EHC NDIR120L User manual

EHC Neptune Series
Unvented Hot Water Cylinders
Installation and
technical manual
THESE INSTRUCTIONS SHOULD BE READ CAREFULLY AND
RETAINED FOR FUTURE REFERENCE.
Unvented cylinders are a controlled service as defined in the latest edition of
the building regulations and should only be fitted by a competent person. The
relevant regulations are:
England and Wales – Building Regulation G3
Scotland – Technical Standard P3
N Ireland – Building Regulation P5
After installation the Benchmark log book must be completed and left, with
these instructions, with the householder for future reference.
The Electric Heating Company Ltd
Unit 40, Block 5, Third Road, Blantyre Industrial Estate, Blantyre, Glasgow, G72 0UP
Tel. [phone]
Fax. [phone]
[e-mail]
www.electric-heatingcompany.co.uk
CONTENTS

EHC Neptune Unvented Cylinders – Installation and technical manual Page 2
1. Introduction ................................................................. 2
2. Unpacking the unit ...................................................... 3
3. Choosing a site ........................................................... 4
4. Schematic diagram ..................................................... 5
5. General installation ..................................................... 6
6. Discharge arrangement ............................................... 8
7. Electrical connections and wiring ................................ 10
8. Commissioning ........................................................... 11
9. Servicing ..................................................................... 12
10. Fault finding ................................................................ 13
11. Technical data ............................................................. 14
12. Technical specifications .............................................. 15
13. User instructions ......................................................... 16
14. Benchmark Service Record ........................................ 17
15. Guarantee ................................................................... 18
1. Introduction
The Neptune unvented cylinder is made from Duplex Stainless Steel for excellent corrosion
resistance. The Neptune has a strong rust-proofed steel case and is highly insulated with
environmentally friendly foam.
It is available in 3 standard capacities: 120, 150 and 250 litres, in Direct and Indirect
versions.
This manual is provided to assist the installation and maintenance of the following models
NDIR120L
NDIR150L
NDIR210L
NIND120L
NIND150L
NIND210L
The Neptune is supplied complete with all the necessary safety and control devices needed
to connect to the cold water mains. All are pre-adjusted. High quality controls have been
selected to combine high flowrate performance with minimum pressure drop to make the
Neptune perform well in all areas, even those with poor water pressure. The Neptune is
WRAS approved to show compliance with Building Regulations G3+L.
STORAGE PRIOR TO INSTALLATION
Neptune should be stored in its original packaging in an upright position in an area free from
excessive damp.

EHC Neptune Unvented Cylinders – Installation and technical manual Page 3
2. Unpacking the unit
The Neptune comes complete with all the fittings you need to complete the installation:
Direct Models (Electric)
Inlet control set
Temp & Pressure relief valve
15mm / 22mm Tundish
Expansion vessel
Wall mounting bracket
Expansion vessel hose
2 x 3 kW Immersion heaters
Installation & Maintenance Instructions
Benchmark Logbook
Indirect Models (Gas, Oil or Electric boilers)
Inlet control set
Temp & Pressure relief valve
15mm / 22mm Tundish
Expansion vessel
Wall mounting bracket
Expansion vessel hose
1 x 3kW Immersion Heater
Two port zone valve
Dual Thermostat
Installation & Maintenance Instructions
Benchmark Logbook
Expansion vessel 15/22mm Tundish Expansion vessel hose
Wall mount kit for expansion
vessel
Temperature and pressure
relief valve
Dual thermostat
High flow rate inlet control
set
Immersion Heater Two port valve

