Rheem Commercial Tankless System · 2 | Rheem® Commercial Gas Tankless Water Heater Systems MODEL...

Water INTEGRATED HOME COMFORTCommercial GasTankless Water Heater Systems

PRINTED IN U.S.A. 12/17 WP FORM NO. TK-RR220

INTEGRATED HOME COMFORTINTEGRATED HOME COMFORT

This custom-built tankless solution arrives on the jobsite factory-assembled with single point connections including • RTGH-CM95 Condensing Tankless Water Heaters• Factory installed system control manifold• Pre-sized water and gas manifold• Electrical wiring• Condensate lines

Configurations • Wall mounted system• Wall hung system• Free-standing system

System Options• 2-6 tankless units per system

Engineered Solution by Rheem • Scalable from 11,000 BTU/h to 1,194,000 BTU/h in one system• Multiple configurations• Options for future expansion

Installation Savings• Reduce installation costs with single point connections

Industry Best Solutions• Minimum side to side clearances = 1/2 inch (to combustibles)• Minimum fow rate = 0.26 GPM • Minimum activation rate = 0.40 GPM• UL-1738 & ULC-S636 certification on PPs venting accessories

Redundancy• Modular system allows Isolation to reduce downtime

Warranty• 5-Year heat exchanger, 5-years parts, 1-year rack parts and

1-year labor warranty*

*See Commercial Warranty Certificate for complete information

RTR Part Numbers and Layouts......................... 2-3

2 Unit Wall Hanging Frame ................................. 4-5

3 Unit Wall Hanging Frame ................................. 6-7

2 Unit Wall Mount Frame .................................... 8-9

3 Unit Wall Mount Frame ................................ 10-11

4 Unit Free Standing Frame ........................... 12-13

6 Unit Free Standing Frame ........................... 14-15

Rheem Commercial Condensing Tankless ..................................... 16-17

Common Venting for Rheem Commercial Condensing Tankless ................. 18-19

Back to Back Common Venting ..................... 20-21

Inline Common Venting .................................. 22-23

Technical Info ...................................................... 24

COMMERCIAL

COMMERCIAL

COMMERCIAL

TABLE OF CONTENTS

Rheem® Commercial Tankless System

RTR PART NUMBERS AND LAYOUTS

System:

RTR = Rheem Tankless Rack

Configuration:

FS = Free Standing

WM = Wall Mount

WH = Wall Hanging

Venting:

DV = Direct Vent / Indoor

X = Outdoor

Emissions:

L = Low NOx

Gas Type:

P = Propane

N = Natural Gas

Units on rack (max tankless for configuration, units on front, units on back)

