EemaX EX190 TC Manual de usuario

ELECTRIC INSTANTANEOUS WATER HEATER

INSTALLATION GUIDE AND OWNERS MANUAL

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

INSTALLATION OR PERFORMANCE OF THIS HEATER, PLEASE CALL OUR

TECHNICAL SERVICE DEPARTMENT TOLLFREE : 1-800-543-6163.

HAVE THE INFORMATION LISTED BELOW BEFORE CALLING :

SERIAL NO. MODEL NO. EX INSTALLATION DATE

EEMAX “SERIES-TWO” WATER HEATERS

MODELS COVERED:- EX190 TC, T2 - 240/208 V

EX144 TC, T2 - 240/208 V

EX1608 TC, T2 – 208V

EX160 TC, T2 - 277 V

EX200 TC, T2 - 277 V

READ THE GENERAL SAFETY SECTION BEGINNING ON THE INSIDE COVER

AND THEN THIS ENTIRE MANUAL BEFORE INSTALLING OR OPERATING THIS

WATER HEATER. IF YOU DON’T FOLLOW THE SAFETY RULES, THE UNIT WILL

NOT OPERATE PROPERLY AND IT COULD CAUSE DEATH, SERIOUS BODILY

INJURY AND/OR PROPERTY DAMAGE. READ ALSO THE ENCLOSED

WARRANTYCARD. 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 AND

OPERATING INSTRUCTIONS OUTLINED ON THE FOLLOWING PAGES.

THE INSTALLATION MUST CONFORM WITH THE INSTRUCTIONS IN THIS

MANUAL; ELECTRIC COMPANY RULES; AND THE LOCAL CODES, OR IN

THE ABSENCE OF LOCAL CODES, WITH THE LATEST EDITION OF THE

NATIONAL ELECTRICAL CODE. THIS PUBLICATION IS AVAILABLE FROM

YOUR LOCAL GOVERNMENT OR PUBLIC LIBRARY OR ELECTRIC COMPANY

OR BY WRITING UNDERWRITERS LABORATORIES, 333 PFINGSTEN ROAD

NORTHBROOK, IL, 60062.

WARNING

1seriestwo092608.ppt

GENERALSAFETY

The “Eemax Series Two” heater is specificallydesigned 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

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

possibleto the point of use.

The unit is suppliedwith 3/4” NPT pipe connections. Under no circumstances use a blow

torch on pipe which is connected to the heater (serious damage to the electronicflow

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 installationdebris before fitting the heater.

THIS HEATER MUST HAVE TWO DEDICATED INDEPENDENT

CIRCUITS, USING CORRECTLY RATED WIRESAND 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

WATER HEATERS EQUIPPED FOR ONE VOLTAGE ONLY: THIS WATER HEATER IS

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.2

Inlet isolating valve-

ball valve. (Always leave fully

open when unit is in service.)

MINIMUM - 8” CLEARANCE ABOVE UNIT

L N L

RELAY LUGS

ELECTRICAL

HOOK-UP

240/208 V

Outlet isolating valve-

ball valve (leave open

just enough to obtain

adequate flow of hot water) Figure 1

4”

MOUNTING

HOLES

Two independentcircuit breakers

L 1 L2 L1 L2

RELAY LUGS

ELECTRICAL

HOOK-UP

277 V

ground

10 ½’’

10’’

I. MOUNTING THE UNIT

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

beneath the sink is ideal.

Do not install the heater above a faucet or “point of use” because the siphoning effectmay

drain the heater which can cause premature element burn out.

2) This unit must only be mounted in a 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 and cause permanent damage to the water heater.

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 element.

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

of the backplate.

NOTE: The heater should be installedbelow the level of all hot water outlets serviced by this

heater.

NOTE: PRESSURE AND TEMPERATURE RELIEF VALVE

These units are not required by UL to have a Pressure and Temperature Relief

Valve (PTRV). You should check with local codes to find out if one is required in your

area.

