Bradford White RTG 199 MEN, RTG 199 MEX Installation And Operation Instructions Manual
Installation and Operation instructions
Warning: If the information in this manual is not followed exactly, a fire
or explosion may result causing property damage, personal injury or
death.
Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of this or any other appliance.
Installation and service must be performed by a trained and certified
installer, service agency or the gas supplier.
Improper installation, adjustment, alteration, service or maintenance
can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service
agency or the gas supplier.
In the Commonwealth of Massachusetts this product must be installed
by a licensed plumber or gas fitter.
Upon completion of the installation, these instructions should be
handed to the user of the appliance for future reference.
What to do if you smell gas
• Turn off the gas shut-off valve. Open windows and doors.
• Do not try to light any appliance.
• Do not touch any electrical switch, telephone, and do not use outlets.
• Extinguish all open flames. Do not smoke! Do not use lighters!
• Warn all occupants of the building. Do not ring doorbells!
• If you can hear gas leaking, leave the building immediately. Prevent
others from entering the building and notify the police and fire
department from outside the building.
• From outside the building, call the gas utility company and a trained
and certified installer.
INDOOR MODEL
RTG 199 ME
RTG 199 MEN - Natural Gas
RTG 199 MEX - Propane (LP Gas)
Temperature Modulated with Electronic Ignition Suitable for heating potable water and space heating
(Intended for variable flow applications)
6 720 811 615 / 238-50792-00A (2015/04)
Table of contents
Table of contents
1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . . 3
1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 FCC rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Appliance details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Specifications (Technical data) . . . . . . . . . . . . . . . . . . . . 7
3.3 Unpacking the heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3.4 General rules to follow for safe operation . . . . . . . . . . . . 9
3.5 Dimensions and minimum installation clearances . . . 10
4 Installation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Specialized tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.3 Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.4 Combustion air requirements . . . . . . . . . . . . . . . . . . . . 24
4.5 Proper location for installing your heater . . . . . . . . . . 24
4.6 Heater placement and clearances . . . . . . . . . . . . . . . . 25
4.7 Hanging appliance on the wall . . . . . . . . . . . . . . . . . . . 25
4.8 Mounting installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4.9 Gas piping & connections . . . . . . . . . . . . . . . . . . . . . . 27
4.10 Water connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
4.11 Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
4.12 Domestic hot water recirculation . . . . . . . . . . . . . . . . . 30
4.13 Space heating applications . . . . . . . . . . . . . . . . . . . . . . 31
4.14 Measuring gas pressure . . . . . . . . . . . . . . . . . . . . . . . . 32
5 Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.1 Electrical power supply . . . . . . . . . . . . . . . . . . . . . . . . . 33
5.2 Position of the fuses in control unit . . . . . . . . . . . . . . . 33
8 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.2 Burner does not ignite when hot water is turned ON . . 42
8.3 Water is too hot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.4 Water is not hot enough . . . . . . . . . . . . . . . . . . . . . . . . . 42
8.5 Low water flow/pressure . . . . . . . . . . . . . . . . . . . . . . . . 42
8.6 Hot water temperature fluctuates at tap . . . . . . . . . . . . 43
8.7 Noisy burner/heater during operation . . . . . . . . . . . . . . 43
9 Problem solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
9.1 Error code diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . 44
10 Electrical diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
11 Sensor resistance charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
12 Functional scheme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
13 Interior components diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 50
13.1 Interior components . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
14 Protecting the environment . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
15 LIMITED TANKLESS HEATER WARRANTY . . . . . . . . . . . . . . . . 52
16 Installer Checklist to be completed by installer upon
installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
6 Operation instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.1 Description LCD Display . . . . . . . . . . . . . . . . . . . . . . . . 34
6.2 For your safety read before operating
your water heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.3 Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.4 Temperature selection . . . . . . . . . . . . . . . . . . . . . . . . . 35
6.5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.6 Reset button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.7 Program button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.8 Locked condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
7 Maintenance and service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.1 Annual maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.2 Winterizing for seasonal use . . . . . . . . . . . . . . . . . . . . . 37
7.3 Mineral scale build-up . . . . . . . . . . . . . . . . . . . . . . . . . . 37
7.4 Adjusting CO2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
7.5 Program values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7.6 Control board diagnostics . . . . . . . . . . . . . . . . . . . . . . 41
2
RTG 199 ME – 6 720 811 615 (2015/04)
1 Key to symbols and safety instructions
1.1 Key to symbols
Warnings
Warnings in this document are identified by a warning
triangle printed against a grey background.
Keywords at the start of a warning indicate the type and
seriousness of the ensuing risk if measures to prevent
the risk are not taken.
