1182 1241 1220 VAC 127 58000 (2)-30 967 1015 998 VAC 134 64400 (2)-25 1288 1353 1329 VAC 144 68000 (2)-25 1360 1429 1404

TOTAL

UNIT THR

BTUH/1°

MAX.

CIR.

QTY.

R-12 R-22 R-502

BTUH/

CIRCUIT

BTUH/

CIRCUIT

BTUH/

CIRCUIT

CAPACITIES ARE BASED AT 1°F TD.

TABLE 4