Rinnai Demand Duo CHS398100HiN Installation And Operation Manual

Commercial hybrid water heating system

Hide thumbs

Table Of Contents

Table of Contents

Quick Links

Download this manual

For Indoor Commercial Applications Only:

This product is NOT intended for residential applications.

CHS398100HiN . ..... 119 Gallon, 398,000 BTU

CHS398100HiP . ...... 119 Gallon, 398,000 BTU

CHS320100HViN . ... 119 Gallon, 320,000 BTU

CHS320100HViP . ... 119 Gallon, 320,000 BTU

CHS398100HViN . ... 119 Gallon, 398,000 BTU

CHS398100HViP . ... 119 Gallon, 398,000 BTU

CHS398100HVAiN .. 119 Gallon, 398,000 BTU

CHS398100HVAiP .. 119 Gallon, 398,000 BTU

Table of Contents

Need help?

Do you have a question about the Demand Duo CHS398100HiN and is the answer not in the manual?

Questions and answers

Summary of Contents for Rinnai Demand Duo CHS398100HiN

Page 1 For Indoor Commercial Applications Only: This product is NOT intended for residential applications. CHS398100HiN ..119 Gallon, 398,000 BTU CHS398100HiP ..119 Gallon, 398,000 BTU CHS320100HViN ..119 Gallon, 320,000 BTU CHS320100HViP ..119 Gallon, 320,000 BTU CHS398100HViN .
Page 2 Installation and service must be performed by a trained and qualified professional, service agency or the gas supplier. Copyright 2022 Rinnai America Corporation. Rinnai® is a registered trademark of Rinnai Corporation used under license by Rinnai America Corporation. Rinnai America Corporation continually updates materials, and as such, content is subject to change without notice.
Page 3: Table Of Contents
1. Welcome ........................... 4 2. Safety ..........................5 2.1 Safety Symbols ......................5 2.2 Safety Precautions ..................... 5 3. About ..........................7 3.1 Components ....................... 7 3.2 Specifications ......................8 3.3 Dimensions ......................... 11 4. Installation Preparation ..................... 13 4.1 Guidelines ........................13 4.2 Typical Installations ....................
Page 4: For Your Records
Thank you for purchasing Rinnai’s Demand Duo™ 2 Commercial Hybrid Water Heating System. • You must read the entire manual to This manual provides information on the properly operate the water heater and to installation, operation, and maintenance of the have regular maintenance performed.
Page 5: Safety Symbols
• Always check the water temperature before entering a shower or bath. Topics in this section • To protect yourself from harm, before • Safety Symbols performing maintenance: • Safety Precautions − Turn off the electrical power supply by unplugging the power cord or by turning off the electricity at the circuit breaker.
Page 6 Test the temperature of the water before placing damage. a child in the bath or shower. • Rinnai recommends that every home have a Do not leave a child or an infirm person in the carbon monoxide (CO) alarm in the hallway bath unsupervised.
Page 7: Components
Topics in this section • Components • Specifications • Dimensions Figure 1: Components Anode Rod Locations Horizontal Models Vertical Models (left and right side) Note: same for both units 119-Gallon Hot Water Outlet Connection Storage Tank Securing Bracket 2-Unit Tankless Rack System Hot and Cold Water Manifolds...
Page 8 Model Number CHS398100CU Dimensions (Assembled) in. (mm) w x h x d: 38.81 x 69.60 x 40.96 (985.8 x 1,767.8 x 1,040.4) Rack (with 2 Tankless Water Heaters): 220 lbs (100 kg); Weight Tank: 310 lbs (141 kg) Complete System: 530 lbs (240 kg) Installation Type Internal (Indoor) Commercial Applications Category and Ignition System...
Page 9 Model Number CHS398100HV CHS398100HVA*** CHS320100HV Dimensions (Assembled) in. (mm) w x h x d: 32.4 x 78.8 x 40.2 (822.7 x 2,001.5 x 1,021.1) Weight Tank: 310 lbs (141 kg) Complete System: 530 lbs (240 kg) Installation Type Internal (Indoor) Commercial Applications Category and Ignition System Category IV, Direct Electronic Ignition Minimum: 30,400 (9)
Page 10 Recovery Capabilities for CHS398100 models U.S. Gallons / Hour Liters / Hour at Temperature Rise Indicated °F Tank Capacity °C 119 Gal. GPH 1,528 1,147 450 Liters LPH 5,784 4,342 3,471 2,892 2,479 2,169 1,931 1,738 1,579 1,446 1,336 1,242 Recovery Capabilities for CHS320100HV U.S.
Page 11 Models Measurements below CHS398100HiN are shown in inches CHS398100HiP (millimeters). LEFT RIGHT 58.55 in.* (1,487 mm) 42.71 in. (1,085 mm) GAS *Temperature and Pressure Relief Valve 44.21 in. (1,123 mm) FRONT Ø 28.16 in. (715 mm) 5.91 in. (150 mm) 20.50 in.
Page 12 Measurements below Models are shown in inches CHS398100HViN (millimeters). CHS398100HViP CHS398100HVAiN CHS398100HVAiP CHS320100HViN CHS320100HViP FRONT RIGHT 3.49 (88.64) 4.14 (105) Drain 1-1/2 in. MNPT Cold Ø 28.16 (715) 28.76 (730) H-Series Demand Duo™ 2 Installation and Operation Manual...
Page 13: Guidelines