The following keywords are defined and can be used in this document:
• DANGER indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
• WARNING indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
• CAUTION indicates a hazardous situation which, if not avoided,
could result in minor to moderate injury.
• NOTICE is used to address practices not related to personal injury.
Important information
This symbol indicates important information where
there is no risk to people or property.
Key to symbols and safety instructions
If you smell gas
▶ Turn off the gas shut-off valve.
▶ Open windows and doors.
▶ Do not try to light the appliance.
▶ Do not touch any electrical switch, telephone, and do not use outlets.
▶ Extinguish all open flames. Do not smoke! Do not use lighters!
▶ Warn all occupants of the building. Do not ring doorbells!
▶ If you can hear gas leaking, leave the building immediately.
▶ Prevent others from entering the building and notify the police and
fire department from outside the building.
▶ From outside the building, call the gas utility company and a trained
and certified installer.
If you smell flue gas
▶ Switch off the appliance.
▶ Open windows and doors.
▶ Inform a trained and certified installer.
Insufficient ventilation may cause toxic flue gas to escape. Risk of
poisoning.
▶ Never close off or reduce the size of the air intake and outlet
openings.
▶ The appliance must not be operated until any obstructions have been
removed.
▶ Inform the system operator in writing of the problem and the
associated dangers.
Additional symbols
Symbol Explanation
▶ Step in an action sequence
Cross-reference to another part of the document
• List entry
– List entry (second level)
Table 1
1.2 Safety instructions
Read all instructions before installing. Perform the steps in the indicated
sequence. Have the water heater inspected by a trained service
technician at least once every year. Failure to comply with these
instructions can result in severe, possibly fatal, personal injury as well as
damage to property and equipment.
Installation and servicing
▶ Risk of fire when soldering and brazing!
Take appropriate protective measures when soldering and brazing
around combustible and flammable material.
▶ Ensure that only a licensed contractor installs or services the water
heater.
▶ On hot components use only material with adequate temperature
stability.
Installation and commissioning
▶ In the Commonwealth of Massachusetts, the water heater must be
installed by a licensed plumber.
▶ Do not install this device in rooms with a high moisture level
(e.g. bathrooms, saunas).
Function
▶ To ensure that the water heater functions properly, follow these
installation and maintenance instructions.
▶ Never close the blow-off line of the T&P safety valve. For safety
reasons, water may escape during heating.
Danger from escaping flue gases
▶ Ensure all vent pipes and chimneys are not damaged or blocked.
▶ Connect only one appliance to each vent system or chimney liner.
▶ The venting system piping must not feed into another air extraction
duct.
▶ Do not route the flue system piping through or inside another air
extraction duct.
Danger of explosion of flammable gases
▶ Work on gas components may only be carried out by a trained and
certified installer.
▶ Installation, gas and flue connection, initial commissioning, electrical
connections and annual maintenance must only be carried out by a
trained and certified installer.
Combustion air
▶ Keep the combustion air free of corrosive substances (halogenated
hydrocarbons that contain chlorine or fluorine compounds).
Never shut off safety valves!
▶ Water may escape from the safety valve at any time when the water
is being heated.
Inspection/maintenance
▶ Servicing and repairs may only be carried out by a trained and
certified installer.
▶ Immediately correct all faults to prevent system damage.
▶ Use only Bradford White spare parts! Damage caused by the use of
parts not supplied by Bradford White may void the warranty.
Instruct the customer
▶ Explain to the customer how the appliance works and how to operate
it.
▶ Inform the customer that he/she must not carry out any alterations or
repairs.
Danger from electric shock
▶ Ensure that only an authorized contractor performs electrical work.
▶ Before performing electrical work, disconnect the power and secure
the unit against unintentional reconnection.
▶ Ensure the system has been disconnected from the power supply.
RTG 199 ME – 6 720 811 615 (2015/04)
3
Key to symbols and safety instructions
Risk of scalding at the hot water draw-off point
▶ When the water heater is in operation, temperatures in excess of
122 °F (50 °C) can occur. To limit the temperature at the tap, install
a thermostatic DHW mixing valve.
▶ Water heated for washing the laundry, dishes and for other cleaning
purposes can cause scalding and permanent injuries.
▶ Children, elderly, and handicapped persons are more likely to be
permanently injured by hot water. Never leave such individuals in the
tub or shower unattended under any circumstances. Children must
not be allowed to operate hot water faucets themselves or to fill a
bathtub.
▶ If the building has occupants in the above groups who operate hot
water faucets, or state laws / local ordinances stipulate specific
water temperatures, take the following precautions:
– Use the lowest possible temperature setting.
– To prevent scalding, install a tempering device, such as an
automatic mixing valve, at hot water tap or water heater. Select
and install the automatic mixing valve in accordance with the
valve manufacturer's recommendations and instructions.
