Eemax EX280T2T, EX280T2T ML, EX280T2T FS, EX280T2T S, EX280T3 User Manual

Series Three

In USA

Assembled

™

Staged or Parallel Models (Three Heating Modules) Thermostatic Control

Applications

•

Residential or commercial multi-xture unit with capacity up to
4 GPM

Performance Features

•

On demand hot water. Cuts energy waste. No stand-by heat
loss.

•

Thermostatic control. Microprocessor provides stable outlet
temperatures

•

Regulates power to required ow

•

Continuous hot water. No storage capacity to run out

•

Reduces installation cost and material. Requires only one cold
water input line, no solder connections. No T&P relief valve
needed (check local codes) or venting

•

Easy installation with integral 3/4" NPT ttings

•

Three glass-ber reinforced heater bodies and Nichrome
elements – a unique, patented ow path ensures optimum heat
transfer and extended element life

•

Warranty, ve (5) years limited on leaks, one (1) year parts

•

Field serviceable replaceable cartridge element

•

Unit mounts on wall

•

High temperature limit switch

Optional Features

•

T2T – Staged heating elements

•

T3 – Parallel heating elements. Recommended for commercial
uses only

•

Factory set ambient to 180° (FS)

•

Multi lavs. Staged up to 4 lavs (60°F-180°F) 110°F temp setting,

0.3 GPM turn on, aerators supplied (ML)

•

Sanitation 180F° (S)

•

N4, N4X (304SS) enclosures

Product Specications

Dimensions: 15.25" x 12.25" x 4.5"

Weight: 15 lb

Cover: Enameled Steel

Color: White

Element: Triple replaceable cartridge inserts.

Thermostatic control (+/-1°F) accuracy at steady

state

Fittings: 3/4" NPT at bottom of unit (5/8 " OD) or

3/4" NPT adapter

Min. Dynamic Operating Pressure: 45 PSI

Max. Dynamic Operating Pressure: 150 PSI

UL listed le number: E86887

U.S. Patent #'s: 4,762,980 and 4,960,976

Suggested Specication

Tankless water heater shall be an Eemax Series Three model
number EX280_________________.

Heater shall have three heating modules. Element shall be
replaceable cartridge insert. Unit shall have a replaceable lter
in the inlet connector. Heater shall be tted with 3/4" NPT water
connections. Maximum operating pressure of 150 PSI. Hot water
storage tanks prohibited. Unit shall be Eemax or approved equal.

NOTE: Refer to rating chart for product information.

Enclosure to be tted with the following features:

_____ FS Factory set ambient to 180°F
_____ ML Multi lavs 0.3 turn on. Staged up to 4 lavs 110°F

_____ S Sanitation 180°F
_____ N4 NEMA 4 steel cabinet with powder coat nish
_____ N4X NEMA 4 stainless steel, corrosion-resistant cabinet

*The wetted surface of this product
contacted by water contains less than

0.25% lead and meets NSF/ANSI 372

temp setting

Specications

Tankless Electric Water Heater

Special Design Service

Inquiries for units for unique applications are welcome.
Call our Technical Service department at 1-800-543-6163.

Information and product specications contained in this document are subject to change without notice. REV 2020-01

25

Series Three

12.14

“EX” NEMA 4/4X

2.21 7.02

Staged or Parallel Models (Three Heating Modules) Thermostatic Control

Specications

Tankless Electric Water Heater

Sux Denitions

T2T Staged heating elements
T3 Parallel heating elements
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

RECOMMENDED

MODEL NUMBER kW AMPS

VOLTS 240*

C

EX280T2T

C

EX280T2T (derated 208V performance)

C

EX280T2T ML

C

EX280T2T FS

C

EX280T2T S

C

EX280T3

C

EX280T3 (derated 208V performance)

C

EX280T3 S

C

EX280T3 FS

CNL Models

C

EX280T2T CNL

C

EX280T2T ML CNL

C

EX280T2T FS CNL

C

EX280T2T S CNL

C

EX280T3 CNL

* 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 ofcials 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 specic.

28.5 119(3X40) 8 AWG 0.7 4.0 78° 65° 49° –

20.9 100(3X33) 8 AWG 0.7 4.0 57° 48° 36° –

28.5 119(3X40) 8 AWG 0.3 4.0 78° 65° 49° –

28.5 119(3X40) 8 AWG 0.7 4.0 78° 65° 49° –

28.5 119(3X40) 8 AWG 0.7 4.0 78° 65° 49° –

28.5 119(3X40) 8 AWG 2.0 5.0 78° 65° 49° 39°

20.9 100(3x33) 8 AWG 2.0 5.0 57° 48° 36° 29°

28.5 119(3X40) 8 AWG 2.0 5.0 78° 65° 49° 39°

28.5 119(3X40) 8 AWG 2.0 5.0 78° 65° 49° 39°

28.5 119 1 AWG 0.7 4.0 78° 65° 49° –

28.5 119 1 AWG 0.3 4.0 78° 65° 49° –

28.5 119 1 AWG 0.7 4.0 78° 65° 49° –

28.5 119 1 AWG 0.7 4.0 78° 65° 49° –

28.5 119 1 AWG 2.0 5.0 78° 65° 49° 39°

15.19

WIRE SIZE

(75° C/CU)

TURN-ON

(GPM)

MAX FLOW

(GPM)

2.5

GPM

TEMPERATURE RISE °F

3.0

GPM

20.00

18.50

4XØ .500
MOUNTING HOLES

4.0

GPM

5.0

GPM

4.32

1.87

20.00

18.50

INLET

OUTLET

.90

1.30

7.02

ELECTRICAL
CONNECTION (3)

8.78

2.89

INLETOUTLET

1.93

26

Information and product specications contained in this document are subject to change without notice. REV 2020-01