Engineering Submittal Sheet
Bosch Thermotechnology Corp. reserves the right to make changes without notice due
to continuing engineering and technological advances | BTC 723008301 A | 12.2013
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 ES2.5, ES4, ES8
Point-of-Use Electric Mini-Tank Water Heaters
Technical Data
Description Unit ES8 ES4 ES2.5
Part number − 7736500902
7736500901 7736500900
Thermal Effi ciency % 98 98 98
Volts VAC 110 - 120 110 - 120 110 - 120
Amps Ω 12 12 12
Wire Type − Hard Wired Plug-In Plug-In
Tank Volume GAL 7.1 4 2.7
Heating Capacity Watts 1440 1440 1440
Recovery Rate @ 90°F Rise GPH 6.8 6.8 6.8
Temperature Range ° F 65 - 145 65 - 145 65 - 145
Max Operating Pressure psi 150 150 150
Weight lbs 29.5 17.3 15.5
Water Fittings ° F ¾” Male NPT ½" Male NPT ½” Male NPT
Relieve Valve − Included Installed Installed
Certifi cations
−
U
P
C
NSF/ANSI 61
®
3 of 5
Installation Example 1 - Booster Application
Front view
Hot
Cold
M
IN
OF
F
M
A
X
ID
E
A
L
Hot Cold
Water
Heater
Hot
Long pipe run from hot water source to faucet
Instant
hot water
to faucet





