Bosch 715ES Manuale di riferimento

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

Altri manuali per 715ES

Questo manuale è adatto per i seguenti modelli

Altri manuali Bosch Caldaia

Bosch

Bosch Worcester 24CDi Manuale utente

Bosch

Bosch Worcester Greenstar 24i junior Manuale utente

Bosch

Bosch Worcester GREENSTAR CDi Series Manuale utente

Bosch

Bosch GREENSTAR HEATSLAVE II EXTERNAL 18/25 Manuale utente

Bosch

Bosch Buderus SSB Manuale d'uso e manutenzione

Bosch

Bosch Worcester GB162-50 V2 Guida utente

Bosch

Bosch GREENSTAR HEATSLAVE II EXTERNAL 12/18 Manuale utente

Bosch

Bosch Tronic 1000 T Manuale operativo

Bosch

Bosch Worcester Danesmoor Utility Regular ErP+... Guida utente

Bosch

Bosch WORCESTER benchmark Greenstar 24i Manuale utente

Bosch

Bosch 30" Single Wall Oven Manuale utente

Bosch

Bosch Greenstar combi 100 p Istruzioni operative

Bosch

Bosch ZSB 30-2 A Guida utente

Bosch

Bosch GC7000WP 150 23 Manuale utente

Bosch

Bosch Greenstar 57 Manuale utente

Bosch

Bosch Worcester 240 Combi OF Manuale utente

Bosch

Bosch C950ES Manuale utente

Bosch

Bosch Worcester Greenstar Si Series Manuale utente

Bosch

Bosch Worcester Greenstar Utility ErP+ 32/50 Manuale utente

Bosch

Bosch Uni Condens 8000 F Manuale utente

Bosch

Bosch Worcester 2000 GC2000iW C Series Manuale utente

Bosch

Bosch GC 7000 WP Manuale utente

Bosch

Bosch W 500-5 Series Manuale di istruzioni

Bosch

Bosch Worcester Greenstar 24 Manuale utente

Manuali Caldaia popolari di altre marche

Vaillant

Vaillant uniSTOR VIH SW GB 500 BES Manuale utente

Radijator

Radijator BIO max 23.1 Manuale utente

Brunner

Brunner BSV 20 Manuale utente

Buderus

Buderus Logamax GB062-24 KDE H V2 Manuale utente

Potterton

Potterton 50e Scheda tecnica

UTICA BOILERS

UTICA BOILERS TriFire Manuale utente

Joannes

Joannes LADY Series Manuale

ECR International

ECR International UB90-125 Manuale di istruzioni

Froling

Froling FHG Turbo 3000 Manuale utente

Froling

Froling P4 Pellet 8 - 105 Manuale utente

U.S. Boiler Company

U.S. Boiler Company K2 Manuale utente

Henrad

Henrad C95 FF Manuale utente

NeOvo

NeOvo EcoNox EF 36 Manuale utente

Potterton

Potterton PROMAX SL 12 Manuale utente

Eco Hometec

Eco Hometec EC 25 COMPACT Manuale utente

Viessmann

Viessmann VITODENS 200 Guida

Baxi

Baxi Prime 1.24 Manuale utente

REXNOVA

REXNOVA ISA 20 BITHERMAL Manuale utente