Esse EW User manual

ESSE Engineering Ltd, Long Ing, Barnoldswick, Lancashire BB18 6BN
Tel: [phone] Fax: [phone] Email: [email protected] Website: http://www.esse.com
Model:
Serial Number:
INFORMATION FOR USE WHEN ORDERING SPARES: 08/08
ESSE Cooking Stove
INSTALLATION INSTRUCTIONS
ODEL: EW & EWB
Technical Info mation EW EWB
Nominal heat output kW 9.7 10.5
Boiler heat output kW — 2.6
Combustion air requirement m3/h 40 55
Air vent size cm230 50
Weight of appliance Kg 370 375
inimum chimney draught Pascals 12 12
ean flue gas temperature °C 250 255
Flue gas mass flow g/s 18.5 13.7
This appliance is not suitable for installation in a shared flue system
ADDITIONAL SERVICEABLE PARTS
1. Brick Linings
THIS APPLIANCE MUST BE COMMISSIONED BY A HETAS REGISTERED ENGINEER OR A COMPETENT
PERSON. THE WARRANTY CARD MUST BE RETURNED TO ENSURE GUARANTEE VALIDITY
HETAS Approved

2 3
The Cooking Stove - Fig.1 Dimensions and boiler tapping
Oven door
900mm
Loading door
Flue access doorAsh door
Hob bolster lids
Secondary
air control
(left to open)
Oven damper
control
(pull out to open)
Primary air control
(left to open)
600mm (Top casting)
85mm
Flue
centre
7mm 7mm
90mm
430mm
900mm
460mm 230mm
Flue regulator
271mm
(feet)
416mm 16”
Lid clearance
Any adjacent combustible material should be far enough away from the cooking stove so as not to
rise 60°C above the room temperature when the cooking stove is in operation. If necessary, any
adjoining walls should be protected from the effects of heat.
EW EWB
From side (mm) 300 200
From back (mm) 500 400
SAFE CLEARANCES FRO CO BUSTIBLE ATERIAL
Note: The space beneath the appliance is not a fuel storage area.
GENERAL SAFETY INFOR ATION
In the UK, the installer has a responsibility under the Health and Safety at Work Act 1974 to provide for
the safety of persons carrying out the installation. Attention is drawn to the fact that fire cement is
caustic and hands must be washed thoroughly after use. The appliance is heavy ( ax 380Kg) and care
must be taken during handling. Although the appliance does not contain asbestos products, it is
possible that asbestos may be disturbed in existing installations and every precaution must be taken.
These instructions give a guide for the installation of the appliance but in no way absolve the
installer from responsibilities to conform to British Standards, in particular BS8303, BS6461 and
BS5449, relating to the installation of solid fuel appliances (including wood and peat) and codes of
practice for central heating installations in domestic premises. The installation should also comply
with local Building Regulations and Local Authority Bye-Laws.
Outside of the UK, the installer must comply with all local, national & european standards that apply.
It is also recommend that a smoke alarm and appropriate fire safety equipment such as a fire
extinguisher and fire blanket are installed in the kitchen as a safety precaution.
CONTENTS
Safety Notes Page 2
Dimensions and clearances Page 3
Flue specification Page 4
Flue draught Page 5
Flue performance Page 6
Installing the appliance Page 7
Hot water system Page 8
Plumbing information Page 9
Parts Page 10
Non combustible base
Non combustible material
Non combustible material
Note: The illustration above provides essential boiler tapping measurements and will help when
selecting the location of the cooker.

