EemaX EX240T3 Manuel utilisateur

EemaX

THREE PHASE THERMOSTATIC

ELECTRIC INSTANTANEOUS WATER HEATER

MODELS: EX240T3, EX240T2T, EX180 T3, EX180T2T

(208 volts only)

INSTALLATION GUIDE AND OWNERS MANUAL

WARNING

BEFORE ATTEMPTING INSTALLATION OF THIS UNIT OR MAKING ANY ADJUSTMENTS

TO THE UNIT ALWAYS BE SURE MAIN CIRCUIT BREAKER IS OFF TO PREVENT DANGER

OF SERIOUS ELECTRIC SHOCK.

INSTALLER/ CONSUMER RESPONSIBILITIES

PLEASE TAKE THE TIME TO READ NOT ONLY THIS MANUAL BUT ALSO THE

WARRANTY CARD ENCLOSED. WARRANTY OF THIS HEATER WILL DEPEND ON PROPER

INSTALLATIONAND OPERATION. THE WARRANTY SHALL BE VOID IF THE DESIGN OR

STRUCTURE OF THE WATER HEATER HAS BEEN ALTERED IN ANY WAY WHATSOEVER. THE

MANUFACTURER OF THIS WATER HEATER WILL NOT BE LIABLE FOR ANY DAMAGES

BECAUSE OF FAILURE TO COMPLY WITH THE INSTALLATIONAND OPERATING

INSTRUCTIONS OUTLINED ON THE FOLLOWING PAGES.

IF YOU REQUIRE ANY HELP OR HAVE ANY QUESTIONS RELATING TO THE

INSTALLATION OR PERFORMANCE OF THIS HEATER, PLEASE CALL OUR TECHNICAL

SERVICE DEPARTMENT TOLL-FREE: 1-800-543-6163

HAVE THE INFORMATION LISTED BELOW BEFORE BEFORE CALLING.

MODEL :

SERIAL NO :

INSTALLATION DATE :

ELEMENT RESISTANCE: OHMS

SWITCH ON FLOW RATE: GPM

OPERATING TEMPERATURE

MIN: MAX:

Eemax Inc., 353 Christian St Oxford, CT 06478

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GENERAL

The Eemax “Three Phase Thermostatic” water heater is specifically designed to take in

cold or pre-heated water and heat it to temperatures suitable for commercial washing,

sluicing or processing up to a maximum temperature of 180 F (82 deg. C). To obtain

optimum performance and energy savings, the unit should be located as near as possible

to the point of use. The unit must only be installed in a vertical position with the inlet

and outlet at the bottom. The power is activated by individual electronic flow switches located

in each of the three heating modules. These will be damaged by excessive heat, do not solder

any pipes that are in contact with the heater.

Also ensure pipes are clear of installation debris before fitting the heater, otherwise the flow

switches could jam in the “on” position. The unit must be connected to its own individual electric

circuit protected by a suitably rated three pole breaker. The maximum voltage which can be

applied across any heating module is 208 volts.

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.

The unit is supplied with compression rings and nuts suitable for direct coupling to standard

1/2 “ ( 5/8 “ outside diameter ) copper or plastic piping. There is no need for additional screwed

fittings and under no circumstances use a blow torch on pipe which is connected to the heater

(serious damage to the electronic flow switch will result). Do not use pipe dope or Teflon tape.

WARNING

Failure to ground the system may result in death or serious injury.

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MOUNTING THE UNIT

1) The unit should be mounted as close to the point of use as possible.

2) This unit must only be mounted in the vertical position with the water fittings located at the

bottom of the unit. Mounting other than in the vertical position WILL cause element burn out.

3) The cold water inlet is on the right hand side and the hot water outlet is on the left hand side.

Under NO circumstances can these be reversed.

4) Leave a minimum of 8” above the unit for easy replacement of the elements.

5) The heater should be fixed to the wall using screws in the four mounting holes at each corner

of the backplate.

6) The unit should be installed in the plumbing system in such a way that there is no tendency

for the unit to be starved of water: for example: by an excessive draw-off of cold water just

before the unit. Also do not fit an unrestricted hot water draw-off point below the heater as

this will tend to empty the heater by siphoning.