Installing venting through a wall or roof; and training in installation of tankless water heaters. Training for Rinnai Tankless Water Heaters is accessible online at • DO NOT install the Demand Duo™ 2 www.trainingevents.rinnai.us.
Page 14 Field Item Supplied ❶ ❷ ✓ Hot Water Outlet ❶ Hot Water Outlet Shut-Off ✓ ❷ ❸ Valve ✓ Cold and Hot Unions ❸ ❹ Temperature-Pressure ❺ ❾ ❹ Relief Valve ⓬ ❿ ❻ Temperature-Pressure Relief Valve Discharge ✓ ❺ Pipe (do not cap, plug or ⓭...
Page 15 Field Item Supplied ❷ ❶ ✓ Hot Water Outlet ❶ Hot Water Outlet Shut-Off ❸ ✓ ❷ Valve ✓ ❾ Cold and Hot Unions ❸ ❿ ❹ Temperature-Pressure ❹ Relief Valve ❻ ❺ Temperature-Pressure Relief Valve Discharge ✓ ❺ ⓬ Pipe (do not cap, plug or reduce) ❼...
Page 16: Shipping Box
Carefully unpack the shipping boxes and verify the following contents are included. If any items are damaged or missing, contact your local dealer/distributor or call Rinnai Customer Care at 1-800-621-9419. Do not attempt to use any item that appears damaged.
Page 17 • Soap or gas leak detector solution • Approved venting This section provides information on the • Teflon tape (recommended) or pipe com- importance of water quality to the Rinnai pound Tankless Water Heater. The information is intended to serve as general guidelines only and •...
Page 18 Therefore, it is recommended to install as a direct vent (use outside air for combustion). 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 2 in.
Page 19: Step 1: Transport
Topics in this section Step 1: Transport Step 2: Secure for Earthquake Step 3: Position Tank and Connect Water Step 4: Install Rack Frame Legs Step 5: Position Rack Step 6: Install Water Flex Lines Step 7: Secure Rack Step 8: Install Vent System NOTICE Step 9: Install Relief Valve Lines Step 10: Fill System with Water...
Page 20 4. Install a shut-off valve on the cold and hot water lines (see E). 5. Rinnai recommends to install unions on the cold and hot water lines so that the water heater can easily disconnect if servicing is required (see F).
Page 21 To install the rack frame legs: 1. Lay the rack assembly down on the shipping pallet. 2. Position the frame legs (supplied) on each rack leg so that the threaded inserts are centered over the open slots. Frame leg Threaded NOTE inserts The pallet may need to be...
Page 22 To position the rack: 1. Loop hoisting straps (field-supplied) around the rack top frame. Straps should support approximately 220 lb (100 kg). Loop hoisting straps around rack top frame. 2. Position the rack in front of the tank, and then gently push the rack back as close to the tank as possible so that the flex lines can connect the two assemblies.
Page 23 To install flex lines: 1. Connect the 18 in. (457 mm) flex line from the cold water manifold to the threaded connection on top of the pump. Tighten to 25 ft-lb torque. Ensure the gasket is in the flex line. Cold water manifold 18 in.
Page 24: Bottom View
To secure the rack: 1. The rack system must be anchored and secured in accordance with national and/or local codes having jurisdiction. Base holes to secure the rack are 0.5 in. (13 mm) in diameter. Reference local codes regarding minimum concrete thickness and use appropriate expansion anchors that are capable of supporting the rack system weight...
Page 25 To secure the rack: Refer to the Tankless Water Heater Installation and Operation Manual (supplied with each Tankless Water Heater in the Demand Duo™ 2 system) for complete venting information and instructions. Topics in this manual include: Venting Guidelines; Venting Installation Sequence and Instructions; Venting Options;...
Page 26 To secure the rack: A Pressure Relief Valve (PRV) is pre-installed on each tankless water heater in the Demand Duo™ 2 system. A combination Temperature and Pressure (T&P) Relief Valve is pre-installed on the tank. Install a drain pipe from each PRV and T&P Valve into a floor drain as shown in the diagram below. Refer to the guidelines on the next page.
Page 27 • An approved PRV (pre-installed on each tankless water heater in the Demand Duo™ 2 • For safe operation, the relief valve(s) must not system) is required by the American National be removed from its designated point of Standard (ANSI Z21.10.3) for all water heating installation or plugged.
Page 28 When filling the system with water, follow these guidelines: • To prevent damage to the water heater, all air must be relieved from the system and a hot water fixture must be flowing water before the water heater is plugged in and turned on. DO NOT OPERATE THE WATER HEATER UNLESS IT IS COMPLETELY NOTICE FULL OF WATER.
Page 29 • A condensate neutralizer kit is available from Condensate Drain Line Rinnai. The kit allows condensate to flow (1/2 in. Clear Vinyl Tubing) through neutralizing media that raises the pH of the condensate to a level that will help prevent corrosion of the drain and public sewer system.
Page 30: To Connect The Gas Supply