FLUE DRAUGHT READING
Two flue draught readings should be taken, one with the cooking stove at minimum firing rate and one
at maximum firing rate. The flue draught test hole must be drilled in the flue pipe as close to the
cooking stove as possible and before any flue draught stabiliser.
MINIMUM
The cooking stove should be lit and allowed to warm the flue thoroughly. The air controls can then be
set so that the cooking stove burns on a low setting. Allow the burning rate to become steady. The flue
draught reading should now be taken with the primary air intake closed and the secondary air control
fully open. The minimum flue draught required is 12 pascals (0.05” w.g.).
MAXIMUM
The primary air intake can now be opened to allow the cooking stove to burn at maximum rate. Give
the cooking stove some time for the burning rate to become steady and then close the primary air
intake. ake sure the secondary air control is fully open and take a flue draught reading immediately.
The minimum flue draught required is 12 pascals (0.05” w.g.).
The maximum is 24 pascals (0.1” w.g.).
FLUE DRAUGHT
The chimney can be checked, before the cooking stove is installed, with a smoke match. If the
chimney doesn’t pull the smoke it may suggest the chimney needs attention (see the Flue Diagnosis
Table below and the flue performance diagrams on page 6).
4 5
Note: This test is only a guide as an apparently poor flue may improve once the cooking stove is
installed, lit and the flue is warmed. Once the cooking stove is installed, a flue draught reading
should be taken.
High flue draught symptoms: fire difficult to control, fuel will not last, cooking stove too hot, cooking stove damage, chimney fire
Cause
External wind conditions combined with chimney terminal
Remedy
Fit stabilizer cowl. Fit flue draught stabilizer.
Low flue draught symptoms: difficult to light and smoke coming into the room.
Cause
Cold chimney
Chimney too short
Down draught
Chimney diameter too large
Chimney obstruction
Restricted air supply
Remedy
Line the chimney
Extend the chimney
Relocate/extend chimney terminal. Fit an anti down
draught cowl
Line the chimney
Clear/sweep the chimney
Check for competing draughts (other chimneys,
extractor hoods/fans). Fit an air vent if the room is
sealed.
The successful operation of this appliance is entirely
dependent on the adequate performance (pull) of
the chimney or flue to which it is connected. A
partially blocked or dirty flue can have disastrous
implications for an otherwise perfectly installed
ESSE as can be seen here looking at the underside
of the hotplate from 2 identical ESSEs.
A) Has been used regularly for over a year
following simple ESSE maintenance guidelines
(supplied with this appliance) and with a clean flue
drawing correctly.
B) Was just 6 weeks old when the picture was
taken and shows how quickly tar deposits will build
up if the flue performance is poor and clogged with
old soot as it was in this case.
THE I PORTANCE OF A HEALTHY FLUE
Good draft & clean flue
Efficient wood burning, clear
flue ways, minimal soot and
no tar deposits.
Poor draft & dirty flue
Inefficient wood burning,
blocked flue ways, lots of
soot and tar deposits.
A
B
lIt should have an internal cross section of no
less than 320 cm.sq (200mm dia.) If a flueliner
is used, it should be 6” diameter and be
made of suitable material for burning wood).
The flue diameter is 6”.
lVoids in the chimney should be avoided, as
these will prevent a steady flue draught. The
appliance flue pipe should pass beyond the
narrowing of the chimney.
lBe terminated at least 1m above roof level
so that the chimney does not terminate in a
pressure zone.
lIf the appliance is installed as a freestanding
appliance, it should not support any part of the
chimney.
lBe connected to this one appliance only.
lBe free from cracks, severe bends, voids
and obstructions.
lNew chimneys must be in accordance with
local regulations.
lThe chimney must be capped to prevent
ingress of rain.
lA flue/chimney access point may also be
required so that the state of the chimney can
be checked and any fallen soot removed.
lExternal flues must be insulated to prevent
heat loss.
lDo not fit an extractor fan in the same room
as the appliance.
lBe a minimum 4.6m high from hob chimney level
to pot.
Note: The chimney / flue to which this appliance is being connected must be swept and examined
for soundness prior to installation. Remedial action should be taken if required, seeking expert
advice if necessary. Where the chimney is believed to have served an open fire installation it is
possible that a higher flue gas temperature from a closed appliance may loosen deposits that
were firmly adhered, with the consequent risk of flue blockage. It is therefore recommended that
the chimney be swept a second time within a month of regular use after installation.
The successful operation of the cooking appliance relies on the adequate performance of the chimney
to which it is connected. The following chimney guidelines must be followed:
CHI NEY AND FLUE INFOR ATION

FLUE CONNECTION
The flue pipe used to connect the appliance to the chimney is 6” (150mm) in diameter. (A 5”-6” adaptor
is supplied to connect to the flue box of the range.
The flue connection is on the top of the appliance, in the centre at the back.
I PORTANT INSTALLATION NOTES
1. The installation must allow access for adequate chimney sweeping and flue cleaning.
2. Avoid using bends greater than 45° to the vertical. All flue pipe sections should be as close to the
vertical as possible.
3. All joints in the flue system must be effectively sealed.
4. All flue sockets must face upwards. On completing the installation of the appliance, the chimney,
hearth and walls adjacent to the cooker must conform to local or national regulations currently in force.
In the United Kingdom, the appropriate sections of the Building Regulations must be conformed to.
5. Air inlet grilles should be positioned so that they are not liable to blockage.
6. An air extraction device shall not be used in the same room as the appliance unless adequate
additional ventilation is provided.
7. A flue cleaning door should be fitted to provide access for cleaning the flue and chimney.
8. Check the appliance for soundness of seals between castings and main components and that all
supplied parts and fittings are correctly fitted.
9. Ensure the appliance is left operational, the heating system correctly ballanced and hand over the
operating instructions and operating tools supplied.
10. Before leaving the installation demonstrate the operation of the appliance to the user. Explain all
controls and flue way access for cleaning.
7
FLUE STABILISER
PRESSURE ZONES, POSITION & DOWN DRAUGHT
A flue stabiliser can be fitted to reduce the draught through the cooking stove if the flue draught is
too high. The flue stabiliser should be fitted in the same room as the cooking stove, be the same
size as the flue pipe and be fitted no closer than 700mm to the flue outlet of the appliance.
INSTALLING THE COOKING STOVE
6
1) Pressure and suction zones created by wind
3) Potential causes of down draught
2) The position of chimney outlets
Note: The chimney / flue to which this appliance is being connected must be swept and examined
for soundness prior to installation.

