Lochinvar 000 - 300, EB-EWU-02 User Manual

The information contained in this manual is
intended for use by qualified professional installers,
service technicians or gas suppliers. Consult your local
expert for proper installation or service procedures.

1. This appliance does not have a pilot. It is equipped with
an ignition device which automatically lights the
burner. Do not try to light the burner by hand.

2. BEFORE OPERATING, smell around the appliance
area for gas. Be sure to smell next to the floor because
some gas is heavier than air and will settle to the floor.

3. Use only your hand to turn the gas control lever. Never
use tools. If the lever will not turn by hand, don't try to
repair it, call a qualified service technician. Force or
attempted repair may result in a fire or explosion.

4. Do not use this appliance if any part has been under
water. Immediately call a qualified service technician
to inspect the appliance and to replace any part of the
control system and any gas control which has been under
water.

USER’S INFORMATION MANUAL

HOT WATER HEATING BOILERS

DOMESTIC WATER HEATERS

150,000 - 300,000 Btu/hr MODELS

EB-EWU-02

IMPORTANT

INSTALLER

- AFFIX INSTALLATION

MANUALADJACENT TO THE BOILER

CONSUMER

- RETAIN THE USER’S
INFORMATION MANUAL FOR FUTURE
REFERENCE

DO NOT Use this appliance if any part has been

under water. The possible damage to a flooded
appliance can be extensive and present numerous
safety hazards. Any appliance that has been under
water must be replaced.

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WARNING

If the information in this manual is not followed
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.

This appliance MUST NOT be installed in any
location where gasoline or flammable vapors are
likely to be present.

• Do not try to light any appliance.

• Do not touch any electric switch; do not use any
phone in your building.

• Immediately call your gas supplier from a
neighbors phone. Follow the gas supplier’s
instructions.

• If you cannot reach your gas supplier, call the fire
department.

• Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.

USER WARNING

Should overheating occur or the gas supply fail to
shut off, do not turn off or disconnect the electrical
supply to the pump. Instead, shut off the gas supply
at a location external to the appliance.

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WARNING

WHAT TO DO IF YOU SMELL GAS

LIGHTING INSTRUCTIONS

FOR YOUR SAFETY,

READ BEFORE OPERATING

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WARNING

If you do not follow these instructions exactly, a
fire or explosion may result causing property
damage, personal injury or loss of life.

1. STOP! Read the safety information above.

2. Turn off all electrical power to the appliance.

3. Remove the upper front access panel

4. Turn the power switch on the inside of the cabinet to
"OFF" position.

5. Set the thermostat to the lowest setting.

6. This appliance is equipped with an ignition device which
automatically lights the burners. DO NOT try to light
the burners by hand.

7. Turn the gas control knob on the gas valve clockwise to
the "OFF" position.

FIG. 1 Combination Gas Valve

8. Wait five (5) minutes to clear out any gas. If you smell
gas, STOP! Follow the instructions in the safety
information "What To Do If You Smell Gas". If you
don't smell gas, go on to the next step.

9. Turn the gas control knob on the gas valve
counterclockwise to the "ON" position.

10. Set the thermostat to the desired setting.

11.Turn the power switch on the inside of the cabinet to the
“ON” position.

12. Replace control access panel.

13. Turn on all electrical power to the appliance.

14. If the appliance will not operate, follow the instructions
"To Turn Off Gas To Appliance" and call your service
technician or gas supplier.

1. Turn off all electric power to the appliance if service is
to be performed.

2. Turn the gas control knob on the gas valve clockwise to
the "OFF" position. Do not force.

The hot surface ignition module is not repairable. Any
modification or repairs will invalidate the warranty and
may create hazardous conditions that result in property
damage, personal injury, fire, explosion and/or toxic gases.
A faulty ignition module must be replaced with a new unit.
The hot surface igniter is also the flame sensor.

Call a qualified service technician if service is required on
the hot surface ignition system.