NOTE

ALL MOUNTING AND PLUMBING MUST BE COMPLETE BEFORE YOU PROCEED

WITH ELECTRICAL HOOK-UP.

TEST THE INSTALLATION FOR LEAKS BEFORE CONNECTING THE

ELECTRICAL SUPPLY.

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1) The unit is supplied with compression fittings, USE THESE; DO NOT USE TAPERED

THREADED PIPE FITTINGS AND DO NOT SOLDER PIPE TO THE INLET OR OUTLET.

2) 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.

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.

Run water through the supply pipe to remove all debris from the pipe before connecting 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. (see Fig. 1)

4) When all plumbing is complete, fully check the system for water leaks at all plumbing

connections. If leak is present take corrective action. If leak is at compression fitting slowly

tighten compression nut until it stops. Fully open both inlet and outlet ball valves.

Run all hot water outlets fed by this heater one at a time for a minute or two until the water

flow is continuous, free from ”gulping” and from all visible air pockets.

PLUMBING HOOK-

NOTE

ALL MOUNTING AND PLUMBING MUST BE COMPLETE BEFORE YOU PROCEED

WITH ELECTRICAL HOOK-UP.

TEST THE INSTALLATION FOR LEAKS BEFORE CONNECTING THE

ELECTRICAL SUPPLY.

7 “

Hot outlet

compression

fitting

DO NOT

SOLDER

Cold inlet

compression

fitting

DO NOT

SOLDER

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ELECTRICAL HOOK-UP

WARNING

HAZARD OF ELECTRICAL SHOCK! BEFORE BEGINNING ANY WORK ON THE

INSTALLATION, MAKE SURE THE ELECTRICAL SUPPLY TO THE HEATER IS TURNED

“OFF”. FAILURE TO DO THIS COULD RESULT IN DEATH, SERIOUS BODILY INJURY,

OR PROPERTY DAMAGE.

WARNING

WATER HEATERS EQUIPPED FOR ONE VOLTAGE ONLY: CHECK THE RATING PLATE

ON THE FRONT OF THE UNIT. DO NOT USE THIS WATER HEATER WITHANY VOLTAGE

OTHER THAN THE ONE SHOWN ON THE MODEL RATING PLATE. FAILURE TO DO SO

CAN RESULT IN DEATH, SERIOUS BODILY INJURY, OR PROPERTY DAMAGE. IF YOU

HAVE ANY QUESTIONS OR DOUBTS CONSULT YOUR ELECTRIC COMPANY.

This heater must have its own independent circuit using four wires; three live and one ground,

of the appropriate rating protected by the correctly rated three pole breaker

DANGER

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

IMPORTANT

BEFORE SWITCHING “ON” THE POWER AT THE MAIN CIRCUIT BREAKER PANEL MAKE

SURE THAT THE HOT WATER CIRCUIT IS FREE OF AIR POCKETS OR PREMATURE

FAILURE OF THE ELEMENT WILL OCCUR. TO DO THIS OPEN ALL HOT WATER OUTLETS

ONE AT A TIME FOR A MINUTE OR TWO UNTIL THE WATER FLOW IS CONTINUOUS AND

FREE FROM “GULPING” AND FROM VISIBLE AIR POCKETS.

RATINGS OF “EX” THREE PHASE MODELS

MODEL MAX. OUTPUT CURRENT TEMPERATURE RISE (F)

@ 208V PER PHASE 1.5gpm 2.0gpm 2.5gpm 3.0gpm 3.5gpm 4.0gpm

EX 240 24 KW 67 109 82 65 54 47 41

EX 180 18 KW 50 82 61 49 41 35 31

THIS UNIT MUST NOT BE CONNECTED IN STAR CONFIGURATION

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COMMISSIONING YOUR HEATER

IMPORTANT

Before switching “on” the power at the main circuit breaker panel make sure that the hot

water circuit is free of air pockets or premature failure of the heating element will occur.