EHC Neptune Unvented Cylinders – Installation and technical manual Page 4
3. Choosing a site
Water supply
The Neptune operates at 3 bar (controlled by the inlet control set) and is capable of
delivering over 50 litres per minute. The high quality inlet control set has been designed to
make the most of the flow rates available however the performance of any Unvented system
is only as good as the mains water supply. The maximum possible water demand should be
assessed taking into consideration that both hot and cold services are supplied
simultaneously from the mains. The water supply should be checked to ensure it can meet
these requirements. If necessary consult the local water company regarding the likely
pressure and flow rate availability.
If measuring the water pressure note that a high static (no flow) mains pressure is no
guarantee of good flow availability. In a domestic installation 1.5 bar and 25 l/m should be
regarded as the minimum. The maximum mains pressure the inlet control set can cope with
is 16 bar. Consideration should be given to upgrading existing ½” (15mm) cold mains
pipework to a larger size if the recommended minimum pressure/flowrate is not being
achieved.
Siting the unit
The Neptune can supply outlets above it or at some distance from it. Site the unit to minimise
“dead leg” distances especially to the point of most frequent use. Outlets above the Neptune
will reduce the outlet pressure available by 0.1 bar for every 1m of height difference. The unit
should be protected from frost. Particular care is needed if siting in a garage or outbuilding.
All exposed pipework should be insulated.
The Neptune must be installed vertically on a flat base capable of supporting the weight of
the cylinder when full (see technical specification section – page 15 – for weights). The
minimum recommended cupboard size is 650mm square.
Access for maintenance of the valves should be considered. The immersion heaters are
375mm long and care should be taken that they can be withdrawn for servicing if required.
The discharge pipework from the safety valves should fall continuously and terminate safely.

EHC Neptune Unvented Cylinders – Installation and technical manual Page 5
4. Schematic diagram
Notes:
The Pressure reducing valve, Non return valve and
Expansion relief valve are combined together in the
inlet control set. On 120 – 150 litre sizes there is no
dedicated secondary return boss and the secondary
return circuit should be tee’d into the cold feed pipe
just above the drain elbow.

EHC Neptune Unvented Cylinders – Installation and technical manual Page 6
5. General installation
Cold mains pipework
1. Run the cold main through the building to the place where the Neptune
is to be installed. Take care not to run the cold pipe near hot water or
heating pipe work so that the heat pick up is minimized.
2. Identify the cold water supply pipe and fit an isolating valve (not
supplied) A 22mm BS1010 stopcock can typically be used but a 22mm
quarter turn full bore valve would be better as it does not restrict the
flow as much. Do not use “screwdriver slot” or similar valves.
3. Make the connection to the cold feed of the cylinder and incorporate a
drain valve. Position the inlet control just ABOVE the Temperature &
Pressure Relief Valve (TPRV) mounted on the side of the cylinder. This
ensures that the cylinder does not have to be drained down in order to
service the inlet control set. Ensure that the arrow points in the
direction of the water flow.
All of the pipe-work connections on the cylinder are 22mm
compression and supplied complete with gland nuts and olives, packed
in the Accessory Kit box. Only connect 22mm Table X copper tube to
these connections. Cut the tube with a pipe cutter and ensure no sharp
edges or burrs protrude. Slide both gland nut and olive onto the tube
and push tube fully home into the connection, ensuring the tube fully
bottoms on the connection recess. Smear the outer wall of the olive with
plumbing paste and tighten gland nut in the prescribed manner. Upon
filling/commissioning ensure all connections are completely watertight.
No control or isolation valve should be fitted between the expansion relief valve and
the storage cylinder. The relief valve connections must not be used for any other
purpose."
4. Select a suitable position for the expansion vessel. Mount it to the wall using the bracket
provided. Use the hose to connect to the inlet control group. Ensure that the top of the vessel
is accessible for servicing.
Balanced cold connection
5. If there are to be showers, bidets or monobloc taps in
the installation then a balanced cold supply is
necessary. There is a 22mm balanced connection on
the inlet control set.
Hot water pipework
6. Run the first part of the hot water distribution
pipework in 22mm. This can be reduced to 15mm
and 10mm as appropriate for the type of tap etc. Your
aim should be to reduce the volume of the hot draw
off pipework to a practical minimum so that the time
taken for the hot water is as quick as possible.
Do not use monobloc mixer tap or showers if the balanced cold connection is not
provided. Outlets of this type can back-pressurize the unit and result in discharge.

