Easy-Kleen EZN195 User manual

Natural Gas (EZN) and Propane (EZP) Fired
Water Heaters
OPERATING MANUAL
FOR QUICK REFERENCE, RECORD YOUR MACHINE DATEHERE:
Model _ Serial # Volts
Phase HP Date Shipped

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NG & LPG Heaters • Rev. 4/13/2016
Easy-Kleen Pressure Systems
1-800-315-5533
This manual contains operational information that is specific for
The EZN and EZP, Natural Gas and Propane fired hot water heaters.
Read the following instructions carefully before attempting to assemble,
install, operate or service this pressure washer. Failure to comply withthese
instructions could result in personal injury and/or property damage.
Table of Contents
IMPORTANT SAFETY INFORMATION............................................................................................................. 3
SPECIFICATIONS ............................................................................................................................................ 7
INTRODUCTION............................................................................................................................................. 8
OPERATING CHARACTERISTICS ..................................................................................................................... 8
GAS SUPPLY................................................................................................................................................... 9
VENTING REQUIREMENTS........................................................................................................................... 10
OPERATING INSTRUCTIONS ........................................................................................................................ 12
GENERAL MAINTENANCE AND CARE .......................................................................................................... 12
COMPONENT IDENTIFICATION ................................................................................................................... 14
TROUBLE SHOOTING GUIDE - BURNER SYSTEM ......................................................................................... 16
CIRCUIT DIAGRAMS..................................................................................................................................... 18
MANUFACTURER’S WARRANTY.................................................................................................................. 21

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IMPORTANT SAFETY INFORMATION
The safe operation of our pressure washing systems is the FIRST priority of Easy-Kleen. This
will only be achieved by following the operation and maintenance instructions as explained in
this manual and all other enclosed manuals.
This manual contains essential information regarding the safety hazards, operations, and
maintenance associated with this machine. The manual should always remain with the machine,
including if it is resold.
ALL CAUTIONS AND SAFETY WARNINGS MUST BE FOLLOWED TO AVOID
INJURY OR DAMAGE TO EQUIPMENT.
THIS EQUIPMENT IS TO BE USED ONLY BY TRAINED OPERATORS AND MUST
ALWAYS BE ATTENDED DURING OPERATION.
1. Read the instructions in this manual carefully before attempting toassemble,
install, operate or service this pressure washer. Failure to comply with the
instructions could result in personal injury and/or property damage.
2. Be thoroughly familiar with all controls and know how to stop the machine in
the event of an emergency.
WARNING: Flammable liquids
can create fumes which can
ignite, causing property
damage or severe injury.
WARNING: Risk of
explosion. Operate only
where open flame
or torch is permitted.
WARNING: This
machine exceeds
85db. Appropriate
ear protection must
be worn.
WARNING: Use protective
eyewear and clothing when
operating equipment in
order to avoid personal
injuries.
WARNING: To reduce the risk of injury,
read operating instructions carefully
before using.

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NG & LPG Heaters • Rev. 4/13/2016
.
3. If you smell gas, shut off the gas supply to the appliance, extinguish any open
flame, and test all joints with a soap solution. If the odor persists, call your gas
supplier immediately.
WARNING: Hot discharge
fluid. Do not touch or
direct discharge stream
at persons.
WARNING: Risk of
injury. Hot surfaces
can cause burns.
WARNING: Risk of injection or
severe injury to persons. Keep
clear of nozzle spray.
6. High pressure spray can cause serious injuries. Never point pressurized
spray at any person or animal. Handle the spray assembly withcare.
WARNING: Keep water spray
away from electrical wiring.
4. All electrically powered equipment must be grounded at all times toprevent
fatal electric shocks. Do not spray water on or near electrical components. Do
not touch electrical components while standing in water or when hands are
wet. Always make sure machine is disconnected from power source before
servicing.
WARNING: Dangerous Gases
WARNING: Risk of asphyxiation.
Use this product only in a well-
ventilated area.
5. Use equipment in a well-ventilated area to avoid carbon monoxidepoisoning
or death. This machine must never be connected to a Type B gas vent.
DANGEROUS
GASES