First Digit = 2, 3, 4, 6 = Max possible units for configuration

Second Digit = 1, 2, 3 = Actual units on front

Third Digit = 0, 1, 2, 3 = Actual units on back

2 | Rheem® Commercial Gas Tankless Water Heater Systems

MODEL NUMBER

NUMBER OF UNITS

SYSTEMDESCRIPTION

FUEL TYPE LAYOUT

RTR-WH220DVLN 2-Units Indoor Wall Hanging Nat. Gas

RTR-WH220XLN 2-Units Outdoor Wall Hanging Nat. Gas

RTR-WH220DVLP 2-Units Indoor Wall hanging LP Gas

RTR-WH220XLP 2-Units Outdoor Wall Hanging LP Gas

RTR-WH330DVLN 3-Units Indoor Wall Hanging Nat. Gas

RTR-WH330XLN 3-Units Outdoor Wall Hanging Nat. Gas

RTR-WH330DVLP 3-Units Indoor Wall Hanging LP Gas

RTR-WH330XLP 3-Units Outdoor Wall Hanging LP Gas

MODEL NUMBER

NUMBER OF UNITS

SYSTEMDESCRIPTION

FUEL TYPE LAYOUT

RTR-WM220DVLN 2-Units Indoor Wall Mount Nat. Gas

RTR-WM220XLN 2-Units Outdoor Wall Mount Nat. Gas

RTR-WM220DVLP 2-Units Indoor Wall Mount LP Gas

RTR-WM220XLP 2-Units outdoor wall mount LP Gas

RTR-WM330DVLN 3-Units Indoor Wall Mount Nat. Gas

RTR-WM330XLN 3-Units Outdoor Wall Mount Nat. Gas

RTR-WM330DVLP 3-Units Indoor Wall Mount LP Gas

RTR-WM330XLP 3-Units Outdoor Wall Mount LP Gas

Wall Hanging Tankless System

Wall Mount Tankless System

See Pages 4-5

See Pages 8-9

See Pages 6-7

See Pages 10-11

Commercial Tankless System Model Numbers Explained

R T R - W M 3 3 0 X L P

MODEL NUMBER

NUMBER OF UNITS

SYSTEMDESCRIPTION

FUEL TYPE LAYOUT

RTR-FS411DVLN 2-Units Indoor Free Standing Nat. Gas

RTR-FS411XLN 2-Units Outdoor Free Standing Nat. Gas

RTR-FS411XVLP 2-Units Outdoor Free Standing LP Gas



RTR-FS420XLP 2-Units Outdoor Free Standing LP Gas
















Freestanding Tankless Rack System

3

RTR PART NUMBERS AND LAYOUTS

See Pages 12-13

See Pages 12-13

See Pages 12-13

See Pages 12-13

See Pages 14-15

See Pages 14-15

See Pages 14-15

Left BackFront

MODEL LAYOUT ILLUSTRATION

RTR-WH2

Bottom

54.30”

45.38”

33.63”

11.50”

20.50”5.50”

11.00” (Hot)

15.38” (Condensate)

7.00” (Cold)

3.63” (Gas)

8.00”

21.31” (Electrical Box)


Dimensions

2 UNIT WALL HANGING FRAME

5

SpecificationsMODEL RTR-WH2*

Water Heater Model RTGH-CM95DVLN, RTGH-CM95DVLP | RTGH-CM95XLN,RTGH-CM95XLP (Indoor NG/LP) (Outdoor NG/LP)

Crate Dimensions (HxLxD) - Inches 21 X 53 X 65

Weight - Fully Assembled - Lbs. 220

Weight - Shipping (Total) - Lbs.. 320

Rack Frame

Frame Material 16 Gauge Galvanized Steel

Frame Finish Powder Coat

Color Gray

Water, Gas amd Condensate Connections

Hot Water Trunk Line Diameter 2 - 1/2"

Cold Water Trunk Line Diameter 2 - 1/2"

Hot Water Trunk Line Material Rigid Copper

Cold Water Trunk Line Material Rigid Copper

Water Trunk Connection Type 2 - 1/2" Pipe

Gas Trunk Line Diameter 1-1/2"

Gas Trunk Connection Type 1-1/2" MNPT

Gas Trunk Line Material Sch 40 Steel

Gas Branch Line Material Sch 40 Steel

Condensate Trunk Line Diameter 3/4"

Condensate Trunk Line Material Sch-40 PVC

Condensate Trunk Connection Type 3/4" Pipe

Electrical

Voltage 120V AC / 60Hz

Maximum Current (Amperes) 8

Controller UMC-117

Controller Cable 18 AWG

BTU and Flow Rates

Number of Tankless Water Heaters 2

Flow Rate @ 70°F Rise (GPM) 10.7

Flow Rate@ 100°F rise (GPM) 7.5

Minimum Input Rate (BTU/h) 11,000

Maximum Input Rate (BTU/h) 399,800

*Refer to page 2 for Part Number



Left BackFront

Bottom


RTR-WH3

8.00”

54.25”

11.50”

11.00”(Hot)

7.00”(Cold)

3.63”(Gas)

65.57”20.50”

5.50”

54.30”


21.31” (Electrical Box)

Dimensions


7

MODEL RTW-WH3*




Weight - Shipping (Total) - Lbs. 430

Rack Frame



Color Gray

Water, Gas and Condensate Connections













Electrical

Voltage 120V AC / 60Hz


Controller UMC-117


BTU and Flow Rates


Flow Rate @ 70°F Rise (GPM) 16.1

Flow Rate@ 100°F rise (GPM) 11.3




Specifications




RTR-WM2

Left BackFront

Bottom

11.63”41.50”

20.50”5.50”

4.50”(Gas)

54.30”

31.70”

14.25” 15.00”

8.38”(Cold)

12.75”(Hot)


20.75”(Electrical Box)

Dimensions

2 UNIT WALL MOUNT FRAME

9

MODEL RTR-WM2*


Crate Dimensions (HxLxD) - Inches 64 x 53 x 30



Rack Frame - Specifications



Color Gray














Electrical

Voltage 120V AC / 60 Hz


Controller UMC-117


BTU and Flow Rates


Flow Rate@ 70°F Rise (GPM) 10.7





Specifications




RTR-WM3

Left BackFront

Bottom

11.63”61.25”

20.42” 20.42”

52.30”

15.00”

20.50”

5.50”

54.30”

4.50” (Gas) (Electrical Box) (Electrical Box)8.38” (Cold)

12.75” (Hot)


