Rinnai Demand Duo User'S Installation And Operation Manual Download Page 1

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Rinnai Commercial Hybrid System Installation and Operation Manual

INSTALLATION AND OPERATION MANUAL

Demand Duo™

Commercial Hybrid Water Heating System

800

621

9419

rinnai.us

If the information in these instructions 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.

•

WHAT TO DO IF YOU SMELL GAS



Do not try to light any appliance.



Do not touch any electrical switch; do not use any phone in your building.



Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.



If you cannot reach your gas supplier, call the fire department.

•

Installation and service must be performed by a qualified installer, service agency or the gas supplier.

WARNING

Demand Duo™ Model

CHS199100CU

Summary of Contents for Demand Duo

Page 1: ...e gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installa...

Page 2: ...hecklist 14 5 Venting 15 Venting Guidelines 15 Venting Installation Sequence 16 Termination Considerations 16 Select a Vent Type 17 6 System Plumbing 35 Pressure Relief Valve Requirements 35 PRV Temperature Requirements 35 Piping Diagram for Basic Installations 36 Piping Diagram for Multiple Unit Installations 37 Connect Water Heater to the Water Supply 38 Fill the System 38 Condensate 39 7 Gas Su...

Page 3: ...cting gas lines water lines valves and electricity Knowledge of applicable national state and local codes Installing venting through a wall or roof Training in installation of tankless water heaters Training on Rinnai Tankless Water Heaters is accessible at www trainingevents rinnai us Read all instructions in this manual before installing the system The system must be installed according to the e...

Page 4: ...artment Installation and service must be performed by a qualified installer service agency or the gas supplier The warning signs in this manual are here to prevent injury to you and others Please follow them explicitly WARNING Indicates an imminently hazardous situation which if not avoided will result in personal injury or death Indicates a potentially hazardous situation which if not avoided cou...

Page 5: ...us and will void the warranty Proper venting is required for the safe operation of this appliance Flammable liquids such as cleaning solvents aerosols paint thinners adhesives gasoline and propane must be handled and stored with extreme care These flammable liquids emit flammable vapors and when exposed to an ignition source can result in a fire hazard or explosion Flammable liquids should not be ...

Page 6: ...Water Inlet 1 1 2 in MNPT Electric Connections Appliance AC 120 Volts 60Hz Integrated Temperature Controller DC 12 Volts Digital Water Temperature Control Simulation Feed Forward and Feedback Commercial Energy Star Certified CU199i Yes Complies with South Coast Air Quality Management District 14 ng J or 20 ppm NOx Emission Levels CU199i Yes Product Number Gas Type Input Thermal Efficiency U S Gall...

Page 7: ...Rinnai Commercial Hybrid System Installation and Operation Manual 7 Dimensions and Connections RIGHT TOP FRONT LEFT Measurements in inches in ...

Page 8: ...3 84 in W C the appliance must be isolated from the gas supply piping by closing its individual manual shutoff valve You must follow the installation instructions and those in the venting section for adequate combustion air and exhaust 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 cont...

Page 9: ...ce H Condensate Discharge Pipe Must include air gap I Drain Pan J Vent pipe PVC Room Air shown for illustration purposes see venting section for other options K Gas Control Valve L Gas Union M Drip Leg Sediment Trap N Cold Water Supply Valve O Cold Water Supply P Thermal Expansion Tank Q Non Tempered Supply Line R Thermostatic Mixing Valve S Non Tempered Return Line Field Supplied Mixing Valve Ins...

Page 10: ...en and pets Do not use these bags in cribs beds carriages or playpens The bags are not a toy WARNING Gather the recommended tools and parts before starting installation Items Needed Not Included Pipe wrenches x2 Phillips Head screwdriver Adjustable pliers Wire cutters Gloves Safety glasses Level Soap or gas leak detector solution Approved venting Teflon tape recommended or pipe compound Pipe insul...

Page 11: ...en contains these compounds Therefore it is recommended that external outdoor models be used for these locations where possible In applications utilizing room air where there are high levels of particulates Rinnai offers a room air screen The water heater venting and vent termination s should not be installed in any areas where the air may contain these corrosive compounds If you install this wate...

Page 12: ...n 51 mm 0 in from vent components Clearance for servicing the anode rods is 54 in from the top of the water heater Bottom Ground 0 in Front 6 in 152 mm Clearance for servicing is 24 in 610 mm in front of water heater Back 0 in Sides Left and Right 0 in Door 0 Minimum 0 Minimum 0 Minimum 12 Minimum 6 Minimum ...

Page 13: ...ns 1 Loosen the screws along the perimeter of the plastic enclosures 2 Remove the plastic enclosures 3 Position straps around the tank per the requirements of California Office of the State Architect DO NOT POSITION THE STRAPS OVER PIPE FITTINGS or WIRE 4 Replace the plastic enclosures Modification of the plastic enclosures may be necessary to fit the enclosures over the earthquake straps 5 Replac...

