Fan User Manual
38
Table 34 – MCA/MOCP DETERMINATION W/ PWRD C.O.
UNIT
V --- P H --- H Z
IFM
TYPE
ELECTRIC HEATER NO C.O. or UNPWRD C.O.
kW FLA
NO P.E. w/ P.E. (pwrd fr/unit)
MCA MOCP
DISC. SIZE
MCA MOCP
DISC. SIZE
FLA LRA FLA LRA
558J*06
208/230---1--- 60
STD
--- --- 39.2 60 37 150 41.1 60 40 152
4.9/6.5 23.5/27.1 39.2/40.0 60/60 37/37 150/150 41.1/42.4 60/60 40/40 152/152
6.5/8.7 31.4/36.3 45.4/51.5 60/60 42/47 150/150 47.8/53.9 60/60 44/50 152/152
9.8/13.0 46.9/54.2 64.8/73.9 70/80 60/68 150/150 67.1/76.3 70/80 62/70 152/152
13.1/17.4 62.8/72.5 84.6/96.8 90/100 78/89 150/150 87.0/99.1 90/100 80/91 152/152
15.8/21.0 75.8/87.5 100.9/115.5 110/125 93/106 150/150 103.3/117.9 110/125 95/108 152/152
MED
--- --- 41.3 60 40 175 43.2 60 42 177
4.9/6.5 23.5/27.1 41.3/42.6 60/60 40/40 175/175 43.2/45.0 60/60 42/42 177/177
6.5/8.7 31.4/36.3 48.0/54.1 60/60 44/50 175/175 50.4/56.5 60/60 46/52 177/177
9.8/13.0 46.9/54.2 67.4/76.5 70/80 62/70 175/175 69.8/78.9 70/80 64/73 177/177
13.1/17.4 62.8/72.5 87.3/99.4 90/100 80/91 175/175 89.6/101.8 90/110 82/94 177/177
15.8/21.0 75.8/87.5 103.5/118.1 110/125 95/109 175/175 105.9/120.5 110/125 97/111 177/177
208/230---3--- 60
STD
--- --- 25.9 30 25 126 27.8 40 27 128
4.9/6.5 13.6/15.6 25.9/25.9 30/30 25/25 126/126 27.8/28.0 40/40 27/27 128/128
7.9/10.5 21.9/25.3 33.5/37.8 40/40 31/35 126/126 35.9/40.1 40/45 33/37 128/128
12.0/16.0 33.4/38.5 47.9/54.3 50/60 44/50 126/126 50.3/56.6 60/60 46/52 128/128
15.8/21.0 43.8/50.5 60.9/69.3 70/70 56/64 126/126 63.3/71.6 70/80 58/66 128/128
19.9/26.5 55.2/63.8 75.1/85.9 80/90 69/79 126/126 77.5/88.3 80/90 71/81 128/128
MED
--- --- 26.2 40 26 144 28.1 40 28 146
4.9/6.5 13.6/15.6 26.2/26.2 40/40 26/26 144/144 28.1/28.4 40/40 28/28 146/146
7.9/10.5 21.9/25.3 33.9/38.1 40/40 31/35 144/144 36.3/40.5 40/45 33/37 146/146
12.0/16.0 33.4/38.5 48.3/54.6 50/60 44/50 144/144 50.6/57.0 60/60 47/52 146/146
15.8/21.0 43.8/50.5 61.3/69.6 70/70 56/64 144/144 63.6/72.0 70/80 59/66 146/146
19.9/26.5 55.2/63.8 75.5/86.3 80/90 69/79 144/144 77.9/88.6 80/90 72/82 146/146
HIGH
--- --- 28.5 40 28 170 30.4 45 30 172
4.9/6.5 13.6/15.6 28.5/28.9 40/40 28/28 170/170 30.4/31.3 45/45 30/30 172/172
7.9/10.5 21.9/25.3 36.8/41.0 40/45 34/38 170/170 39.1/43.4 45/45 36/40 172/172
12.0/16.0 33.4/38.5 51.1/57.5 60/60 47/53 170/170 53.5/59.9 60/60 49/55 172/172
15.8/21.0 43.8/50.5 64.1/72.5 70/80 59/67 170/170 66.5/74.9 70/80 61/69 172/172
19.9/26.5 55.2/63.8 78.4/89.1 80/90 72/82 170/170 80.8/91.5 90/100 74/84 172/172
4 6 0 --- 3 --- 6 0
STD
--- --- 12.5 20 12 60 13.5 20 13 61
6.0 7.2 12.5 20 12 60 13.5 20 13 61
11.5 13.8 19.9 20 18 60 21.1 25 19 61
14.0 16.8 23.6 25 22 60 24.9 25 23 61
23.0 27.7 37.3 40 34 60 38.5 40 35 61
25.5 30.7 41.0 45 38 60 42.3 45 39 61
MED
--- --- 13.0 20 13 69 14.0 20 14 70
6.0 7.2 13.0 20 13 69 14.0 20 14 70
11.5 13.8 20.5 25 19 69 21.8 25 20 70
14.0 16.8 24.3 25 22 69 25.5 30 23 70
23.0 27.7 37.9 40 35 69 39.1 40 36 70
25.5 30.7 41.6 45 38 69 42.9 45 39 70
HIGH
--- --- 13.8 20 14 82 14.8 20 15 83
6.0 7.2 13.8 20 14 82 14.8 20 15 83
11.5 13.8 21.5 25 20 82 22.8 25 21 83
14.0 16.8 25.3 30 23 82 26.5 30 24 83
23.0 27.7 38.9 40 36 82 40.1 45 37 83
25.5 30.7 42.6 45 39 82 43.9 45 40 83
5 7 5 --- 3 --- 6 0
STD --- --- 9.8 15 10 46 11.7 15 12 48
MED --- --- 10.7 15 11 63 12.6 15 13 65
HIGH --- --- 10.7 15 11 63 12.6 15 13 65
LEGEND:
CO --- Convenient outlet
DISC --- Disconnect
FLA --- Full load amps
IFM --- Indoor fan motor
LRA --- Locked rotor amps
MCA --- Minimum circuit amps
MOCP --- Maximum over current protection
P E --- Po w e r e x h a u st
UNPWRD CO --- Unpowered convenient outlet
NOTES:
1. In compliance with NEC requirements for mu ltimotor and combina-
tion l oa d equipment (refer to NEC Articles 430 and 440), the
overcurrent protective device for the unit shall be fuse or HACR
breaker. Canadian units may be fuse or circuit breaker.
2. Unbalanced 3-Phase Supply Voltage
Never operate a motor where a phase imbalance in supply voltage
is greater than 2%. Use the following formula to determine the
percentage of voltage imbalance.
% Voltage Imbalance = 100 x
max voltage de viation from average voltage
average voltage
Example: Su pply voltage is 230-3-60
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage =
(224 + 231 + 226)
=
681
3
3
= 227
Determine maximum deviation from average voltage.
(AB) 227 – 224 = 3 v Maximum deviation is 4 v.
(BC) 231 – 227 = 4 v Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
4
227
= 1.76%
This amount of phase imbalance is satisfactory as it is below the maximum
allowable 2%.
IMPORTANT: If the supply vol tage phase imbalance is more than 2%, con-
tact your local electric utility company immediately.
558J