Specification

ManualsBrandsBosch ManualsPlumbingTronic 3000 US9 Electric Point-Of-Use Tankless Water Heater

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: 1-800-798-8161 Fax: 1-603-965-7581 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"

½"

6½"

12¾"

Summary of content (4 pages)

PAGE 1
TRONIC US3 / US6 / US7 / US9 Electric Tankless Water Heaters Engineering Submittal Sheet Dimensions 6½" ½" 4" 4¼" 12¾" 3" Engineering Specifications 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 efficiency of 99%. Supply voltage shall be 240VAC (208VAC) with a maximum output of 9.5kW in high stage and 4.75kW in low stage.
PAGE 2
Engineering Submittal Sheet TRONIC US3 / US6 / US7 / US9 Electric Tankless Water Heaters Engineering Specifications INSTALLATION All aspects of installation of Water Heater Plant shall be in strict accordance with manufacturer’s instructions. Materials shall conform to all manufacturer’s recommendations including electrical connections and wiring. OPERATION The appliance shall have a high setting with two elements energized and an output and a low setting with one element energized.
PAGE 3
Engineering Submittal Sheet TRONIC US3 / US6 / US7 / US9 Electric Tankless Water Heaters Water Heating Capacity Curve 5 4 Flow Rate 3 (GPM) 2 1 0 10 US9 US6 US3 20 30 40 50 60 70 80 Temperature rise (°F) US7 90 100 110 120 Water Heating Capacity Data * On maximum temperature setting Flow Rate GPM Temperature Rise °F* US3 US6 US7 US9 95 N/A N/A 0.5 N/A 90 N/A N/A 0.5 N/A 75 N/A 0.5 0.7 0.9 65 N/A 0.6 0.8 1.0 55 N/A 0.7 0.9 1.2 45 0.5 0.9 1.1 1.4 35 0.
PAGE 4
Engineering Submittal Sheet TRONIC US3 / US6 / US7 / US9 Electric Tankless Water Heaters Tankless Components 1 2 3 4 Components Legend 14 5 6 13 7 12 8 11 9 10 Outlet 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Mounting hole Heat exchanger tube Thermal cut-out (manual re-set) Heating elements Terminal block Cable rear entry Ground stud Cable clamp Heater backplate Cable bottom entry Flow switch Power selector Cover fixing screw Neon light Inlet 4 of 4 Bosch Thermotechnology Corp.