If local codes require the use of a temperature and pressure relief valve it should be

installedon the outlet hot water pipe before the outlet ball valve.

Cold

Installation directly beneath the

sink is ideal

EemaX

Figure 2 Hot

TO SHOWER

HOT OUTLET COLD INLET

II. PLUMBING HOOK-UP

1) The unit is supplied with ¾’’ NPT fittings (Figure 3), USE THESE. DO NOT USE

PIPE DOPE AND DO NOT SOLDER 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 solderingpipe 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 isolatingvalves (full flow ball valve type) on both inlet and outlet pipes. This allows unit

to be isolated for maintenance purposes. (Fig. 1)

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. If the leak is at a compression fitting, slowly

tighten the compression nut until it stops. Fully open both inlet and outlet BALL VALVES.

Run all the 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.

HOT OUTLET

¾’’ NPT

FITTING

DO NOT SOLDER

COLD INLET

¾’’ NPT

FITTING

DO NOT SOLDER

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.

4”

Figure 3

III. ELECTRICALHOOK-UP

WARNING

BEFORE BEGINNING ANY WORK ON THE ELECTRICAL INSTALLATION,

BE SURE THE SWITCHAT MAIN BREAKER PANEL IS “OFF” TO AVOID

ANY DANGER OF ELECTRICAL SHOCK.

“Series-two” heaters are manufactured to the following specifications:

This unit must have its own independentcircuits, using 2 SETS of UL listed 2 conductor and

ground core copper wire cable of the appropriate size protected by 2 separate and independent

correctly rated Double Pole breakers. (208, 220, 240 V, see Figures 4 and 5). For 277 Volt models

use correctly rated single pole breakers.

Wireentry into the unit must be made through the hole providedin 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. (277 models have neutral “N” slots.)

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 for 240 V can operate at 220 V or 208V with reduced output.

The output will vary in accordance with the following ratios:

208 volts 220 volts 240 volts

.75 .84 1.0output ratio

volts

MODEL TYPE OUTPUT / kW VOLTAGE / V AMPERAGE

EX190 19 240 2 x 39 Amps

EX144 15 240 2 x 32 Amps

EX200 20 277 2 x 36 Amps

EX160 16 277 2 x 29 Amps

EX1608 16.6 208 2 x 39 Amps

ONON

OFFOFF

ONON

OFFOFF

2 Separate and independent

correctly rated Double pole

breakers (240/208 Volts)

Figure 4

Figure 5

Circuit Breaker Panel

IMPORTANT

BEFORE SWITCHING “ON” THE POWERAT THE MAIN CIRCUIT BREAKER PANEL

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

PREMATURE FAILURE OF THE ELEMENT WILLOCCUR. TO DO THIS OPEN ALL HOT

WATER OUTLETS ONE ATA TIME FOR A MINUTE OR TWO UNTILTHE WATER FLOW

IS CONTINUOUS AND FREE FROM “GULPING” AND FREE FROM VISIBLE AIR POCKETS.

1) Open fully both inlet and outlet valves at the heater.

2) Open any hot water outlet in the system. If the outlet is a “single lever” mixer type turn to the

hottest position. Run for one minute to clear all the air from the system.

3) Slowly close OUTLET ball valve until the water flow from the faucet just starts to reduce.

NOTE: This process has two effects. One, any air in the system will be purged out. Two, the

heater units will be pressurizedat the supply pressure. This will prevent the elements burning

when energized.(Note:Keep water flowing whilst carrying out the procedures outlinedbelow.)

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 left hand heating module.

IV. COMMISSIONING YOUR HEATER

“T” MODELS

a) Switch on the power to the first unit. The power indicator light should illuminate.

b) Switch on the power to the second unit, again the power indicator light should illuminate.