Dimensions


11

MODEL RTR-WM3*








Color Gray

Water, Gas, and Condensate Connections













Electric Requirements

Voltage AC 120 Volts-60 Hz


Controller UMC-117


BTU and Flow Rates







Specifications



Left Front


RTR-FS422

RTR-FS412

RTR-FS420

RTR-FS411

Inline(facing samedirection)

Back to Back

Bottom

11.88”

4.50” (Gas)

8.38” (Cold)

12.75” (Hot)

41.50”

31.70”

54.30”

25.00” 23.30”

5.50”20.50”


20.75”(Electrical Box)

Dimensions

4 UNIT FREE STANDING FRAME

13

MODEL RTR-FS422* RTR-FS412* RTR-FS420* RTR-FS411*



Weight - Fully Assembled - Lbs. 420 330 240 240

Weight - Shipping (Total) - Lbs. 530 440 350 350




Color Gray








Gas Trunk Connection Type 1-1/2” MNPT




Condensate Trunk Material Sch-40 PVC


Electric

Voltage 120V AC/60 Hz

Maximum Current (Amperes) 16 12 N/A

Controller UMC-117


BTU and Flow Rates

Number of Tankless Water Heaters 4 3 2

Flow Rate @ 70°F Rise (GPM) 21.5 16.1 10.7



Maximum Input Rate (BTU/h) 799,600 599,700 399,800


Specifications




RTR-FS633

RTR-FS623

RTR-FS630

Left Front

Bottom

11.88”

4.50” (Gas)

8.38” (Cold)

12.75” (Gas)

61.25”

53.30”

54.30”

23.30”25.00”

20.50”

5.50”


20.42” 20.42”(Electrical Box) (Electrical Box)

Dimensions


15

MODEL RTR-FS633* RTR-FS623* RTR-FS630*



Weight - Fully Assembled - Lbs. 620 530 350

Weight - Shipping (Total) - Lbs. 760 670 490




Color Gray


Hot Water Trunk Line Diameter 2-1/2"

Cold Water Trunk Line Diameter 2-1/2"



Water Trunk Connection Type 2-1/2" Pipe








Electric

Voltage 120V AC/60 Hz

Maximum Current (Amperes) 24 20 12

Controller UMC-117


BTU and Flow Rates

Number of Tankless Water Heaters 6 5 3




Maximum Input Rate (BTU/h) 1,199,400 999,500 599,700


Specifications



Rheem Model Number RTGH-CM95DVLN RTGH-CM95DVLP RTGH-CM95XLN RTGH-CM95XLP

Operation / Installation Forced Combustion / Indoor Only Forced Combustion / Outdoor Only

Minimum/Maximum Gas Rate (Input) 11,000 / 199,900

Approved Gas Types Natural Gas Liquid Propane* Natural Gas Liquid Propane*

Thermal Efficiency 96% 95%

Tankless Unit Dimensions (Inches) Height: 27-1/2 / Width: 18-1/2 / Depth: 9-3/4 / Weight: 82 Lbs.

Hot Water Capacity

– Minimum Activation Flow Rate 0.4

– Min Flow Rate (Gpm) 0.26

– Maximum Flow Rate 9.5

Temperature

– Factory Default Range 100°-120°F

– Optional Range 85°-185°F

Temperature (without Remote) 120°F

Freeze Protection To (Ambient Temp.) -30°F

Safety Devices

Clearances to Combustible and Noncombustable 24 inches (610mm) reccomended for service

– Top, Front and Bottom of Heater 12" (30cm)

– Sides of Heater 0.5" (1.3cm)

– Back of Heater and from Vent Pipe 0"

Min/Max Gas Supply Pressure 4" wc (1.0kPa) / 10.5" wc (2.6kPa)

8" wc (2.0kPa) / 13" wc (3.2kPa)

4" wc (1.0kPa) / 10.5" wc (2.6kPa)

8" wc (2.0kPa) / 13" wc (3.2kPa)

Min/Max Water Supply Pressure 14 psi (97kPa) / 150 psi (1035kPa)

NOx Complies with South Coast Air Quality Management District 14 ng/J or 20 ppm NOx emission levels

Venting

Centrotherm PPs (polypropylene stabilized) N/A

PVC (Schedule 40, ASTM D-1785) N/A

CPVC (Schedule 40, ASTM) N/A

ABS (Schedule 40, ASTM D-2661) N/A

Common Venting Centrotherm PPs(polypropylene solid)

