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8.1  Customer service

In case of problems that cannot be resolved 

with the aid of the troubleshooting guide in 

this installation manual, contact either:

8. WARRANTY CONDITIONS 

 - applies to UK only

9. REMOVING THE PRODUCT

9.1 Removal

A) Disconnect the power supply.

B) Shut off incoming cold water supply.

C) Empty the product of water – see section 4.4.

D) Disconnect all pipes.

E)  The product can now be removed.

1. Scope

The Manufacturer (hereinafter called MAN) warrants for 2 years 

from the date of purchase, that the Product will: i) conform to MAN 

specification, ii) be free from defects in materials and workmanship, 

subject  to  conditions  below.  All  components  carry  a  2-year 

warranty. 

The warranty is voluntarily extended by MAN to 25 years for the 

stainless steel inner tank. This extended warranty only applies to 

Products  purchased  by  a  consumer,  that  has  been  installed  for 

private use and that has been distributed by MAN or by a distributor 

where the Products have been originally sold by MAN.

The extended warranty does not apply to Products purchased by 

commercial  entities  or  for  Products  that  have  been  installed  for 

commercial  use.  These  shall  be  subject  only  to  the  mandatory 

provisions of the law. The conditions and limitations set out below 

shall apply.

2. Coverage

If a defect arises and a valid claim is received within the statutory 

warranty period, at its option and to the extent permitted by law, 

MAN shall either; i) repair the defect, or; ii) replace the product with 

a product that is identical or similar in function, or; iii) refund the 

purchase price.

If a defect arises and a valid claim is received after the statutory 

warranty  period  has  expired,  but  within  the  extended  warranty 

period, MAN will supply a product that is identical or similar in 

function. MAN will in such cases not cover any other associated 

costs. In addition, for every year after the statutory warranty period, 

the claimant must contribute 4 % of the list price of the cylinder in 

question to MAN.

Any  exchanged  Product  or  component  will  become  the  legal 

property of MAN. Any valid claim or service does not extend the 

original warranty. The replacement Product or part does not carry 

a new warranty.

3. Conditions

The Product is manufactured to suit most public water supplies. 

However, there are certain water chemistries (outlined below) that 

can have a detrimental effect on the Product and its life expectancy. 

If there are uncertainties regarding water quality, the local water 

supply authority can supply the necessary data.

The warranty applies only if the conditions set out below are met 

in full:

• 

The Product has been installed by a professional installer, in 

accordance with the instructions in the installation manual 

and all relevant Codes of Practice and Regulations in force at 

the time of installation.

• 

The Product has not been modified in any way, tampered 

with or subjected to misuse and no factory fitted parts have 

been removed for unauthorized repair or replacement. 

• 

The Product has only been connected to a domestic mains 

water  supply  in  compliance  with  the  European  Drinking 

Water Directive EN 98/83 EC, or latest version. The water 

should  not  be  aggressive,  i.e.  the  water  chemistry  shall 

comply with the following:

 

- Chloride 

 

 

< 250 mg / L

 

- Electric Conductivity (EC) @25°C 

< 750 uS / cm

 

 -Saturation Index (LSI) @80°C   

> - 1,0 / < 0,8

 

- pH level 

 

 

> 6,0 / < 9,5

• 

The immersion heater has not been exposed to hardness 

levels exceeding 5°dH (180 ppm CaCO3). A water softener 

is recommended in such cases.

• 

Any  disinfection  has  been  carried  out  without  affecting 

the  Product  in  any  way  whatsoever.  The  Product  shall  be 

isolated from any system chlorination.

• 

The  Product  has  been  in  regular  use  from  the  date  of 

installation. If the Product is not intended to be used for 60 

days or more, it must be drained.

• 

The  immersion  heater  element  must  be  removed  for 

inspection  on  service  after  5  years.  The  threads  must  be 

checked  for  corrosion.  If  signs  of  corrosion  are  evident, 

the  element  must  be  replaced.  Subsequently  the  element 

must  be  removed  and  examined  every  3  years.  Failure  to 

do so in areas of aggressive water may result in the element 

separating from the cylinder with consequential escape of 

water.