Page 14: ... does not contain chemicals or exceed total hardness that will damage the heat exchanger A standard 3 prong 120 VAC 60 Hz properly grounded wall outlet or other 120 VAC 60 Hz source is available The installation must conform with local codes or in the absence of local codes with the National Fuel Gas Code ANSI Z223 1 NFPA 54 or the Natural Gas and Propane Installation Code CSA B149 1 Use this chec...

Page 15: ...eptable by the installer or the local inspector Refer to the instructions of the vent system manufacturer for component assembly instructions WARNING DO NOT use cellular core PVC CPVC DO NOT use Radel ABS or galvanized material to vent this appliance DO NOT cover non metallic vent pipe and fittings with thermal insulation DO NOT combine vent components from different manufacturers DO NOT reduce th...

Page 16: ...on locations near a dryer vent Avoid termination locations near commercial cooking exhaust Avoid termination locations near any air inlets You must install a vent termination at least 12 in above the ground or anticipated snow level The vent for this appliance shall not terminate Over public walkways Near soffit vents or crawl space vents or other area where condensate or vapor could create a nuis...

Page 17: ...iple water heaters sharing a combustion air header and a separate exhaust header that vents di rectly through separate penetrations to the outside Combustion Air Exhaust Exhaust Room Air For Combustion Twin Pipe Combustion air and exhaust vent directly Room air is used for combustion while exhaust vents to the outside Multiple water heaters using room air for combustion while sharing an exhaust he...

Page 18: ...to non mechanical air supply inlet to building or the combustion air inlet to any other appliance 36 in 91 cm 12 in 30 cm K Clearance to a mechanical air supply inlet 6 ft 1 83 m 3 ft 91 cm above if within 10 ft 3 m horizontally L Clearance above paved sidewalk or paved driveway located on public property 7 ft 2 13 m 1 M Clearance under veranda porch deck or balcony 12 in 30 cm 2 Direct Vent Termi...

Page 19: ...nals at different levels Note 24 in 0 61 m to wall or parapet Combustion air and exhaust vent directly through a single concentric connection Hot exhaust exits through the interior tube while combustion air enters through the outer layer Combustion air Exhaust Concentric Pipe Termination Clearances Direct Vent Concentric Pipe 1 Concentric Pipe Overview Combustion air Inside Corner 12 in 0 30 m 12 ...

Page 20: ... termination according to the diagrams and instructions in this manual Slope the venting 1 4 in per foot toward the appliance according to the vent manufacturer s installation instructions Dispose of condensate per local codes Direct Vent Concentric Pipe 1 2 3 1 4 Concentric Vent Maximum Equivalent Length Vent Sizes 2 in X 4 in 3 in X 5 in Vent Lengths 65 ft 20 m 150 ft 46 m 45 elbow is equivalent...

Page 21: ...st case scenario of 3 X 90 elbows or 18 equivalent ft Twin Pipe Vertical Termination of Multiple Water Heaters Combustion air termination not permitted in shaded area Horizontal Vent and Combustion Air Piping 12 in 0 30 m above grade or anticipated snow level 12 in 0 30 m minimum 12 in 0 30 m minimum above combustion air opening Roof 12 in 0 30 m above grade or anticipated snow level 12 in 0 30 m ...

Page 22: ...tion With the use of a pipe reducer installers can use a 3 in 76 mm pipe for the combustion air and exhaust Remove and discard the screw from the combustion air vent connection Remove and discard the combustion air vent cap Install the combustion air vent pipe Ensure it is properly seated Secure the combustion air vent pipe to the combustion air vent connection with the supplied screw Install the ...

Page 23: ...ation 2 in or 3 in PVC Low Profile Termination Configuration This configuration requires the use of a Concentric Vent Termination Exhaust and combustion air MUST NOT be brought together into a single PVC pipe using a pipe fitting Twin Pipe Maximum Equivalent Length Table Vent Sizes 2 in 51 mm 3 in 76 mm Vent Lengths 65 ft 20 m 150 ft 46 m 45 elbow is equivalent to 3 ft 1 m 90 elbow is equivalent t...

Page 24: ... maximum vertical distance of 15 ft 4 m J Clearance to non mechanical air supply inlet to building or the combustion air inlet to any other appliance 36 in 91 cm 4 ft 1 2 m below or to side of opening 1 ft 300 mm above opening K Clearance to a mechanical air supply inlet 6 ft 1 83 m 3 ft 91 cm above if within 10 ft 3 m horizontally L Clearance above paved sidewalk or paved driveway located on publ...