N/A N/A

Power Venting (Room Air Intake) Individual or Common Vent Individual N/A

RTGH-CM95DVL RTGH-CM95XL

Rheem® Commercial Tankless Models with Manifold Control

LEED Points = 2

*Available on select systems

COMMERCIAL CONDENSING TANKLESS WATER HEATERS

Indoor Direct Vent

27 1/2”

18 1/2” 9 3/4”

5 1/2” 6 1/4”

2 1/2”3 1/4”4 1/4”

7 1/2”6 3/4”

3 1/2”2 3/4”

2 3/4”

18 1/2”9 3/4”

27 1/2”

2 1/2” 2 3/4”3 1/4”4 1/4”

7 1/2”6 3/4”

3 1/2”2 3/4”

Outdoor

Tankless Multi-Unit Flow Rates

Manifold QTY

Total System BTU based on

199,900 Btu per Unit

Total System Gallons Per Minute (GPM) - Per Temperature Rise (∆T)

35 45 50 60 70 77 80 90 100 110 120 140

1 199,900 9.5 8.4 7.5 6.3 5.4 4.9 4.7 4.2 3.8 3.4 3.1 2.72 399,800 19.0 16.7 15.0 12.5 10.7 9.8 9.4 8.4 7.5 6.8 6.3 5.43 599,700 28.5 25.1 22.5 18.8 16.1 14.6 14.1 12.5 11.3 10.2 9.4 8.14 799,600 38.0 33.4 30.1 25.1 21.5 19.5 18.8 16.7 15.0 13.7 12.5 10.75 999,500 47.5 41.8 37.6 31.3 26.8 24.4 23.5 20.9 18.8 17.1 15.7 13.46 1,199,400 57.0 50.1 45.1 37.6 32.2 29.3 28.2 25.1 22.5 20.5 18.8 16.17 1,399,300 66.5 58.5 52.6 43.8 37.6 34.2 32.9 29.2 26.3 23.9 21.9 18.88 1,599,200 76.0 66.8 60.1 50.1 42.9 39.0 37.6 33.4 30.1 27.3 25.1 21.59 1,799,100 85.5 75.2 67.6 56.4 48.3 43.9 42.3 37.6 33.8 30.7 28.2 24.210 1,999,000 95.0 83.5 75.2 62.6 53.7 48.8 47.0 41.8 37.6 34.2 31.3 26.811 2,198,900 104.5 91.9 82.7 68.9 59.1 53.7 51.7 45.9 41.3 37.6 34.4 29.512 2,398,800 114.0 100.2 90.2 75.2 64.4 58.6 56.4 50.1 45.1 41.0 37.6 32.213 2,598,700 123.5 108.6 97.7 81.4 69.8 63.4 61.1 54.3 48.9 44.4 40.7 34.914 2,798,600 133.0 116.9 105.2 87.7 75.2 68.3 65.8 58.5 52.6 47.8 43.8 37.615 2,998,500 142.5 125.3 112.7 94.0 80.5 73.2 70.5 62.6 56.4 51.2 47.0 40.316 3,198,400 152.0 133.6 120.3 100.2 85.9 78.1 75.2 66.8 60.1 54.7 50.1 42.917 3,398,300 161.5 142.0 127.8 106.5 91.3 83.0 79.9 71.0 63.9 58.1 53.2 45.618 3,598,200 171.0 150.3 135.3 112.7 96.6 87.9 84.6 75.2 67.6 61.5 56.4 48.319 3,798,100 180.5 158.7 142.8 119.0 102.0 92.7 89.3 79.3 71.4 64.9 59.5 51.020 3,998,000 190.0 167.0 150.3 125.3 107.4 97.6 94.0 83.5 75.2 68.3 62.6 53.7

17

• The vent termination does not count as part of the straight pipe equivalent when determining the total vent length.

• The system may be vented horizontally through a wall or vertically through the roof.

• Header kits have already been counted and do not need to be added.

Maximum Single Unit Vent Length (Intake/Outlet):

(ULC-S636 pipe must be used for Canada.)

