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Excellence comes as standard

 

6 720 610 577 GB (01.07) 

 

Excellence comes as standard

 

Thank you for purchasing a Worcester Greenstar condensing 
appliance.
The Worcester Greenstar Series has been developed by the 
Bosch Group and the strictest quality control standards are 
demanded throughout every stage of production.
Indeed, the Bosch Group have led the field in innovative appli-
ance design and performance for many years.
The result is that your new Greenstar appliance offers you the very 
best of everything – quality, efficiency, economical running costs, 
proven reliability and value for money.
What’s more, you also have the assurance of our no nonsense 
2 year parts and labour guarantee.
And it’s backed up by Worcester Care Call a complete mainte-
nance scheme to keep your boiler operating at peak condition and 
efficiency.
No wonder that more and more people are agreeing that when it 
is gas, it has to be a Worcester Condensing appliance.

 

Benchmark

 

The “Benchmark” initiative is the new code of practice to encour-
age the correct installation, commissioning and servicing of 
domestic central heating boilers and system equipment.

The “log-book” is a vital document that must be completed by the 
installer at the time of installation. It confirms that the boiler has 
been installed and commissioned according to the manufacturers 
instructions. 

Without the completion of the “log-book”, manufacturers may 
refuse to respond to a call–out from a householder, who will be 
advised that he or she must call back the installer, who has not ful-
filled his obligations to record the information required by the ini-
tiative.

Summary of Contents for ZB 7-27 HE

Page 1: ...nd Customer Care Guide Greenstar HE combi Condensing boiler Greenstar HE system Condensing boiler 6 720 610 577 00 10 ZWB 7 27 HE combi GC Number 47 311 55 ZB 7 27 HE system GC Number 41 311 49 6 720...

Page 2: ...3 4 Controlling Central Heating 13 3 5 Combination Boilers Setting the Hot Water Temperature 14 3 6 Summer Mode Hot Water Only Combi Appliances 15 3 7 Frost protection Combi Appliances 15 3 8 Fault C...

Page 3: ...up by Worcester Care Call a complete mainte nance scheme to keep your boiler operating at peak condition and efficiency No wonder that more and more people are agreeing that when it is gas it has to...

Page 4: ...ors and windows y Do not operate any electrical switches y Do not smoke y Extinguish any naked flames y Call your gas company If you smell fumes from the appliance y Switch off appliance y Open window...

Page 5: ...no potential hazard due to the appliance being electri cally unsafe y There are no substances used in the construction that are a potential hazard in relation to the COSHH Regulations Con trol of Sub...

Page 6: ...being heated at an even rate If the top of a radiator is at a lower temperature than the bottom then it should be vented by releasing air through the venting screw at the top of the radiator Ask your...

Page 7: ...e is fitted to all the radia tors except one usually the bathroom radiator They should con form to the requirements of BS2767 10 Showers bidets taps and mixing valves Combination Boilers Standard hot...

Page 8: ...Installation of a scale inhibitor assembly should be in accordance with the requirements of the local water com pany An isolating valve should be fitted to allow for servicing Alternatively the maximu...

Page 9: ...ow and return 171 Hot water 172 Gas isolation valve open 173 Cold water inlet 295 Identification sticker 310 Hot water temperature control combi 317 Display 363 Indicator lamp for burner on 364 Indica...

Page 10: ...e with direction of flow the cock is open Central heating system valves 170 y Using a spanner turn square nut until groove is in line with direction of flow see detail Groove at right angles to direct...

Page 11: ...nter is below 1 bar when the system is cold top up the system with water until the pointer is 1 bar Your installer will have shown you how to do this y The maximum operating pressure of 2 5 bar at max...

Page 12: ...that the condensation trap is filled after the appliance has been installed or after the appliance has been out of use for a long period For that reason the appli ance remains at minimum heating outp...

Page 13: ...ature heating setting E approx 75 C Max setting 88 C When the burner is lit the red indicator lamp is illuminated 3 4 Controlling Central Heating y Set room thermostat to the desired room temperature...

Page 14: ...y pressing and holding the ECO button until the display lights you can switch between Comfort mode and Economy mode Comfort mode button is not lit factory setting The appliance is held constantly at t...

Page 15: ...ing period before hot water is available 3 6 Summer Mode Hot Water Only Combi Appliances With room thermostat y Turn temperature control on the appliance anti clockwise as far as the stop The central...

Page 16: ...ppliance will then start up again and the display will show the central heating flow temperature If the button does not flash y Switch the appliance off and then on again at the master switch The appl...

Page 17: ...hermo static radiator valves The central heating control on the boiler should be set to the max imum rated temperature of the central heating system or to posi tion E when the maximum central heating...

Page 18: ...lt in considerable energy savings For combi appliances The on demand activation using the ECO button makes possi ble the maximum savings of gas and water Now you know how to heat your home economicall...

Page 19: ...k to hand when calling a Service Engineer 6 Maintaining your appliance Your new Worcester Greenstar gas fired appliance represents a long term investment in a reliable high quality product In order to...

Page 20: ...request simply call our local rate number above and your request will be routed to your Regional Service Centre Region Telephone Fax Operating Hours Mon Fr Operating Hours Sat Sc Scotland 08705 256206...

Page 21: ...lled for over 24 months OR Our Field Service Engineer finds no fault with the appliance see NOTE OR The cause of breakdown is misuse or with other parts of your plumbing heating system or with equipme...

Page 22: ...the first 2 year service has been carried out to the satisfaction of Worcester Heat Systems Limited when requested That any product or part thereof returned for servicing under the guarantee any comp...

Page 23: ...vice by establishing a reference and permanent record for your boiler This will not affect your statutory rights in any way Important For your own record Model Serial number See identity label inside...

Page 24: ...e outside temperature control unit to the appropriate setting Hot water temperature ECO button lit Economy mode ECO button not lit Comfort mode Hot water only Fault Condition If the button flashes pre...

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