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7. Hold firmly to the gun and wand during start up and operation of the
machine. Do not attempt to make adjustments while the trigger gun isin
operation.
8. Make sure all quick coupler fittings are properly secured before operating
pressure washer.
9. Do not overreach or stand on anything unstable. Keep a good balance and
make sure to keep a steady footing at alltimes.
10`. It is important to keep your machine from freezing in order to keep it in
its best working condition. Failure to protect your machine from freezingmay
cause damage to the machine and personal injuries may occur as aresult.
11. For machines with an electric motor or 120v burner –THE MACHINE
MUST BE ELECTRICALLY GROUNDED. Must be connected to a GFCI
(Ground Fault Circuit Interrupter). All Service Must be done with the
machine disconnected from the supply circuit.
12. Protect high pressure hoses from sharp objects and vehicles. Inspect
condition of hoses prior to use, or serious injury could occur.
13. Do not pass acids or other caustic or abrasive fluids through thepump.
WARNING: High Voltage
WARNING: Protect from freezing.
WARNING: Risk of injury
from falls when using ladder.
WARNING: Trigger gun kicks
back. Hold with both hands.
HIGH VOLTAGE

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14. Do not attempt to operate this machine if fatigued or under the influence ofalcohol,
prescription medications, or drugs.
15. Some of the maintenance procedures involved in this machine require a certified
technician (these steps are indicated throughout this manual). Do not attempt toperform
these repairs if you are not qualified.
If you need further explanation of any of the information in this manual, suspend any
activity involving the equipment and call our toll free number for assistance, 1-800-315-
5533.

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SPECIFICATIONS
MODEL #
MACHINE
BTU/HR
BURNER
RING # JETS
GAS
PRESSURE
W.C. (in.)
TYPE
OF GAS
AIR RESTRICTION
VENT OPENING
@ SEA LEVEL
FLUE OUTLET
DIAMETER
EZN195
195K
32
3.5
NG
NONE
8 in
EZP195
195K
32
11
LPG
NONE
8 in
EZN295
295K
32
3.5
NG
NONE
8 in
EZN295
295k
32
5
NG
NONE
8 in
EZP295
295K
32
11
LPG
1 + 1
8 in
EZN390
390K
44
3.1
NG
1 + 1/2
8 in
EZP390
390K
44
8
LPG
1+1
8 in
EZN510
510K
66
3.5
NG
NONE
10 in
EZP510
510K
66
11
LPG
10 in
EZN560
560K
33
3.7
NG
1+0
10 in
+33
10 in
EZP560
560K
44
11.5
LPG
1+0
10 in
+22
10 in
EZN720
720K
66
3.7
NG
1+1
10 in
EZP720
720K
66
11.3
LPG
1+1
10 in
EZN940
940k
88
3.5
NG
NONE
12 in
EZP940
940k
88
11.5
LPG
NONE
12 in