NUMBER OF 90°

ELBOWS

MAX. LENGTH OF 2"

STRAIGHT PIPE

MAX. LENGTH OF 3"

STRAIGHT PIPE

MAX. LENGTH OF 4"

STRAIGHT PIPE

0 or 1 5.0 ft. (1.5 m) 38.0 ft. (11.6 m) 94.0 ft. (28.6 m)

2 3.5 ft. (1.0 m) 36.5 ft. (11.1 m) 88.0 ft. (26.8 m)

3 2.0 ft. (0.6 m) 35.0 ft. (10.6 m) 82.0 ft. (25.0 m)

4 N/A 33.5 ft. (10.2 m) 76.0 ft. (23.2 m)

5 N/A 32.0 ft. (9.8 m) 70.0 ft. (21.3 m)

6 N/A 30.5 ft. (9.3 m) 64.0 ft. (19.5 m)

Dimensions

To Determine Equivalent Vent Lengths, Add:

8" COMMON VENT

87 Degree Elbow 5.0 ft. (1.5m)

45 Degree Elbow 2.5 ft. (0.8m)

COMMERCIAL CONDENSING TANKLESS WATER HEATERS


For Rheem® Commercial Tankless Natural Gas Water Heaters Overview Rheem offers a manufacturer tested and UL/ULC listed common venting system providing longer lengths and fewer wall penetrations than single-unit venting. The system is polypropylene stabilized (PPs) material and Intertek certified for UL -1738 and ULC-S6 36 and manufactured by CentroTherm EcoSystems in the USA. Venting pieces are self-locking and sealing and can be pushed together without the use of cement or glue.

The common vent system is CSA certified (ANI Z21.10.3, Gas Water Heaters Standards) for use with up to 10 units of the following Rheem high efficiency, natural gas tankless water heaters; RTGH-C95DVLN and RTGH-CM95DVLN.

Common Vent System Characteristics

PROPERTY: STANDARD: RESULTS:

Materials & Construction

Low Temperature Handling UL-1738 Pass at -4°F (-20°C)

U.V. Stability ASTM G23-81 Pass

Water Absorption UL-1738 .22%

Common Vent Diameter CE EN-14471 6" (160mm) | 8" (200mm) | 10" (250mm)

Wall Thickness 10" (250mm) | 8" (200mm) CE EN-14471 Min. Thickness: .1024" (2.6mm) | Max. Thickness: .1969" (5.0mm)

6" (160mm) CE EN-14471 Min. Thickness: .1024" (2.6mm) | Max. Thickness: .1772" (4.5mm)

Deflection Temperature Under Load ASTM D648-86 302°F (150°C)

Flammability UL-94 V-0

Performance

Max. Flue Gas Temperature UL-1738 & ULC-S636CE EN-14471

230°F (110°C)248°F (120°C)

Clearance to Combustibles UL-1738 & ULC-S636 0" (0mm) at 230°F (110°C)

Leakage UL-1738 Pass

Pressure UL-1738 12.5 kPa

Pull UL-1738 & ULC-S636 Min. 101 lb. force (.45kN)

Flame Spread & SmokeUL-723, ULC-S102& ASTM E-84

<25/<50 w/CES recommended wrap

Fire RatingUL-1479, ULC-S115& ASTM E-814

2hr Fire Rating w/CES recommended passive fire protection system

Maximum Vent Length (air intake and exhaust) each: Equivalent Vent Length:

NUMBER OF WATER

HEATERS

6" COMMONVENT

8" COMMONVENT

10" COMMONVENT

2 70' (21 m) 100' (30 m) 100' (30 m)

3 50' (15 m) 100' (30 m) 100' (30 m)

4 40' (12 m) 100' (30 m) 100' (30 m)

5 N/A 100' (30 m) 100' (30 m)

6 N/A 78' (24 m) 100' (30 m)

7 N/A 55' (17 m) 100' (30 m)

8 N/A 43' (13 m) 100' (30 m)

9 N/A N/A 100' (30 m)

10 N/A N/A 85' (26 m)

6" COMMONVENT

8" COMMONVENT

10" COMMONVENT

87 Degree Elbow 8.0' (2.4 m) 5.0' (1.5 m) 5.0' (1.5 m)

45 Degree Elbow 4.0' (1.2 m) 2.5' (0.8 m) 2.5' (0.8 m)

COMMON VENTING

NOTES:• The vent termination does not count as part of the straight

pipe equivalent when determining the total vent length.• The system may be vented horizontally through a wall or

vertically through the roof.• Header kits have already been counted and do not need to

be added.

1 82 3 4

5

6

7

9 10

C NTROTHERM PPS PVC CPVC

Chemical Resistance

– Aromatic Hydrocarbons ü X X

– Sulfuric Acid ü X X

– Hydrochloric Acid ü X X

UL Listed (0°F to 230°F) Listed Not Listed Not Listed

Actual Working Temperature 32°F (0°C )248°F (120°C)

50°F (15°C )149°F (65°C)

50°F (15°C )194°F (90°C)

Softening Temperatures 302°F (150°C) 176°F (80°C) 200°F (93°C)

Environmentally Friendly Production ü X X

No Chloride Leaching ü X X

Fully Recyclable ü X X

NOTE: Temperature values in table represent exhaust flue temperatures. For approximate max. water set point temperatures, subtract 20 degrees F.