EHC Neptune Unvented Cylinders – Installation and technical manual Page 7
5. General installation (continued)
Primary coil connections
7. Connect the primary connections (Indirect only) using the compression connections
provided. The primary circuit must be positively pumped. Gravity circulation is not suitable.
Either primary connection may be used as the primary flow – reheat times are identical either
way. The primary circuit can be open vented or sealed with up to a maximum pressure of 3.5
bar.
8. If you seal the primary circuit an additional expansion vessel and safety valve is required.
The boiler may be Gas, Electric, or Oil but must be under effective thermostatic control.
Uncontrolled heat sources such as some AGA’s, back boilers, solid fuel stoves, etc are NOT
SUITABLE. Please contact our technical department for guidance.
9. Connect the two port zone valve ( indirect only ) into the primary flow pipework. The
direction of flow arrow should be towards the primary flow connection. Again a two port zone
valve should be fitted (supplied).
Secondary circulation
The Neptune can be used with secondary circulation. An appropriate WRAS approved
bronze circulator should be used in conjunction with a non return valve to prevent backflow.
On large secondary circulation systems it may be necessary to incorporate an extra
expansion vessel into the circuit to accommodate the increased system water volume.
Secondary circulation should be avoided on Direct electrically heated units being
used on off peak electricity tariffs. A secondary return boss is fitted as standard on 210L
cylinders. On smaller sizes tee into the cold feed pipe above the drain.
Immersion heaters
Only immersion heaters with a thermal cutout may be used. To help ensure this the
immersion heaters have a special 1¾“ thread. They are rated at 3 kW at 240 V and are of a
low noise Incoloy construction. They have both a thermostat and a high limit cutout. Please
order the correct replacement via us, as fitting non-approved immersions may affect your
guarantee. When fitting, ensure the ‘O’ ring is positioned correctly on the head of the
immersion heater and lubricate before fitting. Fit it by hand until almost home then tighten
gently as the ‘O’ rings will seal easily.
The electrical supply to each immersion heaters must be fused at 13A via a double pole
isolating switch to BS 3456. The cable must be 2.5mm2heat resistant (85°C HOFR)
sheathed flex complying to BS 6141:1981 Table 8. Do not operate the immersion heater/s
until the unit is full of water. Do not operate the immersion heater/s if any sterilisation liquid is
in the cylinder as this will cause premature failure. Fit the immersion thermostat (indirect
only) into the thermostat pocket. Complete the wiring – use the appropriate wiring diagrams
on page 10.

EHC Neptune Unvented Cylinders – Installation and technical manual Page 8
6. Discharge arrangement
The above diagram is of a typical discharge pipe arrangement.
(extract from Building Regulation G3)
Note: The discharge will consist of scalding water and steam. Asphalt, roofing felt and non-
metallic rainwater goods may be damaged by such discharges.
Note: It is not acceptable to discharge straight into a soil pipe. Position the inlet control
group so that the discharge from both the two safety valves can be joined together via a
15mm end feed Tee. Connect the Tundish and route the discharge pipe.
The discharge pipework must be routed in accordance with Part G3 of schedule 1 of the
Building Regulations.
The information that follows is not exhaustive and if you are in doubt you should seek
advice.
The two safety valves will only discharge water under fault conditions. When operating
normally water will not be discharged. The tundish should be vertical, located in the same
space as the unvented hot water storage system and be fitted as close as possible and
within 500mm of the safety device e.g. the temperature relief valve. 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, be of metal and:
A) 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. discharge pipes between 9m and 18m equivalent resistance length should
be at least two sizes larger than the 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. Refer to diagram 1, Table 1 and the
worked example. An alternative approach for sizing discharge pipes would be to
follow BS6700 Specification for design installation, testing and maintenance of
services supplying water for domestic use within buildings and their curtilages.
B) Have a vertical section of pipe at least 300mm long, below the tundish before any
elbows or bends in the pipework.

