C O N D E N S I N G T A N K L E S S G A S W A T E R H E A T E R
RTGS199N1 / RTGS199X1RTGR199N1 / RTGR199X1• Natural Gas(NG) / Propane Gas (LP)
Installation and Operation Instructions for
Models
Follow each appliance’s instructions precisely.
Installation and service must be performed by a trained and certified installer, service agency orthe gas supplier.
Application drawings in this manual are conceptual only and do not purport to address all design,installation, code, or safety considerations.
The diagrams in this manual are for reference use by code officials, designers and licensedinstallers. It is expected that installers have adequate knowledge of national and local codes, aswell as accepted industry practices, and are trained on equipment, procedures, and applicationsinvolved. Drawings are not to scale.
Refer to the appliance and accessory installation manuals for additional detailed information.
WARNING
2 Rev.09152022
TABLE OF CONTENTS
SECTION 1 Safety Regulations ................................................................................................................... 31.1 Safety Symbols.......................................................................................................................... 3
1.2 Safety........................................................................................................................................................... 3
SECTION 2 Introduction ............................................................................................................................... 4
SECTION 3 Water Heater Sizing and Specifications .............................................................................. 53.1 Sizing for specific application or loads................................................................................................... 5
3.2 Water heater Accessories........................................................................................................................ 6
3.3 Specifications............................................................................................................................................ 7
3.4 Dimensions................................................................................................................................................ 8
3.5 Components............................................................................................................................................ 10
3.5 Water Heater Sizing................................................................................................................................. 12
SECTION 4 Single-Unit Applications.............................................................................................. 13 4.1 Water Heater Mode (RTGR199N1, RTGR199X1) ................................................................... 13
4.2 Water Heater Mode (RTGS199N1, RTGS199X1) ................................................................... 17
SECTION 5 Multi-Unit Applications(Cascade).......................................................................................... 245.1 Water Heater Mode(RTGR199N1, RTGR199X1)............................................................................... 24
5.2 Water Heater Mode(RTGS199N1, RTGS199X1)......................................................................... 25
3
SECTION 1 Safety Regulations 1.1 Safety Symbols
Warnings in this document are identified by a warning triangle printed against a greybackground. Keywords at the start of a warning indicate the type and seriousness of theensuing risk if measures to prevent the risk are not taken.
These instructions are intended as an aid to professional service personnel for properinstallation, adjustment and operation of this unit. Read all instructions prior toattempting installation or operation. Failure to comply with instructions can result inimproper installation, adjustment, and possibly result in fire, electrical shock, propertydamage, personal injury or death.
Disconnect all power to the unit before starting any service or maintenance. Failure todo so could cause severe electrical shock resulting in personal injury or death.
For safety symbols, ‘DANGER’, ‘WARNING’, CAUTION’ are indicated and the definitions for these terms are as follow:
DANGERIndicates an imminently hazardous situation which, if not avoided, will result in death or seriousinjury. This signal word is limited to the most extreme situations.
WARNING
Indicates a potentially hazardous situation which, if not avoided, could result in death or seriousinjury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderateinjury. It is also used to alert against unsafe practices and hazards involving only propertydamage.
WARNING
WARNING
WARNING
1.2 SafetyPLEASE READ SAFETY PRECAUTIONS BEFORE INSTALLATION.
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NOTICE
NOTICE
SECTION 2 Introduction
This Manual is used to present some of the most common applications for the appliance.Drawings are shown with both piping and corresponding electrical connections where applicable.Field supplied equipment shown in this manual does not represent any one manufacturer or specificmodel. This manual does not cover all potential installation practices and piping techniquespossible when installing water heating appliances. It is the responsibility of the professionalinstaller to determine the best solution for the application, as well as abide by local buildingcodes.
This manual covers the most common system application however it is not the intention of thismanual to cover all potential applications as possibilities are nearly endless. If an application isnot covered within this manual and questions surrounding best practices arise please contact themanufacturer with specific application needs.
This manual is not to be used in place of the installation and operation manuals included with theappliance. For a copy of the applicable Installation and operation materials a copy can bedownloaded from the manufacturer's website. All manuals/specifications are subject to change.