Page 25: ... terminations horizontal and or vertical must terminate 12 in above grade or anticipated snow level Exhaust Termination Clearances for Internal Indoor Room Air Applications Non Direct Vent Room Air 2 NOTE Installation of Non Direct Vent Room Air must use listed category IV venting 1 52 m vertically between terminals ...

Page 26: ...lume is less than 50 cubic feet per 1000 Btu hr 4 8 m3 per kW per hour of the aggregate input rating of all appliances installed in that space Examples include a small room closet alcove utility room etc A confined space must have two combustion air openings Size the combustion air openings based on the BTU input for all gas utilization equipment in the space and the method by which combustion air...

Page 27: ...m of the top of the confined space and the lower opening shall be within 12 in 0 30 m of the bottom of the confined space Openings must be positioned as to never be obstructed Louvers and Grills When sizing the permanent opening consideration must be taken for the design of the louvers or grills to maintain the required free area required for all gas utilizing equipment in the space If the free ar...

Page 28: ... and Operation Manual Exhaust Vent termination per ANSI Z223 1 NFPA 54 For clearances not specified in ANSI Z223 1 NFPA 54 clearances are in accordance with local installation codes and the requirements of the gas supplier Non Direct Vent Room Air 2 ...

Page 29: ...ide elbow and secure with the supplied screw Use the room air screen for environments where room air is dusty Note 2 in vent screen supplied with water heater Room air screen is available as an accessory Glue elbow to the combustion air PVC vent pipe per manufacturer s instructions Install the exhaust vent pipe Ensure it is properly seated Secure the exhaust vent pipe to the exhaust adapter ring w...

Page 30: ...Side Wall Termination Configuration 2 in or 3 in Schedule 40 PVC CPVC Tee Vertical Termination Configuration Non Direct Vent Room Air Example Vent Applications Non Direct Vent Room Air Maximum Vent Length Non Direct Vent Room Air 2 Room Air Maximum Equivalent Length Table Vent Sizes 2 in 51 mm 3 in 76 mm Vent Lengths 65 ft 20 m 150 ft 46 m 45 elbow is equivalent to 3 ft 1 m 90 elbow is equivalent ...

Page 31: ...ional clearance requirements specific to the Common venting allows multiple Rinnai Tankless Water Heaters to share the same vent system Rinnai water heaters can only be common vented with Schedule 40 PVC CPVC or with the Rinnai C Vent Common Vent System Example Rinnai Common Venting C Vent Example Schedule 40 PVC CPVC Common Vent DO NOT DO NOT obstruct combustion air flow or exhaust gas flow in th...

Page 32: ... for 90 elbows For use with CU199i internal indoor tankless water heaters only Header Vent Length Common Vent Maximum Equivalent Vent Lengths Common Vent Maximum Equivalent Vent Length Rinnai Common Vent System or Schedule 40 PVC CPVC Water Heater Model Water Heaters Max System BTU HR HEADER DIAMETER 3 in 4 in 6 in 3 in Vent Diameter 4 in Vent Diameter 6 in Vent Diameter 6 in Vent Diameter CU199i ...

Page 33: ...all Terminal Kit 6 in CVent Wall Terminal Kit 6 in 5 780061 780060 Intake Rain Cap 6 in Intake Rain Cap 4 in N A 790098 790097 Exhaust Flue Rain Cap 6 in Exhaust Flue Rain Cap 4 in N A Diagram Horizontal Vertical Equivalent Length ft Tee 10 90 Elbow 10 45 Elbow 5 Product Description Horizontal Vertical Equivalent Length ft Diagram Part Number Product Description Common Vent Terminations Rinnai Com...

Page 34: ...de a condensate drain and trap between the header and vent length Condensate trap must include a loop that can hold 6 in 15 cm of water See PVC CPVC Common Vent Installation illustration on this page Keep solvents away from heat sparks flames and all other sources of ignition Do not solder cut or weld until all vapors have dissipated PVC solvents are heavier than air causing them to settle at low ...

Page 35: ...e relief valve Water discharged from the pressure relief valve could cause severe burns instantly or death from scalds Install the Temperature Pressure Relief T P Valve according to these instructions The tank portion of this system is provided with a combination temperature pressure relief valve For safe operation of the water heater the relief valve s must not be removed from its designated poin...

Page 36: ...on the appliance Components of condensate drainage shall be CPVC or PVC material All components shall be selected for the pressure and temperature rating of the installation Where the drain pipes from more than one unit are manifolded together for condensate drainage the pipe or tubing shall be sized in accordance with an approved method as dictated by local codes Condensate must be disposed of ac...

Page 37: ...nsate drainage shall be CPVC or PVC material All components shall be selected for the pressure and temperature rating of the installation Where the drain pipes from more than one unit are manifolded together for condensate drainage the pipe or tubing shall be sized in accordance with an approved method as dictated by local codes Condensate must be disposed of according to local codes HOT WATER SUP...

