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Direct Electric
Cylinders
Up to 300L
Quantum Cylinder Range
Installation and User Instructions
Important - This Manual Must be left with the User After Installation!
GDC Group is a licensed member of the Benchmark Scheme which aims to improve the standards of installation and commissioning of domestic heating and hot water systems in the UK and to encourage regular servicing to optimise safety, efficiency and performance.
Benchmark places responsibilities on both manufacturers and installers. The purpose is to ensure that customers are provided with the correct equipment for their needs, that it is installed, commissioned and serviced in accordance with the manufacturer’s instructions by competent persons and that it meets the requirements of the appropriate Building Regulations. The Benchmark Checklist can be used to demonstrate compliance with Building Regulations and should be provided to the customer for future reference.
Installers are required to carry out installation, commissioning and servicing work in accordance with the Benchmark Code of Practice which is available from the
Heating and Hot Water Industry Council who manage and promote the Scheme.
Visit www.centralheating.co.uk for more information.
The HWA Charter requires that all members adhere to the following:
supply fit for purpose products clearly and honestly described supply products that meet, or exceed appropriate standards and building
and water regulations provide pre and post sales technical support provide clear and concise warranty details to customers
For further information on the HWA Charter Membership, please refer to the HWA website www.hotwater.org.uk
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0 Overall View
02 03
05
06
04
01
Figure 1: Overall View of Quantum Direct Electric Cylinder Installation Process
Overall View
1 Contents
Building Regulation G3 Discharge Requirements ........................................ 11
Discharge Pipe D2 .......................................................................... 11
Worked Example ............................................................................ 12
Termination of Discharge Pipe ......................................................... 13
Cold Water Inlet with Inlet Control Group .................................................. 14
Correctly Site the Cylinder ............................................................... 14
Install the Inlet Group .................................................................... 14
Expansion Vessel ........................................................................... 14
Balanced Cold Water Supply ............................................................ 15
Drain Valve ................................................................................... 15
Thermostatic Mixing Valve ............................................................... 15
Pipe Insulation ............................................................................... 15
Discharge Pipes from Safety Devices ........................................................ 15
Discharge Pipe D1 .......................................................................... 15
Discharge Pipe D2 .......................................................................... 16
Tundish......................................................................................... 16
Connection of Secondary Return .............................................................. 21
Initialise System Settings and Communications ......................................... 23
Set Hygiene Mode .......................................................................... 23
Set Communications Mode .............................................................. 23
Set Cylinder Size ............................................................................ 23
RTC Calibration .............................................................................. 23
Set Tariff....................................................................................... 23
Confirmation of Operation ....................................................................... 24
Contents
9 Technical Data and Product Fiche.......................................................... 29
User Interface................................................................................ 33
Home Screen ................................................................................. 33
Setting the Date and Time .............................................................. 33
Setting the Primary and Boost Immersion Heater Temperature ............ 34
Activate and De-activate the Boost Immersion ................................... 34
Accessing Energy and Temperature Information ................................. 34
Accessing and Setting Functions ...................................................... 35
Overall View of User Interface .............................................................. 42
Contents
Precaution: “This appliance can only be used by children aged from 8 years and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understanding the hazards involved.
Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.”
Note: Between the inlet group and the cold water inlet on the cylinder NO isolating device may be fitted, as by doing so important safety devices could be isolated!
It is important to check the pre-charge pressure of the expansion membrane vessel before filling the cylinder.
The pre-charge should be greater than or equal to 3 bar.
It is important that the tundish is positioned away from any electrical components.
Note: electrical
Means for disconnection must be incorporated in the fixed wiring in accordance with the wiring rules.
Before removing the cover from the immersion heater isolate appliance using isolating switch!
Danger of electrical shock! Only use suitable electrically insulated equipment
Important Information
when working inside immersion housing.
Note: The cylinder must be filled with water before switching on the immersion heater. Failure to do so will damage the element and void any guarantee on the product.
The maintenance of this appliance must be carried out by a suitably qualified person only. It is recommended to maintain the unit on an annual basis.
Isolate all electrical supplies from the unit before commencing work.
Danger of electrical shock!
CLEANING
INSTRUCTIONS:
Clean outer cladding of cylinder with a soft cloth dampened with warm water only.
Do not use abrasive or aggressive cleaning materials, such as alcohol or petroleum based solvents, as this may damage the surface of the product.
If an electronic copy of this manual should be required, please contact the manufacturer at the address at the back of this manual.
Important Information
2 Introduction
Thank you for choosing this product.
The Quantum direct electric cylinders are specified with high quality, immersion heaters for fast reheat times. They boast 60mm of low GWP insulation foam, together with 100% recyclable stainless steel inner components and a sleek black, hard wearing outer shell manufactured from completely recycled materials. For more detailed information on product features, please see the Technical Data section in this manual.
NOTE : This product has been designed specifically for the purpose of delivering heated, domestic and sanitary hot water as part of a pressurised water heating system. The package is provided with fittings that comply with Section G3 of Building
Regulations.
