Bradford White RTG 199 HEN Installation And Operation Instructions Manual
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Bradford White RTG 199 HEN Installation And Operation Instructions Manual

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Installation and Operation instructions
INDOOR MODEL
RTG 199 HE
RTG 199 HEN - Natural Gas
RTG 199 HEX - Propane (LP Gas)
Temperature Modulated with Electronic Ignition Suitable for heating potable water and space heating
(Intended for variable flow applications)
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 assis-
tance 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 out-
lets.
• 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.

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  • Page 1 From outside the building, call the gas utility company and a trained and certified installer. RTG 199 HEN - Natural Gas RTG 199 HEX - Propane (LP Gas) Temperature Modulated with Electronic Ignition Suitable for heating potable water and space heating...

  • Page 2: Table Of Contents

    Table of contents Table of contents Key to symbols and safety instructions ....3 Troubleshooting ........42 Key to symbols .

  • Page 3: Key To Symbols And Safety Instructions

    ▶ Do not install this device in rooms with a high moisture level ▶ Immediately correct all faults to prevent system damage. (e.g. bathrooms, saunas). ▶ Use only Bradford White spare parts! Damage caused by the use of parts not supplied by Bradford White may void the warranty. Function ▶...
  • Page 4 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.
  • Page 5 Key to symbols and safety instructions For your safety WARNING: ▶ Do not store or use gasoline or other flammable, combustible or ▶ The maximum inlet gas pressure must not exceed the corrosive vapors and liquids in the vicinity of this or any other value specified by the manufacturer and the appliance.

  • Page 6: Fcc Rules

    - 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.

  • Page 7: Specifications (Technical Data)

    Appliance details Specifications (Technical data) Technical characteristics Units RTG 199 H Approved in US/Canada LP Gas Technical characteristics Units RTG 199 H Voltage Capacity Nominal V AC Maximum flow rate at a 45 °F GPM (l/min) 8.3 (31.4) Frequency (25 °C) rise Amperage Maximum flow rate at a 55 °F GPM (l/min)

  • Page 8: General Rules To Follow For Safe Operation

    Appliance details 3.3.1 The box includes ▶ Lift front cover panel upward and remove. • Tankless water heater • Bracket for wall hanging the heater • Exhaust vent adaptor (with 4 screws and gasket provided) • Combustion air inlet adaptor (with 3 screws and gasket provided) •...

  • Page 9: Dimensions And Minimum Installation Clearances

    Appliance details • 2. Carefully plan where you install the heater. Correct combustion air • 6. Keep water heater area clear and free from combustibles and supply and vent pipe installation are very important. If not installed flammable liquids. Do not locate the heater over any material which correctly, fatal accidents can occur, such as carbon monoxide might burn.

