Everflo EDS90 Manuel utilisateur

EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

INSTALLATION AND MAINTENANCE INSTRUCTIONS

ISSUE 3 MAY 2015

01 EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

PAGE CONTENT

2 Introduction

3 Storage, Handling & Supply Requirements

3 Component Table

4 Sitting the unit

5 General Installation

7-8 Discharge Arrangement

9 Technical Specications: Slimline - Direct & Indirect

10 Technical Specications: Direct & Indirect

11 Technical Specications: Solar Direct

12 Technical Specications: Solar Indirect

13 Solar Coil Installation

4 Solar High Limit

15 S-Plan Wiring Schematics

16 Y-Plan Wiring Schematics

17 - 18 Pre-Plumbed Wiring Schematics

19 Pre-Plumbed Installation

20 Technical Specications: Pre-Plumbed

21 System Fit Installation

22 Technical Specications: System Fit

23 Commissioning & Servicing

24 Fault Finding & User Instructions

25 - 27 Guarantee - Terms & Conditions

28 Technical Specication

29 - 30 Specication & Performance

31 Benchmark

32 Commissioning Check Sheet

33 Service Record

INTRODUCTION

The EVERFLO STAINLESS UV Unvented cylinder is made from

Duplex Stainless Steel for excellent corrosion resistance.

EVERFLO STAINLESS UV has a strong rust-proofed steel case

and is highly insulated with environmentally friendly foam.

EVERFLO STAINLESS UV 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 ow rate

performance with minimum pressure drop to make EVERFLO

STAINLESS UV perform well in all areas, even those with poor

water pressure.

EVERFLO STAINLESS UV is KIWA approved to show

compliance with Building Regulations G3+L.

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 Hotwater Industry Council who manage and promote

the Scheme. Visit www.centralheating.co.uk for more information.

IMPORTANT NOTE TO

THE INSTALLER

Read these instructions before commencing installation.

Unvented cylinders are a controlled service as dened in the

latest edition of the building regulations and should only be

tted by a competent person.

The relevant regulations are: England and Wales – Building

Regulation G3, Scotland – Technical Standard P3, N Ireland –

Building Regulation Part F

After installation the Benchmark check list must be

completed and left, with these instructions, with the

householder for future reference.

IMPORTANT NOTE TO THE INSTALLER

Read these instructions before commencing installation. Unvented cylinders are a controlled service

as dened in the latest edition of the building regulations and should only be tted by a competent

person.

The relevant regulations are: England and Wales – Building Regulation G3, Scotland – Technical Standard

P3, N Ireland – Building Regulation Part F

After installation the Benchmark check list must be completed and left, with these instructions, with

the householder for future reference.

EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

STORAGE PRIOR TO INSTALLATION

EVERFLO STAINLESS UV should be stored in its original packaging

in an upright position in an area free from excessive damp.

Regulations G3+L.

HANDLING PRODUCT

The EVERFLO STAINLESS UV should be carried upright where

possible. Assessments of risks for carrying the cylinder should

be conducted. Use more than 1 person for carrying where

appropriate. Always follow latest guide lines for lifting techniques,

to avoid injury and damage to the product.

WATER SUPPLY

EVERFLO STAINLESS UV 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 ow 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 ow rate availability.

If measuring the water pressure, note that a high static (no ow)

mains pressure is no guarantee of good ow availability. In a

domestic installation 1.5 bar and 25 l/min. should be regarded as

the minimum. The maximum mains pressure that the inlet control

set can accept is 12 bar.

Consideration should be given to upgrading existing ½” (15mm)

cold mains pipework to a larger size if the recommended

minimum pressure/ow rate is not being achieved.

ELECTRIC SUPPLY

The EVERFLO STAINLESS UV requires 240 Volt electrical supply for

the standard Incoloy immersion elements. The electrical supply

to each immersion heater must be fused at 13A via a double

pole isolating switch to BS 3456. The cable must be at least

2.5mm2 heat resistant (85°C HOFR) sheathed ex complying to BS

6141:1981 Table 8.

UNPACKING THE UNIT

EVERFLO STAINLESS UV comes complete with the ttings required

to complete the installation. Please see over for component

content list.