WARNING: Dimplex cannot take responsibility for ensuring safe operation of the appliance outside of the scope of intended use.
ly
3 Scope of Delivery
Please ensure you check the scope of delivery below before signing any delivery documentation. Claims for missing or damaged parts after signing for the delivery will not be accepted.
Table 1: Scope of Delivery for Quantum Direct Electric Cylinder
* These items are supplied factory fitted
Scope of Delivery
4 Pre-Installation
Advice
Please read the following section carefully before commencing installation. If in any doubt, please call the appropriate help desk.
Disregarding the instructions given in this manual in its entirety and any relevant regulations, standards and codes of practice will void the guarantee of this product.
Handling – depending on the size of the unit and access to its installation location, consideration must be given to the handling of the unit. Please note that handling, installation and use of this product is subject to the Health and Safety at Work Act.
If the unit is not installed immediately, it should remain in its protective packaging with all pipe protectors/end caps applied to prevent damage and dirt deposit inside the cylinder.
Pipe Work – the pipe runs should be executed as short as possible, unused pipe work should be removed and all remaining pipe work should be lagged in accordance with regulatory requirements to prevent heat loss and the formation of condensation.
Taps and Fittings – all taps and fittings incorporated in the unvented system should have a rated operating pressure of 0.6 MPa (6 bar) or above.
4.1
Risk Assessment
The compilation of a risk assessment is strongly recommended before installing the product. The following areas require particular consideration in addition to the information required by the Health and Safety at Work Act.
- scalding: where appropriate or required by law a thermostatic
Pre-Installation mixing valve is to be fitted to the hot water outlet of the cylinder (see also water borne organisms).
- explosion: the unit is fully equipped with all relevant safety equipment to comply with current regulations. The correct design and function has been verified by independent third party testing. The correct application thereof is the responsibility of the installer.
- water borne organisms (i.e.
Legionella): if applicable a risk assessment should be carried out following the recommendations outlined in the Approved Code of
Practice L8.
- the user preference must be considered when commissioning the system, in particular when adjusting the temperature and timer settings.
4.2
Siting Considerations
When choosing a suitable location for the cylinder the following aspects should be considered:
- structural integrity
- access for installation, operation, maintenance and replacement
- routing of discharge pipe work
- access to water mains supply, hot and cold water distribution pipes
- access to suitable electricity supply
- location in relation to remaining system components
- frost protection
The Quantum direct electric cylinders are designed to be floor standing,
vertically mounted, indoors and in a frost free environment. The cylinder may be located on any flat and level surface, provided it is sufficiently robust to support the weight of the cylinder when full of water (please see technical data) and suitably accessible for replacement/maintenance without specialist tools or lifting equipment as this will void the warranty conditions.
The position and orientation of the cylinder should be such that easy access is provided for servicing the controls. A minimum distance of
400mm in front of the immersion is recommended, to allow the replacement of the immersion heater should the need arise. When installing the cylinder all labels should be clearly visible and ensure that no pipework hinders any work to be carried out on the various cylinder components.
Particular care must be taken when placing the cylinder in a garage or outbuilding. All exposed pipe work must be correctly insulated to avoid frost damage.
CLEANING INSTRUCTIONS:
Clean outer cladding of cylinder with a soft cloth dampened with warm water only. Do not use abrasive or aggressive cleaning materials, such as alcohol or petroleum based solvents, as this may damage the surface of the product.
4.3
Cold Water Supply
For satisfactory and safe performance of the unvented cylinder the water supply must meet the following criteria:
Minimum dynamic pressure
Maximum inlet supply pressure
Minimum flow rate
150 kPa
(1.5 bar)
1200 kPa
(12 bar)
15 l/min
Max. chlorine content 250mg/L
Max. water hardness 200mg/L
The following instructions have to be followed when installing the cold water mains supply to the cylinder:
- The cold water supply to the cylinder must come directly from the cold water mains after the mains stop valve to the property.
- The cold water inlet pipe work should have at least an inside diameter of
19mm and should meet the requirements of the water regulations for the supply of wholesome water.
We recommend an annual maintenance inspection is carried out on the domestic hot water cylinder. In hard water areas this should include inspection of the immersion heater,
[above 120ppm or 120mg/l]. A local water treatment company should be able to offer free water quality testing.
The heating elements may require periodic de-scaling. The installer should do this as part of a maintenance agreement.
If required, precautions can be taken to minimise effects of water hardness, i.e. installation of a water conditioner or water softener. These devices should be installed in hard water areas
Pre-Installation
where high water storage temperatures are required, i.e. greater than 60°C storage temperatures, particularly when water hardness exceeds 200ppm. Should the water cylinder require de-scaling, this must be performed by a qualified technician.
4.4
Building Regulation G3
Discharge
Requirements
As part of the requirements of Building
Regulation G3 any discharge from an unvented system should be conveyed to where it is visible, but will not cause danger to persons in or about the building. The tundish and the discharge pipes should be fitted in accordance with the requirements of Building
Regulation approved document G3,
(England and Wales), Part P of
Northern Ireland and Standard 4.9 of
Scotland.
4.4.1
Discharge Pipe D2
The discharge pipe (D2) from the
Tundish should:
- “have a vertical section of pipe at least 300mm long below the tundish before any elbows or bends in the pipework and be installed with a continuous fall of at least 1 in 200 thereafter.”