  • Page 10: Installation Instructions

    Installation instructions Installation instructions Specialized tools The following specialized tools may be required for installation: • Manometer • Multi-meter • Combustion Gas Analyzer Introduction Please follow these instructions. Failure to follow instructions may result in: ▶ Damage or injury. ▶ Improper operation. ▶...
  • Page 11 Installation instructions 4.3.1 Vent options piping (see fig. 12, fig. 19 and fig. 20, page 18) in PP, PVC, CPVC, and ABS. Generic PP twin pipe can be used if certified to ULC-S636 and only The water heater is approved with the following venting options: with 90°...
  • Page 12 Installation instructions 4.3.2 Vent specifications Maximum Maximum Maximum Elbow Establish vent clearances that comply with the vent manufacturer's allowable allowable allowable Equivalency 4" Venting specifications and all applicable national/local codes. total vent Exhaust Intake Length Length Length 90° 45° Venting specifications Twin pipe 126ft 63ft...
  • Page 13 Installation instructions For this example, the maximum allowable exhaust pipe For this example, the maximum allowable combustion length is 13 feet. air pipe length is 48 feet. Combustion air Calculation example for 2" PVC venting: Exhaust System used Concentric System used Twin pipe Number of 90°...
  • Page 14 Installation instructions Required direct vent terminal clearances (twin pipe / concentric penetration) for PVC, CPVC, ABS, and PP. Fig. 10 Canadian installations U.S. installations Clearance above grade, veranda, porch, deck or balcony 12 in. 12 in. Clearance to window or door that may be opened 36 in.
  • Page 15 Installation instructions Required other than direct vent terminal clearances (single pipe penetration) for PVC, CPVC and ABS systems. Fig. 11 Canadian installations U.S. installations Clearance above grade, veranda, porch, deck or balcony 12 in. 12 in. Clearance to window or door that may be opened 36 in.
  • Page 16 Installation instructions 4.3.3 Vent configuration examples for PP, PVC, CPVC, or ABS WARNING: systems ▶ Single pipe penetration should be used in non- Below are approved examples of vertical and horizontal venting freezing climates only and steps must be taken to installations.
  • Page 17 Installation instructions Fig. 17 Exhaust connection ▶ Attach the combustion air inlet accessory to the top of the unit fig. 18 (position 2) using the 3 screws and gasket provided, and install 3" air intake pipe over the accessory. Fig. 16 Horizontal venting system (single pipe penetration) Exhaust pipe Drain tee (when required) Intake pipe...
  • Page 18 Installation instructions Use materials approved by the authority having jurisdiction. In the absence of other authority, PVC, and CPVC pipe must comply with ASTM D1785, F441 orD2665. Cement and primer must comply with ASTM D2564 or F493. For Canada, use CSA or ULC certified PVC or CPVC pipe, fittings and cement, see table 5.
  • Page 19 Installation instructions Installation For this solution to be effective, the internal flapper must be 100% closed when the water heater is not running. Refer to Figures 23 and24 for preferred installation positions in the vent system. Installation considerations: • Install damper per the supplied manufacturer‘s instructions. •...
  • Page 20 Installation instructions 4.3.7 Common venting of 2 to 4 units 2 to 4 unit cascades can be common vented using the optional PP common venting system. The water heaters can be installed in a back to back configuration as shown in fig. 26, or side by side as shown in fig. The systems are custom configurable for vent lengths from 40”...
  • Page 21 Installation instructions 4.3.8 Fan speed adjustment necessary adjustments to fan speed values may result in improper operation of the appliance. NOTICE: IMPORTANT INFORMATION! First calculate the total equivalent vent length. This is the straight pipe ▶ Natural gas heaters with installation altitudes below length of both exhaust and combustion air plus the number of elbows 2,000 ft above sea level disregard this section.
  • Page 22 Installation instructions Liquid Liquid Natural Gas propane Natural Gas propane Minimum Minimum Maximum Maximum Altitude (above Vent Total equivalent vent power fan power fan power fan power fan sea level) terminal length speed (P2) speed (P2) speed (P1) speed (P1) 0 - 2000 ft Concentric 3.5 - 39 ft...

  • Page 23: Combustion Air Requirements

    Installation instructions ▶ Press and hold ( 5 sec.) “Program” button until the display Proceed directly to chapter 7.5 to confirm CO values flashes, then the selected value is memorized. are within range. Attention residents of the Commonwealth of Massachusetts: In the Commonwealth of Massachusetts the following regulation went 2.

  • Page 24: Proper Location For Installing Your Heater

    Installation instructions Although it is permissible to draw combustion air from the inside, it is not WARNING: the manufacturer’s recommended installation method. Always install a 3 ▶ Flammable materials, gasoline, pressurized inch 90° elbow on the top of the combustion air inlet adaptor to prevent containers, or any other items or articles that are foreign objects from falling into the unit.

  • Page 25: Mounting Installation

    Installation instructions Fig. 30 Distance between support boards Fig. 32 Mounting the heater Studs 16" (406mm) on center CAUTION: Personal injury and property damage. ▶ Appliance must be installed vertically. Mounting installation When installing this appliance the unit must be additionally secured at the bottom of the water heater as shown in fig.

  • Page 26: Gas Piping & Connections

    Installation instructions Gas piping & connections GAS LINE SIZING The gas supply piping for a single heater should be sized for a maximum Before connecting the gas supply, check the rating plate on the right side draw of 199,000 BTU/hr. Measure the length of gas supply line from the of the heater to be sure that the heater is rated for the same gas to which building's gas main to the heater and use the chapter 4.9.1 and 4.9.2, it will be connected.
  • Page 27 Installation instructions 4.9.1 Gas Line Sizing Tables for NATURAL GAS For your convenience see below for an excerpt from gas line sizing tables for a single NG appliance. For details see the current NFPA 54. Specified pipe lengths are for one RTG 199 H which has a maximum input rating of 199,000 BTUs. The gas supply system must be sized for the combined total maximum BTU/hr load requirements of all gas appliances running simultaneously.
  • Page 28 Installation instructions 4.9.2 Gas Line Sizing Tables for LP GAS For your convenience see below for an excerpt from gas line sizing tables for a single LP appliance. Their intended use of is for pipe sizing between the the 2nd stage (low pressure) regulator and the appliance. For details see the current NFPA 54 or NFPA 58. Specified pipe lengths are for one RTG 199 H which has a maximum input of 199,000.