Note: This light should pulse On and Off at first and after about 20- 30 seconds it should

stay fully on.

c) Use the OUTLET ball valve to graduallyreduce the water flow until the power indicator light

on the second unit begins to pulsate.The water temperature should now be approximately

140° F.

d) The thermostat is now set and the water temperature will always be the same when the

indicator light is pulsing.

e) Increasing water flow (above the flow rate at which the thermostatic control is no longer

effective) will reduce the water temperature.

“T2” MODELS

a) Switch on the power to the first unit, the power indicator light should illuminate.

Note: This light should pulse On and Off at first and after about 20- 30 seconds it should

stay fully on.

b) Switch on the power to the second unit, again the power indicator light should illuminate.

Note: This light should pulse On and Off at first and after about 20- 30 seconds it should

stay fully on.

c) Use the OUTLET ball valve to graduallyreduce the water flow until the power indicator lights

on both units begin to pulsate. The water temperature should now be approximately

140° F.

For “T” and “T2”, TC Models

If a lower temperature is required, turn the temperature adjustment screw(s) counter-clockwise

about 1/8 of a turn (See Figure 1). Wait15-20 seconds and check the temperature at the fixture.

Repeat this process until the desired temperature has been achieved. (For T2 & TC models try to

adjust both temperature adjustment screws by about the same amount so that the lights pulse at the

same rate.) If you have reduced the temperature considerably from the 140° F setting, you could now

open up the outlet ball valve slightly to achieve a higher rate of flow.

Whenthe indicator light is on continuously,the unit is emitting full power. Whenit 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 simplest method of doing

this is by partiallyclosing the cold water valve under the sink.

MAXIMUM TEMPERATURE RISE CHART ( 0F )

FLOW RATE ( GAL. PERMIN. )

OUTPUT 0.75 1 1.25 1.5 2 2.5 3

15 kW N/A 102 82 68 51 40 34

16 kW N/A 109 87 73 55 44 36

19 kW N/A 130 104 87 65 52 43

20 kW N/A 136 109 91 68 54 45

TROUBLESHOOTING

SYMPTOM “A”: 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.

T, TC Models – 0.75gpm

T2 Models – 1.5gpm

Also check that the inlet filter screen is clear from any

debris.This is located in the brass inlet boss.

3) WATER CONNECTIONS ARE REVERSED

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

4) ELEMENT BURNED OUT

TURN OFF THE MAIN CIRCUIT BREAKER!

Using an ohmmeter test the resistance of the heating element

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

The resistance reading should be under 10 ohms. If the resistance

is much greater than this value, call Eemax for a replacement element.

5) ECO TRIPPED (High Limit Thermostat)

TURN OFF THE MAIN CIRCUIT BREAKER!

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 8 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

front cover of the unit and no other.

3) ELEMENT BURNED OUT

TURN OFF THE MAIN CIRCUIT BREAKER!

Repeat the steps from paragraph 4 above.

4)THERMOSTAT ADJUSTMENT SCREW NOT TURNED UP (Models “T”, “TC” and “T2” only.)

Turn both thermostat adjustment screws clockwise in small increments until the indicatorlight(s)

remains on. Take care not to force the screw past it’s stop position.

5) ECO TRIPPED (High Limit Thermostat)

See Paragraph 5 above. 9

If you have any problems or questions please contact EemaX @ 800-543-6163

L1 L2L1 L2

To 2nd

module

ECO –

push to

reset

P/N

EX278

RELAY –

P/N EX255B – 208-240V

P/N EX253B – 277V

REPLACEMENT HEATER CORE ASSEMBLY

EX144 (T2, TC) – P/N EX770 – 7.5kW @ 240V

EX190 (T2, TC) – P/N EX630 – 9.5kW @ 240V

EX1608 (T2, TC) – P/N EX520 – 8.3kW @ 208V

EX160 (T2, TC) – P/N EX960 – 8kW @ 277V

EX200 (T2, TC) – P/N EX760 – 10kW @ 277V

CONTROL

BOARD

HEATER

CORE

7 - Wire

EX 100G 8 - Wire

EX 284

EEMAX REPLACEMENT PARTS DIAGRAM

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