EHC Neptune Unvented Cylinders – Installation and technical manual Page 9
6. Discharge arrangement (continued)
C) Be installed with a continuous fall.
D) It is preferable for the discharge to be visible at both the tundish and the final point of
discharge but where this is not possible or practically difficult there should be clear
visibility at one or other of these locations. Examples of acceptable discharge
arrangements are:
1. Ideally below the fixed grating and above the water seal in a trapped gulley.
2. Downward discharges at a low level; i.e. up to 100mm above external
surfaces such as car parks, hard standings, grassed areas etc. are
acceptable providing that where children play or otherwise come into contact
with discharges, a wire cage or similar guard is positioned to prevent contact
whilst maintaining visibility.
3. Discharges at a high level; e.g. in to metal hopper and metal down pipe with
the end of the discharge pipe clearly visible (tundish visible or not) or onto a
roof capable of withstanding high temperature discharges of water and 3m
from any plastic guttering systems that would collect such discharges
(tundish available).
4. Where a single pipe serves a number of discharges, such as in blocks of
flats, the number served should be limited to not more than 6 systems so
that any installation can be traced reasonably easily. The single common
discharge pipe should be at least one pipe size larger than the largest
individual discharge pipe to be connected. If unvented hot water storage
systems are installed where discharges from safety devices may not be
apparent i.e. in dwellings occupied by blind, infirm or disabled people,
consideration should be given to the installation of an electronically operated
device to warn when discharge takes place.
Worked example
The example below is for G1/2 temperature relief valve with a discharge pipe (D2) having 4
No. elbows and length of 7m from the tundish to the point of discharge.
From Table 1:
Maximum resistance allowed for a straight length of 22mm copper discharge pipe (D2) from
a G1/2 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
5.8m is less than the actual length of 7m therefore calculate the next largest size. Maximum
resistance allowed for a straight length of 28mm
pipe (D2) from a G1/2 temperature relief valve equates to: 14m
As the actual length is 7m, a 28mm (D2) copper pipe will be satisfactory.
Table 1
Sizing of copper discharge pipe ‘D2’ for a temperature
relief valve with a G1/2 outlet size (as supplied).
Size of
discharge
pipework
Maximum length of straight
pipe (no bends or elbows)
Deduct the figure below from the
maximum length for each bend or
elbow in the discharge pipe
22mm Up to 9m 0.8m
28mm Up to 18m 1m
35mm Up to 27m 1.4m

EHC Neptune Unvented Cylinders – Installation and technical manual Page 10
7. Electrical connections and wiring
If the Neptune cylinder is used with the EHC Fusion Boiler. An S-Plan
configuration with Volt-connections on the Acuators gray and orange
wire must be used. If in doubt refer to the Fusion wiring diagram or
conatct the EHC Technical team.
TWO 2 PORT ZONE VALVE (S-PLAN)
VARIANT DUAL THERMOSTAT WIRING
3 PORT MID POSITION VALVE (Y-PLAN) + 2 PORT VALVE
VARIANT DUAL THERMOSTAT WIRING