IMAGENUMBER PART DESCRIPTION 6" 8" 10"

1 Air Intake Branch Tee SP20918AD SP20918L SP20918AE

2 87 Degree Elbow SP20918BE SP20918M SP20918BM

3 45 Degree Elbow SP20918BF SP20918N SP20918BN

4 Straight Pipe, 1' SP20918BG SP20918P SP20918BP

5 Straight Pipe, 2' SP20918BH SP20918R SP20918BR

6 Straight Pipe, 3' SP20918BJ SP20918S SP20918BS

7 Straight Pipe, 6' SP20918BK SP20918T SP20918BT

8 90 Degree Elbow Vertical Support SP20918BL SP20918U SP20918BU

9 Bird Screen SS SP20918AY SP20918V SP20918AZ

10 Tee Termination SP20918BA SP20918W SP20918BB

11 Support Clamp SP20918AW SP20918AA SP20918AX

12 Centrocerin Lubricant SP20918H SP20918H SP20918H

Vent Run Accessories

19

For Rheem® Commercial Tankless Natural Gas Water Heaters

COMMON VENTING

12

Specifications The Common Vent System shall be manufactured from polypropylene stabilized (PPs). The Common Vent System shall be UL-1738 & ULC-S636 rated for use with maximum flue gas temperatures of 230°F (110°C), and be rated to a maximum vent pressure of 20" of water column.


BACK TO BACK COMMON VENTING

RHEEM PART NUMBER

PART DESCRIPTION

1 SP20918A 3" PVC to PP Adaptor

2

SP20918AH 6" Tee Cap

SP20918K 8" Tee Cap

SP20918AK 10" Tee Cap

3 SP20918D Non-Return Valve (NRV)

4 SP20918G 4" Straight Pipe, 2'

5

SP20918AG 6" Horizontal Drain Fitting

SP20918F 8" Horizontal Drain Fitting

SP20918AJ 10" Horizontal Drain Fitting

6 SP20918C Universal Ball Valve Siphon

7 SP20918Y 4" Connector Ring

8

SP20918AM 6" Back to Back Exhaust Branch Tee

SP20918AP 8" Back to Back Exhaust Branch Tee

SP20918AS 10" Back to Back Exhaust Branch Tee

9

SP20918AN 6" Back to Back Air Intake Branch Tee

SP20918AR 8" Back to Back Air Intake Branch Tee

SP20918AT 10" Back to Back Air Intake Branch Tee

10 SP20918AU 3" Tee Cap

11 SP20918AV 4" Tee Cap

12 SP20918BC 3", 45 Degree Elbow

13 SP20918BD 4", 45 Degree Elbow

14 SP20918AB 3" Bird Screen

15 SP20918H Centrocerin Lubricant

Back to Back Common Vent Kit Components

5

92

13

12

6

11

10

14

14

4

7

7

7

7

7

7

3

1

1

3

4

8

Exhaust

AirIntake

Parts 2, 9 & 10 in Direct Vent Header Kits onlyNOTE: All header kit parts available individually for replacement

order using part numbers above.NOTE: Exhaust branches are 4", intake branches are 3" diameter.

15

21

BACK TO BACK COMMON VENTING

The following back to back header vent kits can be purchased separately to create Back to Back Common Venting system:

RHEEM PART NUMBER

TRUNK DIAMETER

NUMBER OF UNITS

SP20913A

6"

2

SP20913B 3

SP20913C 4

SP20915A

8"

2

SP20915B 3

SP20915C 4

SP20915D 5

SP20915E 6

SP20915F 7

SP20915G 8

SP20917A

10"

2

SP20917B 3

SP20917C 4

SP20917D 5

SP20917E 6

SP20917F 7

SP20917G 8

RHEEM PART NUMBER

TRUNK DIAMETER

NUMBER OF UNITS

SP20912A

6"

2

SP20912B 3

SP20912C 4

SP20914A

8"

2

SP20914B 3

SP20914C 4

SP20914D 5

SP20914E 6

SP20914F 7

SP20914G 8

SP20916A

10"

2

SP20916B 3

SP20916C 4

SP20916D 5

SP20916E 6

SP20916F 7

SP20916G 8

These kits contain only minimum required vent parts to create a common venting trunk line and a connection from the trunk line to water heaters. Vent parts included in these kits DO NOT count for equivalent vent length except a 87 degree elbow for the air intake included in a room air kit. Additional vent parts will be required to complete the common venting system. Refer to “Parts List” of this installation instructions for additional information.