  • Page 29: Water Connections

    Installation instructions 4.10 Water connections ▶ If the cold and hot connections to the heater are reversed, the heater will not function. Be certain there are no loose particles or dirt in the NOTICE: piping. Blow out or flush the lines before connecting to the water ▶...

  • Page 30: Filling The Condensate Trap

    Installation instructions ▶ Open the four clips and remove the combustion cover, see fig. 5, page 8. ▶ Remove the clip and disconnect the drain tube, see fig. 39. Fig. 39 Disconnect drain tube ▶ Fill the condensate trap by pouring approx.14 oz. (400ml) of water into the top of the drain tube.

  • Page 31: Domestic Hot Water Recirculation

    Bradford White tankless water heaters are approved for use in combination DHW and space heating applications (open-loop setup). These water heaters are not approved for use in space heating only applications (closed-loop setup).
  • Page 32 Installation instructions Fig. 44 Pressure drop curve Fig. 45 Space heating diagram Hot water outlet [11] Thermostatic mixing valve Cold water inlet [12] Thermometer (optional) Pressure relief valve [13] DHW outlet Gas supply [14] Water to water heat exchanger Shut off gas valve [17] Thermostat Thermal expansion tank (as required) [18] Space heating zone...

  • Page 33: Measuring Gas Pressure

    Electrical connections 4.15 Measuring gas pressure ▶ Turn on high volume of hot water flow (at least 6 gpm, 1 tub and 2 sinks should be sufficient) and burner will light. If heater display Confirm gas pressure upon installation. reverts to P2, open more hot water fixtures to allow sufficient flow. Connecting manometer Press until P1 reappears on the display.

  • Page 34: Position Of The Fuses In Control Unit

    Operation instructions ▶ Remove the six screws from the back cover of the control unit, see fig. 50, pos. 2. ▶ Check the fuses in the printed circuit board, see fig. 50, pos. 3. Fig. 48 Connecting power supply cord Power cord length: 3ft.

  • Page 35: For Your Safety Read Before Operating Your Water Heater

    Operation instructions Fig. 53 Temperature indicator Fig. 59 Activation water flow (see chapter 12) For your safety read before operating your water heater DANGER: Explosion hazard! ▶ If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

  • Page 36: Operation

    Operation instructions ▶ Press buttons in order to reach desired temperature. 6720608920-12. 1 AL Fig. 61 Setting the water temperature The desired temperature of the hot water can be adjusted on the front control panel of the heater. The water heater has an electronically controlled gas valve that modulates the burner input in response to both varying hot water flow rates and/or changes in any incoming and outgoing water temperatures.

  • Page 37: Program Button

    Maintenance and service NOTICE: ▶ Inspect and clean the complete water heating system once a year. ▶ Carry out a maintenance as necessary. Immediately repair all faults to avoid damage to the system. Annual maintenance table Every year Inspect venting system 6720608920-15.

  • Page 38: Winterizing For Seasonal Use

    Maintenance and service Winterizing for seasonal use ▶ Position a container below the hot water outlet and connect cold water supply. Open cold water supply shutoff valve and flush heat The water heater must not be installed in a location where it may be exchanger with clean water.

  • Page 39: Adjusting Co2

    Maintenance and service ▶ Dismantle all parts for inspection and cleaning. ▶ Insert CO analyzer probe into the measuring port. The tip of the probe should be in the center of the flue pipe (approx 1.5" inserted). Avoid air gaps between probe and measuring port as they can alter readings.

  • Page 40: Program Values

    Maintenance and service Max. CO level range (%) (measured) Nat. Gas max. input 7.8 % - 8.4 % < 250 ppm min. input 1.5 % - 1.8 % < 60 ppm LP Gas max. input 9.5 % - 10.1 % <...

  • Page 41: Control Board Diagnostics

    Maintenance and service Program Description Factory Default Comment By-pass calibration Contact manufacturer for details. Maximum Power NG: 51, NG: 53, see chapter 4.15, page 33 LP: 52 LP: 53 note: reducing P1 values below maximum will reduce maximum power of the appliance. Minimum Power NG: 10, NG: 8,...