EHC Neptune Unvented Cylinders – Installation and technical manual Page 11
8. Commissioning
Filling
Check the pressure in the expansion vessel is 3 bar (45 PSI), i.e. the same as the setting of
the pressure reducing valve. The valve is of the car tyre (Schrader) type. Check all the
connections for tightness including any factory made connections such as the immersion
heater and the temperature and pressure relief valve. Before filling, open the hot tap furthest
away from the Neptune to let air out. Open the cold main isolation valve and allow the unit to
fill. When water flows from the tap allow it to run for a short while to flush through any dirt,
swarf or flux residue. Close the tap and open every other hot tap in turn to purge all
remaining air.
Direct units
After filling with water and after sterilisation liquid has been purged, switch on the power to
the immersion heaters and allow the unit to start to heat. The immersion heater is supplied
preset at 55°C. Turning fully to + sets to approx 65°C.
Indirect units
Consult the boiler manufacturers commissioning instructions and fill the primary circuit.
Ensure the lever on the two port valve is set to the filling position. When full move the lever
back. Switch the programmer to Domestic Hot water (DHW) and allow the unit
to start to heat. Adjust the dial of the dual thermostat to between 55°C and 65°C as required.
Storage temperature
The recommended storage temperature for both direct and indirect cylinders is 60-65°C. In
hard water areas consideration should be given to reducing this to 55°C. In many healthcare
applications the guidance on Legionella control and safe water delivery
temperatures will require storing the water at 60-65°C, distributing at 55°C and using
thermostatic mixing valves to control the final temperature.
For details consult the NHS Estates Guidance on safe hot water temperatures.
Safety valve checks
During heat-up there should have been no sign of water coming from either the expansion
relief valve or the temperature / pressure relief valve. Now hold both of these safety valves
fully open allowing as much water as possible to flow through the
tundish. Check that your discharge pipework is free from debris and is carrying the water
away to waste efficiently. Release the valves and check that they reseat properly.

EHC Neptune Unvented Cylinders – Installation and technical manual Page 12
9. Servicing
Servicing should only be carried out by competent installers and any spare parts used must
be purchased from The Electric Heating Company. NEVER bypass any safety devices or
operate the unit without them being fully operational.
Draining
Isolate from the electrical supply to prevent the immersion heaters burning out. Isolate the
unit from the cold mains. Attach a hose to the draining tap ensuring it reaches to a level
below the unit (This will ensure an efficient syphon is set up and the maximum amount of
water is drained from the unit). Open the hot tap closest to the unit and open the draining
tap.
WARNING: WATER DRAINED OFF MAY BE VERY HOT!
Annual maintenance
The Neptune requires an annual service in order to ensure safe working and optimum
performance. It is essential that the following checks are performed by a competent installer
on an annual basis. Should your boiler be of the type that requires annual servicing then the
annual servicing of the Neptune Cylinder is normally done at the same time.
1) Twist the cap of the expansion relief valve on the inlet control set and allow water to flow for 5
seconds. Release and make sure it resets correctly. Repeat with the pressure / temperature
relief valve. In both cases check that the discharge pipework is
carrying the water away adequately. If not check for blockages etc. and clear.
WARNING: THE WATER DISCHARGED MAY BE VERY HOT!
2) Check that any immersion heaters fitted are working correctly and that they are controlling
the water at a temperature between 55°C and 65°C.
3) Check the pressure in the expansion vessel is charged to 3 bar. Turn off the water supply to
the unit and open a hot tap first. The air valve on expansion vessel is a Schrader (car tyre)
type. Air or CO2may be used to charge the expansion vessel.
4) Unscrew the head on the inlet control set and clean the mesh filter within.
5) The benchmark log book supplied with this unit should be updated at each service.
YOUR GUARANTEE MAY BE VOID WITHOUT PROOF OF ANNUAL SERVICING.
Spare parts
We carry the full range of spares listed below in stock. If you order before noon we will
dispatch the same day for delivery the next to most locations. Tel: [phone].
TS201 Inlet control set (pressure reducing valve, strainer and expansion relief valve)
TS202 Temperature & pressure relief valve
TS3 Tundish
TS4 Expansion relief valve (cartridge only)
TS105 2 port valve
TS207 Dual thermostat
TS9 Immersion heater (same on all models)
TS212 12 litre Expansion Vessel (120 & 150 ltr sizes)
TS219 19 Litre Expansion vessel (210 ltr size)
TS216 Wall mounting bracket
TS214 Expansion vessel hose ( ¾” M x ¾” F )