In this manual concept drawings are used to show common applications, and do not coverall safety, design, or installation considerations. Additional safety and/or auxiliaryequipment may be needed. Reference concept drawings are for use by officials,designers and professional installers. Installers must have adequate knowledge of bestindustry practices, procedures, and applications involved. It is the responsibility of theprofessional installer to ensure that the installation abides with local building codes.
Installation must conform with local codes or, in the absence of local codes, the NationalFuel Gas Code ANSI Z223.1/NFPA 54.
In Canada: Installation must conform with CGA B149.(1,2) INSTALLATION CODES and/or local installation codes.
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(example: 20 seconds to fill 1 gallon container = 3 GPM)the fill time and the container volume and the equation below calculate peak flow rate.
• To determine flow rate determine the length of time required to fill a known volume. Using
demanded flow. Determine the flow rate of each of these fixtures and total them.• Determine which fixtures will be used simultaneously. The total flow rate is the peak
Determining Peak Demand Flow:count method.inlettemperature. If inlet temperature and setpoint cannot be determined, refer to the fixtureper minute being demanded. the Rise is the difference between the demanded set point and theThe peak demand is the product of the Flow rate and Rise. Flow rate is the number of gallons
Peak Demand Sizing by Flow rate x Rise
3.1 Sizing for specific application or loads
Download manuals at www.bradfordwhite.com
and model. More detailed information is contained in the installation manuals.Bradford White Corporation and provides a general overview to the specification sheetsThis section describes sizing rules for the RTGS and RTGR series water heaters from
SECTION 3 Water Heater Sizing and Specifications
• Peak BTU demand = 500 * 62(°F) * 5(GPM) = 155,000 BTU / hr.• Supply is 58°F and Setpoint is 120°F, 120°F - 58°F = 62°F• Peak Flow is two showers and one sink, 2+2+1 = 5 GPM.
Example Peak BTU Demand Calculation:
page for general ground water temperatures.is 62°F. If supply water temperature cannot be measured refer to the chart on the nextcold water temperature. For example if inlet water is 58°F and setpoint is 120°F the risefrom the cold water line. Rise is the difference between the demanded setpoint and this
• Using a thermometer run a cold water fixture until the room temperature water is purged
Determining Rise:
• Total all simultaneous flow rates for peak demand flow.• Each Bath/Garden tub will flow 3.5-4.5 GPM• Each Shower will flow ~ 2 GPM.• Each Sink will flow ~1 GPM.
Counting Fixtures to determine Peak Demand Flow:
6
| Infiniti™ K 160-1996 Application Manual
Data subject to change 10.2018 | Bradford White Water Heaters
3 WATER HEATER SIZING AND SPECIFICATIONS
RULE OF THUMB SIZING
The tables below provide a general rule of thumb when sizing formost residential applications. For commercial applications or for amore detailed sizing method, use the Sizing by Chart instructionsbelow in conjunction with the charts on the next page.
SIZING BY CHART
• Measure the flow rates at each fixture that will be usedsimultaneously and add them together. If only oneapplication will be used at a time measure each fixture anduse the maximum flow rate observed.
• Using a known volume container, record several fill times.Perform the calculation below to determine the flow rate (aone gallon fill time of 30 seconds is 2.0 gallons per minute(GPM):
3.1 SIZING TANKLESS WATER HEATERS
This section describes the Infiniti® K water heaters from BradfordWhite Corporation and provides a general overview to thespecification sheets and model. More detailed information iscontained in the installation manuals.
Download manuals at www.bradfordwhite.com.
Flow rate (GPM) =Volume (gallons)
Fill time (sec)
sec
minx 60
• Using a thermometer, measure the incoming watertemperature. For reference, see average ground watertemperature map. Subtract this temperature from thedesired hot water temperature to get the degree rise. Ifthe desired hot water temperature is 120F and incomingtemperature is 55F, the desired degree rise is 65F.
EXAMPLE
• Required flow rate of 2.0 GPM at a 65˚F rise.
• Refer to the graphs on page 10.
See Table 1 for multiple fixture possibilities and hot water flowrates at given inlet water temperatures with a water heater setpoint temperature of 120°F.