To do this open all hot water faucets one at a time for a minute or two until the water flow

is continuous and free from “gulping” and from visible air pockets.

1) With inlet and outlet BALL VALVES fully open, turn on a hot water outlet.

2) Run for 1 minute.

3) Switch on electric supply at circuit breaker panel.

4) The power indicator light should now come on (see Fig. 1), pulsing at first. Allow 40

seconds for the lights to stay full on, the heater is now operating at full power.

NOTE: At this point water temperature may not be hot.

5) Using the OUTLET BALL VALVE slowly reduce water flow until desired temperature is

achieved at hot water outlet.

NOTE: The water temperature is regulated by the flow through the heater. The lower the

flow the higher the temperature and vice versa.

MINIMUM SETTING MAXIMUM SETTING

THE TEMPERATURE CONTROLLING

POTENTIOMETER IS A PRECISION

COMPONENT. ADJUST GENTLY AND

DO NOT TURN BEYOND THE MIN.

AND MAX. STOP POINTS

6) Now turn the temperature adjustment screw on the first module counter clockwise about

1/8 of a turn, wait for 10-15 seconds and see if the indicator light begins to pulse. If it does

not, turn another 1/8 of a turn, wait and again see if the lamp begins to pulse. Repeat until

the light is pulsing regularly which indicates that the temperature has stabilized at the set

temperature. Repeat with modules two and three. Check that the outlet temperature is at

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the desired temperature and that all three elements are pulsing equally. The thermostats

are now set and the water temperature will always be the same when the lights are pulsing.

7) Check performance of flow switch by opening and closing the faucet of the outlet valve a

few times.

THE POWER INDICATOR LIGHT SHOULD ONLY BE ON WHEN WATER IS FLOWING

THROUGH THE UNIT. For expected temperature rise at various rates of flow see chart

8) It is possible that drawing off cold water at comparatively high rates of flow elsewhere in

the building at the same time that the heater is working, could cause premature element

failure. Care should be taken not to starve the unit of cold water. To prevent this from

happening, open fully the main valve on the cold supply to the building and throttle back

the control valves to the other cold water outlets.

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TROUBLESHOOTING

SYMPTOM: NO HEAT INDICATOR LIGHT OFF

1)ELECTRIC SUPPLY IS OFF

Turn on the main circuit breaker.

2)NO OR LOW WATER FLOW

Ensure that the minimum flow rate to switch on your heater is met,

for this figure refer to the front cover of this manual.

Also check that the inlet filter screen is clear from any debris.

3)WATER CONNECTIONS ARE REVERSED

Cold water inlet = right side, hot water outlet = left side.

4)ELEMENT BURNED OUT

TURN OFF THE MAIN BREAKER!

Using an ohmmeter test the resistance of the heating element

across the two threaded termination rods on top of the element.

See the front cover of this manual for the correct value.

If the resistance is much greater than the correct value, call

your supplier for a replacement element.

SYMPTOM: 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 5

for temperature rise at various flow rates.

2)INCORRECT POWER SUPPLY

Make sure that the unit is connected to the voltage supply specified

on the rating label on the the front cover of the unit and no other.

3)ELEMENT BURNED OUT

TURN OFF THE MAIN BREAKER!

Repeat the steps from paragraph 4 above.

4)THERMOSTATADJUSTMENT SCREW NOT TURNED UP

Turn the thermostat adjustment screw clockwise in small

increments until the indicator light remains on. Take care not to

force the screw past it’s stop position.

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L1 L2 L3

For supply connections use 6 AWG or

larger wires suitable for at least 75 c (167F)

THIS APPLIANCE MUST BE GROUNDED

This heater is only suitable for 3 wire

3 phase connection with a maximum of

208 volts across each element.

REPLACEMENT PARTS DIAGRAM

THERMOSTATIC

PCB

PART# EX100D

HEATER CORE ASSEMBLY (PLEASE SPECIFY 208 VOLTS ON ANY ORDERS)

FOR EX180 T3 PART# EX770

FOR EX240 T3 PART# EX560

TRIAC

PART# EX18

TO MODULE 2

TO MODULE 1

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