EHC Neptune Unvented Cylinders – Installation and technical manual Page 13
10. Fault finding
FAULT POSSIBLE CAUSE SOLUTION
Water escaping from the case Compression fitting on hot draw off not sealing Check / remake joint with sealing paste
Cold water at hot taps Direct – Immersion heater not switched on or
cutout has triggered
Check / reset
Indirect – Boiler not working Check boiler – consult boiler manufacturer’s
instructions
Indirect – Motorised valve fault Check plumbing / wiring to motorised valve
Indirect – cut-out in dual stat has operated Reset and investigate cause
Water discharges from
expansion relief valve
If continual – pressure reducing valve (part of
inlet control set) may not be operating properly
Check outlet pressure from inlet control set
is 3 bar
If continual – expansion relief valve seat may be
damaged
Remove cartridge – check seat and renew if
necessary
If intermittent – expansion vessel charge may
have reduced / bladder perished
With cylinder cold, check pressure in cyliner.
If this is the same as the incoming mains
pressure then you are getting backfeed.
Install a balanced cold supply – see page 6
Water discharges from
temperature and pressure relief
valve
Unit has overheated – thermal controls have
failed
Switch off power to boiler and immersion
heaters. Leave water supply on. Wait until
discharge stops. Isolate water suppy and
replace if faulty
Milky / cloudy water Oxygenated water Water from any pressurised system will
release oxygen bubbles when flowing. The
bubbles will settle out.
No hot water flow Cold main off Check and open stop cock
Strainer blocked in pressure reducing valve Isolate water supply and clean
Inlet control set may be fitted incorrectly Check and refit as required
Noise during hot water draw off
– typically worse in the morning
Loose airing cupboard pipework Install extra clips
Hot or warm water from cold
tap
If tap runs cold after a minute or so the pipe is
picking up hear from the heating pipework
Insulate / re-route

EHC Neptune Unvented Cylinders – Installation and technical manual Page 14
11. Technical Data
Materials
Inner shell – Duplex Stainless Steel
Coil – 22mm Diameter Stainless Steel
Bosses – Stainless Steel
Every Neptune cylinder is water tested to a pressure
of 15 bar.
Insulation
Fire retardant polyurethane foam, nominal thickness
50mm.
The foam is CFC-Free and HCFC-Free.
The foam has an Ozone Depletion Potential of
ZERO
and a Global Warming Potential of One.
Casework
Zintec corrosion proofed steels throughout
Durable metallic finish outer casing
Anode
None fitted / none required
Expansion Vessel
12 Litre size with 120 and 150 Litre models
18 Litre size with 210 Litre model
Control Settings
Pressure Reducing Valve – 3 Bar
Expansion Relief Valve – 6 Bar
Pressure and Temperature Relief Valve – 7 Bar/90°C
High Limit Thermostat in Dual Thermostat – 85°C
High Limit Thermostat in Immersion Heater – 85°C
Immersion Heater
1¾” BSP Parallel Threaded Head
Long Life Incoloy Sheathed Low Noise Element 14” Long
Long Life Incoloy Sheathed Thermostat Pocket 11” Long
Brazed Construction
Combined Thermostat and Safety Cut-Out
Element Rating 3kW at 240V AC
Approvals
WRAS Approved to the Water Regulations
WRC-NSF Approved to Building Regulations G3 & L
CE Compliant and fitted with a BEAB Approved
Immersion Heater

