Bosch Greentherm T9800 SEC 199 User Manual

Installation and Operating Instructions
Temperature Modulated with Electronic Ignition Suitable for heating potable water and space heating
(Intended for variable flow applications, indoor use only)
INDOOR RESIDENTIAL AND COMMERCIAL TANKLESS WATER HEATERS
Greentherm T9800 SE 160/199 | SEC 199
WARNING: 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.
6720816815-38.1V
Caution!
Improper installation, adjustment, alteration, service or maintenance can cause
injury or property damage. Refer to this manual. For assistance or additional information
consult a qualified installer, service agency or the gas supplier.
Notice!
Upon completion of the installation, these instructions should be handed to the user of
the appliance for future reference.
160 000/199 000 Btu- Natural Gas | 160 000/199 000 Btu - Liquefied Petroleum (LP) Gas
6 720 816 815 (2018/08) US

Bosch Greentherm T9800 SEC 199 Specifications

General

Type	Tankless
Fuel Type	Natural Gas or Propane
Max. Flow Rate	11.2 GPM
Activation Flow Rate	0.5 GPM
Voltage	120V
Frequency	60 Hz
Maximum BTU	199, 000 BTU/h
Flow Rate	11.2 GPM
Venting Options	Direct Vent
Min. Input (BTU/hr)	15, 000 BTU/hr
Water Connection Size	3/4 inch NPT
Gas Connection Size	3/4 inch NPT
Vent Size	3 inch
Energy Efficiency	ENERGY STAR® certified
Temperature Range	85°F to 140°F

Summary

Key to Symbols and Safety Instructions

Safety Instructions

Provides critical safety guidelines for installation, commissioning, and operation of the appliance.

Safety Information

Appliance Details

General Rules for Safe Operation

Outlines essential rules for the safe installation and operation of the water heater.

Installation Instructions

Venting

Crucial instructions and safety warnings concerning the venting system for exhaust gases.

Vent Specifications

Specifies required vent clearances and maximum allowable pipe lengths for air intake and exhaust.

Connecting the Condensate Water Drain

Instructions for correctly connecting the appliance's condensate drain system.

Gas Piping & Connections

Guidelines for safe and correct gas piping and connection procedures.

Gas Line Sizing Tables for NATURAL GAS

Gas Line Sizing Tables for LP GAS

Water Connections

Instructions for making correct hot and cold water connections to the appliance.

Measuring Gas Pressure

Procedures for measuring and verifying gas supply pressure upon installation.

Electrical Connections

Electrical Power Supply

Requirements and safety warnings for the electrical power supply connection.

Operating Instructions

Safety Before Operating

Critical safety warnings and procedures to follow before turning on the water heater.

Error Code Reset

Temperature Selection

Steps for selecting and adjusting the desired hot water temperature output.

Water Valves Calibration

Gas Type

Maintenance and Service

Annual Maintenance

Outlines the essential inspection and maintenance tasks to be performed yearly.

Troubleshooting

Burner Does Not Ignite When a Hot Water Faucet is Opened

Step-by-step guide to diagnose and resolve issues where the burner fails to ignite.

Water is Too Hot

Water is Not Hot Enough

Low Water Flow/Pressure

Hot Water Temperature Fluctuates at Tap

Noisy Burner/Heater During Operation

Error Codes C1, C2, CF and/or CE

Explains potential causes and solutions for specific error codes related to venting.

Error Codes EA and/or EC

Explains potential causes and solutions for specific error codes related to combustion.

Manifold Gas Pressure

Adjusting Gas/Air Flow

Detailed instructions for adjusting the gas and air mixture for optimal combustion performance.

Problem Solving

Error Code Diagnostics

Comprehensive table detailing error codes, their descriptions, and troubleshooting solutions.

Electrical Diagram

Installer Checklist to be completed by installer upon installation