Direct Vent Header Kits

Room Air Intake Header Kits

Max. vent length distance (header kits not counted towards max vent length)


Diagrams illustrate horizontal intake and exhaust, vertical intake and exhaust also available, but not pictured.

INLINE COMMON VENTING

Inline Common Vent Kit Components

8 3, 73, 7

9 11 11

10 6

1111

5

334

2, 10 2, 1012

13 13

12

1 1

5

1 1

1011 11

10

RHEEM PART NUMBER PART DESCRIPTION

1 SP20918A 3" PVC to PP Adaptor

2 SP20918J 3", 87° Elbow

3

SP20918AD 6" Air Intake Branch Tee

SP20918L 8" Air Intake Branch Tee

SP20918AE 10" Exhaust and Air Intake Branch Tee

4

SP20918AH 6" Tee Cap

SP20918K 8" Tee Cap

SP20918AK 10" Tee Cap

5 SP20918D Non-Return Valve (NRV)

6 SP20918G 4" Straight Pipe, 2'

RHEEM PART NUMBER PART DESCRIPTION

7SP20918AC 6" Exhaust Branch Tee

SP20918E 8" Exhaust Branch Tee

8

SP20918AG 6" Horizontal Drain Fitting

SP20918F 8" Horizontal Drain Fitting

SP20918AJ 10" Horizontal Drain Fitting

9 SP20918C Universal Ball Valve Siphon

10 SP20918B 4", 87 Degree Elbow

11 SP20918Y 4" Connector Ring

12 SP20918AL 3" to 4" Increaser

13 SP20918AB 3" Bird Screen

14 SP20918H Centrocerin Lubricant

* 10" Common Vent Only

* 10" Common Vent Only


Parts 3 & 4 in Direct Vent Header Kits only

NOTE: All header kit parts available individually for replacement order using part numbers above.

NOTE: Exhaust branches are 4", intake branches are 3" diameter.

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INLINE COMMON VENTING

The following inline header vent kits can be purchased separately to create Inline Common Venting system:

These kits contain only minimum required vent parts to create a common venting trunk line and a connection from the trunk line to water heaters. Vent parts included in these kits DO NOT count for equivalent vent length except a 87 degree elbow for the air intake included in a room air kit. Additional vent parts will be required to complete the common venting system. Refer to “Parts List” of this installation instructions for additional information.

RHEEM PART NUMBER

TRUNK DIAMETER

NUMBER OF UNITS

SP20907A

6"

2

SP20907B 3

SP20907C 4

SP20909A

8"

2

SP20909B 3

SP20909C 4

SP20909D 5

SP20909E 6

SP20909F 7

SP20909G 8

SP20911A

10"

2

SP20911B 3

SP20911C 4

SP20911D 5

SP20911E 6

SP20911F 7

SP20911G 8

SP20911H 9

SP20911J 10

RHEEM PART NUMBER

TRUNK DIAMETER

NUMBER OF UNITS

SP20906A

6"

2

SP20906B 3

SP20906C 4

SP20908A

8"

2

SP20908B 3

SP20908C 4

SP20908D 5

SP20908E 6

SP20908F 7

SP20908G 8

SP20910A

10"

2

SP20910B 3

SP20910C 4

SP20910D 5

SP20910E 6

SP20910F 7

SP20910G 8

SP20910H 9

SP20910J 10

Direct Vent Header Kits

Room Air Intake Header Kits



Diagrams illustrate horizontal intake and exhaust, vertical intake and exhaust also available, but not pictured.

24PRINTED IN U.S.A. 01/18 WP FORM NO. TK-RR220

Rheem Water Heating • 1115 Northmeadow Parkway, Suite 100Roswell, Georgia 30076 • www.rheem.com

Rheem Canada Ltd./Ltée • 125 Edgeware Road, Unit 1 Brampton, Ontario L6Y 0P5 • www.rheem.com

INTEGRATED HOME COMFORTINTEGRATED HOME COMFORT

In keeping with its policy of continuous progress and product improvement, Rheem reserves the right to make changes without notice.

Water INTEGRATED HOME COMFORTCommercial GasTankless Water Heater Systems

Commercial Tankless SystemThe Commercial Tankless System model # ________________ shall be a factory assembled pre-plumbed system on a frame and include Rheem RTGH-CM95 Condensing Tankless Water Heaters. The system shall include single point connections for incoming water, outgoing water, gas, condensate drainage and electrical.