EHC Neptune Unvented Cylinders – Installation and technical manual Page 15
12. Technical Specifications
Direct cylinder Indirect cylinder
Direct cylinder
Model No.
Capacity
Litres
Rating
kW
Diameter
mm
Height
mm
Weight
Empty
kg
Weight
Full
kg
D
mm
F
mm
NDIR120L 120 3kW x2 550 906 30 150 – 510
NDIR150L 150 3kW x2 550 1093 35 185 – 610
NDIR210L 210 3kW x2 550 1469 45 255 1000 810
Indirect cylinder
Model No.
Capacity
Litres
Rating
kW
Diameter
mm
Height
mm
Weight
Empty
kg
Weight
Full
kg
A
mm
B
mm
C
mm
D
mm
F
mm
NIND120L 120 3kW 550 906 35 155 290 330 390 345 –
NIND150L 150 3kW 550 1093 40 190 330 370 465 385 –
NIND210L 210 3kW 550 1469 50 260 365 405 465 465 1150
Recovery times
INDIRECT 120L 150L 210L Litres
* 14.04 15.55 22.00 Minutes
** 20.06 22.21 31.43 Minutes
DIRECT 120L 150L 210L Litres
* 97.12 124.24 178.44 Minutes
** 138.75 177.48 254.92 Minutes
The Direct times are based upon 1 x 3 Kw element in the lower position
*Time in minutes to raise 70% of the contents of the cylinder back to 65C
** Time in minutes to raise whole contents from 15C to 65C

EHC Neptune Unvented Cylinders – Installation and technical manual Page 16
13. User Instructions
The Neptune cylinder is automatic in normal use and requires only annual servicing. You
should employ a competent installer to perform the annual servicing. If your boiler is of the
type that requires annual servicing the annual service of the cylinder is usually done at this
time.
IF WATER IS FLOWING FROM THE SAFETY VALVES THROUGH THE TUNDISH THIS
INDICATES A FAULT CONDITION AND ACTION IS NEEDED.
If this water is hot turn the boiler and / or the immersion heater off. Do not turn off the water
until the discharge runs cool. The discharge may also stop.
CALL A COMPETENT PLUMBER OUT TO SERVICE THE UNIT.
Tell them you have a fault on an unvented cylinder. We stock all the spare parts they may
need.

EHC Neptune Unvented Cylinders – Installation and technical manual Page 17
14. Service Record

EHC Neptune Unvented Cylinders – Installation and technical manual Page 18
15. Guarantee
The Neptune’s stainless steel vessel carries a 25 year guarantee against faulty materials or
manufacture provided that:
It has been correctly installed as per this
document and all the relevant standards,
regulations and codes of practice in force
at the time.
It has not been modified in any way, other
than by the manufacturer.
It has not been misused, tampered with or
subjected to neglect.
It has only been used for the storage of
potable water.
It has not been subjected to frost damage.
The unit has been serviced annually.
The benchmark log book has been filled in
after each annual service.
The guarantee period starts from the date of
purchase and no registration is required.
The extended guarantee is not transferable,
and rests with the original householder.
The system is fed from a public water supply.
Please note that invoices for servicing may be requested to prove that the unit has been
serviced annually. All the components fitted to / or supplied with the Neptune carry a 2 year
guarantee.
EXCLUSIONS – THE GUARANTEE DOES NOT COVER the effects of scale build up, any
labour charges associated with replacing the unit or its parts, nor any consequential losses caused
by the failure or malfunction of the unit.
GUIDANCE IN THE EVENT OF A PROBLEM
If you have a problem in the first year contact the plumber who fitted the unit. Thereafter contact
the plumber who carries out the annual servicing for you. If your Neptune develops a leak we will
supply you with a new one. We ask for an nominal upfront payment to prevent fraud. We will
require the original unit to be returned to us for inspection along with a copy of your benchmark log
book. If it is confirmed that it has failed within the terms of the warranty your upfront payment will
be refunded.
If a component part fails within the two year guarantee period we will send you a new one without
any upfront charge. Credit card details may be taken to prevent fraud. We ask you to post the faulty
part back to us within one month by recorded delivery.
If you do not return the part we will charge you for it and for the postage and packing. If your part
fails after two years service, we will ask for upfront payment.
For advice, support, or further
information on The Electric Heating
Company’s full range of electric
heating products, or one of our free
Product guide and installation DVDs,
call now on 01698 820 533.
The Electric Heating Company Ltd, Unit 40, Block 5, Third Road, Blantyre Industrial Estate, Blantyre,
Glasgow, G72 0UP
Tel. [phone]
Fax. [phone]
[e-mail]
www.electric-heatingcompany.co.uk