▶ Water exiting from drain valves can be extremely hot. To avoid
injuries:
– Check that all connections are tight.
– Direct exiting water away from people.
▶ Measures must be taken to protect against excessive temperature
and pressure! Installation of a T&P safety valve is required.
To protect against corrosion and ensure compliance with the rules for
electrical safety, observe the following points:
▶ Use metal fittings for potable water heating systems with plastic
piping.
▶ Use only original accessories from the manufacturer.
▶ When installation of the water heater is complete, inspect the ground
conductor (including metal fittings).
Maintenance
Customers are advised to:
▶ Sign a maintenance and inspection contract with an authorized
contractor. Inspect and maintain the water heater as necessary and
on a yearly basis. Service as needed.
▶ Use only genuine spare parts.
Flooding
▶ After a flood, do not use the appliance if any part has been
submerged. Damage to appliances that have been submerged can be
quite severe and pose numerous safety risks.
▶ Every appliance that has been submerged must be replaced.
4
RTG 199 ME – 6 720 811 615 (2015/04)
Key to symbols and safety instructions
For your safety
▶ Do not store or use gasoline or other flammable, combustible or
corrosive vapors and liquids in the vicinity of this or any other
appliance.
DANGER: Fatal accidents!
Carbon monoxide poisoning.
▶ Carefully plan where you install the heater. Correct
combustion air supply and flue pipe installation are
very important. If a gas appliance is not installed
correctly, fatal accidents can result such as carbon
monoxide poisoning or fire.
DANGER:
Carbon monoxide poisoning.
▶ Exhaust gas must be vented to outside using
approved vent material. See table 8, page 13 (In
Canada use only ULCS636 approved material). Vent
and combustion air connector piping must be sealed
gas-tight to prevent flue gas spillage, carbon
monoxide emissions and risk of fire, resulting in
severe personal injury or death. Approved vent
terminations must be used when penetrating to the
outside.
WARNING:
▶ The maximum inlet gas pressure must not exceed the
value specified by the manufacturer and the
minimum value listed is for the purpose of input
adjustment.
NOTICE:
▶ If a water heater is installed in a closed water supply
system, such as one having a backflow preventer in
the cold water supply line, means shall be provided
to control thermal expansion. Contact the water
supplier or local plumbing inspector on how to
control this situation.
WARNING: Fire danger!
▶ Keep appliance area clear and free from combustible
materials, gasoline and other flammable vapors and
liquids.
NOTICE:
▶ Do not obstruct the flow of combustion and
ventilation air.
DANGER: Electric shock!
▶ Field wiring connections and electrical grounding
must comply with local codes, or in the absence of
local codes, with the latest edition of the National
Electric Code, ANSI/NFPA 70, or in Canada, all
electrical wiring must comply with the local codes
and the Canadian Electrical Code, CSA C22.1 Part 1.
DANGER: Electric shock!
Shock hazard: line voltage is present.
▶ Before servicing the water heater, unplug power
supply cord from outlet. Failure to do so could result
in severe personal injury or death.
WARNING: Damage to the appliance from over
pressure.
▶ The heater must be disconnected from the gas
supply piping system during any pressure testing of
that system at test pressures equal to or more than
0.5 psi.
NOTICE:
▶ The appliance should be located in an area where
leakage of the heater or connections will not result in
damage to the area adjacent to the appliance or to
lower floors of the structure. When such locations
cannot be avoided, it is recommended that a suitable
drain pan, adequately drained, be installed under the
appliance. The pan must not restrict combustion air
flow.
NOTICE: Appliance malfunction!
▶ If power is lost while appliance is operating. Turn off
both water and power for 15 seconds to reset
device.
WARNING: Risk of scalding and property damage.
▶ Precautions must be taken prior to manually
operating the relief valve to avoid contact with hot
water discharged from the relief valve and to prevent
water damage.
NOTICE: Appliance damage!
▶ Label all wires prior to disconnection when servicing
controls. Wiring errors can result in improper and
dangerous operation. Verify proper operation after
servicing.
WARNING: System damage!
▶ If a relief valve discharges periodically, this may be
due to thermal expansion in a closed water supply
system. Contact the water supplier or local plumbing
inspector on how to correct this situation. Do not
plug the relief valve.
WARNING: Property damage!
▶ If the water heater is used in a space heating
application, all piping and components connected to
the water heater must be suitable for use with
potable water.
RTG 199 ME – 6 720 811 615 (2015/04)
WARNING: Personal Injury from toxic chemicals.
▶ Toxic chemicals, such as those used for boiler
treatment, shall not be introduced into the potable
water used for space heating.