• 

Service  and/or  repair  shall  be  done  according  to  the 

installation manual and all relevant codes of practice. Any 

replacement parts used shall be original MAN spare parts.

• 

The  Service  record  /  Benchmark  logbook  has  been 

completed and updated after each annual service. Invoices 

should be kept as proof of service.

• 

The Commissioning Checklist / Benchmark certificate has 

been completed at the time of installation.

• 

Any  third-party  costs  associated  with  any  claim  has  been 

authorized in advance by MAN in writing. 

• 

The purchase invoice and/or installation invoice, a water 

sample as well as the defective product is made available to 

MAN upon request. 

Failure  to  follow  these  instructions  and  conditions  may  result  in 

product failure, and water escaping from the Product.

4. Limitations

The warranty does not cover:

• 

Any fault or costs arising from incorrect installation, incorrect 

application, lack of regular maintenance in accordance with 

the  installation  manual,  neglect,  accidental  or  malicious 

damage,  misuse,  any  alteration,  tampering  or  repair 

carried  out  by  a  non-professional,  any  fault  arising  from 

the  tampering  with  or  removal  of  any  factory  fitted  safety 

components or measures.

• 

Any consequential damage or any indirect loss caused by 

any failure or malfunction of the Product whatsoever.

• 

Any pipework or any equipment connected to the Product.

• 

The effects of frost, lightning, voltage variation, lack of water, 

dry boiling, excess pressure or chlorination procedures.

• 

The effects of stagnant (de-aerated) water if the Product has 

been left unused for more than 60 days consecutively. 

• 

Damage caused during transportation. Buyer shall give the 

carrier notice of such damage.

• 

Costs arising if the Product is not immediately accessible for 

servicing.

These warranties do not affect the Buyer’s statutory rights.

9.2 Returns scheme

This product is recyclable and should be taken 

to the environmental recycling centre. If the 

product is to be replaced with a new one, the 

installer can take the old cylinder away for re-

cycling.

A) The installer who supplied the product. 

B)  The manufacturer (get manufacturer con-

tact details from installer).

Summary of Contents for 80800277

Page 1: ...146249 00 01 2022 Optima Geocoil OGC 300 l EN SAFETY INFORMATION O M INFORMATION INSTALLATION MANUAL TDS TECHNICAL DATA SHEET ...

Page 2: ... 5 Requirements for installation location 8 3 6 Pipe installation 8 3 7 Electrical installation 11 4 Commissioning 13 4 1 Commissioning and filling 13 4 2 Turning on the power 13 4 3 Temperature adjustment of tap water 13 4 4 Control points 13 4 5 Draining 13 4 6 System flushing 14 4 7 Handover to end user 14 5 User guide safety and servicing 15 5 1 Safety cut out 15 5 2 Settings 15 5 3 Intermitte...

Page 3: ... the safety valves must NOT be sealed or plugged Discharge must comply with current building regulations The electrical supply to the heater shall be done in accordance with current local regula tions and best practice by a qualified electrician The product is intended for permanent supply The mains power supply cable shall withstand 90 C A strain reliever must be fitted supplied The product shall...

Page 4: ...12897 2016 Safety standard EN 60335 2 21 Welding standard EN ISO 3834 2 The manufacturer is certified for Quality ISO 9001 Environment ISO 14001 Work environment ISO 45001 2 2 Intended use Optima OGC is designed to deliver hot water and hydronic heat from an electrical and or external energy source The OGC 300 can be used with a heat pump fitted with a three way valve The lower part of the cylinde...

Page 5: ...ylinder rated pressure MPa Bar 1 10 Maximum design pressure of lower cylinder rated pressure MPa Bar 0 20 2 5 Operating pressure of cylinder upper MPa Bar 3 Max operating temperature of cylinder C 70 Expansion vessel capacity L 18 Hydraulic connections Buffer connections Inch BSP female 1 Cold water Inch BSP female 3 4 Hot water Inch BSP female 3 4 Immersion heater Inch BSP female 1 1 4 Safety val...