The discharge pipe (D2) should be made of:
- “metal; or other material that has been demonstrated to be capable of safely withstanding temperatures of the water discharged and is clearly and permanently marked to identify the product and performance standard”
We strongly recommends the use of metal pipework only and GDC Group
Ltd does not take responsibility for any damage caused from discharges.
The discharge pipe D2 should be at least one pipe size larger than the nominal outlet size of the safety device unless its total equivalent hydraulic resistance exceeds that of a straight pipe 9m long, i.e. for discharge pipes between 9m and 18m the equivalent resistance length should be at least two sizes larger than the nominal outlet size of the safety device; between 18 and 27m at least 3 sizes larger, and so on; bends must be taken into account in calculating the flow resistance. See
Figure 2, Table 2 and the worked
example.
Note: An alternative approach for sizing discharge pipes would be to follow Annex D, section D.2 of BS
6700:2006 + A1:2009).
Pre-Installation
Figure 2: Typical discharge pipe arrangement
Table 2: Sizing of copper discharge pipe “D2” for common temperature relief valve outlet sizes
4.4.2
Worked Example
This example is for a G½ temperature relief valve with a discharge pipe (D2)
(as fitted on 125 to 300L cylinders) having 4 No. 22mm elbows and length of 7m from the tundish to the point of discharge.
From Table 2 , the maximum resistance
allowed for a straight length of 22mm copper discharge pipe
(D2) from a G½ temperature relief valve is 9.0m. Subtract the resistance for 4 No. 22mm elbows at 0.8m each
= 3.2m.
Therefore the maximum permitted length equates to 5.8m, which is less than the actual length of 7m, therefore calculate the next largest size.
Pre-Installation
Maximum resistance allowed for a straight length of 28mm copper discharge pipe (D2) from a G½ temperature relief valve is: 18m
Subtract the resistance for 4 No. 28mm elbows at 1.0m each = 4m
Therefore the maximum permitted length equates to 14m.
As the actual length is 7m, a 28mm
(D2) copper pipe will be satisfactory.
- Where a single common discharge pipe serves more than one system, it should be at least one pipe size larger than the largest individual discharge pipe (D2) to be connected.
- The discharge pipe should not be connected to a soil discharge stack unless the soil discharge stack is capable of safely withstanding temperatures of the water discharged, in which case, it should:
- contain a mechanical seal, which allows water into the branch pipe without allowing foul air from the drain to be ventilated through the tundish.
- there should be a separate branch pipe with no sanitary appliances connected to it.
- if plastic pipes are used as branch pipes carrying discharge from a safety device, they should be either polybutalene (PB) or crosslinked complying polyethylene standards. with
(PE-X) national
- be continuously marked with a warning that no sanitary appliances should be connected to the pipe.
Pre-Installation
4.4.3
Termination of
Discharge Pipe
- “The discharge pipe (D2) from the tundish should terminate in a safe place where there is no risk to persons in the vicinity of the discharge.”
- Examples of acceptable discharge arrangements are:
- “to a trapped gully with the end of the pipe below a fixed grating and above the water seal;
- downward discharges at low level; i.e. up to 100mm above external surfaces such as car parks, hard standings, grassed areas etc. are acceptable providing that a wire cage or similar guard is positioned to prevent contact, whilst maintaining visibility; and ,
- discharges at high level: e.g. into a metal hopper and metal downpipe with the end of the discharge pipe clearly visible or onto a roof capable of withstanding high temperature discharges of water and 3m from any plastic guttering system that would collect such discharges.”
Note: As the discharge would consist of high temperature water and steam, asphalt, roofing felt and non-metallic rainwater goods may be damaged by such discharges.
4.5
Limitations
Due to the operating temperatures of direct electric cylinders the water hardness can considerably influence the longevity of the immersion heater element. Please consult local water board for advice on maintenance intervals.
5 Installation
5.1
Cold Water Inlet with
Inlet Control Group
5.1.1
Correctly Site the
Cylinder
Install the cylinder in an appropriate location, ensuring all of the recommendations have
been
5.1.2
Install the Inlet Group
The inlet group regulates the pressure of the incoming mains water supply to the cylinder and removes any debris that might be water borne.
Note: Between the inlet group and the cold water inlet on the cylinder
NO isolating device may be fitted, as by doing so important safety devices could be isolated!
5.1.3
Expansion Vessel
The expansion vessel is mandatory on all Quantum cylinders and can be connected directly to the cold water inlet group, utilising the flexible hose supplied with the vessel. The expansion vessel should always be fitted in accordance with the manufacturer’s instructions. No isolating device must be fitted between the water cylinder and the cold water inlet group.
Furthermore, it is recommended to mount the vessel higher than the cylinder to avoid having to drain the cylinder when maintaining and replacing the expansion vessel.
Figure 3: Connection of the Expansion
Vessel to the Inlet Group
It is important to check the pre-charge pressure of the expansion vessel membrane before filling the cylinder. This has been factory set to 3 bar.
The pre-charge should be greater than or equal to 3bar.