FIG. 2 Water Connections
Inlet and Outlet Connections

For ease of service, install unions on inlet and outlet of the
appliance. The connection to the appliance marked "Inlet"
on the header should be used for return from the system.
The connection on the header marked "Outlet" is to be
connected to the supply side of the system.

2

LIGHTING INSTRUCTIONS

TO TURN OFF GAS TO APPLIANCE

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WARNING

Should overheating occur or the gas fail to shut
off, do not turn off or disconnect the electric
supply to the pump. Instead, shut off the gas
supply at a location external to the appliance.

HOT SURFACE IGNITION SYSTEM

WATER CONNECTIONS

This appliance is supplied with a relief valve(s) sized in
accordance with ASME Boiler and Pressure Vessel Code,
Section IV ("Heating Boilers"). The relief valve(s) is
installed in the vertical position and mounted in the hot
water outlet. No valve is to be placed between the relief
valve, and the appliance. To prevent water damage, the
discharge from the relief valve shall be piped to a suitable
floor drain for disposal when relief occurs. No reducing
couplings or other restrictions shall be installed in the
discharge line. The discharge line shall allow complete
drainage of the valve and line. Relief valves should be
manually operated at least once a year.

This appliance has five venting options. They are:

1. Conventional Negative Draft Venting

Conventional negative draft venting with vertical
termination.

2. E+ with a Vertical Conventional Vent

E+Vent with a vertical conventional vent for flue
products and a combustion air pipe from either the
sidewall or roof top.

3. Direct Venting with Sidewall Terminations

Direct vent with sidewall terminations for flue
products and combustion air.

4. Direct Venting with Vertical Terminations

Direct vent with vertical through-roof
terminations for flue products and combustion air.

5. Outdoor Installation

Outdoor installation consists of the installation of
a special vent cap / top assembly, gas valve cover,
deflectors, and a weatherproof junction box.

All appliances are shipped from the factory
equipped for conventional negative draft venting.
All other optional vent systems require the
installation of specific vent kits and venting
materials. See the Installation and Service Manual
for a detailed explanation of the installation
requirements for each venting system, components
used and part numbers of vent kits for each model.

Provisions for combustion and ventilation air must be in
accordance with Section 5.3, Air for Combustion and
Ventilation, of the latest edition of the National Fuel Gas
Code, ANSI Z223.1, in Canada, the latest edition of CGA
Standard B149 Installation Code for Gas Burning
Appliances and Equipment, or applicable provisions of the
local building codes.

E+ Vent and Direct Vent Units

These optional venting systems use two pipes, one pipe to
exhaust flue products and one pipe to supply combustion
air directly to the appliance. The optional vent systems
have specific material and installation requirements. The
combustion air pipe for the optional vent systems may
terminate horizontally with a sidewall air inlet or vertically
with a rooftop air inlet, based on the venting system
installed. A detailed explanation of the installation
requirements for each venting system, components used
and part numbers of vent kits for each model is included in
the Installation and Service Manual. No additional
combustion air openings are required for the mechanical
room when the optional two pipe venting systems are
properly installed.

3

RELIEF VALVE

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CAUTION

Avoid contact with hot discharge water.

VENT SYSTEM OPTIONS

IMPORTANT:

Examine the venting system at least once a year.
Check all joints and vent pipe connections for
tightness. Also check for corrosion or
deterioration. Immediately correct any problems
observed in the venting system.

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WARNING

Using other vent or air intake materials, failure
to properly seal all seams and joints or failure to
follow vent pipe manufacturer's instructions can
result in personal injury, death or property
damage. Mixing of venting materials will void
the warranty and certification of the appliance.

COMBUSTION AND VENTILATION AIR

REQUIREMENTS FOR

CONVENTIONALLY VENTED

APPLIANCES

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CAUTION

Under no circumstances should the equipment room
ever be under a negative pressure. Particular care
should be taken where exhaust fans, attic fans, clothes
dryers, compressors, air handling units, etc., may take
away air from the unit.