Page 6: ... 2 1 8 5 2 1 9 10 4 4 3 6 7 3 2 1 G3 Inlet Group kit The product is supplied with a G3 Inlet Group kit The kit contains the components shown in table below and illustration right No Description Dim A Cold water supply ø22 mm B Balanced cold supply optional ø22 mm C Expansion vessel 1 2 D Multibloc valve 3 4 E Discharge pipework 15 22 mm F Drain cock not supplied N A G Cold water inlet 3 4 int H Tu...

Page 7: ...3 4 int thread Coil connection lower F 3 4 int thread Coil connection upper G 1 2 Safety valve lower cylinder H 3 4 int thread Cold water inlet upper cylinder I ø15 mm T P relief valve upper cylinder J ø6 ø8 mm Sensor slot K 3 4 int thread Hot water outlet L 3 4 int thread Anode A E B D C F I J K L J H G ø 30 45 15 3 4 1 Delivery The product should be transported carefully as shown with packaging ...

Page 8: ...e installation The product is designed to be permanently connected to the mains water supply Ap proved pipes of the correct size should be used for installation The relevant standards and regulations must be followed 3 6 1 Incoming water pressure The efficiency of the product depends on the incoming cold water pressure The water pressure should be min 2 bar and max 6 bar throughout the day Excessi...

Page 9: ...volume A Approved pipes of a suitable dimension can be fitted to coil connections 3 and 4 B Approved pipes of a suitable dimension can be fitted to buffer volume connections 5 Unused connections must be properly plugged Use a suitable thread sealant with all connec tions to avoid leaks HW outlet CW inlet Space heating High output heat source 3 6 4 Pipe fitting schematics Suggested pipe fitting lay...

Page 10: ...sel shall be filled first Discharge must comply with current building regulations 3 6 6 Temperature sensor installation The product is equipped with two temperature sensor brackets which allows installation of 6 or 8 mm temperature sensors To install the temperature sensor follow the instructions below 1 Remove temperature sensor bracket A from tank body by gripping it and pulling straight out 2 I...

Page 11: ...s connected to the terminal on the heating ele ment hexagonal brass D Internal wires from the element to the ther mostat are factory fitted and connected to point 4 on the safety thermostat and point 2 on the work thermostat See illustration right 3 7 1 Electrical components Component Note Safety cut out upper lower 85 C thermal cut out Safety thermostat upper box 40 70 C adjustable Work thermosta...

Page 12: ...stalled by an authorised electrician Components for disconnection must be included in the fixed electrical installation in accordance with applicable standards and regulations Mains cable should withstand 90 C continuously A strain reliever must be fitted supplied CAUTION The product shall have a clearance for servicing of 400 mm in front of the electric junction box covers 100 mm over the highest...

Page 13: ...ower can be switched on Turn on power switch circuit breaker 4 3 Temperature adjustment of tap water The outgoing hot water temperature from the product to the taps will be the same as the set temperature of the thermostat For tempera ture adjustment see section 5 1 1 Since the water temperature in the product can be up to 70 C it is strongly recommended to include a mixer valve in the system to a...

Page 14: ...ord Log Book at the back of this manual Hand this installation manual over to the end user that the water in the vessel can be very hot take necessary precautions After draining close drain cock Close all open taps The vessel must be filled with water before pow er is turned on see pt 4 1 4 6 System flushing System flushing will not be necessary under normal circumstances as the line strainer will...

Page 15: ... the temperature of the water inside the vessel Increasing the temperature will result in a higher available hot water volume The outgoing hot water temperature from the product to the taps will be the same as the set temperature of the thermostat For temperature adjustment see pt 5 2 Since the water temperature in the product can be up to 70 C it is strongly recommended to in clude a mixer valve ...

Page 16: ...ylinder should be serviced annually as below and logbook should be updated in order to vali date warranty Logbook and service records act as warranty document For terms of warranty see Service logbook at rear of manual 5 7 Service procedure The following maintenance work has to be carried out annually by a competent person 1 Inspection of pressure temperature relief valve and expansion relief valv...