5
FCC rules
WARNING: Personal Injury from toxic chemicals.
▶ A water heater which will be used to supply potable
water shall not be connected to any heating system
or component(s) previously used with a nonpotable
water heating appliance.
WARNING: Installation in mobile homes.
▶ Installation in mobile homes shall conform to Title 24
CFR, part 3280 and/or CAN/CSA Z240 MH Series,
Mobile Homes.
2 FCC rules
FCC: This device complies with Part 15 of the FCC rules. Operation is
subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Temperature Time to severe scalding
1)
120 °F (48 °C) longer than 5 minutes
125 °F (51 °C) 1.5 to 2 minutes
130 °F (54 °C) approx. 30 seconds
135 °F (57 °C) approx. 10 seconds
140 °F (60 °C) less than 5 seconds
145 °F (62 °C) less than 3 seconds
150 °F (65 °C) approx. 1.5 seconds
155 °F (68 °C) approx. 1 second
Table 2 Approximate time-temperature relationship until there is a risk
of scalding
1) Source: Moritz, A.R. and Henriques, F.C., Jr. (1947). Studies of thermal injury.
II. The relative importance of time and surface temperature in the causation of
cutaneous burns, Am J of Pathol, 23, 695-720.
Fig. 1
The chart below shows the relationship between water temperature and
time until there is a risk of scalding. It can be used as the basis for
determining the safest water temperature for your application.
6
RTG 199 ME – 6 720 811 615 (2015/04)
Appliance details
3 Appliance details
3.1 Features
Parts
• Key Pad interface control.
• High power pre-mix compact burner with low NOx emissions.
• Modulating Gas Valve with constant gas:air ratio control.
• Modulating water valve for improved comfort and temperature
control.
High quality materials for long working life
• Copper heat exchanger.
• High efficiency Ceramat Burner.
• Compact space saver: mounts on a wall with a supplied bracket.
Features
• Easily removable one-piece cover.
• On/Off and Temperature control switches.
• Reset button.
• Program button (Selectable temperature default).
• Failure codes for easy diagnostics and repair.
• Real-time diagnostics for troubleshooting/informational purposes.
• Built in freeze prevention.
Note: The freeze prevention kit is designed to provide protection for the
water heater down to approximately 5 °F for short term conditions only.
It will not protect the appliance in areas where the temperature is
routinely expected to be below freezing.
- The freeze prevention kit will not protect plumbing outside the
appliance from freezing. Precautions should be taken.
Bradford White is constantly improving its products,
therefore specifications are subject to change without
prior notice.
3.2 Specifications (Technical data)
Approved in US/Canada
Technical characteristics Units RTG 199 ME
Capacity
Maximum flow rate at a 45 °F
(25 °C) rise
Maximum flow rate at a 55 °F
(30.6 °C) rise
Maximum flow rate at a 75 °F
(41.7 °C) rise
Maximum flow rate at a 90 °F
(50 °C) rise
Maximum output BTU/hr (kW) 160,500 (47)
Maximum input BTU/hr (kW) 199,000 (58.3)
Thermal efficiency (Efficiency
in %)
Minimum Input BTU/hr (kW) 19,900 (5.8)
Temperature Control
Selection range °F ( °C) 100 - 140 (38 - 60)
Default temperature °F ( °C) 122 (50)
Stability °F ( °C) 2 ( 1)
Gas Requirement
Gas connection inches ¾ "
Peak load inlet gas pressure
Propane water column 8” - 13”
Natural Gas water column 3.5” - 10.5”
GPM (l/min) 7.3 (27.7)
GPM (l/min) 6.0 (22.7)
GPM (l/min) 4.4 (16.6)
GPM (l/min) 3.7 (13.9)
% > 83%
1)
Water
Hot water connection inches ¾ "
Cold water connection inches ¾ "
Minimum water flow
Minimum recommended
2)
GPM (l/min) 0.5 (1.9)
PSI (bar) 30 (2.07)
water pressure
Minimum well pressure PSI 40
Water valve material Polymer (PPS)
(Polypropylene
Sulfide)
Connections: Bottom of heater
Combustion
CO level ppm 250 (measured)
CO2 level (set from factory) % see table 36
Dimensions
Depth inches (mm) 11 ¼ (286)
Width inches (mm) 17 7/8 (452)
Height inches (mm) 30½ (775)
Weight pounds (kg) 67 (30.5)
Gas types
RTG 199 ME – 6 720 811 615 (2015/04)
Natural Gas
Table 3
7
Appliance details
Technical characteristics Units RTG 199 ME
LP Gas
Voltage
Nominal V AC 120
Frequency Hz 60
Amperage
Idle mA 40
Operation A 2.5
Noise db (A) 45 - 65
Water protection
3)
IP X4D
Table 3
1) To measure Gas Pressure, see Measuring Gas Pressure, chapter 4.14, page 32.