Note: The expansion vessel must be installed to the side of the expansion relief valve on the inlet group. To do this the blanking plug must be removed and the expansion vessel connected, as
Installation
Cold
Water from
Mains
Expansion
Relief
Valve
Cold
Water to
Cylinder
Figure 4: Detail Showing the Connection of the Expansion Vessel to the Inlet Group
5.1.4
Balanced Cold Water
Supply
If a balanced cold water supply is required a connection can be taken from the bottom of the inlet group.
5.1.5
Drain Valve
It is also recommended to install a drain valve (not supplied) in the lowest point of the cold water feed to the cylinder. This allows the cylinder to be drained in a controlled manner should this become necessary.
5.2
Hot Water Outlet
The hot water pipe work is to be directly connected to the hot water outlet connection on the cylinder, see
Balanced
Cold Water
Supply
Expansion
Vessel
Connection
5.2.1
Thermostatic
Valve
Mixing
A thermostatic mixing valve may be required to limit the outlet temperature. In this case, the valve should be installed following the manufacturer’s instructions, ensuring none of the safety equipment has been isolated, (i.e. make sure the connection to the thermostatic mixing valve is taken after the safety equipment of the inlet group).
5.2.2
Pipe Insulation
It is recommended to insulate the hot water pipe work from the cylinder to the outlets, to reduce the energy requirements for providing hot water.
It is also recommended to insulate all other exposed pipework, such as the
T&P to the tundish, the coil flow and return and the cold water inlet pipes.
5.3
Discharge Pipes from
Safety Devices
5.3.1
Discharge Pipe D1
- The temperature and pressure relief valve must be discharged directly or by way of a manifold via a short length of metal pipe (D1) into a tundish; and the discharge pipe must be installed in a continuously downward direction and in a frost free environment. Water may drip from the discharge pipe of the pressure relief device and this pipe must be left open to the atmosphere.
- The diameter of discharge pipe (D1) should not be less than the nominal outlet size of the safety device, e.g. temperature relief valve.
- Where a manifold is used it should be sized to accept and discharge the
Installation
total discharge from all the D1 discharge pipes connected to it.
- The discharge pipe work from the expansion relief valve must be installed constantly falling to an open point of discharge. It is recommended to combine it with the discharge of the temperature and pressure relief valve.
Note: The T&P valve is pre-sealed and if moved the seal will be broken, should this occur, it will need to be resealed with an
appropriate sealant (see Figure
5.3.2
Discharge Pipe D2
For a detailed description of the discharge pipework D2 see chapter
5.3.3
Tundish
- The tundish should be vertical, located in the same space as the unvented hot water storage system and be fitted as close as possible to, and lower than, the safety device, with no more than 600mm of pipe between the valve outlet and the
- Discharge should be visible at the tundish, where discharges may not be apparent, e.g. in dwellings occupied by people with impaired vision or mobility, consideration should be given to the installation of a suitable safety device to warn when discharge takes place, e.g. electronically operated.
Note: To comply with the Water
Supply (Water Fittings)
Regulations, the tundish should incorporate a suitable air gap.
It is important that the tundish is positioned away from any electrical components.
5.4
Immersion Heaters
The main immersion heater and boost immersion heater supplied with this cylinder come pre-wired. A supply cable shall be connected to the unit through the entry in the electrical enclosure, at the bottom of the cylinder. Details are given on how to do
this in section 5.5 of this manual. The
electrical wiring diagram for the
The immersion heater incorporates an independent non self-resetting over temperature cut-out. Should the over temperature cut-out operate, the reset pin will be pushed upwards, and become level or slightly proud of the cover at the position marked “Safety”, and the water in the cylinder will fail to heat. This denotes a fault somewhere in the system and an appropriate investigation shall be carried out before the cut-out is reset. Use a suitable sized implement to reset the pin by pushing it hard into its original position.
Note: Should it be necessary to remove the thermostat from the immersion element, ensure that the contacts are re-fitted correctly into the positions on the element.
Failure to do so carries the risk of overheating the contacts and thus damaging the appliance.
The immersion heater thermostat must not be opened under any circumstances.
Installation
Figure 5: Correct Operation of Immersion
Heater
Note: The cylinder must be filled with water before switching on the immersion heater. Failure to do so will damage the element and void any guarantee on the product.
5.5
Electrical Connection
The water cylinder has to be connected in accordance with IEE Wiring
Regulations and the installer carrying out the work has to be suitably qualified. Before connecting the cylinder, verify that all the wiring connections on each of the elements and thermostats have been installed correctly, that they are secure and that none of the wires are damaged.
To access the electrical connection panel, remove the enclosure hood by removing the 4 retaining screws on the
sides, as shown in Figure 6. Please take
care when removing the hood, as it is connected to the cylinder via an earth cable and a cable to the UI. The water cylinder requires two supply cables.
Where an off-peak supply circuit is available this can be used and connected to the ‘switched’ supply connections marked on the terminal block. Where only one wiring circuit is available two supplies from this circuit are required. Both supplies must be connected through a separate double pole isolating switch which must have a contact separation of at least 3mm in all poles. The cables shall be connected to the unit through the entry in the electrical enclosure, at the bottom of the cylinder and should be connected
to the cylinder as shown in Figure 7.
