Specification

Engineering
Submittal
Sheet
Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances | BTC 721008304 A | 12.2011
Bosch Thermotechnology Corporation
Londonderry, NH • Ft. Lauderdale, FL • Irvine, CA
Tel: [phone] Fax: [phone] www.bosch-climate.us
TRONIC
US3 / US6 / US7 / US9
Electric Tankless Water Heaters
1 of 4
Engineering Specifi cations
Water heater shall be a Model TRONIC US3, US6, US7, or US9.
Installation shall consist of ___Model TRONIC US9
electric tankless water heaters as distributed by Bosch
Thermotechnology Corp. with a thermal effi ciency of 99%.
Supply voltage shall be 240VAC (208VAC) with a maximum
output of 9.5kW in high stage and 4.75kW in low stage.
Minimum fl ow rate shall be 0.75gpm
Installation shall consist of ___Model TRONIC US6
electric tankless water heaters as distributed by Bosch
Thermotechnology Corp. with a thermal effi ciency of 99%.
Supply voltage shall be 277VAC with a maximum output of
6.0kW. Minimum fl ow rate shall be 0.5gpm
Installation shall consist of ___Model TRONIC US3
electric tankless water heaters as distributed by Bosch
Thermotechnology Corp. with a thermal effi ciency of 99%.
Supply voltage shall be 110-120VAC with a maximum output of
3.4kW in high stage and 3.0kW in low stage. Minimum fl ow rate
shall be 0.5gpm
Installation shall consist of ___Model TRONIC US7
electric tankless water heaters as distributed by Bosch
Thermotechnology Corp. with a thermal effi ciency of 99%.
Supply voltage shall be 240VAC (208VAC) with a maximum
output of 7.2kW in high stage and 5.4kW in low stage.
Minimum fl ow rate shall be 0.75gpm
The tankless water heaters shall be UL listed for the US and
Canada and UPC certifi ed.
CONSTRUCTION
Water heater shall be electricity powered with compact
tankless design. Primary heat exchanger shall be made from
solid copper tubing, elements shall be copper-sheathed
and unit shall be protected by a tough plastic housing. Heat
exchanger shall be rated for maximum working pressure not
less than 150 psig. Water heater shall be equipped with a fl ow
switch. Water connections for inlet and outlet shall be ½” NPT
male.
The internal controls shall contain a power selector and a high
temperature safety cut-out with manual reset.
Dimensions
4¼"
4"
½"
6½"
3"
12¾"