2) Activation varies with inlet water temperatures from 0.5 - 1.6 gallon/minute (1.9
- 6.1 l/m).
3) Protection against water drops.
If appliance is installed at elevations above 2000ft, refer
to chapter 4.3.8 Fan speed adjustment.
The RTG 199ME is not approved or designed for:
• Manufactured (mobile) homes, boats or any mobile installation.
(Modular homes are acceptable for installation).
• Use above 8000 ft A.S.L. altitude (see page 22).
• Outdoor installation without installation of Outdoor kit.
• Applications where inlet water temperature is higher than 140 °F
(60°C). A 3-way valve or mixing valve must be installed before
the appliance if inlet water temperature exceeds this limit.
3.3.2 Remove front cover
▶ Loosen the two Phillips head screws located on bottom rear of cover.
Safety devices
• Flame failure device (ionization flame rod sensor)
• Overheat prevention (temperature limiter)
• Inlet temperature sensor
• Outlet temperature sensor
• Back flow temperature sensor
3.3 Unpacking the heater
Before installing the unit, be certain you have the correct heater for
your type of Gas - Propane or Natural Gas. Identification labels are
found on the shipping box, and on the rating plate which is located on the
right side panel of the cover.
Fig. 3 Loosen the two screws
Fig. 2 Rating plate
[A] Serial number
[B] Type of gas
3.3.1 The box includes
• Tankless water heater
• Bracket for wall hanging the heater
• Installation manual
• Energy Guide label (in the front cover)
8
RTG 199 ME – 6 720 811 615 (2015/04)
Appliance details
▶ Lift front cover panel upward and remove.
Fig. 4 Remove the front cover
3.3.3 Remove combustion cover (service only)
▶ Open the four clips and remove the combustion cover.
In Canada: The Installation must conform with CSA B149.(1,2)
INSTALLATION CODES and /or local installation codes.
• 2. Carefully plan where you install the heater. Correct combustion air
supply and vent pipe installation are very important. If not installed
correctly, fatal accidents can occur, such as carbon monoxide
poisoning or fire.
• 3. When the unit is installed indoors and ROOM SEALED (twin pipe)
it is permitted to be located in bathrooms, bedrooms and occupied
rooms that are normally kept closed. See chapter 4.3 (page 11). If
the unit will be installed indoors and use indoor combustion air, the
place where you install the heater must have enough ventilation. The
National Fuel Gas Codes do not allow UNSEALED gas fired water
heater installations in bathrooms, bedrooms or any occupied
rooms normally kept closed. See chapter 4.4 (page 24).
• 4. You must correctly vent your heater. See chapter 4.3 (page 11) on
VENTING.
• 5. The appliance and its gas connection must be leak tested before
placing the appliance in operation.
The appliance must be isolated from the gas supply piping system by
closing its individual manual gas shutoff valve (not supplied with
heater) during any pressure testing at pressures in excess of ½ Psig
(3.5 kPa).
• 6. Keep water heater area clear and free from combustibles and
flammable liquids. Do not locate the heater over any material which
might burn.
• 7. Correct gas pressure is critical for the proper operation of this
heater. Gas piping must be sized to provide the required pressure at
the maximum output of the heater, while all the other gas appliances
are in operation. Check with your local gas supplier, and see the
section on connecting the gas supply. See chapter 4.9 (page 27).
• 8. Should overheating occur or the gas supply fail to shut off, turn off
the gas supply at the manual gas shut off valve, on the gas line. Note:
manual gas shutoff valve is not supplied with the heater but must be
field installed.
• 9. Do not use this appliance if any part has been underwater.
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 underwater.
• 10. Failure to install heater correctly may lead to unsafe operation
and void the warranty.
Fig. 5 Remove the combustion cover
3.4 General rules to follow for safe operation
• 1. You must follow these instructions when you install your heater. In
the United States: The installation must conform with local codes or,
in the absence of local codes, the National Fuel Gas Code ANSI
Z223.1/NFPA 54.
RTG 199 ME – 6 720 811 615 (2015/04)
9
Appliance details
3.5 Dimensions and minimum installation clearances
Fig. 6 Dimensions
[1] On/Off button
[2] Reset button
[3] Program key
[4] Power ON or stand-by LED
[5] LCD display
[6] Up button
[7] Down button
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RTG 199 ME – 6 720 811 615 (2015/04)
Installation instructions
4 Installation instructions
4.1 Specialized tools
The following specialized tools may be required for installation:
• Manometer
• Multi-meter
• Combustion Gas Analyzer
4.2 Introduction
Please follow these instructions. Failure to follow instructions may
result in:
▶ Damage or injury.