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EASY-KLEEN MODULAR WATER HEATERS
INTRODUCTION
Thank you for selecting a quality EASY-KLEEN product. We are pleased to have you included
among the many satisfied owners of an EASY-KLEEN SYSTEM.
Years of engineering have gone into the development of these fine products and only top quality
components and materials are used throughout. Each machine is carefully tested and inspected
before leaving our plant to ensure years of dependable service.
The rest is up to you. To continue to receive satisfactory performance, remember that this
machine represents a substantial investment on your part, but properly cared for and maintained
it will return this investment many times. As with all mechanical equipment, your machine
requires proper installation, proper operation, and maintenance as outlined in this manual.
PLEASE READ THIS MANUAL CAREFULLY BEFORE INSTALLING AND OPERATING
MACHINE. EXAMINE THE MACHINE AND CRATE CAREFULLY FOR SHIPPING
DAMAGE OR MISSING PARTS. REPORT PROMPTLY ANY SHORTAGES OR DAMAGE
CLAIMS TO FREIGHT CARRIER.
Carefully review any additional manuals that have been included with your system and follow
ALL ADDITIONAL OPERATING INSTRUCTIONS. They are specific for the quality
components that have been used to manufacture your machine and are an integral part of the
operating and maintenance procedures.
SCOPE
These instantaneous Coil-type Industrial Water Heaters are designed primarily for use in
conjunction with existing cold water washing systems, either as a field upgrade to a hot water
washer or as integral component of a modular Hot Water system. NOTE: These water heaters
are restricted to industrial use only and are not to be used as portable water heaters.
OPERATING CHARACTERISTICS
MAXIMUM WORKING PRESSURE
The water heater coils are designed to operate safely at specific working pressures (see
SPECIFICATIONS for the water pressure of your model). Each water heater is equipped with a
safety pressure relief valve (unloader) which prevents operation above this pressure. If the high
pressure system requires a lower relieving pressure for pump and motor protection, then the
unloader/bypass valve on the pumping unit should be adjusted to desired pressure rating.

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HIGH LIMIT TEMPERATURE CONTROL
The water heater is equipped with a “high limit control” thermostat present at 220 F. It shuts
down the burner in the event of excessive outlet temperature caused by insufficient water flow
through the heater coil. This control can be adjusted to desired temperature up to but not
exceeding 220 F.
PRESSURE SWITCH
A pressure switch is installed on the high pressure pump to prevent burner operation in the
absence of water flow. When heater is used with shutoff gun pumping systems, the pressure
switch controls the burner in conjunction with operation of the trigger gun.
FLOW SWITCH
A flow switch is installed on the outlet of the high pressure pump and will shut off the pump and
motor in the absence of water flow as well as turning it back on when flow is detected (by
squeezing the wand trigger).
SAFETY RELIEF VALVE
WARNING: The safety relief valve on this unit has been factory set and is not to be
adjusted. Tampering with relief valve may cause personal injury or equipment damageand
will void the manufacturerwarranty.
INSTALLATION INSTRUCTIONS
These water heaters are certified for installation on combustible flooring with clearance to
combustible walls as follows: 6 inches at rear, 18 inches at end, and 24 inches at front.
Installations must be performed in accordance with CAN1 B149.1 and 2 Codes and UL 1766
requirements in Canada and/or prevailing state and local codes in the USA.
GAS SUPPLY
Have a qualified technician install the gas supply line to the machine.
NATURAL GAS
Run a minimum 1 inch IPS gas supply line to the heater reducing to 3/4 IPS at inlet of
combination gas valve. Install a gas shutoff cock in supply line to provide for shutting off the gas
for routine line maintenance or repairs. The gas supply pipe shall be a direct line from the gas
burning equipment in the building.

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PROPANE
For stationary installations, run a minimum 3/4 IPS supply line as above. For portable
applications, a hose and regulator assembly is included with the optional portability kit. This
includes a P01 tank connector, single stage regulator and an approved supply hose for connection
to a combination gas valve.
Obtain one or more 100 lb. propane tank (s) and locate near the heater. Insert the male P01
connector on the regulator into the female receptacle located on the propane tank shutoff valve
and tighten firmly (L.H. thread). Open tank valve and check for gas leaks using a dish soap
solution. If the machine has been left for a long period, the gas line will need to be purged;
therefore, several attempts may be needed to start burner. Release knob and wait 5 minutes
before lighting pilot in the normal fashion.
Note: Continuous outdoor operation in freezing temperatures may require several tanks
manifolded together to maintain consistent vaporization of the propane. Contact your local Lp
gas distributor for multiple tank requirements and manifold assembly.
REQUIRED GAS MANIFOLD PRESSURE
See SPECIFICATIONS chart on page 6 for the requirements of your model.
Pressure tap located on automatic gas valve.
Certified for installation at 0 to 4500 Ft. altitude. Installations at over 4500 Ft. and up to 6000 Ft.
require a 4% deration of input rating, achieved by a slight reduction of gas pressure regulator
setting.
VENTING REQUIREMENTS
STATIONARY INSTALLATIONS
A draft diverter must be attached to the flue hood outlet. Use same size vent as draft hood outlet
and avoid short turns. Horizontal runs are not recommended. Never use a vent pipe smaller than
the draft hood. If total run is more than 25’, use larger size chimney. A 90 degree elbow is
equivalent to a run of 20 feet. OBSERVE CAN1 B49.1 and 2 installation code requirements.
IMPORTANT: All venting must be in accordance with applicable federal and state laws, and
local ordinances. Consult local heating contractors.

