Submittal Sheet
Series Three
Series Three Residential/Commercial
For Commercial and Industrial Applications
Specifications
Electric Tankless Hot Water Heater
TEMPERATURE RISE °F
MODEL NUMBER
kW
AMPS
RECOMMENDED
WIRE SIZE (CU)
2.5
GPM
3.0
GPM
4.0
GPM
5.0 GPM
T3 ONLY
VOLTS 240*
C
EX280T2T
28.5 120(3X40)A 8 AWG per module 76° 65° 49° –
C EX280T2T (derated 208V performance) 20.9 100(3X33)A * 57° 48° 36° –
C
EX280T2T ML
28.5 120(3X40)A 8 AWG per module 76° 65° 49° –
C
EX280T2T FS
28.5 120(3X40)A 8 AWG per module 76° 65° 49° –
C
EX280T2T S
28.5 120(3X40)A 8 AWG per module 76° 65° 49° –
C
EX280T3
28.5 120(3X40)A 8 AWG per module 76° 65° 49° 38°
C EX280T3 (derated 208V performance) 20.9 100(3x33)A * 57° 48° 36° 49°
C
EX280T3 S
28.5 120(3X40)A 8 AWG per module 76° 65° 49° 38°
C
EX280T3 FS
28.5 120(3X40)A 8 AWG per module 76° 65° 49° 38°
CNL Models
C
EX280T2T CNL
28.5 120 A 1 AWG 76° 65° 49° –
C
EX280T2T ML CNL
28.5 120 A 1 AWG 76° 65° 49° –
C
EX280T2T FS CNL
28.5 120 A 1 AWG 76° 65° 49° –
C
EX280T2T S CNL
28.5 120 A 1 AWG 76° 65° 49° –
C
EX280T3 CNL
28.5 120 A 1 AWG 76° 65° 49° 38°
* 240V units can be used on 208V single phase with 25% reduced temperature output. Please note per UL standards the rating plate and installation instructions will all
be according to a 240V applied voltage. Check with local officials prior to derating the electrical infrastructure.
“C” indicates evaluation and compliance to either Underwriters Laboratories (UL) or Intertek (ETL) under CAN/CSA-C22.2 No. 64/No. 88. CNL SKUs are Canada specific.
Suffix Definitions
T2T Staged heating elements
T3 Parallel heating elements
EE Meets ANSI Z358.1 emergency
eye/face wash tepid water requirements
FS Factory set ambient to 180°F
ML Multi lavs 0.3 turn on. Staged up to 6
lavs 105°F-110°F temp setting
S Sanitation 180°F
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-16
ELECTRICAL
CONNECTION (4)
20.19
.90
1.87
1.30
9.96
4.32
SERIES 4
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-2
-3
-4
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-8
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OUTLET
INLET
10.68
10.12
SERIES 2
EX190TC
Pg 20
ELECTRICAL
CONNECTION (2)
.94
1.77
1.41
4.00
4.32
UTLET
INLET
15.19
12.14
1 PHASE EX208C
Pg 29
SERIES 3
ELECTRICAL
CONNECTION (3)
.90
1.87
1.30
7.02
4.32
OUTLET
INLET
20.00
16.00
18.50
14.50
4XØ .500
MOUNTING HOLES
1.93
2.89
2.21 7.02
8.78
INLETOUTLET
NEMA 4/4X ENCLOSURE
Pg 24
SERIES 3
“EX” NEMA 4/4X
20.00
16.00
18.50
14.50
4XØ .500
MOUNTING HOLES
1.93
2.89
2.21 7.02
8.78
INLETOUTLET
NEMA
4/4X
“EX”
NEMA 4/4X
12.12
18.19
12.14
.90
1.87
1.30
7.02
3 PHASE Pg 28
SERIES 3
INLET
OUTLET
ELECTRICAL CONNECTION
NEMA 4/4X ENCLOSURE
EX208C Pg 20/22
SERIES 2
16.00
20.00
14.50
18.50
4XØ .500
MOUNTING HOLES
1.97
2.80
4.07 4.00
8.78
INLET
OUTLET
77% REDUCTION
NEMA 4/4X
77% REDUCTION
28
Information and product specifications contained in this document are subject to change without notice.