▶ Improper operation.
▶Loss of warranty.
DANGER:
▶ The water heater must be installed by a qualified
installer in accordance with these instructions. If
improperly installed, a hazardous condition such as
explosion or carbon monoxide poisoning could
result. Manufacturer is not responsible for
improperly installed appliances.
Fig. 7 Side view
For servicing access, a 2ft clearance is recommended to
the front cover.
Model RTG 199ME
TOP (A) 12”
FRONT (B) 1”
BACK 0”
SIDES 1”
FLOOR (C) 12”
Table 4 Minimum clearances
Common installation practice is to first determine the
venting/combustion air point of termination, then
design the piping layout back to the heater.
4.3 Venting
NOTICE:
▶ Do not reduce the exhaust or combustion air vent
pipe sizes.
▶ Do not common vent with any other vented appliance
or stove.
DANGER: Flue gas poisoning!
▶ Failure to vent the exhaust gases to the outside with
sealed stainless steel vent pipe (AL29-4C) may
result in dangerous flue gases filling the structure in
which it is installed.
WARNING:
▶ Do not mix vent pipe or joining methods from
different manufacturers.
WARNING:
▶ Approved terminators must be used for inlet and
exhaust vent systems to prevent rain from entering
the appliance. Failure to do so may result in damage
to the appliance. This failure is not covered under the
manufacturer’s warranty.
RTG 199 ME – 6 720 811 615 (2015/04)
CAUTION:
▶ The vent system must be installed by a qualified
installer in accordance with these instructions. If
improperly installed, a hazardous condition such as
explosion or carbon monoxide poisoning could
result. Manufacturer will not be responsible for
improperly installed appliances.
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Installation instructions
NOTICE:
▶ In areas where outside temperatures routinely come
close to freezing, sealed combustion operation is
required. Concentric termination or separate
terminations for combustion and vent, must be
installed on the same wall or roof surface; however,
never facing the direction of pre vailing winds. Failure
to do so may result in heat exchanger freezing and
bursting. This failure is not covered under the
manufacturer's warranty.
WARNING: Appliance malfunction!
▶ Protect the exhaust and inlet from leaves and debris
by installing a screen on the end of the termination.
¼ " mesh minimum opening recommended on
screen.
4.3.1 Vent material
Establish vent clearances that comply with the vent manufacturer's
specifications. In all cases, follow local codes. See table 5:
Item Diam. Material
Exhaust Vent 3 or 4 inches Sealed single wall stainless steel
(AL29-4C)
Fig. 9 Concentric kit vent assembly
Intake Vent PVC Sealed PVC or any other rigid pipe
Table 5 Venting Specifications
Horizontal venting systems only:
An optional stainless concentric vent/air intake termination can be used
to provide only one penetration point through the exterior wall (see fig.
8, 9 & 10). The concentric vent/air intake kit can be ordered from your
local wholesaler. Note: Only tee terminals are approved for use with the
concentric vent/air intake kit (see Table 6). Vent piping and tee terminal
used with kit must be from the same vent pipe manufacturer. The
appliance can also be installed with separate air intake and exhaust
piping (see Fig.16).
Fig. 10 Concentric kit installation
[LA] 12 inches
[LB] 3 inches stainless steel pipe
Fig. 8 Concentric kit
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RTG 199 ME – 6 720 811 615 (2015/04)
4.3.2 Vent specifications
Install appliance as close to point of vent termination as possible. The
exhaust piping must vent directly to the outside of the structure.
Horizontal sections of vent must pitch upward towards termination ¼"
for every foot of horizontal length, to prevent the pooling of condensate,
and be supported at 4 foot intervals with overhead hangers.
Exception: horizontal run between last elbow and termination must
pitch down to termination 1/4" per foot. Note: For horizontal
terminations, venting must terminate once it penetrates to the outside of
the structure. There must be no sections of vent pipe exposed to the
outdoors other than the termination. Note: Listed thimbles or collars are
necessary where venting passes through wall and ceiling partitions. If
the vent system passes through combustible areas where the vent
clearance requirements cannot be maintained, consult local codes. The
distance to combustibles using this chase technique is 1 inch. Note:
Type-B vent must never be used as the actual exhaust vent system for
the appliance, as it is not gas tight and illegal for use with this appliance.
This will create a serious health hazard and void the warranty.
3" VENTING Z flex Protech Heat Fab
Installation instructions
Company Contact info
Z-flex www.z-flex.com
800-654-5600
ProTech Industries www.protechinfo.com
800-766-3473
Heat-Fab www.heatfab.com
800-772-0739
Table 8 Vent manufacturers
Condensate drain requirements
An external condensate drain (not supplied with the heater) must be
installed under the following conditions:
• All vertical terminating vent installations.