CA
OR
WA
ID
NV
MT
WY
UT
AZNM
CO
ND
SD
NE
TX
OK
KS
MN
IA
MO
AR
LA
MI
INIL
WI
GA
AL
MS
TN
KY
WV VA
NC
SC
FL
NHVT
NY
PA
OH
NJ
RICT
MA
ME
MD
DE˚F
77˚
72˚
67˚
62˚
57˚
52˚
47˚
42˚
37˚
Figure 1 Average ground water temperaturesi re 1: r round water temperatures
| Infiniti® K 160-199 Application Manual
Data subject to change 10.2019 | Bradford White Water Heaters
6
Figure 1: Average ground water temperatures
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3.3 Specifications
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Model Name RTGR199N1 / RTGR199X1 RTGS199N1 / RTGS199X1
Gas Input RateMAX 199,000 Btu/hMIN 18,000 Btu/h
High Elevation 180,000 Btu/h
Hot Water Capacity35°F Rise 11.1 Gal/min (42 L/min)45°F Rise 8.7 Gal/min (32.9 L/min)77°F Rise 5.1 Gal/min (19.3 (L/min)
Installation Indoor / Outdoor Wall Hung (with outdoor vent cap)Flue System Sealed Combustion Direct Vent, Single Vent, Outdoor
Max Vent Run 2” (60ft) / 3” (150ft) Schedule 40 PVC, CPVC, PP
Orifice SizeNG (Gas / Needle) 0.330” (8.4mm) / 0.342” (8.7mm)LP (Gas / Needle) 0.259” (6.6mm) / 0.263” (6.7mm)
Gas Supply PressureNG 3.5” WC to 10.5” WCLP 8.0” WC to 14” WC
Manifold Pressure
Gas Type NG LP
Low Fire2″ VENT 0.1˝ WC -0.05˝ WC3″ VENT 0.1˝ WC -0.05˝ WC
High Fire2″ VENT -0.20˝ WC -0.30˝ WC3″ VENT -0.20˝ WC -0.30˝ WC
Power SupplyMain Supply 120V 60HzMax Current Less than 2A
Power ConsumptionStandby 2.7W
Operation 74W / 188W with external pumpAnti Freeze 53W
Ignition System Direct Electronic Ignition / Automatic Flame SensingBurner System Premixed Metal Fiber Burner
Gas Valve System Air Ratio ValveMinimum Flow Activation Flow 0.5 GPM
Internal Pipe Material STS 304, Stainless Steel with PPSDimensions W 17.3″ – H 27.6″ – D 14.9″
Weight 85 lbs(38.5 kgs)Water Holding Capacity Under 2 Gallons
Control Panel / Circuit Board PR-922C / NGTH-9600C
Water PressureMAX 150 psiMIN 15 psi
MaterialsCasing Cold Rolled Carbon Steel
Heat Exchanger Heat Exchanger : SS 304
Safety Devices Flame Sensor, Overheat Cut Off Switch , Gas Leak Detector, Water LeakDetector, Exhaust Temperature Sensor, Water Temperature Sensor
• TemperatureOperating ambient Temperature Range : Range: 14°F to 140°F (-10 to 60°C).Operating Relative Humidity up to: 90% at 104°F (40°C).Shipping & Storage Temperature Range of : -4°F to 176°F (-20 to 80°C).
