Bosch 715ES Referenzhandbuch

Models: 715ES, C800ES, C920ES, C920ESC, 2400ES, 2700ES

Descaling the heat exchanger

Service Bulletin G3-13

Introduction

Periodic descaling may be necessary in areas where the water

supply is highly mineralized. Scale build up in the heat

exchanger may result in reduced ow rates, error codes and boil-

ing sounds in the heat exchanger.

Tools needed:

Various plumbing wrenches

5 gallon bucket for descaling solution

Small circulator or pump

3 Hoses for circulating

Filter for descaling solution

Descaling procedure

1. Clear error code (if displayed) by pressing the reset button.

2. Press On/Off button to "Off".

3. Disconnect electrical supply from the water heater.

4. Shut off the water supply to the water heater using (installer

supplied) isolation or shutoff valves.

5. Open hot water taps to drain and relieve pressure from the

plumbing system.

6. Drain water by disconnecting the inlet and outlet water connec-

tions from the heater.

7. Connect a hose (A) from the outlet of the circulating pump

(installer supplied) to the inlet water tting on the water heater.

(Fig. 1)

8. Connect another hose (B) to the water outlet fitting on the water

heater. Route the other end of this hose into a descaling reser-

voior or bucket. (Fig. 1)

9. Using a 3rd hose (C) from the descaling reservoir, connect to the

inlet side of the circulator/pump. Install a filter on the end of

the hose in the descaling reservoir. (Fig. 1)

Figure 1

10. Make sure all connections are 'hand tight'.

11. Fill reservoir/bucket with descaling solution so both hoses inside

are submersed. We recommend straight white vinegar. If using

a commercial descalant, refer to manufacturer‘s instructions for

proper dilution ratio with water.

12. Operate the circulating pump.

13. Make sure there are no leaks and the solution is owing from the

descaling reservoir, through the heater and returning to the

reservoir.

Data subject to change without notice | Printed in the USA | BTC710002307 A | 01.2009 Bosch Thermotechnology Corp.

Service bulletin

18 | G3-13 | 715ES, C800ES, C920ES, C920ESC, 2400ES, 2700ES

Bosch Thermotechnology Corp.

50 Wentworth Avenue

Londonderry, NH 03053

Tel: 1-866-642-3198

Fax: 1-603-584-1681

www.boschhotwater.com

14. Run solution through the heater until the solution returning to

the descaling reservoir/bucket comes out clear. Changing to a

fresh solution may be necessary during this process.

15. Properly discard of dirty descaling solution. Disconnect lines A

and C (Fig. 1). Reconnect cold water supply to the water heater.

16. Open cold supply shutoff valve to ush water heater with clean

water. Allow enough water to ow through the heater to

properly ush it. Filling the 5 gallon descaling bucket once

should be sufcient.

17. Close cold water shutoff valve and disconnect line B (Fig. 1).

Reconnect hot water line to the water heater.

18. Plug in power cord and press On/Off button to "On".

19. Open water shutoff valves, and return water heater to service.

Water Quality

Water quality can have an impact on appliance longevity and may

void the manufacturer’s warranty.

 For water analysis data, call your local water department. If on a

well, have the well water analyzed periodically. If water quality

exceeds one or more of the values specied in Figure 2, Bosch

recommends consulting a local plumber about installing a water

conditioner or softener.

 If the tankless water heater is operating in applications where

the outlet temperature exceeds 140°F, a water softening system

is strongly recommended. The higher the set temperature is on

the appliance, the greater the risk for scale/mineral deposits.

Damage from scale/mineral deposits is not covered under

warranty. Refer to manufacturer’s limited warranty.

Figure 2

Description Max. Levels

pH pH 6.5 - 8.5

TDS (total Dissolved

Solids) mg/l or ppm 500

Total hardness gpg or ppm 100

(6 gpg)

Aluminum mg/l or ppm 2.0

Chlorides mg/l or ppm 250

Copper mg/l or ppm 1.0

Iron mg/l or ppm 0.3

Manganese mg/l or ppm 0.05

Zinc mg/l or ppm 5.0

Andere Handbücher für 715ES

Dieses Handbuch passt für folgende Modelle

Andere Bosch Kessel Handbücher

Bosch

Bosch Worcester 240 Combi OF Bedienungsanleitung

Bosch

Bosch Greenstar Series Betriebsanleitung

Bosch

Bosch Condens 2000 W Bedienungsanleitung

Bosch

Bosch W 500-1000-5 Series Bedienungsanleitung

Bosch

Bosch TR1000K Bedienungsanleitung

Bosch

Bosch 30" Single Wall Oven Bedienungsanleitung

Bosch

Bosch Worchester GREENSTAR ZWB 7-27 HE combi Benutzerhandbuch

Bosch

Bosch SSB1000 SA Bedienungsanleitung

Bosch

Bosch TWK7101 Bedienungsanleitung

Bosch

Bosch Uni Condens 8000 F UC8000F Bedienungsanleitung

Bosch

Bosch WORCESTER Greenstar Heatslave II 12/18 Benutzerhandbuch

Bosch

Bosch Worcester Danesmoor Utility Regular ErP+... Benutzerhandbuch

Bosch

Bosch Worcester GREENSTAR HEATSLAVE II EXTERNAL... Benutzerhandbuch

Bosch

Bosch WORCESTER benchmark Greenstar 24i Bedienungsanleitung

Bosch

Bosch Worcester Greenstar Danesmoor 12/18 Benutzerhandbuch

Bosch

Bosch GC 7000 WP Bedienungsanleitung

Bosch

Bosch Buderus SSB Gebrauchs- und Wartungshandbuch

Bosch

Bosch Greenstar Camray Utility 12/18 Bedienungsanleitung

Bosch

Bosch Stora Kurzanleitung

Bosch

Bosch ZBR16-3A Bedienungsanleitung

Bosch

Bosch ZBR16-3A Kurzanleitung

Bosch

Bosch Uni 5000F US 207 Bedienungsanleitung

Bosch

Bosch Singular 4000 Bedienungsanleitung

Bosch

Bosch Worcester Danesmoor 12/14 Benutzerhandbuch

Beliebte Kessel Handbücher anderer Marken

Vaillant

Vaillant uniSTOR VIH SW GB 500 BES Bedienungsanleitung

Radijator

Radijator BIO max 23.1 Bedienungsanleitung

Brunner

Brunner BSV 20 Bedienungsanleitung

Buderus

Buderus Logamax GB062-24 KDE H V2 Bedienungsanleitung

Potterton

Potterton 50e Datenblatt

UTICA BOILERS

UTICA BOILERS TriFire Bedienungsanleitung

Joannes

Joannes LADY Series Handbuch

ECR International

ECR International UB90-125 Gebrauchsanweisung

Froling

Froling FHG Turbo 3000 Bedienungsanleitung

Froling

Froling P4 Pellet 8 - 105 Bedienungsanleitung

U.S. Boiler Company

U.S. Boiler Company K2 Bedienungsanleitung

Henrad

Henrad C95 FF Bedienungsanleitung

NeOvo

NeOvo EcoNox EF 36 Bedienungsanleitung

Potterton

Potterton PROMAX SL 12 Bedienungsanleitung

Eco Hometec

Eco Hometec EC 25 COMPACT Bedienungsanleitung

Viessmann

Viessmann VITODENS 200 Leitfaden

Baxi

Baxi Prime 1.24 Bedienungsanleitung

REXNOVA

REXNOVA ISA 20 BITHERMAL Bedienungsanleitung