• Horizontal terminating vent installations where the total linear vent
length is greater than 10 feet (3.1 m) for 3" and 5 feet (1.5 m) for 4".
• Vent installations where any section of the exhaust vent pipe passes
through an unconditioned space.
3"
2SVEEWCF0390 FSELB9003 9314
90° elbow
3" Tee
2SVSTTF03 FSTT3 9390TEE
Terminal
3" Horizontal
2SVSTB03 FSTB3 N/A
Terminal
3" horiz.
2SVSHTD03 N/A N/A
terminal
with damper
3" Vertical
2SVSRCF03 FSRC3 5300CI
Terminal
Table 6 3" Terminator Part Numbers
4" VENTING Z flex Protech Heat Fab
4"
2SVEEWCF0490 FSELB9004 9414
90° elbow
4" Tee
2SVSTTF04 FSTT4 9490TEE
Terminal
4" Horizontal
2SVSTB04 FSTB4 N/A
Terminal
4" horiz.
2SVSHTD04 FSRC4 5400CI
terminal
with damper
Twin pipe termination clearances
The minimum clearance between exhaust vent and combustion air inlet
terminations for twin pipe penetration is 3 feet.
Minimum combustion air and exhaust pipe length
The minimum exhaust pipe length is 1 foot (0.3m) of straight vent pipe.
The minimum combustion air pipe length is one 90° elbow.
Maximum combustion air and exhaust pipe length
The following tables display the maximum allowable straight pipe
lengths for combustion air and exhaust piping with consideration to the
number of elbows used. Reduce the equivalent length for each elbow
used from the maximum allowable length depending on the system
used.
Venting
Maximum
allowable
total vent
Length
Maximum
allowable
Exhaust
Length
Maximum
allowable
Intake
Length
Elbow
Equivalency
90° 45°
3" 57 ft 28.5 ft 28.5 ft 5 ft 2.5 ft
4" 122.5 ft 61.25 ft 61.25 ft 5 ft 2.5 ft
Table 9 Maximum Allowable Exhaust and Combustion Air Lengths
Use of elbows
It is recommended to limit the amount of elbows used in the exhaust and
combustion air piping to reduce fricti on in the air flow. The following lists
the maximum amount of 90 ° elbows allowed in either the exhaust or
combustion air piping:
4" vertical
2SVSRCF04 N/A N/A
terminal
Table 7 4" Terminator Part Numbers
For specific questions concerning vent material, specifications, usage or
installation, please contact the vent manufacturer directly.
RTG 199 ME – 6 720 811 615 (2015/04)
Max. number of 90° elbows 3" venting 4" venting
Max number of elbows 5 7
Table 10
Two 45° elbows are equal to one 90° elbow. Any
combination of 45° and 90° elbows may be used in
the vent system as long as the combination does not
exceed the maximum listed in table 9 above.
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Installation instructions
Calculation example for 3" venting:
Exhaust
System used Concentric
Number of 90° elbows needed: 1
Number of 45° elbows needed: 2
Table 11
Calculation of example
Max. length 28.5’
90° elbow reduction - 5’
sub-total = 23.5’
45° elbow reduction - 5’
Total = 18.5’
Table 12
For this example, the maximum allowable exhaust pipe
length is 18.5 feet.
Combustion air
System used Concentric
Number of 90° elbows needed: 2
Number of 45° elbows needed: 1
Table 13
Calculation example for 4" venting:
Exhaust
System used Twin pipe
Number of 90° elbows needed: 2
Number of 45° elbows needed: 2
Table 15
Calculation of example
Max. length 61.25’
90° elbow reduction - 10’
sub-total = 51.25’
45° elbow reduction - 5’
Total = 46.25’
Table 16
For this example, the maximum allowable exhaust pipe
length is 46.25 feet.
Combustion air
System used Twin pipe
Number of 90° elbows needed: 1
Number of 45° elbows needed: 2
Table 17
Calculation of example
Max. length 28.5’
90° elbow reduction - 10’
sub-total = 18.5’
45° elbow reduction - 2.5’
Total = 16’
Table 14
For this example, the maximum allowable combustion
air pipe length is 16 feet.
Calculation of example
Max. length 61.25’
90° elbow reduction - 5’
sub-total = 56.25’
45° elbow reduction - 5’
Total = 51.25’
Table 18
For this example, the maximum allowable combustion
air pipe length is 51.25 feet.
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RTG 199 ME – 6 720 811 615 (2015/04)
Required direct vent terminal clearances (twin pipe / concentric penetration)
Installation instructions
Fig. 11
Canadian installations
1)
U.S. installations
2)
A Clearance above grade, veranda, porch, deck or balcony 12 in. 12 in.