Page 38: ...re all fittings are tight It is imperative that open flame is not applied to the inlet and outlet fittings as heat will damage or destroy the plastic lined fittings This will result in premature failure of the fittings which is not covered by the warranty DO NOT OPERATE THIS WATER HEATER UNLESS IT IS COMPLETELY FULL OF WATER To prevent damage to the water heater all air must be relieved from the s...

Page 39: ... the drain line 1 2 inch NPT The end of the condensate drain pipe should be open to the atmosphere The end should not be under water or other substances To minimize freezing of the condensate run the condensate drain line through an interior wall or between insulation and an interior wall Ensure that condensate drain PRV and T P are piped separately to their own dedicated drain lines INFORMATION W...

Page 40: ...he condensate to drain CORRECT Pipe open to atmosphere Pipe submerged in water NOT CORRECT Water Level Water Level The end of the condensate drain pipe should be open to the atmosphere The end should not be under water or other substances EXTERNAL TRAP NOT REQUIRED DO NOT DO NOT connect the condensate drain line with an air conditioning evaporator coil drain Water heaters have an integrated conden...

Page 41: ...closure Gas Supply 7 Connect the Gas Supply A licensed professional must install the gas supply Turn off 120V power supply Turn off the gas Gas is flammable Do not smoke or provide other ignition sources while working with gas Do not turn on the water heater or gas until all fumes are gone WARNING To connect the gas supply follow the instructions below Lower Enclosure 3 4 in MNPT Gas Connection on...

Page 42: ...ctor solution or an equivalent nonflammable solution as applicable Since some leak test solutions including soap and water may cause corrosion or stress cracking the piping shall be rinsed with water after testing unless it has been determined that the leak test solution is non corrosive 6 Use approved connectors to connect the water heater to the gas line Purge the gas line of any debris before c...

Page 43: ...e provided inside the water heater The water heater requires 120 VAC 60 Hz power from a properly grounded circuit If using the 5 ft 1 5 m power cord included with controller plug it into a standard 3 prong 120 VAC 60 Hz properly grounded wall outlet Do no connect power to the commercial hybrid system prior to completing installation and the system has been filled with water The Tankless Water Heat...

Page 44: ...ng the tank temperature J22 and tankless outlet temperature J2 the system controller will energize 120V the pump when the tank temperature drops When the tank temperature returns to the selected set temperature the system controller will de energize the pump and remain in standby until the tank temperature drops again Electrical Connections System Controller When power is supplied the system contr...

Page 45: ...e the unit Unscrew the water filter Rinse the filter to remove any debris Install the filter and open the isolation valves Check the gas lines and connections for leaks Confirm that the gas inlet pressure is within limits Confirm that the water heater is rated for the gas type supplied Confirm that the electricity is supplied from a 120 VAC 60 Hz power source is in a properly grounded circuit and ...

Page 46: ...the water which is common in well systems This issue can usually be eliminated or reduced by changing the magnesium anodes to aluminum anodes and by chlo rinating the storage tank and plumbing system If the problem continues special filtration equipment may be required Under no circumstances are the anodes to be removed from the water heater on a permanent basis Removal of the anodes will lead to ...

Page 47: ...Rinnai Commercial Hybrid System Installation and Operation Manual 47 Date Service Maintenance Completed Service Maintenance Log Appendices 11 ...

Page 48: ...107000375 PRV PIPE 45 DEG 12 105000223 CONTROLLER ASSEMBLY 13 105000225 THERMISTOR 3 4MNPT 10K Ohm 14 107000229 CLIP ON THERMISTOR 10K Ohm 15 107000260 HEX NIPPLE 3 4 IN 16 107000259 PUMP 17 107000311 TANK CLEANOUT FLANGE GASKET 18 107000312 HAND HOLE CLEANOUT COVER 19 109000633 CLEANOUT BOLTS 5 16IN 18 X 1IN 20 107000374 FLEX LENGTH 15 IN 3 4 NPSH X 3 4 NPSH 21 107000401 TANK 119 GALLON W BRACKET...

Page 49: ...the labor warranty period All repair parts must be genuine Rinnai parts All repairs or replacements must be performed by a licensed professional who is properly trained to do the type of repair Replacement of the product may be authorized by Rinnai only at its sole discretion Rinnai does not authorize any person or company to assume for it any obligation or liability in connection with the replace...

Page 50: ...imitations on how long an implied Limited Warranty lasts so the above limitation may not apply to you Rinnai shall not be liable for indirect incidental special consequential or other similar damages that may arise including lost profits damage to person or property loss of use inconvenience or liability arising from improper installation service or use Some states do not allow the exclusion or li...

Page 51: ...Rinnai Commercial Hybrid System Installation and Operation Manual 51 Notes ...

Page 52: ...100000571 00 4 2018 ...

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