EHK Installation Manual

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Specifications are subject to change without notice
ELECTRIC HEATER ELECTRICAL DATA
Heater Model
Heater kW
PHASE
INTERNAL
CIRCUIT
PROTECTION
HEATER AMPS
208/230V
BRANCH CIRCUIT
Min Ampacity k
208/230V
Min Wire Size (AWG)
208/230V
1
Min Gnd Wire Size
208/230V
Max Fuse/Ckt Bkr Amps
208/230V
Max Wire Length
208/230V (Ft)‡‡
Single
Circuit
Dual Circuit
Single
Circuit
Dual Circuit
Single
Circuit
Dual Circuit
Single
Circuit
Dual Circuit
Single
Circuit
Dual Circuit
Single
Circuit
Dual Circuit
230v 208v L1,l2 L3,L4 L1,L2 L3,L4 L1, L2 L3, L4 L1, L2 L3,L4 L1,L2 L3,L4 L1,L2 L3,L4
EHK05AKN*
5 3.8 1 None 18.1/20.0 — — 26.0/28.4 — — 10/10 — — 10/10 — — 30/30 — — 66/66 — —
EHK05AKN**
5 3.8 1 None 18.1/20.0 — — 31.2/33.5 — — 8/8 — — 10/10 — — 35/35 — — 85/88 — —
EHK05AKB*
5 3.8 1 Ckt Bkr 18.1/20.0 — — 26.0/28.4 — — 10/10 — — 10/10 — — 30/30 — — 66/66 — —
EHK05AKB**
5 3.8 1 Ckt Bkr 18.1/20.0 — — 31.2/33.5 — — 8/8 — — 10/10 — — 35/35 — — 85/88 — —
EHK07AKN
8 6.0 1 None 28.9/32.0 — — 44.7/48.5 — — 8/8 — — 10/10 — — 45/50 — — 59/60 — —
EHK07AKB
8 6.0 1 Ckt Bkr 28.9/32.0 — — 44.7/48.5 — — 8/8 — — 10/10 — — 45/50 — — 59/60 — —
EHK09AKCN{
9 6.8 1 None 32.8/36.0 — — 49.5/53.5 — — 8/6 — — 10/10 — — 50/60 — — 54/87 — —
9 6.8 3 None 18.8/20.8 — — 32.0/34.5 — — 8/8 — — 10/10 — — 35/35 — — 83/85 — —
EHK10AKN
10 7.5 1 None 36.2/40.0 — — 53.8/58.5 — — 6/6 — — 10/10 — — 60/60 — — 78/80 — —
EHK10AKB
10 7.5 1 Ckt Bkr 36.2/40.0 — — 53.8/58.5 — — 6/6 — — 10/10 — — 60/60 — — 78/80 — —
EHK15AKF
15 11.3 1 Fuse 54.2/59.9 36.2/40.0 18.1/20.0 76.3/83.4 53.8/58.5 22.7/25.0 4/4 6/6 10/10 8/8 10/10 10/10 80/90 60/60 25/25 88/89 78/80 75/76
EHK15AKB
15 11.3 1 Ckt Bkr — 36.2/40.0 18.1/20.0 — 53.8/58.5 22.7/25.0 — 6/6 10/10 — 10/10 10/10 — 60/60 25/25 — 78/80 75/76
EHK15AHN
15 11.3 3 None 31.3/34.6 — — 47.7/51.8 — — 8/6 — — 10/10 — — 50/60 — — 56/90 — —
EHK18AHN
18 13.5 3 None 37.6/41.5 — — 55.5/60.4 — — 6/6 — — 10/8 — — 60/70 — — 76/77 — —
EHK20AKF
20 15.0 1 Fuse 72.3/79.9 36.2/40.0 36.2/40.0 98.9/108.4 53.8/58.5 45.3/50.0 3/2 6/6 8/8 8/6 10/10 10/10 100/110 60/60 50/50 85/109 78/80 59/59
EHK20AKB
20 15.0 1 Ckt Bkr — 36.2/40.0 36.2/40.0 — 53.8/58.5 45.3/50.0 — 6/6 8/8 — 10/10 10/10 — 60/60 50/50 — 78/80 59/59
EHK25AHCF}
24 18.0 3 Fuse 50.1/55.4 — — 71.2/77.8 — — 4/4 — — 8/8 — — 80/80 — — 94/95 — —
24 18.0 1 Fuse 86.7/95.5 — — 116.9/127.9 — — 1/1 — — 6/6 — — 125/150 — — 115/116 — —
EHK30AHCF}
30 22.5 3 Fuse 62.6/69.2 — — 86.8/95.0 — — 3/3 — — 8/8 — — 90/100 — — 97/98 — —
30 22.5 1 Fuse 109.0/120.0 — — 144.8/158.5 — — 0/00 — — 6/6 — — 150/175 — — 117/150 — —
FIELD MULTIPOINT WIRING OR 24 AND 30 KW SINGLE PHASE
Heater Model
Heater kW
P
H
A
S
E
Heater Amps 208/230V
Minimum Circuit Ampacity
208/230V k
Minimum Wire Size (AWG)
208/230V}
Min Gnd
Wire Size
208/230V
Max Fuse/Ckt Bkr Amps
208/230V
Max Wire Length 208/230V
(FT)}}
L1, L2 L3, L4 L5, L6 L1, L2 L3, L4 L5, L6 L1, L2 L3, L4 L5, L6 L1, L2 L3, L4 L5, L6 L1, L2 L3, L4 L5, L6
230V 208V
EHK25AHCF} 24 18.0 1 28.9/32.0 28.9/32.0 28.9/32.0 44.7/48.5 36.2/40.0 36.2/40.0 8/8 8/8 8/8 10/10 45/50 40/40 40/40 59/60 73/73 73/73
EHK30AHCF} 30 22.5 1 36.2/40.0 36.2/40.0 36.2/40.0 53.8/58.5 45.3/50.0 45.3/50.0 6/6 8/8 8/8 10/10 60/60 50/50 50/50 78/80 59/59 59/59
Notes:
1
Copper wire must be used. If other than uncoated (non-plated), 75° C ambient, copper wire (solid wire for 10 AWG and smaller, stranded wire for larger than 10 AWG) is used, consult applicable tables of the National
Electric Code (ANSI/NFPA 70).
* When used with Fan Coil model sizes 2400, 3600.
** When used with Fan Coil model sizes 4200, 4800.
k Includes blower motor amps of largest Fan Coil used with heater.
{ Supplied as single phase, field convertible to 3-phase.
} Supplied as 3-phase, field convertible to single phase, single or multiple supply circuits.
}} Length shown is as measured one way along wire path between unit and service panel for a voltage drop not to exceed 2%.