  • Page 42: Troubleshooting

    Troubleshooting Example: Calculation of number of working hours, Diagnostic menu 10th most recent error Working hours Appliance type - Cd (Condensing) Number in H0 60 + Appliance type - nC (Non condensing) Number in H1 5 (X 100) = 500 + Appliance power - 175 / 199 (kBTU/hr) Number in H2 0 (X 10 000) =...

  • Page 43: Water Is Too Hot

    Troubleshooting 7. Check for plumbing crossover. A crossover in the hot and cold Low water flow/pressure plumbing pipes creates back pressure on the water flowing through 1. Too many hot water applications are being used simultaneously or the heater. Therefore, a higher flow rate than normal is needed to too much flow is demanded.

  • Page 44: Noisy Burner/Heater During Operation

    Problem solving Noisy burner/heater during operation 4. Cross contamination. Ensure that intake and exhaust terminations maintain required clearances as stated in chapter 4.3, page 10. 1. Sealed combustion leak. Make sure combustion cover is securely Cross contamination between intake and exhaust may cause fastened.
  • Page 45 Problem solving Display Cause Solution Primary fan rotation too low in 1. Disconnect power supply cord and check wire connection on back side of fan and operation. the connectors on the control board. 2. Check supply voltage. It must be 120VAC and properly grounded. 3.
  • Page 46 Problem solving Display Cause Solution No flame ionization detected with 1. Verify that all manual gas shut off valves are open. water flow. 2. Check gas type. See fig. 2, page 7. 3. Reset error code and open a water tap to cycle the heater in an effort to purge air. Cycling hot water tap on and off multiple times may be necessary.
  • Page 47 Problem solving Display Cause Solution Gas Control error 1. Check Gas Valve cable harness (connection to gas valve and to ECU) 2. Check Gas Valve (Replace if necessary) 3. Replace ECU (Electronic Control Unit) Ionization error at standby. 1. Loose connection to the flame ionization rod. Verify that the thinner wire leading from the control unit is securely connected to the set of electrodes located on the lower front of the heat exchanger.

  • Page 48: Electrical Diagram

    Electrical diagram Electrical diagram Fig. 75 Electrical scheme Inlet water temperature sensor Outlet water temperature sensor Backflow temperature sensor By-pass water valve Cascading output connection Cascading input connection Ionization sensor Water flow sensor Flue gas limiter [10] Heat exchanger overheat sensor (ECO) [11] Gas valve [12] Temperature Heat Exchanger [13] Exhaust temperature sensor...

  • Page 49: Sensor Resistance Charts

    Sensor resistance charts Sensor resistance charts Fig. 76 Outlet / Inlet and HE immersion sensor characteristics Fig. 77 RTG 199 HE – 6 720 811 617 (2016/01)

  • Page 50: Functional Scheme

    Functional scheme Functional scheme Fig. 78 Functional scheme RTG 199 HE – 6 720 811 617 (2016/01)

  • Page 51: Interior Components Diagram

    Interior components diagram Interior components diagram 13.1 Interior components Fig. 79 Components Exhaust temperature sensor [13] Ignition electrodes Flue gas collector [14] Observation window Heat exchanger [15] Backflow temperature sensor Ionization sensor [16] Secondary air fan Primary fan (Mixer) [17] Gas valve Hot water temperature sensor [18] Condensate trap LCD display...

  • Page 52: Protecting The Environment

    Protecting the environment Protecting the environment Packing The packing box may be fully recycled as confirmed by the recycling symbol Components Many parts in the heater can be fully recycled in the end of the product life. Contact your city authorities for information about the disposal of recyclable products.

  • Page 53: Limited Tankless Heater Warranty

    Defective installation, reinstallation at another costs. Any product used for other than a single location, installation by other than a Bradford White family housing unit application will be warranted Certified Installer and specifically, any installation...
  • Page 54 HOW DO YOU GET WARRANTY ASSISTANCE? Upon discovering a defect or problem, you should: 1. Contact either the Bradford White Certified Installer or dealer, or 2. Contact us-- BRADFORD WHITE CORPORATION...

  • Page 55: Installation

    Installer Checklist to be completed by installer upon installation Installer Checklist to be completed by installer upon installation Serial Number ___ ___ ___ ___ ___ ___ ___ ___ (8 digit serial number is located on rating plate on right side panel) Gas Pressure Reading Static...

This manual is also suitable for:

Rtg 199 hex

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