Bosch C1050ES User manual

6720680201-00.1US
Installation Instructions
High Temperature kit
Models: C1050ES, 940ESO, 940ES, 830ES
Warning: This kit shall be installed by a qualified
service agency in accordance with these
instructions and all applicable codes and
requirements of the authorities having jurisdiction.
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Installation
1 Installation
1.1 Tools needed:
• Phillips head screw driver
• Needle-nosed pliers.
1.2 Preparation
BPush power button to “OFF” and unplug power cord.
BLoosen two Phillips head screws on bottom rear of
front cover. Pull cover bottom outwards then lift
cover upwards to remove.
1.3 Removing control unit
BRemove three Phillips screws on front of control unit.
(Fig. 1, pos.1).
BTurn control unit to expose the rear. (Fig. 2, pos. 2).
Fig. 1 Control unit front
BRemove rear cover from control unit to expose circuit
board electrical connections. (Fig. 2).
Fig. 2 Control unit rear (wiring not shown for clarity
purposes)
Fig. 3
i
Note: For commercial applications the
heat exchanger warranty is 2 years, from
date of original installation and operation.
For more details consult the water
heater’s installation manual for warranty
period.
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Note: Avoid touching printed circuit board
as static discharge may damage circuitry.
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1
1
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6 720 645 518
Installation
3
TEMPERATURE SETTINGS
Fig. 4
BReinstall the rear cover.
BReinstall the control unit securing the 3 Philips head
screws.
BPlug in power cord.
To memorize the temperature:
BPower on the appliance by pressing the On/Off
button.
Fig. 5
To select hot water temperature:
BPress the button in order to reach temperatures
above 140°F (71°C).
Fig. 6
BPress and hold the program button for 5 seconds to
memorize selected temperature.
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Insert jumpers on JP7 and JP8
connections on control board. (Fig. 4).
Temperature range
Jumper ON OFF
(default)
JP7 + JP8
38°C - 84°C 38°C - 60°C
100°F - 184°F 100°F - 140°F
Table 1
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For applications where the hot water is
recirculated through the heater, see
Technical Service Bulletin AP-03 Direct
Recirculation, to avoid damage in internal
components.
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Replacement Parts available from:
Bosch Termotecnologia SA
Estrada de Cacia
3800 - 533 Cacia - PORTUGAL
Recycled paper © 2010 Bosch Thermotechnology Corp.,
Londonderry, NH
BOSCH THERMOTECHNOLOGY
CORP.
50 Wentworth Avenue
Londonderry, NH 03053
Tel. [phone]
www.boschpro.com
6720645518