Submittal Sheet

Engineering
Submittal
Sheet
Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances |
BTC 744008301 D | 10.2014
Bosch Thermotechnology Corp.
Londonderry, NH • Ft. Lauderdale, FL
Tel: [phone] Fax: [phone] www.bosch-climate.us
830ES
Tankless Water Heater
1 of 7
Engineering Specifi cations
Water heater shall be a Model Therm 830 ES. Plant shall consist
of ___Model Therm 830 ES NG/LP tankless water heaters as
manufactured by Bosch Thermotechnology Corp. Heater shall
be CSA/ANSI Z21.10.3 listed. Heater shall have an input of 175
MBH with a gross output of 147 MBH when fi red with natural gas.
Unit shall operate with a minimum of 82% ANSI Z-21 effi ciency.
Tankless water heater shall have a recovery of 225 gallons per
hour at a 77°F temperature rise. Tankless water heater shall have
Low NOx emissions and is 2012 SCAQMD NOx certifi ed to rule
1146.2.
CONSTRUCTION
Water heater shall be gas fi red, tankless design with a modulating
power burner and negative pressure gas valve. Burner shall be
capable of 9:1 turndown of fi ring, without loss of combustion
effi ciency. Primary heat exchanger/combustion chamber shall
incorporate a multi pass copper tube and fi n design with internal
turbulators. Heat exchanger shall be rated for maximum working
pressure not less than 150 psig. Water heater shall be equipped
with a modulating water valve to improve temperature stability.
Exhaust outlet connector shall be of corrosion resistant metal,
with a 3” diameter fl ue connection.
The water heater control system shall be a single printed circuit
board in water-resistant plastic enclosure. The entire system
shall be Underwriters Laboratories approved.
The control system shall contain: embedded control board
incorporating LCD display to read temperature, and tactile
buttons for output power, temperature, and programming
control; CPU board which houses all control functions; power
transformer; ignition spark module; and unique connections
for each sensor or component. The control board shall be
fi eld replaceable. The combustion safeguard/fl ame monitoring
system shall utilize spark ignition and a rectifi cation type fl ame
sensor. The control panel hardware shall support wireless
remote communications if the wireless module is installed.
The controls shall include extensive self-diagnostic capabilities
that incorporate a minimum of 18 separate fault codes and 8
programmable system categories.
Overview and Certifi cations
Massachusetts
Plumbing Board
Approved
U
P
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LOW-LEAD
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US
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