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CAUTION: If the heater is left unused for extended periods during sub-zero weather, a column
of freezing air will build up in the venting system. If the building has a negative pressure
condition, some of the freezing air will be drawn over the draft hood, spilling onto the heating
coil which will eventually cause it to freeze and rupture. Have an installer ensure that correct
draft conditions are maintained to prevent this costly occurrence.
LOCATED IN CONFINED SPACE
The confined space should have 2 permanent openings: one near the top and one near the bottom
of the enclosed area. The openings need to be a minimum of one square inch per 1000 BTU’s of
the total input rating of all units in the enclosed area. The openings shall grant free access to the
interior with sufficient passage from the outside. Consult a certified gas installer on location and
installation.
WARNING: If you do not follow these instructions exactly, a fire or explosion may result,
causing property damage, personal injury, or loss of life. Do not tamper with factory installed
controls.
PORTABLE PROPANE APPLICATIONS
An optional rain cap can be furnished to the flue outlet.
FREE AIR FOR COMBUSTION AND VENTING
If the unit is installed in an equipment room or other enclosure, care must be taken to supply
sufficient free air for combustion and ventilation. Observe CAN1 B49.1 and 2 InstallationCode
Requirements. Care should be taken to keep the base of the unit clear of trash or any object that
could interfere with combustion air to the burner. The installer will know how and where to
place a supply air duct, ensuring that the opening will not promote drafts that may blow out the
pilot. Keep area around machine clear to ensure air can get to the burner.
COMBUSTION AIR SUPPLY
Natural Gas or Propane is consumed; therefore, air is required for combustion, for draft hood
dilution, and for ventilation.
BASIC CONTROLS
The water heaters are equipped with automatic gas valves that have an electronic control with an
ignitor and a thermostat. A high temperature limit protects the system against excessive outlet
water temperature. A pressure switch prevents burner operation without water flow. A burner
“On-Off” switch is provided for manual control.

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OPERATING INSTRUCTIONS
TO OPERATE MAIN BURNER
Be sure water is flowing through water heater coil before turning on burner switch. Start the
pumping unit involved until a steady stream of water is flowing from the spray gun.
Turn burner switch to “On” position. Burner will ignite and remain in operation as long as there
is sufficient water flow to satisfy the pressure switch and temperature limit control. To shut off
main burner, turn burner switch to “Off”. For complete shutdown of the water heater, turn knob
on combination gas valve to “Off” position. Should the pilot outage occur, turn automatic gas
valve to “Off”. Wait 5 minutes to clear combustion chamber of accumulated gas and retry.
CONDENSATION FROM COIL
When cold water is being pumped through the heater coil and the burner is firing, condensation
may form at times on the coil and drip down the burner compartment. This can be particularly
noticeable on cold, humid days giving the false appearance of a leaking coil. A leaking coil is
identified by a continuously cycling pump. With the wand trigger off, the pressure gauge should
read 0 with no flow.
TO CHECK HEATER COILS FOR LEAKS
Start the pumping unit and allow it to run for a few minutes with the burner “Off”. Check the
burner compartment with a trouble light or flash light. If no leaks are visible, this will confirm
that occasional water dripping from the coil is due to condensation of the flue gases, when the
burner is firing.
GENERAL MAINTENANCE AND CARE
WINTERIZATION
If the water heater is likely to be exposed to freezing weather, then it should be winterized with
anti-freeze. Circulation of the anti-freeze solution through the coil by means of the pump is the
most fail-safe method.
WATER CONDITION
Use a softener on your water system if local water is known to be high is mineral content. The
advantages of soft water are very beneficial. Prevents scale buildup in heater coil, cleans better
with considerably less detergent, prevents streaking on painted surfaces and glass when rinsing.