The system shall include 2.5 inch copper water supply manifolds with 2 foot long 3/4 inch flexible stainless steel water lines to the heaters, a 1-1/2 inch schedule 40 gas supply manifold with 3 foot long 3/4 inch CSST flexible gas lines to the heaters, and isolation valves with 150 psi pressure relief valves for each heater.

The system shall be assembled as a wall hanging, wall mount, or free standing design based on the model number. All configurations will fit through a standard 36" door opening. The frame will be constructed of powder coat painted 16 Gauge steel for wall hanging or 14 Gauge Galvanized Steel for wall mount and free standing

The commercial tankless system shall include factor installed control manifolding for all units and be expandable for up to 20 heaters.

RTGH-CM95 Condensing Tankless Water HeatersThe fully modulating, on-demand, condensing gas fired tankless water heater(s) shall be Rheem models RTGH-CM95DVLN, RTGH-CM95DVLP, RTGH-CM95XLN, or RTGH-CM95XLP, having an input rating of 11,000 BTU/h through 199,900 BTU/h and available in NG or LP. The heater(s) shall have 3/4 inch male NPT water and gas connections. The heater(s) shall have a minimum flow rate of 0.26 GPM and an activation rate of 0.40 GPM. An integrated condensate neutralizer will be included with every unit. The inlet gas supply pressures shall be 4.0 in. WC (min.) up to 10.5 in. WC (max) for NG and 8.0 in. WC (min.) up to 13 in. WC (max.) for LP. The heater(s) shall be factory supplied with a manual gas shutoff valve, a pressure relief valve, 2 water service valves and a temperature remote, RTG20006, that can be installed up to 195 ft. from the heater using 18 gauge (minimum) control wire. The temperature remote shall provide diagnostic information, fault history, and heater set temperature with a minimum set water temperature of 85°F and maximum set water temperature of 185°F. The heater(s) shall operate using 120 V / 60 Hz power source. The heater(s) will incorporate a factory installed power cord (indoor models only).

The water heater(s) shall use a copper, fin tube primary heat exchanger. The secondary heat exchanger shall be constructed from stainless steel 316L. The heater(s) shall be controlled by an on-board solid-state printed circuit board which uses the following factory installed components: thermistors to monitor water inlet and outlet temperatures and heat exchanger temperature; a flow sensor to measure flow rate; flame rods to monitor flame is on or off and if oxygen level is appropriate. The heater shall include inline fusing for electrical surge protection, an electronic igniter coil, aluminized stainless steel burners, Guardian OFW overheat film wrap, heat exchanger thermistor and outlet thermistor to work as high limit switch, modulating gas valve, an ambient thermistor and freeze protection to -30°F.

The manifold ready heaters can manifold controls to EZ- link up to 20 heaters to provide additional capacity. Each manifold ready heater shall include a factory installed control module and the control cable shall be included with the units. The heaters controls shall modulate the system for the most efficient performance and rotate the initial heater for balanced duty/cycle operation.

The heater(s) shall be CSA approved according to ANSI Z21.10.3 and CSA 4.3 for sale in the United States and Canada, ENERGY STAR® qualified with a minimum Thermal Efficiency of 96% for Indoor and 95% for Outdoor units, meets the energy efficiency requirements of the U. S. Department of Energy and ASHRAE 90.1-2007, and complies with Ultra-Low NOx emissions of 14 ng/J or 20 ppm, and will be certified to NSF 5 standards.

VentingIndoor Independent Venting: The indoor heater(s) shall be vented with 2", 3" or 4" diameter PVC schedule 40, CPVC schedule 40, CentroTherm PPs or ABS (U. S. only) with a length not to exceed 5 ft. (equivalent) for 2", 38 ft. (equivalent) for 3" vent or 94 ft. (equivalent) for 4" vent, terminating horizontally or vertically. The intake pipe may use material such as PVC, ABS, PP, or aluminum and cannot exceed 5 ft. (equivalent) for 2”, 38 ft. (equivalent) for 3" vent or 94 ft. (equivalent) for 4" vent. For single vent and common vent applications the heater can use room make up air.

Indoor Common Venting: RTGH-CM95DVLN shall be common vented with up to 4 units back-to back with a 6" diameter trunk line or up to 8 units back-to back with an 8" or 10" diameter trunk line. The common vent system shall be manufactured from polypropylene solid and be rated to a maximum vent pressure of 20" of water column and UL-1738 & ULC-S636 for use with maximum flue gas temperatures of 230°F (110°C).

Outdoor Venting: The outdoor heater(s) shall be constructed with an integral exhaust vent on the front of the heater.

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Rheem Commercial Tankless System · 2 | Rheem® Commercial Gas Tankless Water Heater Systems MODEL...

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