The cables should be cable-tied securely to the strain relief provided and if required cable-tied to the existing cabling on the right-hand side.
The protective tape should be removed from the contact area between the hood and the cylinder cladding before
commissioning as per Figure 8.
Figure 6: Retaining Screw Positions
Installation
Unscrew and insert the appropriate wire as per the applied label and retighten
Figure 7: Supply Wiring Connections
Note:
The Boost connections must be connected in series with a toggle switch which allows the external boost function to be utilised.
The external boost connection on the Quantum cylinder is a contact wire which must not be connected to the mains power supply.
If an electronic timer switch from a previous installation is in place it must be replaced with a single pole toggle switch which is wired from the B1 and
B2 connections as shown in Figure 7.
The water temperature required from the boost function can then be set from the UI and the boost element will automatically turn off once this temperature is achieved in 55 litres of the water stored.
Installation
Remove protective tape before commissioning
The two supply cables must be fed through the bottom of the enclosure
Cable ties [supplied] must be used to secure the supply cables into position along the cable clamp.
Figure 8: Supply Cable Anchorage
Installation
Figure 9: Wiring Schematic
Installation
5.6
Connection
Secondary Return of
For cylinders that do not have a dedicated secondary return connection, it is possible to install a secondary return by connecting a swept - T to the cold water inlet of the
The secondary return pipe should incorporate a check valve and a WRAS approved circulation pump; timer and thermostat to be provided separately.
Where secondary return circuits are used, then an additional expansion vessel may be required.
The secondary return loop must avoid:
- stagnant water in long pipe runs
- long waiting times at draw off point for hot water
- undue water wastage
To minimise the energy consumption of the secondary return circuit and to ensure reliable operation it is important to consider:
- the control of the circulation pump to be time and temperature controlled
- the secondary return circuit pipe work to be insulated
- the secondary return pump to be of suitable material and specification
HW Outlet
To Taps
From Taps
Figure 10: Secondary Return Loop
Swept-T
Installation
6 Commissioning
At the time of commissioning, complete all relevant sections of the
Benchmark Checklist located on the inside back pages of this document.
The following commissioning procedures only detail the required steps to be taken for the potable water loop:
1) Before making any mains connections to the inlet control group, flush the mains pipework out to ensure all debris has been removed so as not to damage the strainer within the combination valve.
2) Make final mains connection on combination valve and check all connections and joints to ensure they have been tightened and secured correctly.
3) Before turning on the mains supply to the cylinder a hot water tap should be opened, preferably on the same floor or the floor below where the cylinder is located.
4) Check the pre-charge in the expansion vessel and ensure it is at least 3 bar. Note actual pressure on label on expansion vessel.
5) Turn on the supply to the cylinder and fill until water runs from the open hot water tap. Continue to flush the system until all debris has been removed.
6) Close the hot water tap.
7) Check all joints for leaks, even those not having been altered especially when replacing a vented cylinder.
8) Open temperature and pressure relief valve to ensure proper discharge and check after closing that valve is not dripping.
9) Open expansion relief valve to ensure proper discharge and check after closing that valve is not dripping.
10) Check all shower outlets, toilet cisterns and other draw off points for leaks or dripping (especially when replacing a vented unit).
Open all water outlets to purge air from pipe work and ensure proper operation.
11) Instruct user in the operation of the unit and hand over this manual advising the owner of annual service requirements.
12) Complete the technical data label on the cylinder with legible and permanent writing.
6.1
Verify Electronic
Operation
After the plumbing of the cylinder has been fully commissioned and the appliance connected to a suitable electrical supply, the electrical supply to the unit can be turned on.
The user interface should power up and a battery symbol and temperature should be visible on the display screen.
The user interface consists of the following components as shown:
Commissioning
1.
Display Screen
2.
“Menu” Button
3.
“Back” Button
4.
“Advance” Button
5.
“Selector Dial”
1
2
3
4
5
Figure 11: User Interface
6.2
Initialise System
Settings and
Communications
The system settings of the cylinder can now be verified, and or changed. To access the service menu of the appliance the back button, menu button and selector dial, should be pressed for 10 seconds.
From this menu it is possible to reset the unit to the factory defaults and or set up the appliance to communicate with the utility via the hub.
6.2.1
Reset
- enter the service menu.
- ensure that reset is highlighted, and press the selector dial.
- select using the selector dial if you want to reset the temperature log, the energy log or the full system to the factory defaults. Once the required option is highlighted press and hold the selector dial for 5
seconds (see Figure 12 for how to
access the reset function).
Commissioning
6.2.2
Set Hygiene Mode
- enter the service menu.
- rotate the dial to select hygiene and press the dial to select
- hygiene mode can be set to either
Daily, Weekly, Monthly or Off temperature for hygiene mode operation can then be set between a
range of 60-75˚C (see Figure 12 for
how to access the hygiene function).
6.2.3
Set
Mode
Communications
The water can be controlled by the utility via the RF module installed.