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BURNER MAINTENANCE
WARNING: Repair of the burner is to be done by authorized and trainedburner
professionals only.
Due to periodic condensation dripping down onto the burner a scale build up may eventually
occur in the burner jet orifices.
BURNER REMOVAL
Shut off the gas supply line to the water heater. Disconnect ¾ pipe union in burner valve train.
Remove the two burner retaining nuts. Turn gas cock knob on combination gas valve to “Off”
position. Remove Boiler Assembly from frame.
TO CLEAN BURNER JETS
Select proper size drill for type of gas involved (see SPECIFICATIONS). Hand turn jet drill to
clean burner. Air blow scale from around the burner jets.
CAUTION: Ensure jet orifices are not changed, as this will change efficiency and safe operation
of heater.
DESCALING HEATER COIL
If heater coils develop excessive scale buildup they should be acidized to remove the scale.
Excessive scale in heater coils will reduce efficiency of the unit and affect recovery capacity.
DESCALING PROCEDURE
WARNING: Coil Descaling is to be done by qualified personnel only.
The best way to acidize the coil is with a circulation pump capable of handlingacids:
1. Fill a plastic container with a suitable acid diluted with water to desired strength.
2. Connect the discharge from the circulating pump to the hot water outlet on the water heater
with a suitable hose. Connect the inlet of the circulating pump to the acid container with suction
hose from the pump module and use it as a return hose to the acid container. As the acid
dissolves the scale it becomes neutralized, so about every five minutes add more acid to the
container until all the scale has been removed from the coil. Flush out coil thoroughly with water
after descaling.

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COMPONENT IDENTIFICATION
Flue Outlet
Coil Outlet
Coil Skin
Gas Valve
Water Inlet
Safety Relief
Valve
Adjustable
Thermostat

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Hot Water Tank Interior (Top Cover Removed):
Coil Outlet (zoomed in view):
High Limit
Switch
Hot Water
Outlet Quick
Connector
Rupture Disk
Ceramic
Casing
Coil
Inner Steel
Layer
Coil Skin (outer
steel layer)

16
TROUBLE SHOOTING GUIDE - BURNER SYSTEM
Problem
Cause
Remedy
1. Pilot Does Not Light
a. Gas leak in pilot feed tube
a. Check all Fittings with soap
solution.
b. Low service supply
pressure
b. Ensure that gas supply meets the
required pressure for your model
indicated on the SPECIFICATIONS
chart (page 6). Check gas supplier if
not within range.
c. Bad Electrical Ground
d. Check ground connection to pilot
bracket.
2. Nuisance Pilot Outage
a. Check causes 1a, 1b, 1c,
and 2b
b. Inadequate gas supply pipe size
to machine
b. If gas regulator has to be
adjusted to maximum pressure
to obtain desired water temperature,
this can result in pilot gas pressure to
dip extremely low on burner startup.
Also, excessive pressure can surge
through on burner shutdown. Check
1b at burner manifold whilefiring.
3. No Flame at Burner
a. Manual valve on gas supply line
closed
a. Open valve.
b. Pilot not igniting
b. Light Pilot.
4. Burner Fails to
Start
a. Check for loose
electrical connections
a. Tighten electrical connections.
b. Pressure switch not operating
b. Repair or replace flow switch.
c. Limit control inoperative
c. Replace high limit control.
d. Automatic valve inoperative
d. Replace automatic gas valve.