Omega OME 412 User manual

OME 412 Instantaneous Water Heater
Installation Manual and Owner’s Guide
FOR YOUR SAFETY
This product must be installed by a licensed
professional technician or gas fitter
qualified in water heater installation to
comply with the laws of the Commonwealth
of Massachusetts and/or any State.
Check your local codes and regulation.
This manual is correct as of the date of
publication, but regulations are in continual
change or update. Only your professional
installer will be updated in regard to all
local Codes pertaining to the installation of
this water heater.
Warning
If the information and instructions in this
manual is not followed exactly, a fire or
explosion is possible, causin
g
property
damage, personal injury or death.
Warning
Any Gas appliance creates flue gasses,
carbon monoxide gas, which can cause
serious injury or death. Improper
installation, and/or operation, or installation
by unqualified person, will void warranty.
Installation and service must be performed
by a qualified installer, service agency or
your gas supplier.
Suitable for
potable water heating
or space heating
Features
* Energy conservation,
* Endless hot water on demand,
* Compact, wall mount, space
saving,
* Computer controls for safety and
reliability,
* Electronic ignition, no pilot light,
* The only Tank to Tankless
replacement kit available in the
market witch do not require
plumbing modification

2
Table of Contents
Specification…………Page 2
Package inventory…Page 3
Safety talk ……..……Page 3
Operation…………….Page 4
Safety Systems……..Page 5
Installation………… Page 5
Operation……………Page 7
Temperature increase
Diagram Page 8
Specification
Natural Gas Input Minimum 28,000 Btu
Maximum 92.000Btu
LPG Input Minimum 27.000 Btu
Maximum 92 000 Btu
Gas Connection ½” NPT
Water Connection 3/4 NPT
Water pipes location On the top of the
unit.
Water Pressure Min 19 psi
Max 150 psi
Recommended 55 psi
Natural Gas Pressure
Inlet Min 0.33 psi
Max 0.43 psi
LP Gas Pressure Inlet Min 0.43 psi
Max 0.47 psi
Weight 33 lbs
Dimensions 32.5" X 15.5" X 9.5"
Electrical power used 2 D cell Batteries
Ignition Electronic ignition
Safeties: Ion flame detector
Max temp sensors
Water leak sensor
Flame inspection
window
Anti freezing device
Pressure sensor/device

3
Congratulations on your purchase of an
OMEGA OME412 Gas Tankless Water
Heater.
You’re about to discover that not all water
heaters are created equal. The Omega
Comfort has made possible the design and
production of this efficient and incredibly
affordable Tankless water heater that will
provide you with many years of uninterrupted
service. It is the mission and goal of the
Omega Comfort to continue to combine
innovation, quality, affordability and
reliability in all of its Tankless water heaters.
Once again, thank you and congratulations.
Before going any further, check and make
sure that the following items accompany
your water heater. There are two plastic
pouches in the Styrofoam packaging that
contain necessary hardware.
Before we go any further let’s make a
inventory:
The first pouch will hold the two knobs for
the unit.
They are the same so no designation is
necessary.
* Mounting brackets and bolts available on
request only.
- four bolts for hanging the unit
The second will hold:
- The Energy consumer guide
-The lather from the president
-This installation and instruction manual
-Warranty statement
-The business opportunity proposal
-The Discount tickets.
-They are also 2 mounting brackets taped on
the back of the unit.
Safety Talk
1. Always follow all local codes, or in
absence of local codes, follow the
actual edition of National Fuel Gas
Code, ANSI Z223.1/NFPA 54 in USA or
Installation Codes for Gas Burning
Appliances in Canada, the CGA
standard, CAN/CGA B149.1 or
CAN/CGA B 149.2
2. Check the rating plate for the correct
gas type, gas pressure, water
pressure, and electrical rating. DO
NOT INSTALL the unit if any of those
characteristics can’t be met.
3. If during unpacking, you observe any
damages on the cabinet, flue parts or
electrical cable of the water heater,
STOP UNPACKING!
DO NOT INSTAL until you notified
the factory and the unit is properly
inspected. Always follow the factory
technician suggestions.
4. Properly ground the unit in accordance
with local codes and in absence of
those with the National Electrical
Codes, ANSI/ NFPA 70 in the USA
or Canada Electrical Code Part 1 in
Canada.
5. If any problem arrives turn of the gas
first from the valve and then the cold
water supply. Call a trained technician,
the Gas Company or our telephone
hotline at [phone] for
instructions.
6. Use caution in planning you
installation. For maximum efficiency it
should be installed at equal distance
from all consumers, easy to access,
shortest distance from the venting