B Clearance to window or door that may be opened 36 in. 12 in.
C Clearance to permanently closed window * *
D Vertical clearance to ventilated soffit located above the vent
**
termination within a horizontal distance of 2 feet (61cm) from
the center line of the termination
E Clearance to unventilated soffit * *
F Clearance to outside corner * *
G Clearance to inside corner * *
H Clearance to each side of center line extended above meter/
regulator assembly
36 in. within a height 15 feet above
meter/ regulator assembly
*
I Clearance to service regulator vent outlet 36 in. *
J Clearance to non-mechanical air supply inlet to building or the
36 in. 12 in.
combustion air inlet to any other application
K Clearance to mechanical air supply inlet 72 in. 36 in. above if within 10 feet
horizontally
L Clearance above paved sidewalk or paved driveway located on
84 in.
3)
*
public property
M Clearance under veranda, porch deck or balcony 12 in.
4)
*
Table 19
1) In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code.
2) In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code.
3) A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
4) Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.
[*] For clearances not specified in ANSI Z223.1 / NFPA 54 or CSA-
B149.1, one of the following shall be indicated:
a) A minimum clearance value determined by testing in
accordance with section 2.20, or;
RTG 199 ME – 6 720 811 615 (2015/04)
b) A reference to the following footnote:
“Clearance in accordance with local installation codes and the
requirements of the gas supplier.”
15
Installation instructions
Required other than direct vent terminal clearances (single pipe penetration)
Fig. 12
Canadian installations
1)
U.S. installations
2)
A Clearance above grade, veranda, porch, deck or balcony 12 in. 12 in.
B Clearance to window or door that may be opened 36 in. 4 feet below or to side of opening;
1 foot above opening
C Clearance to permanently closed window * *
D Vertical clearance to ventilated soffit located above the vent
**
termination within a horizontal distance of 2 feet (61cm) from the
center line of the termination
E Clearance to unventilated soffit * *
F Clearance to outside corner * *
G Clearance to inside corner * *
H Clearance to each side of center line extended above meter/
regulator assembly
36 in. within a height 15 feet above
meter/ regulator assembly
*
I Clearance to service regulator vent outlet 36 in. *
J Clearance to non-mechanical air supply inlet to building or the
combustion air inlet to any other application
36 in. 4 feet below or to side of opening;
1 foot above opening
K Clearance to mechanical air supply inlet 72 in. 36 in. above if within 10 feet
horizontally
L Clearance above paved sidewalk or paved driveway located on
84 in.
3)
84 in.
public property
M Clearance under veranda, porch deck or balcony 12 in.
4)
*
Table 20
1) In accordance with the current CSA B149.1 Natural Gas and Propane Installation Code
2) In accordance with the current ANSI Z223.1 / NFPA 54 National Fuel Gas Code
3) A vent shall not terminate directly above a sidewalk or paved driveway that is located between two single family dwellings and serves both dwellings.
4) Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor.
[*] For clearances not specified in ANSI Z223.1 / NFPA 54 or CSA-B149.1, one of the following shall be indicated:
a) A minimum clearance value determined by testing in accordance with section 2.20, or;
b) A reference to the following footnote:
“Clearance in accordance with local installation codes and the requirements of the gas supplier.”
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RTG 199 ME – 6 720 811 615 (2015/04)
4.3.3 Vent configuration examples
Below are approved examples of vertical and horizontal venting
installations.
Fig. 13 Horizontal side wall venting installation (single pipe
penetration)
[1] Termination
[2] Minimum above ground or normally expected snow accumulation
level
[3] Appliance
[4] Drain tee
[5] Elbow (note: minimum 1ft of straight vent pipe required)
[6] Horizontal run ¼ " per foot down to termination
[7] Hanger strap
Installation instructions
Fig. 15 Horizontal venting system (concentric vent)
Fig. 14 Horizontal venting installation (combustion air piping not
shown)
[1] Termination
[2] Minimum above ground or normally expected snow accumulation
level
[3] Appliance
[4] Elbow (note: minimum 1ft of straight vent pipe required)
[5] Horizontal run ¼ " per foot down to termination
WARNING:
▶ Single pipe penetration should be used in non-
freezing climates only!
RTG 199 ME – 6 720 811 615 (2015/04)
Fig. 16 Horizontal parallel venting system (twin pipe direct vent)
[A] 3 ft minimum
[B] 26 ft with 3" venting
60 ft with 4" venting
Below are approved examples of vertical venting installations.
Important:
Note: Pitch horizontal runs down toward the heater, ¼ " per foot.
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