Where this communication mode is not available the unit can be operated in standalone mode (i.e. when communications with the utility are cut off, the cylinder operates in standalone mode). In this mode the heater tries to achieve 60°C at T1 and tries to maintain this throughout the day. The communications of the appliance can
be changed as shown in Figure 12 .
6.2.4
Set Cylinder Size
- enter the service menu.
- rotate the dial to select appropriate cylinder size and press the dial to
- select
6.2.5
RTC Calibration
Calibration of the Real Time Clock is performed on initial commissioning and should not be required by the user unless changes are required to the electronic components on the cylinder.
6.2.6
Set Tariff
- enter the service menu.
- rotate the dial to select tariff and press the dial to select
- the tariff can be set to either Offpeak or Timed.
-
Off peak tariff heats the cylinder using the bottom immersion heater to the primary setpoint whenever an off peak power supply is available
-
Timed tariff requires that time period is set during which the cylinder will be heated to the primary temperature setpoint
6.3
Confirmation of
Operation
Operation of the cylinder shall be confirmed as follows: a) with a cold tank, use a current tester; or b) verify that the outlet pipe feels warm within 1 h of startup.
Note: This should only be attempted if the insulation may be disturbed slightly without damage.
Commissioning
Figure 12: Service Menu for Factory Reset and Communications Set Up
Commissioning
7 Maintenance
After servicing, complete the relevant
Service Record section of the
Benchmark Checklist located on the inside back pages of this document. To meet with warranty requirements the cylinder must be serviced annually.
The maintenance of this appliance must be carried out by a suitably qualified person only. It is recommended to maintain the unit on an annual basis.
Isolate all electrical supplies from the unit before commencing work.
Danger of electrical shock!
1) Draw some water from cold water tap and retain in container.
2) Isolate cold water mains supply from cylinder.
3) Briefly open temperature and pressure relief valve, assure safe discharge and check that valve is not dripping when closed.
4) Briefly open expansion relief valve, assure safe discharge and check that valve is not dripping when closed. The expansion relief valve should be operated regularly to remove lime deposits and to verify that it is not blocked.
5) Open hot water tap and release remaining pressure from unit.
6) If the system is drained completely for an internal inspection, ensure the hot water tap remains open, connect a hose to the drain valve and ensure a safe discharge.
Maintenance
7) Note the set pressure of the pressure reducing valve. Remove cartridge and clean strainer in water provided in container. Reassemble pressure reducing valve ensuring the correct pressure is set.
8) Periodically the immersion heaters should be removed cleaned and the unit flushed out. Check the Oring seal for damage and replace if necessary.
9) Check electrical wiring connections and the condition of the cable of the immersion heater and the thermostat.
10) The immersion heater boss can also be used for access to view the internal components of the cylinder.
11) Re-commission unit (see chapter
If the cylinder is not in use for excess of 1 month, it must be drained down by a competent person and recommissioned before use. Note: The immersion must be switched off at the mains before draining the cylinder.
If replacement parts are required,
descriptions and part numbers.
CLEANING INSTRUCTIONS:
Clean outer cladding of cylinder with a soft cloth dampened with warm water only. Do not use abrasive or aggressive cleaning materials, such as alcohol or petroleum based solvents, as this may damage the surface of the product.
Waste electrical products should not be disposed of with household waste. Please recycle where facilities exist.
Check with your Local
Authority or retailer for recycling advice.
Maintenance
8 Spare Parts
Figure 13: Replacement Part Numbers for Quantum Direct Electric Range of Cylinders
Spare Parts
9 Technical Data and Product Fiche
Figure 14: Quantum Direct Electric Cylinder and Cross-Section (For Reference Only)
Technical Data
Quantum Direct Electric Cylinder Range - Dimensions
Reference
Weight [kg]
Reheat time [mins]*
Heat Loss [kWh/24h]
Height [mm]
Outer Diameter [mm]
HW Outlet [mm]
T&P valve [mm]
CW Inlet [mm]
125
24
122
0.95
945
580
720
720
180
150
27
150
1.10
1115
580
890
890
180
210
34
218
1.41
1490
580
1265
1265
180
250
42
284
1.51
1765
580
1540
1540
180
300
48
313
1.96
2065
580
1840
1840
180
Table 3: Quantum Direct Electric Cylinder Dimensions
Note: All measurements are taken from the base of the cylinder to the mid-point on the item.
* Determined in accordance with EN160335-2-21.