4
exit. For best safety, always install
gas appliances out of the reach of
the children’s.
7WARNING: Do not use this
unit if ANY part was under water.
Immediately call a certified or
trained technician to inspect and
service the unit as necessary.
8Do not open the unit if gas,
water and electrical is not
disconnected. Severe burns,
scalding or even death can occur if
the unit is not cold to thatch before
opening.
9If any repairs where attempted by
an untrained personal, the warranty
is void.
10 Do not reverse gas with water
pipes. Severe damages to the unit,
other appliances on the house and
your Gas line system will occur.
11 Do not reverse cold and hot water
pipes. Severe damages to the unit
will occur and warranty will be void
12 Follow the diagram bellow when
you install your OME 412 water
heater.
7.
Operation
OME 412 is a instantaneous, thankless
water heater designed to efficiently supply
domestic hot water.
We combine the principle, which is been
around from the beginning of the 1900’
with today technical know how, and we ad
every safety we could think about to give
you the ultimate in domestic water
heating.
When you open the hot water faucet, the
computer sensors detect the
depressurization of the line and command
the gas valve and the ignition relay control
the commencing of the burning cycle.
A minimum of 0.6 Gallons per minute is
required to ignite, but only 0.4 gallons per
minute to maintain the burners on.
During the operation, the computer
monitor and adjust the temperature and
flow of the water and gas, to insure the
total burning of your fuel.
As long as your gas, water and unit is on,
just by opening of your faucet you will
have an endless supply of hot water.
-To turn your water heater on, just
open your faucet.
-To turn your water heater off, just
close your faucet.

5
Temperature
The output temperature of the
OME 412 is been preset by the factory
NOT TO EXCEED 120 F
This is controlled by the computer and
Temperature limiters sensors and can
not be adjusted higher by any
technician.
WARNING
Temperature over 120 F (50 C) can
cause severe burns or even death. The
Disabled, elderly and children’s are at a
high risk of being injured by high
temperature of water.
Always feel the temperature of the water
before you enter in to the shower.
Do not leave disabled, elderly and
children’s unsupervised.
SAFETY SISTEMS
OME 412 is equipped with the following
safety systems:
- Electronic Ignition- Your unit will
never have a pilot light burning gas day
and night and wasting your gas and
presenting a fire danger
- ION technologies – This system
read the flame 20 times a minute, and
detects temperature of the flame. If the
temperature does not denote a fire, the
unit will attempt reigniting the flames.
After the second unsuccessfully attempt
the system will shut down your gas flow,
therefore eliminating discharging of
unburned gas and the danger of
explosion.
This unit passes the most stringent
emission tests in the industry.
-Space age insulation:
-The entire unit is “Cold to touch” The
radiant temperature on any place on the
unit is under 100 F so the possibility of
“Fire by contact” is eliminated.
- Freeze Prevention- We see no reason
to install your water heater outside. OME
412 is been design for inside installation so
therefore do not need expensive and
energy consuming resistors to keep the
unit from freezing.
- Over pressure valve- to eliminate any
possibility of water overpressure due to a
malfunction.
- Alloy coating
Heater Exchanger is not exposed cooper like
on most of the units on the market, but is
coated with a special alloy which is able to
sustain, with out damage, temperatures in
excess of 1500 F. ALL of those safeties are
incorporated in the unit with only one reason
in mind:
You, the customer!
INSTALATION
Location
This instantaneous water heater is a
complete, perfect replacement kit system to
replace your old tank unit with out any
plumbing modification.
The recommended distances from immediate
walls or other object is as follow:
-4 inch from the sides,
-8 inches from the top. (ceiling or roof)
-3 inches from the front.
-24 inches from the floor is required by the
fire codes but we recommend to have it
installed eyed site level for easy control,
supervision or maintenance.
- Use the 2 brackets provide for installation.
Find the studs and connect the 2 closest
studs together with the bracket. The water
heater
do not need to be in the center of
the bracket.
Hung the water heater as

6
needed on any treaded hole in the bracket
with the bolts provided.
Water connections
-Use the same flex pipes you had on your
old tank water heater or replace them with
new ones if the old ones are rusted or
damaged. On the hot side (left side of the
unit!) as closest possible to the unit install
a Pressure relief valve.
NOTE:
Temperature relief valve is not
necessary or required because the
unit has a integrated, redundant over
temperature protection system.
-The pipe in the discharge part of the valve
has to be of a minimum ½ inch galvanized
or cooper pipe
-The discharge valve has to vent to the
exterior of the building
-The discharge line is not be allowed to
have treads on the end.
-The discharge line can not be run in an
upward direction
-The discharge line must terminate
between 6” and 24 inch above ground
level.
Gas Installation
The gas line is from the bottom of the unit:
Connect the gas unit thru hard line or a
approved flex hose not less then ½
“diameter. You can use your old flex hose
if is sufficient long and at of list ½”
diameter.
Warning:
Your line has to have a pressure of
minimum 0.33 PSI and the capacity
to move a sufficient quantity of gas to
produce 95.000 Btu.
Lengthy gas pipe with out step-
downs will not be able to supply the
necessary gas volume for the unit
In order that the unit to work you need to
install 2 Dcell batteries. (Not provided!)
Warning: Follow the polarity of
the batteries on installation. Incorrect
batteries installation will render the
unit inoperative.
The freezing device is not adjustable, do not
turn or disassemble. Only a authorized
technician can perform maintenance on the
anti-freezing device
Maintenance
The unit is virtual maintenance free with the
exception of the de-scaling every 1 to 3
years based of the PH of the local water
supply. The harder is the water, more often
the de-scaling has to be done. Ask a local
professional for advice in regard to the
composition of the water. Your local Water
Company or your local Gas Company can
help you with the necessary data.
De-scaling involve harsh chemicals and
specialized tools and can only be done by a
professional.