Page 17: ...withstanding high temperature discharges of water and 3 m from any plastics guttering system that would collect such discharges tundish visible Where a single common discharge pipe serves more than one system it should be at least one pipe size larger than the largest individual dis charge pipe D2 to be connected For further information contact your Building Control Office Valve Outlet size Minimu...

Page 18: ... installer No hot water Power supply interrupted Verify that the fuse is on the plug is plugged in to the wall contact the earth breaker has not tripped Thermostat has cut out Press the RESET button on the safety thermostat see User guide Heating element is defective Replace heating element Contact auth installer Leak in hot water pipe Verify as follows a close the mixer valve b wait 2 3 hours c f...

Page 19: ... The pressure in the heating sys tem is too high Check the system pressure Normal operating pressure is 1 2 bar Contact auth Installer when needed The valve is defective Replace the valve Contact auth installer The heating circuit has to be refilled frequently Leak in the heating system Check all pipe couplings Turn off the power sup ply remove the lid on the junction box in the lower cylinder and...

Page 20: ...the European Drinking Water Directive EN 98 83 EC or latest version The water should not be aggressive i e the water chemistry shall comply with the following Chloride 250 mg L Electric Conductivity EC 25 C 750 uS cm Saturation Index LSI 80 C 1 0 0 8 pH level 6 0 9 5 The immersion heater has not been exposed to hardness levels exceeding 5 dH 180 ppm CaCO3 A water softener is recommended in such ca...

Page 21: ...ith the appropriate Building Regulations 3 Failure to install and commission this appliance to the manufacturer s instructions may invalidate the guarantee The above does not affect your statutory rights For full details on the HWA charter please visit http www hotwater org uk HEATING AND HOTWATER INFORMATION COUNCIL IT IS THE RESPONSIBILITY OF THE INSTALLER TO COMPLETE THIS LOG BOOK AND PASS IT O...

Page 22: ...EER IF DIFFERENT NAME DATE ADDRESS TEL No REGISTERED OPERATIVE ID CARD No IF APPLICABLE REGISTRATION DETAILS IT IS THE RESPONSIBILITY OF THE INSTALLER TO COMPLETE THIS LOGBOOK AND PASS IT ON TO THE CUSTOMER FAILURE TO DO SO MAY INVALIDATE THE CYLINDER GUARANTEE APPLIANCE TIME CONTROL DETAILS MANUFACTURER MODEL CAPACITY TYPE TIME CONTROL UNVENTED PROGRAMMER litres MANUFACTURE date TIME SWITCH or ...

Page 23: ...WHAT IS THE PRESSURE REDUCING VALVE SETTING IF FITTED WHERE IS OPERATING PRESSURE REDUCING VALVE SITUATED NO YES NO bar HAS THE EXPANSION VESSEL OR INTERNAL AIR SPACE BEEN CHECKED YES NO WHAT IS THE HOT WATER TEMPERATURE AT THE NEAREST OUTLET C bar ALL PRODUCTS YES DOES THE HOT WATER SYSTEM COMPLY WITH THE APPROPRIATE BUILDING REGULATIONS HAS THE SYSTEM BEEN INSTALLED AND COMMISSIONED IN ACCORDANC...

Page 24: ...AME TEL No COMMENTS SIGNATURE DATE ENGINEER NAME SERVICE 9 COMPANY NAME TEL No COMMENTS SIGNATURE DATE ENGINEER NAME SERVICE 2 COMPANY NAME TEL No COMMENTS SIGNATURE DATE ENGINEER NAME SERVICE 4 COMPANY NAME TEL No COMMENTS SIGNATURE DATE ENGINEER NAME SERVICE 6 COMPANY NAME TEL No COMMENTS SIGNATURE DATE ENGINEER NAME SERVICE 8 COMPANY NAME TEL No COMMENTS SIGNATURE DATE ENGINEER NAME SERVICE 10 ...

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