8 9
A) There are two connections, both 1” BSP ale on the left hand side. Follow general notes below.
B) The EWB or DE-LUXE boiler is plain mild steel and capable of running a radiator in addition to
domestic hot water.
C) General Notes on Water System: -
1) The cooker will produce hot water at differing rates depending on how it is operated. Heating
control is manual, no thermostat is fitted.
2) The system must be designed to cope with loads between the maximum and minimum
output. When the central heating load is turned off there must be sufficient gravity load to absorb 2.6
kW for periods when the oven is being used for cooking, e.g. Domestic hot water plus gravity
operated radiator.
3) An indirect storage cylinder is essential for domestic hot water supply, irrespective of whether the
water supply is hard or soft. inimum capacity 30 gallons. Cylinder should be as close to cooker as
possible.
4) The central heating circuit may be gravity circulation, but a pumped system is preferred.
To allow heat from the boiler to be absorbed should there be a pump stopage on an accelerated
circuit, the primary domestic supply must be gravity operated.
5) Installation as a central heating system alone, i.e. without a domestic supply, is not
recommended as the boiler will produce heat when the cooker is in use, irrespective of central
heating demand, and primary absorption must be provided.
6) Whichever system is chosen the layout must follow established heating engineering practice.
To avoid trapping air in the boiler a 1” BSP connection must be used on the flow and return
tapping, and any reduction in pipe size thereafter being made on a vertical rising pipe. The cooker
must be level when fitted and the flow pipe must rise from the boiler. A drain cock must be fitted
on the lowest point of the return pipe and a vent to atmosphere at the highest point of each circuit.
7) The cylinder and pipe work should be lagged to avoid heat loss.
8) The static head must not exceed 60 feet of water.
9) A drain cock should be fitted to the lowest part of the circuit.
10) The total water capacity of the boiler is 4 litres.
11) A heat leak radiator should be fitted to absorb any excess heat that may be produced.
12) The system must be properly vented and a double-feed indirect cylinder to current BS 1566
standard is required on a combined hot water and central heating system.
Typical DHW Gravity System
OPEN VENT
FEED & EXPAN ION
CI TERN
HEATING FLOW
4000 BTU
GRAVITY RAD
HEATING RETURN
DRAIN COCK AT THE LOWE T POINT
COLD WATER
CI TERN
DRAW OFF
COLD FEED
DRAW COCK
CYLINDER 35-40 GAL
28MM (11/4”) FLOW
& RETURN
PIPE TAT
RETURN
125 MM (5”) FLUE-INTO
150 MM (6”) CHIMNEY
INJECTOR TEE
OPEN VENT
FLOW
HOT WATER
HEATING COOKER
HOT WATER SYSTE

10 11
1 Upper Door Handles
2 Lower Door Handles
3 Fire Guard
4 Cast Fire Door
5 Ash Door
6 Magnet Catch
7 Temperature Clock
8 Ceramic Glass Window
9 Flue Access Door
10 Oven Door Liner
11 Fuel Guard
12. Stainless Baffle - no longer in use
13 Flue Access Plate
14 Ashpan
15 Grate
16 Oven Tray
17 Lower Slider
18 Cast Shelf Supports
19 Door Hinge Assembly
20 Wire Shelf
21 Steel Baffle
22 Upper Slider
23 Flue Heat Shield
24 Hand ail
25 Flue estrictor Guide
26 Side Panel
27 Hand ail Bracket
28 Hotplate
29 Cast Top
30 Flue estrictor
31 Stove Body
32 Bottom Heat Shield
33 Legs
34 ear Heat Shield
35 Side Panel
36 Cast Flue Box and Door
37 5” to 6” Adaptor
38 Bolster Lid Assembly
39 Fire Bricks
40 Cast Iron Door
41 Charcoal Spray Can
SPARE PARTS