High ow rate inlet control set

TS201-533

Temperature and pressure relief valve

TS202

Acetal tundish 15 x 22 mm

TS3

Incoloy long life

3 kW immersion heater

TS9 - DIRECT TS10 - INDIRECT

Two port valve

TS5

Dual thermostat

US201

High Limit thermostat

TS28

Installation &

Maintenance Instructions

Expansion Vessel

• 60, 90, 120 & 150 ltr units - 12 ltr vessel TS212

• 180, 210 & 250 ltr units - 18 ltr vessel TS219

• 300 ltr units - 25 ltr vessel

TS224

03 EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

COMPONENT CONTENT TABLE

Inlet Control set ••••••••••

Temp & Pressure relief valve • • • • • • • • • •

Tundish ••••••••••

Expansion vessel • • • • • • • • • •

Immersion Heater (Direct) • • •

Immersion Heater (Indirect) • • • • • • •

Two Port Valve • • • • • • •

Dual Thermostat • • • • • • •

Single High Limit Stat • • • • • •

Sensor pocket retaining bungs • • • •

Robo-Kit • • • •

TP9000 • • • •

TP5000 • •

Installation & Maintenance

Instructions ••••••••••

Slimline Direct Models (Electric)

Slimline Indirect Models

Direct Models

Indirect Models

Solar Direct Models

Solar Indiect Models

Indirect pre-plumbed

models - 1 zone heating

Indirect pre-plumbed

models - 2 zone heating

Solar indirect pre-plumbed models - 1

zone heating

Solar indirect pre-plumbed models - 2

zone heating

Direct Models (Electric)

Direct Solar Models (Electric + Coil)

Indirect Models (Single Coil)

Indirect Solar Models (Twin Coil)

EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

SITTING THE UNIT

EVERFLO STAINLESS UV 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 EVERFLO STAINLESS UV will reduce the outlet

pressure available by 0.1 bar for every 1m of height dierence. The

unit should be protected from frost. Particular care is needed if

sitting in a garage or outbuilding. All exposed pipework should be

insulated. EVERFLO STAINLESS UV must be installed VERTICALLY

on a at base capable of supporting the weight of the cylinder

when full. See technical specication section (page 27-28) for

weights. The minimum recommended cupboard size is 650mm

square.

NOTES:

The pressure reducing

valve, non-return valve and

expansion relief valve are

combined together in the

inlet control set.

On 60 – 180 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.

SCHEMATIC DIAGRAM

Access for maintenance of the valves should be considered.

Consideration should be given to position of discharge pipes

(tundish), drain valves - shall be positioned away from electrical

components.

The immersion heaters are 375mm long and care should be taken

to ensure that they can be withdrawn for servicing if required.

The discharge pipework from the safety valves should fall

continuously and terminate safely.

IMMERSION

HEATER

COLD

MAIN

ISOLATING

VALVE

PRESSURE

REDUCING

VALVE

NON

RETURN

VALVE

EXPANSION

RELIEF

VALVE

TUNDISH

TEMPERATURE

& PRESSURE

RELIEF VALVE

BALANCED

COLD

CONNECTION

COLD

INLET VIA

DRAIN

NON

RETURN

VALVE

BRONZE

PUMP

SECONDARY RETURN CIRCUIT

( 210, 250 & 300 L SIZES )

DUAL

STAT

2 PORT

VALVE

BOILER

FLOW

BOILER

RETURN

HOT OUTLET

EXPANSION

VESSEL

WITH WALL

BRACKET

05 EVERFLO UNVENTED HOT WATER CYLINDERS

GENERAL INSTALLATION

COLD MAINS PIPEWORK

Run the cold main through the building to the place where the

EVERFLO STAINLESS UV is to be installed. Take care not to run the

cold pipe near hot water or heating pipework so that the heat

pick-up is minimized. Identify the cold water supply pipe and t

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 ow as much. Do not use “screwdriver slot” or similar

valves. Make the connection to the cold feed of the cylinder

and incorporate a drain valve. Position the drain valve no higher

than the cold inlet to ensure sucient draining of cylinder when

required. 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 ow. Select a suitable position

for the expansion vessel. Mount it to the wall using the bracket

attached to the vessel. Use suitable ttings capable of supporting

full vessel weight (and with appropriate consideration to wall

material). Ensure the pre-charge in the vessel is set at 3 Bar.

Connect the expansion vessel to the cold feed pipework between

the inlet control set and the cold inlet on the cylinder. Ensure that

the top of the vessel is accessible for servicing.

