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GENERAL SAFETY

The “Eemax three Module, Single Phase” heater is specifically designed to take in cold water
and heat it to temperatures suitable for normal domestic usage up to a maximum of 140 F(60
C). To obtain optimum performance and energy savings, the unit should be located as
near as possible to the point of use. “Thermostatic” models indicated by the letters “T2T or
T3” after the model number, these models and only these, can be fed with pre-heated water
and be used to boost temperature

The unit is supplied with 3/4” NPT pipe connections.  Under no circumstances use a blow
 torch on pipe which is connected to the heater (serious damage to the electronic flow
switch will result). Carefully use Teflon  tape, ensuring no debris enter the heater.  Do not
use pipe dope.

Also, ensure that the pipes are clear of installation debris before fitting the heater.

THIS HEATER MUST HAVE THREE DEDICATED INDEPENDENT

208/240V CIRCUITS, USING CORRECTLY RATED WIRES AND

CIRCUIT BREAKERS.

WARNING

IMPROPER INSTALLATION, ADJUSTMENT, ALTERATION, SERVICE OR MAINTENANCE
CAN CAUSE DEATH, SERIOUS BODILY INJURY OR PROPERTY DAMAGE. REFER TO 
THIS MANUAL FOR ASSISTANCE OR CONSULT THE LOCAL ELECTRIC UTILITY FOR 
FURTHER INFORMATION.

FAILURE TO GROUND THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY.

 WARNING

   

WARNING

WATER HEATERS EQUIPPED FOR ONE VOLTAGE ONLY:  THIS WATER HEATER MAYBE
EQUIPPED FOR ONE VOLTAGE TYPE ONLY: CHECK THE RATING PLATE ON THE FRONT 
COVER OF UNIT FOR THE CORRECT VOLTAGE. DO NOT USE THIS WATER HEATER WITH
ANY OTHER VOLTAGE OTHER THAN THE ONE SHOWN ON THE MODEL RATING PLATE.
FAILURE TO USE THE CORRECT VOLTAGE CAN CAUSE PROBLEMS WHICH CAN RESULT 
IN DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. IF YOU HAVE ANY 
QUESTIONS OR DOUBTS CONSULT EEMAX OR YOUR ELECTRIC COMPANY.

    

WARNING

HAZARD OF ELECTRICAL SHOCK! BEFORE REMOVING THE COVER OR SERVICING THE 
WATER HEATER, MAKE SURE THE ELECTRICAL SUPPLY TO THE WATER HEATER IS 
TURNED “OFF”. FAILURE TO DO THIS COULD RESULT IN DEATH, SERIOUS BODILY INJURY,
OR PROPERTY DAMAGE.

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Summary of Contents for EX280T2T

Page 1: ...PERATE PROPERLY AND IT COULD CAUSE DEATH SERIOUS BODILY INJURY AND OR PROPERTY DAMAGE READ ALSO THE ENCLOSED WARRANTY CARD WARRANTY OF THIS WATER HEATER WILL DEPEND ON PROPER INSTALLATION AND OPERATION THE WARRANTY SHALL BE VOID IF THE DESIGN HAS BEEN ALTERED IN ANY WAY WHATSOEVER THE MANUFACTURER OF THIS HEATER WILL NOT BE LIABLE FOR ANY DAMAGES BECAUSE OF FAILURE TO COMPLY WITH THE INSTALLATION ...

Page 2: ...208 240V CIRCUITS USING CORRECTLY RATED WIRES AND CIRCUIT BREAKERS WARNING IMPROPER INSTALLATION ADJUSTMENT ALTERATION SERVICE OR MAINTENANCE CAN CAUSE DEATH SERIOUS BODILY INJURY OR PROPERTY DAMAGE REFER TO THIS MANUAL FOR ASSISTANCE OR CONSULT THE LOCAL ELECTRIC UTILITY FOR FURTHER INFORMATION FAILURE TO GROUND THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY WARNING WARNING WATER HEATERS EQUIPP...

Page 3: ... of the backplate Unit weight is approximately 15 lbs Use an appropriate fastener for this weight For the unit to be mounted against hollow walls suggest using steel wall anchors with the correct grip range and 6 32 screw size minimum NOTE The heater should be installed below the level of all hot water outlets serviced by this heater NOTE PRESSURE AND TEMPERATURE RELIEF VALVE These units are not r...

Page 4: ...MINIMUM 8 CLEARANCE ABOVE UNIT 4 Figure 1A MOUNTING HOLES To 3 Independent circuit breakers serial LUG TERMINALS AT RELAYS ELECTRICAL HOOK UP 208 240 V L1 L2 C B 2 L1 L2 C B 3 L1 L2 C B 1 GROUND LUGS ...

Page 5: ... tape only No pipe dope NPT Elbow s Union Threaded type Teflon tape only No pipe dope NOTE When soldering pipe joints remove heater from the wall Serious damage can occur if any soldering is done while pipes are connected to the heater Take care to ensure that the pipes are correctly aligned with the inlet and outlet bosses in order to avoid excessive stress on the heater body molding Pipe support...

Page 6: ...cting the heater Failure to do so could cause damage to the flow switch 3 Install isolating valves full flow ball valve type on both inlet and outlet pipes This allows unit to be isolated for maintenance purposes Fig 1B 4 When all plumbing is complete fully check the system for water leaks at all the plumbing connections If a leak is present take corrective action Fully open both inlet and outlet ...

Page 7: ... holes provided in the flange on the backplate The live wires should be connected to the slots in the terminal block marked L1 and L2 The ground lead must be connected to the slot marked GND GROUND MUST BE BROUGHT TO THE GROUND AT THE CIRCUIT BREAKER PANEL DANGER FAILURE TO GROUND THE SYSTEM MAY RESULT IN DEATH OR SERIOUS INJURY Units rated of 240 V can operate at 208 V with reduced output The out...

Page 8: ...te to ensure all 4 modules to activate GO TO APPROPRIATE SECTION FOR YOUR MODEL NOTE For the following sections the first unit is the right hand heating module and the second unit is the right center far left hand is the forth heating module IV COMMISSIONING YOUR HEATER T2T MODELS a Switch on the power to the first unit The power indicator light should illuminate b Switch on the power to the secon...

Page 9: ...er When it is pulsing the unit is modulating the power to achieve the temperature set by means of the temperature adjustment screw ALL HEATERS In order to obtain good control at single lever mixer type faucets single spout the cold water supply to the faucet should be restricted to give approximately the same flow rate of cold water to the faucet as the hot water coming from your Eemax heater The ...

Page 10: ...ement 5 ECO TRIPPED High Limit Thermostat TURN OFF THE THREE MAIN CIRCUIT BREAKERS Reset by pushing in red button on each heater module SYMPTOM B NO HEAT OR LOW TEMPERATURE WITH INDICATOR LIGHT ON 1 WATER FLOW TOO HIGH Reduce the water flow by using an outlet ball valve See page 9 for temperature rise at various flow rates 2 INCORRECT POWER SUPPLY Make sure that the unit is connected to the voltag...

Page 11: ...HEATER CORE ASSEMBLY EEMAX REPLACEMENT PARTS DIAGRAM CONTROL BOARDS 7 Wire EX 100G EEMAX INC 353 Christian Street Oxford CT 06478 Tel 203 267 7890 11 To 3 Independent circuit breakers serial 8 Wire EX 284 ECO High Limit Thermostat Push to Reset ...

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