GDC Group Ltd Quantum Direct Electric Cylinder Range – Product Fiche
Reference
Load Profile – Primary
QWCd125
-580
M
QWCd150
-580
M
QWCd210
-580
M
QWCd250
-580
L
QWCd300
-580
L
C
36%
C
37%
C
36%
C
37%
C
37%
Energy Rating
Energy Efficiency
Annual Energy
Consumption [kWh]
Load Profile –
Secondary
Set Temperature
Sound Level [dB]
1411
-
60°C
15dB
1389
-
60°C
15dB
1435
-
60°C
15bB
2739
M
60°C
15dB
2774
M
60°C
15dB
Operating Mode Off Peak Off Peak Off Peak Off Peak
204 l 242 l 355 l 415 l
Table 4: Quantum Direct Electric Cylinder Product Fiche
Off Peak
490 l V-40 [litres]
Technical Data
Quantum Direct Electric Cylinder Range – Product Features
Materials
- inner cylinder
- outer cylinder
- inlet/outlet
Duplex stainless steel LDX2101
HIPS
Stainless steel
- insulation
Maximum operating conditions
- potable water temperature
- operating pressure
- maximum design pressure
60mm PU foam (GWP=1, ODP=0)
70
°
C
3 bar
6 bar
Cold water supply
- minimum dynamic pressure
- maximum pressure
- minimum flow rate
Connections
- cold water inlet
1.5 bar
12 bar
15 l/min
22mm stainless steel
- hot water outlet
Immersion heater
Thermostatic control
- direct input
22mm stainless steel
1
¾
F BSP 3kW integral immersion heater thermostat and cut out
Safety components
- pressure reducing valve and strainer
- expansion relief valve
3 bar
6 bar
- temperature and pressure relief valve
- factory pressure test
Other features
7 bar/90
°
C
12 bar
Over 60% in volume from recycled materials#
Surface mounted sensor devices for compatibility and ease of maintenance
Approvals
KIWA approval number:- 1112719
Guarantee
- inner cylinder
- immersion heaters
25 yrs.
2 yrs. - excluding the effects of lime scale or other water borne contaminants
- other components
2 yrs. - excluding expansion vessel membrane pressure
Table 5: Quantum Direct Electric Product Fiche and Features
# Not including insulation
Technical Data
10 User Instructions
10.1
General
“This appliance can only be used by children aged from 8 years and above and persons with reduced physical sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understanding the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.”
Please read the following statements carefully as it affects your warranty:
Please ensure that the installer has fully completed the Benchmark
Checklist on the inside back pages of this document and that you have signed it to say that you have received a full and clear explanation of its operation. The installer is legally required to complete a commissioning checklist as a means of complying with the appropriate Building Regulations
Part G3 (England and Wales), Part P of
Northern Ireland and Section 6 of
Scotland.
All installations must be notified to
Local Area Building Control either directly or through a Competent
Persons Scheme. A Building
Regulations Compliance Certificate will then be issued to the customer who should, on receipt, write the
Notification Number on the Benchmark
Checklist.
This product should be serviced annually to optimise its safety, efficiency and performance. The service engineer should complete the relevant Service Record on the
Benchmark Checklist after each service.
The Benchmark Checklist will be required in the event of any warranty work.
The permanent supply to the cylinder must be maintained at all times. The cylinder will ensure that heating only occurs during off-peak periods. If hot water is not required for a number of days Holiday mode should be activated. Failure to maintain the permanent supply can lead to cylinder malfunction.
10.2
Operation
The hot water temperature can be set to various requirements. It is recommended to set the hot water temperature to between 45
°
C and
55
°
C. Higher temperatures can introduce more heat loss from the unit and increase the risk of scalding
User Instructions
significantly. A thermostatic mixing valve should be considered.
When turning on a hot tap for the first time after a heat up period there might be a short surge of water. This is normal in unvented systems and does not constitute a fault. Sometimes the water may appear milky – this is due to very fine air bubbles in the water which will clear quickly.
10.2.1
User Interface
The user controls and settings are assessable using the user interface as
indicated on Figure 1. The user
interface consists of the following
components as shown in Figure 15.
1.
Display Screen
2.
“Menu” Button
3.
“Back” Button
4.
“Advance” Button
5.
“Selector Dial”
1
2
3
4
5
Figure 15: User Interface
Access to the main menu is by pressing the menu button on the User interface
The following parameters can then be set and changed by the user:
- setting of date and time, primary and boost immersion heater set
Operation
- setting of Functions (see Figure 20)
- display settings (see Figure 18)
10.2.2
Home Screen
The Home screen displays live information on the current status of the
hot water cylinder as show in Figure
1.
Current outlet water temperature.
2.
Charge status of the cylinder section. E.g. shaded when the
3.
Software version on the Charge
Controller and User Interface. temperature is greater than or equal to 40°C.
1
2
3
Figure 16: Home Screen
10.2.3
Setting the Date and
Time
To adjust the time or date, follow the steps below:
-
Press the Menu Button
-
Select Time/Temp by pressing the control dial
-
Press the dial to select Set
Date/Time
-
Rotate the dial to select the correct
‘day’ and press the dial to select
-
Rotate the dial to select the correct month and year and press to select
-
Rotate the dial to select the correct time and press to select
10.2.4
Setting the Primary and
Boost Immersion
Heater Temperature
Setting the temperature is under the same menu as the date and time:
-
Press the Menu Button
-
Select Date/Time/Temp by pressing the control dial
-
Rotate the dial to select Set and press the dial to select
-
Rotate the dial to select Set Temp and press the dial to select
-
Press the dial to select Primary
Temp to set the primary immersion temperature or rotate the dial to
Boost Temp and press the dial to select the Boost temperature set point
10.2.5
Activate and Deactivate the Boost
Immersion
This is accessed from the Home screen and will be active until the boost temperature is achieved or a period of
1.5 hours has passed:
- press the advance button to activate
- press the advance button again to de-
10.2.6
Accessing Energy and
Temperature
Information
The Quantum cylinder also provides information about the hot water stored.