WARNING • 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. To connect the gas supply: 1.
Page 31 To connect the communication cable: 1. Route the communication cable from the digital controller through the bottom side of the tankless water heater. 2. Plug the communication cable into the serial port located at the front top side of the tankless PC Board.
Page 32: To Connect The Power Supply
When connecting the power supply, follow these guidelines: • Do not rely on the gas or water piping to ground the water heater. Ground locations are provided inside the water heater. • Do not exceed the limits of the 15A circuit. •...
Page 33 b. Remove the two screws securing the front 2. Plug the controller power cord into the panel to the gang box. Then, remove the front electrical assembly on the storage tank. panel. WARNING DO NOT plug the controller power cord into the electrical assembly until the storage tank is filled as the pump will overheat.
Page 34 Complete the following checklist when installation is complete. You should be able to answer YES to each question. If you answer NO, installation is not complete. Refer to the applicable section in this manual and the tankless water heater installation and manual for additional information. INSTALLATION DETAILS YES NO Have you verified the unit, vent and air intakes meet the clearance requirements?
Page 35: Storage Tank
This anode protects the glass-lined tank from corro- sediment, if allowed to accumulate, will reduce sion. Rinnai strongly recommends to inspect the the efficiency and the life of the tank. anodes every two (2) years. If more than half of...
Page 36 Hot Water Supply Line LEGEND Union Ball Valve Check Valve Circulation Pump Expansion Tank Gas Supply Condensate Drain Line Pipe Temperature and Pressure Relief (T&P) Cold Water Supply Valve to Open Drain Building Circulation Pump Building Hot Water Return Line (Optional) When connecting multiple units, balancing valves, equivalent piping, pressure gauges, and temperature gauges are to be used as necessary to ensure proper flow between units.
Page 37 WARNING • Do not use an extension cord or adapter plug with this appliance. • The water heater must be electrically grounded in accordance with local codes and ordinances or, in the absence of local codes, in accordance with the National Electrical Code, ANSI/NFPA No. 70. •...
Page 38: Controller Diagnostics
The digital controller maintains communication between the tank and tankless via the tankless communication cable to effectively control the tank temperature based on the selected temperature on the tankless unit. The digital controller will energize (120V) the pump when the tank temperature drops. When the tank temperature returns to the selected set temperature, the digital controller will de-energize the pump and remain in standby until the tank temperature drops again.
Page 39: Replacement Parts
❷ ❶ ❺ ❻ ❼ ❾ ❹ ❸ ITEM NO. PART # DESCRIPTION CU199IN/CU199IP Rinnai SENSEI Tankless Water Heater 109000478 TRW02 Frame 109000738 Left Frame Base 109000739 Right Frame Base 107000382 1 in. X 36 in. Water Flex Line 107000524 1 in.
Page 40 ⓰ ITEM PART # DESCRIPTION 107000432 119-Gallon Tank ❻ 107000377 Grundfos UPS26-150(S)F Pump ❹ ❺ 105000284 4-Unit Electrical Assembly Temperature and Pressure (T&P) ❶ 107000437 Relief Valve 107000438 1 in. Street Elbow NPT ❸ 107000440 1 in. X 3 in. Dielectric Nipple 107000351 Isolation Flange 107000352 1-1/2 in.
Page 41 Replacement Parts for Vertical Models Item No. Part Number Description CU160iN/CU160iP Rinnai SENSEI Tankless Wa- CU199iN/CU199iP ter Heater ❶ 107000432 119 Gallon Tank 107000457 119 Gallon ASME Tank (for ASME models only) 107000377 Grundfos UPS26-150(S)F 105000284 4-Unit Electrical Assembly 107000437...
Page 42: What Is Covered
Rinnai’s sole discretion. The warranty claim for product parts and labor may be denied if a component or product returned to Rinnai is found to be free of defects in material or workmanship; damaged by improper installation, use or operation; or damaged during return shipping.
Page 43: What Is Not Covered
Limitation on Warranties No one is authorized to make any other warranties on behalf of Rinnai America Corporation. Except as expressly provided herein, there are no other warranties, expressed or implied, including, but not limited to...
Page 44 H-Series Demand Duo™ 2 Installation and Operation Manual...

This manual is also suitable for:

Demand duo 2 h series Demand duo chs398100hip Demand duo chs320100hvin Demand duo chs320100hvip Demand duo chs398100hvin Demand duo chs398100hvip ... Show all

Rinnai Demand Duo CHS398100HiN Installation And Operation Manual

Quick Links

Need help?

Questions and answers

Related Manuals for Rinnai Demand Duo CHS398100HiN

Summary of Contents for Rinnai Demand Duo CHS398100HiN

This manual is also suitable for:

Table of Contents