CONNECTING TO THE CYLINDER

All of the pipework connections on the cylinder are 22mm

compression and supplied complete with gland nuts and olives, 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

end 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 lling/commissioning, ensure

all connections are completely watertight. Note: No control or

isolation valve should be tted between the expansion relief valve

and the storage cylinder. The relief valve connections should not

be used for any other purpose.

(expansion vessel not to scale)

Turn to

test

Cold

Mains In

Balanced Cold

Connection

Outlet to Cylinder

Expansion

Relief to

Tundish

Expansion

Relief

Connection

EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

BALANCED COLD CONNECTION

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 set.

HOT WATER PIPEWORK

Run the rst 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-o pipework to a practical minimum so that the time

taken for the hot water is as quick as possible. Where monobloc

mixing taps and showers are used, these should be installed to

comply with the Water Supply (Water Fittings) Regulations 1999.

If these devices are supplied with un-balanced supplies there

should be single check valves installed at both inlets, to stop over

pressurising of either supply.

PRIMARY COIL CONNECTIONS FOR INDIRECT UNITS

For Solar input models refer to pages 13-14 before making any

connections.

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 ow, reheat times

are not eected. The primary circuit can be open vented or sealed,

with up to a maximum pressure of 3.5 bar. 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 eective

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. Connect the two

port zone valve ( indirect only ) into the primary ow pipework.

The direction of ow arrow should be towards the primary ow

connection.

SECONDARY CIRCULATION

EVERFLO STAINLESS UV can be used with secondary circulation.

An appropriate WRAS approved bronze circulator should be

used in conjunction with a non-return valve to prevent backow.

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 o-peak electricity taris.

A secondary return boss is tted as standard on 210, 250 & 300 ltr

units. On smaller sizes, tee into the cold feed pipe above the drain.

IMMERSION HEATERS

Only immersion heaters with a thermal cut-out may be used. To

help ensure this, the immersion heaters have a special 1¾” thread.

They are rated at 3kW at 240V and are of a low noise Incoloy

construction.

They have both a thermostat and a high limit cutout. Please order

the correct replacement via ourselves; tting non-approved

immersions may aect your guarantee. When tting, ensure the

‘O’ ring is positioned correctly on the head of the immersion

heater and lubricate before tting. Fit it by hand until almost

home then tighten gently as the ‘O’ rings will seal easily. The

electrical supply to each immersion heater 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 ex 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.

ELECTRICAL CONNECTIONS

Complete the wiring – use the appropriate wiring diagrams on

page 15 - 18.

07 EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

DISCHARGE ARRANGEMENT

Position the inlet control group so that the discharge from both

safety valves can be joined together via a 15mm end feed Tee (see

diagram above). 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 tted

as close as possible to, and lower than, the safety device, with

no more than 600mm of pipe between the valve outlet and the

tundish. The tundish should be positioned away from electrical

devices.

Any Discharge should be visible at the tundish. The tundish should

be located such that any discharge is visible. In addition, where

discharges from safety devices may not be apparent, e.g. 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.

Diagram of a typical discharge pipe arrangement (extract from

Building Regulation G3)

Note: The discharge will consist

of scalding water and steam.

Asphalt, roong felt and

non-metallic rainwater goods

may be damaged by such

discharges.

Note: D2 pipe from tundish is

now allowed to be installed in

soil stacks within premises. This

activity is not recommended

by Kingspan as discharge

from T&P may continue for

long periods of time. It is the

installer’s responsibility to

ensure the discharge pipework

can support the discharge for

prolonged periods.

If used follow guidance on

mechanical seal without water

trap given in G3 Building

Regulations.

As discharge can be in

excess of 90oC discharge into

plastic pipework is also not

recommended.

EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

The discharge pipe (D2) from the tundish should:

A) Have a vertical section of pipe at least 300mm long, below the

tundish before any elbows or bends in the pipework.

B) Be installed with a continuous fall of at least 1 in 200 thereafter.

The discharge pipe (D2) from the tundish should be of metal or

other material that have been demonstrated to be capable of

withstanding temperatures of the water discharged.

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. discharge pipes between 9m and 18m 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 ow resistance. Refer to diagram 1, Table 1 and

the worked example. An alternative approach for sizing discharge

pipes would be to follow BS6700 Specication for design

installation, testing and maintenance of services supplying water

for domestic use within buildings and their curtilages.