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Warning!
-Do not attempt to do it
yourself.
-Severe burns can occur if no
specialize equipment are used
-Improper chemicals can harm
the water heater and/or the
plastic and rubber parts
rendering the warranty void.
Operation.
-Open the gas valve
-Open the water valve
-Install 2 fresh Dcell batteries
- Check for gas and water leaks
Warning:
Do not check the gas leak with open
flame. Severe burns and/ fire can be
produced in case of gas leaks.
- Adjust the gas knob to maximum
-Adjust the water Knob to maximum
volume
- Open a water faucet as close as possible
to the unit.
If the unit do not light up then shut up and
start again
Warning:
In order to evacuate the air from the
gas line it may be necessary to repeat
the operation 3 to 5 times based on
the length of the gas line.
- As soon as you see the unit light up leave it
to run for at list 5 minute.
- Check the temperature of the water:.
- If the water is too cold your water volume
is too big. Need to reduce the overall water
flow thru the unit to 12 liters per minute or
until the temperature of the resulting water
is acceptable.
- If the water is too hot, reduce the gas flow
from the Gas Knob
-Repeat the procedure with at list 3 to 5
minute time in between to leave time for the
“new” water to reach the faucet and the
pipes to reach the temperature of the water.
Warning:
-Use only small increments by dividing
the scale on at list 6 segments. Small
increments make big differences.
Once you achieve the desired temperature
you do not need to thatch again the dials.
The fine tune adjustments are made by
mixing your hot water with cold water at the
faucet
Warning:
If after 5-10 minutes the unit suddenly
shuts-up a overheating problem exist:
The unit go over 140F and the unit shuts
up.
The unit will not start before you close
the faucet and reopen again.
Fix: Dial back the gas knob a 1/6 of the dial.
Also it can be problem of interaction
between the instantaneous water heaters
and “water savers”

8
We recommend the elimination of the water savers on the back of the shower
heads if a repeat interruption of the hot water occurs.
Any problem of the installation and maintenances can be asked at:
888-866-2118
Monday to Friday 9.00 Am to 5.00 PM
Other factors to be taken in consideration
OME 412 Outlet Temperature Chart
Flow Rate
GPM 45 F Inlet Temp. 50 F Inlet Temp. 55 F Inlet Temp. 60 F Inlet Temp. 65 F Inlet Temp. 70 F
Inlet
Temp
2.25 130* 130* 130* 130* 130* 130*
2.50 124 129 130* 130* 130* 130*
2.75 116 121 126 130* 130* 130*
3.00 109 114 119 124 129 130*
3.25 104 109 114 119 124 130
3.50 101 104 109 114 119 125
3.75 95 101 105 110 115 120
4.00 92 97 102 107 112 117
4.25 89 94 99 104 109 114
4.50 86 91 96 101 106 111
4.75 84 89 94 99 104 109
* The result for Output temperature was reduced to 130 Degrees, by the temperature safety devices (anti-scalding
device) included in the design of the unit.
** The normal shower temperature
Warning :Exposure to water at 125*F can produce first degree burns in 15 seconds
Typical Flows and Temp for Household Fixtures
Fixture
Type
---->
Lavatory Shower
Low flow
Shower
High
flow Kitchen
Sink Bathtub Jacuzzi Dish Washer Washing Machine
Flow Rates 0.8 - 1.5 1.0 -1.7 1.7- 3.0*1.0 -1.5 2.0-4.0 1.0-1.5 1.5-2.0
Prevailing
Temp.
Use 80°
to
105°
100°
to
110°
105°
to
115°
90°
to
110°
105°
to
115°**
80°
to
95 °
Flow Rates in Gals/ Minute
Temperature in degrees °F
* Energy Department website defines a “Legal” shower as a shower which use no more then
1.76 gallons/minute.
** All 9 years old or newer Dishwashers have their own heater element so incoming water
temperature is somehow irrelevant.