Information is provided on the current status of the cylinder as well as some historical data. This information is accessed by pressing the selector dial for 3 seconds to display the user information menu; three choices are available:
Operation
1.
Temperature – Displays the current, minimum and maximum temperatures recorded by the four temperature sensors
2.
Energy i.
Current – Displays current energy consumption by the immersion heater, storage capacity is the remaining storage capacity in the cylinder at that moment of time and the available hot water volume relating to the set temperature
(stored now). Should the temperature be higher than the set temperature, then the mixed water volume to the set temperature is stated. ii.
History – gives the energy consumption in kWh available for day -1, week-1, month-1, and the total energy that the unit has consumed since it has been installed.
The colour of the display will turn red once 48 °C is exceeded.
Above this temperature is generally considered to be unsafe and could cause a serious scald. The user should always run the cold tap first when filling a bath and test the water before getting into a bath or shower. The recommended temperature for bathing is 37°C.
3.
Counter - Displays the total number of hours logged utilising the boost function.
10.2.7
Accessing and Setting
Functions
To access and select Holiday Mode or
No Control, follow the steps below:
-
Press the menu button
-
Rotate the dial to select Function and press the dial to select
-
Rotate the dial to select one of
Holiday or No Control and press the dial to select
-
Set the desired timer conditions and press the dial to confirm
Holiday mode disables all heating during the selected holiday period. The holiday period consists of the remainder of the current day plus the number of holidays selected in the timer mode menu.
10.3
Maintenance
DANGER: The maintenance of this appliance shall be carried out by a suitably qualified person only. The unit should be maintained on an annual basis. Isolate all electrical supplies from the unit before commencing work.
Danger of electrical shock!
The Immersion Heater thermostat should not be removed from the immersion heater body.
Operation
*
Figure 17: How to Set the Current Date, Time, Primary and Boost Temperature Set Point
Operation
Figure 18: How to Adjust the Display Settings of the User Interface
Figure 19: How to Activate and De-activate the Boost Immersion Heater
Operation
Figure 20: How to Set Timer Modes
Operation
Figure 21: How to Access the System Information on the User Interface
Operation
10.4
Troubleshooting
Fault Cause
A No water from hot
water taps
A.1 Stop valve closed
A.2 Strainer blocked
A.3 Pressure reducing valve fitted against flow
B.1 Expansion vessel lost charge
B Intermittent water discharge through tundish on warm-up
C Continuous discharge
D Leakage from casing
E Hot water from cold tap
C.1 Pressure reducing valve not working
C.2 Pressure relief or T&P valve not seating correctly
C.3 Malfunction of high limit thermostat or appliance
E.1 Compression/threaded joints not formed correctly
E.1 Hot pipe work being routed adjacent to cold pipe work
E.2 Leaking seal in mixer tap
G.1 Pipe work not sufficiently supported
F Metallic noise from system
G Humming noise from system during reheat
G.1 Air in system
G.2 Flow rate well in excess of specification
Solution
A.1 Open stop valve
A.2 Turn water supply off, clean strainer and re-commission
A.3 Re-fit with arrow showing in direction of flow
B.1 Check expansion vessel (see commissioning/maintenance)
, top up or replace
C.1 Check pressure after valve and replace if faulty
C.2 Manually lift valve once or twice to clear debris, otherwise replace
C.3 Check function of thermostats and appliances
E.1 Re-seal joints with care
E.1 Insulate hot pipe work or reroute
E.2 Replace seals in mixer tap
F.1 Add extra pipe work fixings
G.1 Bleed system thoroughly and re-pressurize
G.2 Reduce pump speed
User Interface
Fault
A Cylinder not charging
B The water in the cylinder is too hot
C Hot water runs out during the day
Cause
A.1 Power supply turned off
A.2 Tariff not set correctly
A.3 Temperature setpoint not set correctly
A.4 Direct heating malfunction
A.5 Direct heating high limit thermostat has tripped
B.1 Primary/Boost temperature set point is too high
B.2 Hygiene mode overriding primary set point
B.3 Temperature sensors faulty or not installed correctly
C.1 Cylinder not storing enough energy to meet daily requirements
C.2 Increased usage resulted in hot water ran out earlier than usual
Solution
A.1 Ensure both power supplies are turned on
A.2 Set Tariff correctly (Section
A.3 Set Primary Setpoint
A.4 Call for qualified person to check immersion heater
A.4 Reset limit thermostat(s) and inform installer
B.1 Check/Adjust the primary and boost temperature set
B.2 Check/Adjust the Hygiene
B.3 Check temperature displayed for accuracy
incorrect contact installer
C.1 Raising the Primary set point in order to store additional energy during the off peak
C.2 Boost function heats a small volume of water (Section
User Interface
10.5
Overall View of User Interface
Notes
Notes
GDC Group Ltd
Millbrook House Grange Drive, Hedge End, Southampton SO30 2DF
Tel.: 0845 600 5111 e-mail: [email protected] www.dimplex.co.uk
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