The discharge pipe (D2) 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:

a. To a trapped gully with the end of the pipe below the xed

grating and above the water seal.

b. 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.

c. Discharges at a high level; e.g. in to metal hopper and metal

down pipe 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 systems that would

collect such discharges.

d. 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 gure 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

09 EVERFLO STAINLESS UV

UNVENTED HOT WATER CYLINDERS

EVERFLO STAINLESS UV 

SLIMLINE DIRECT

EVERFLO STAINLESS UV

 SLIMLINE INDIRECT

25.0˚

40.0˚

45.0˚

35.0˚

15.0˚

40.0˚

45.0˚

15.0˚

120.00

“ F PTRV BOSS

D A B C G

F D A B C G

22mm HOT

DRAW - OFF

22mm SECONDARY

RETURN (not always tted.

See table)

22mm COLD FEED WITH

DIP PIPE TO DEFLECTOR

IN BOTTOM OF CYLINDER

22mm HOT

DRAW - OFF

22mm SECONDARY

RETURN (not always tted.

See table)

“ F PTRV BOSS

22mm COLD FEED WITH

DRY STAT POCKET

DIP PIPE TO DEFLECTOR

IN BOTTOM OF CYLINDER

120.00

SECOND IMMERSION HEATER

(not always tted. See table)

30.0˚

50.0˚ 50.0˚

10.0˚

25.0˚

40.0˚

45.0˚

35.0˚

15.0˚

40.0˚

45.0˚

15.0˚

120.00

“ F PTRV BOSS

D A B C G F D A B C G

22mm HOT

DRAW - OFF

22mm SECONDARY

RETURN (not always tted.

See table)

22mm COLD FEED WITH

DIP PIPE TO DEFLECTOR

IN BOTTOM OF CYLINDER

22mm HOT

DRAW - OFF

22mm SECONDARY

RETURN (not always tted.

See table)

“ F PTRV BOSS

22mm COLD FEED WITH

DRY STAT POCKET

DIP PIPE TO DEFLECTOR

IN BOTTOM OF CYLINDER

120.00

SECOND IMMERSION HEATER

(not always tted. See table)

30.0˚

50.0˚

10.0˚

25.0˚

40.0˚

45.0˚

35.0˚

15.0˚

40.0˚

45.0˚

15.0˚

120.00

“ F PTRV BOSS

D A B C G F D A B C G

22mm HOT

DRAW - OFF

22mm SECONDARY

RETURN (not always tted.

See table)

22mm COLD FEED WITH

DIP PIPE TO DEFLECTOR

IN BOTTOM OF CYLINDER

22mm HOT

DRAW - OFF

22mm SECONDARY

RETURN (not always tted.

See table)

“ F PTRV BOSS

22mm COLD FEED WITH

DRY STAT POCKET

DIP PIPE TO DEFLECTOR

IN BOTTOM OF CYLINDER

120.00

SECOND IMMERSION HEATER

(not always tted. See table)

30.0˚

50.0˚

10.0˚

CODE HEIGHT DIAMETER A B C D G

EDS60 673 478 175 210 N/F N/F 483

EDS90 1048 478 175 210 610 N/F 858

EDS120 1236 478 175 210 710 N/F 1046

EDS150 1424 478 175 210 810 N/F 1234

EDS180 1674 478 175 210 910 N/F 1484

EDS210 1987 478 175 210 1100 1500 1797

25.0˚

40.0˚

45.0˚

35.0˚

15.0˚

40.0˚

45.0˚

15.0˚

120.00

“ F PTRV BOSS

D A B C G

F D A B C G

22mm HOT

DRAW - OFF

22mm SECONDARY

RETURN (not always tted.

See table)

22mm COLD FEED WITH

DIP PIPE TO DEFLECTOR

IN BOTTOM OF CYLINDER

22mm HOT

DRAW - OFF

22mm SECONDARY

RETURN (not always tted.

See table)

“ F PTRV BOSS

22mm COLD FEED WITH

DRY STAT POCKET

DIP PIPE TO DEFLECTOR

IN BOTTOM OF CYLINDER

120.00

SECOND IMMERSION HEATER

(not always tted. See table)

30.0˚

50.0˚ 50.0˚

10.0˚

CODE HEIGHT DIAMETER A B C D F G

ENS60 673 478 340 380 440 395 N/F 483

ENS90 1048 478 340 380 440 395 N/F 858

ENS120 1236 478 340 380 440 395 N/F 1046

ENS150 1424 478 380 420 520 520 N/F 1234

ENS180 1674 478 380 420 520 610 N/F 1484

ENS210 1987 478 380 420 520 710 1500 1797

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