188W with Internal Pump117W
2.7W
78 lbs(35.5 kgs)
PR-952C / NGTH-9600C
8
▪ Dimensions: RTGR199N1 / RTGR199X1
27.6"
[700
mm
]
4.0" [
101m
m]
6.9" [175mm]
4.6" [117mm]5.8" [148mm]
5.7" [
146m
m]
14.9"
[378
mm
]
2.5" [
64m
m]
2.4" [62mm]
3.2" [81mm]
6.4" [163mm]
17.3" [440mm]
8.9" [226mm]
A
CD
I
E
H
F
G
B
Description Size
A Exhaust 2" PVC
B Air Intake 2" PVC
C Hot Water 3/4" NPT
D Condensate 1/2" NPT
E Recirculation Return Connection 3/4" NPT
F Cold Water Connection 3/4" NPT
G Gas 3/4" NPT
H Cold Water Filter -
I Recirculation Return Filter -
3.4 Dimensions
Rev.09152022
9
27.6"
[700
mm
]
4.0" [
101m
m]
6.9" [175mm]
4.6" [117mm]5.8" [148mm]
14.9"
[378
mm
]
4.3" [
109m
m]
2.9" [75mm]
8.2" [208mm]
17.3" [440mm]2.5" [65mm]6.1" [155mm]
A
C
D
E F
G
B
Description Size
A Exhaust 2" PVC
B Air Intake 2" PVC
C Gas 3/4" NPT
D Condensate 1/2" NPT
E Hot Water Connection 3/4" NPT
F Cold Water Connection 3/4" NPT
G Cold Water Filter -
▪ Dimensions: RTGS199N1 / RTGS199X1
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# Name of Component
1 Vent Pipe Collar
2 Combustion Air Intake Assembly
3 Ignition Transformer
4 Igniter
5 Flame Detection Sensor
6 High Limit Switch
7 Sight Glass
8 Terminal Port
9 Circulation Water Pump
10 Mixing Valve
11 Water Leak Detector
12 Domestic Hot Water (DHW) Outlet
13 Condensate Trap Cleanout
14 Recirculation Return Water Connector
# Name of Component
15 Cold Water Inlet
16 Gas Inlet
17 Main Controller
18 Water Adjustment Valve
19 Control Panel
20 Manual Power Switch
21 Secondary Heat Exchanger
22 Primary Heat Exchanger
23 Gas Valve
24 Air Gas Mixture (AGM) Actuator
25 Blower
26 Air Intake Filter
27 Air Intake Collar
1
2
3
4
5
6
8
9
10
1117
18
20
21
22
23
25
27
26
24
19
12 13 14 15 16
7
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▪ Name of Components: RTGS199N1 / RTGS199X13.5 Components
11
▪ Name of Components: RTGS199N1 / RTGS199X1
# Name of Component
1 Vent Pipe Collar
2 Combustion Air Intake Assembly
3 Ignition Transformer
4 Igniter
5 Flame Detection Sensor
6 High Limit Switch
7 Sight Glass
8 Terminal Port
9 Water Mixing Valve
10 Main Controller
11 Water Leak Detector
12 Gas Inlet
13 Domestic Hot Water (DHW) Outlet
14 Condensate Trap Cleanout
# Name of Component
15 Cold Water Inlet
16 Cold Water Filter
17 Condensate Trap
18 Water Adjustment Valve
19 Control Panel
20 Manual Power Switch
21 Secondary Heat Exchanger
22 Primary Heat Exchanger
23 Gas Valve
24 Air Gas Mixture (AGM) Actuator
25 Blower
26 Air Intake Filter
27 Air Intake Collar
1
2
3
4
5
6
8
9
10
1117
18
20
21
22
23
25
27
26
24
19
12 13 14 15 16
7
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12Rev.09152022
Pressure Drop of Appliance
0 0.5 1 1.5 2 2.5 3 3.5
M
Minimum Recirculation Flow Recommended by the Manufacturer : 1 GPM
10
20
30
40
50
60
70
80
0 1 2 3 4 5 6 7 8 9 10 11
RTGS199N1 / RTGS199X1, RTGR199N1 / RTGR199X1
Pressure Curve of Internal Pump(if applicable)
3.6 Water Heater SizingP
ress
ure
Loss
[psi
]H
ead
Pres
sure
[ft-h
d ]
Flow Rate[GPM]
Flow Rate[GPM]
Equivalent Power Pumps to RTGR Internal pump:-Taco 008-Grundfos UP15-55
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Mode Description
Setting Requirement Performance
11:RC DedicatedReturn Line Accessory
Wait TimeWater
Savings
EnergySavings
Hot WaterTemperature
No RecirculationRecirculation Pump remainsIdle. OFF No - - - -
Itnl Hot water circulates within theappliance, No return line needed. Itnl No - Better Better Better
Etnl Hot water circulates within thehouse using external return line. Etnl Yes - Best Better Best
tt24title 24
External recirculation whendemand button is pressed. tt24 Yes O Better Best Best
Crossover ValveHot water circulates within thehouse using 3rd party bypass valve. CrOS No O Best Good Warm
1. Only POTABLE water may be plumbed through the water heater.2. The water heater cannot be used for space heating application3. Expansion tank is required if a backflow preventer is installed
SECTION 4 Single Unit Applications4.1 Water Heater Modes (RTGR199N1, RTGR199X1)Applications shown in this section are for single appliances. If cascading is required refer to Section 5 Multiple UnitInstallations.
oFF
Internal
External
CrOS
* Recirculation is activated by Timer [Auto / Manual]
Recirculation timer setting can be changed by customer's own desire time.Auto (self learning mode) function can be selected by customer's need.
No Recirculation Mode, Internal Recirculation Mode
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· Provides most comfortable option. Maintains consistent hot water availability during specified times· Timer can be manually customized or programmed to automatically learn daily usage patterns.· Ability to optimize by using Installer Mode function 3: RT to adjust loop temperature for maximum comfort and
safety.
Recirculation Mode [ External Mode]
DedicatedReturn Line Accessory
Setting11 : RC
YES -
Maximum Loop LengthControlled by
3/4"1/2"Timer500' (150m)200' (60m)
The recirculation return pipe must be installed in the field in order to apply the ‘External Mode’.This mode allows the hot water pipes to be warmed up and also serves as the freeze protection function.
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ENTL
15
Recirculation Mode
DedicatedReturn Line Accessory
Setting11 : RC
YESSurface
TemperatureSensor
tt24
Maximum Loop LengthControlled by
3/4"1/2"
Push Button Switch500' (150m)200' (60m)
Rev.09152022
· Do not repeatedly press on-demand button. Title 24 function will not operate again until the water at the return is cool.·Note: pump will eventually stop after a maximum run time of 5 minutes if return temperature of 102°F is not met.
· Pump will stop operating once hot water has successfully reached 102°F at the installed temperature sensor.· Circulation pump will start on-demand to purge cold water from the water lines and replace with hot water.· Built-in timer function is disabled.· Recirculation will only operate after the push button switch is pressed. Hot water will not be available immediately.· Designed to meet California Title 24 requirements.· Provides best energy savings option with recirculation.
[ On Demand(tt24) Mode]
16
· Provides recirculation option for homes without a dedicated return line by utilizing the cold water line as a return line.· Timer can be manually customized or programmed to automatically learn daily usage patterns.· In order to prevent hot water from being supplied into the cold water line, the thermal element in thecrossover valve will close at about 95°F. As a result, hot water may not be available at all times (only warm water).
DedicatedReturn Line Accessory
Setting11 : RC
NO Crossover Valve CrOS
Maximum Loop LengthControlled by
1/2" 3/4"
200' (60m) 500' (150m) Timer
Recirculation Mode
[ Crossover(CrOS) Mode]
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17
Mode DescriptionSetting Requirement Performance
11:RC DedicatedReturn Line Accessory
Wait TimeWater
SavingsEnergySavings
Hot WaterTemperature
No Recirculation Heat water as draws occur, norecirculation occurs OFF No - - - -
Pulse* Unit controls an External pumpwith a dedicated return PuLS No - Best Better Best
TT24*(Title24)
Only operates recirculation line witha push of a button. tt24 No O Better Best Warm
On Demand* Only operates recirculation line witha push of a button. OndE No O Better Good Best
No Recirculation Mode
4.2 Water Heater Mode (RTGS199N1, RTGS199X1)
*Models not equipt with a built-in pump will require a field supplied circulator to be installed for use with recirculation modes, See section3.6 Water Heater Sizing for pressure curves for circulator sizing.
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18
Pulse Mode
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19
On Demand Mode
Rev.09152022
Air Handler Standard Mode
Mode DescriptionSetting Requirements Performance
12:Ah DedicatedReturn Line Accessory
Standard Air Handler Pairs with Air handler forspace heat. Std Yes Thermostatic
Mixing valve
Eco Air Handler Incorporates DHW priority switchand anti-legionella function ECO Yes Thermostatic mixing valve,
DHW priority switch
EnergySavings
Good
Better
20Rev.09152022
21
Air Handler Eco Mode
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bacteria in the heating pipe.3.No usage during Anti OFF setting time, it can operate arbitrarily during the Anti on time for preventingwater temperature during shower2. It prevents simultaneous operation of DHW and hea
