Aarrow Fires SF 50 User Manual
INSTALLATION & OPERATING INSTRUCTIONS
The
Stratford Multifuel
Sf & Si Stoves
Stratford Sf 50 Convector
PLEASE RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE
Congratulations on your choice of an Aarrow Stove.
More than 20 years experience has been put into the
development of our Stratford Multifuel to ensure ultimate
performance and years of trouble free enjoyment.
Every detail on the fire has been carefully engineered and
designed which is why we are so confident in the reliability of
our product.
Should you have any questions about our Stratford Stoves that
are not covered in this manual, please contact the Aarrow dealer
in your area, or call our Technical support department on
01308 427234
Flaming Good Fires!
© COPYRIGHT July 2001
Aarrow Fires Ltd
This booklet has copyright & may not be
copied in whole or part or be used for any
purpose other than that for which it is
supplied without express written consent
from Aarrow fires Ltd.
2
The
Stratford Sf & Si
Installation and Operating
Instructions
Contents
Operating Instructions
1 Introduction - The Principle of the Fire 5
2 Checklist 6
A - Stratford Sf
B - Stratford Si
3 Fire Bed 7
4 Firebrick Lining for Sf only 8
5 Throat Inspection 9
6 The Air System 10
A - Interlock
B - Multi-Purpose Operating Tool
7 Glass/Trim 12
8 Door Adjustments 13
9 Spare Parts List 14
A - Stratford Sf
B - Stratford Si
10 Accessories 16
11 Fuels 17
12 Lighting the Fire 18
13 Overnight burning 19
14 Ash removal 20
15 Cleaning 21
16 Safety 22
Installation Instructions
17 General 23
18 Handling 23
19 Hearth 23
20 Combustible Materials 23
21 Air For Combustion 24
22 Builders Opening/Chimney Breast 24
23 Chimney 24
24 Installing the Fire 25
A - Stratford Sf
B - Stratford Si
25 Flues & Chimneys 27
26 Water Connections 30
27 Final Check 31
28 Guarantee 32
29 Customer Registration 32
30 Service Record 33
3
WARNING
To All Solid Fuel Users
PETROLEUM COKE
SOME OF WHOSE BRAND NAMES ARE
"CALCO", "PETROCOKE" OR "WONDERCO"
MUST NOT
TO USE THIS FUEL WILL INVALIDATE THE APPLIANCE
IF IN DOUBT CONTACT THE SOLID FUEL ASSOCIATION
TELEPHONE FREEPHONE 0800 600000
BE BURNED IN THIS APPLIANCE
WARRANTY
THE USE OF SPARE PARTS OTHER THAN THOSE
SUPPLIED BY AARROW FIRES LTD WILL INVALIDATE
THE APPPLIANCE GUARANTEE.
4
Operating Instructions For
The Stratford Multifuel Sf & Si.
1. INTRODUCTION - THE PRINCIPLE OF THE FIRE
Your Aarrow Fire is built to the highest standard of craftsmanship using the best materials and the most modern
equipment available. It is a highly efficient and sophisticated piece of machinery and when properly installed and
operated it should provide a lifetime of heating satisfaction.
Safety is the most important consideration when installing your fire. If not properly installed and operated a
house fire may result. You should check your local Building Regulations and conform to all relevant fire safety
standards.
Aarrow Fires produce a variety of appliances that range from the traditional in appearance to the ultra modern,
all bristling with "High tech" features.
Model types include simple room heaters, convectors, integral boiler models and inset units. Your Aarrow fire is
constructed from twin wall steel strengthened where necessary. Cast iron is used where appropriate for long life.
All fire doors are fitted with special high temperature ceramic glass panels through which the fire can be viewed.
All units are fitted with a cast iron grate to give full multifuel facility and positive de-ashing.
All models except integral boiler models and insets are lined with heat reflective panels which ensure complete
combustion and provide a good heat store to even out fluctuations in burning.
An internal throat plate produces turbulence to encourage secondary combustion and directs the flue gas around
the whole upper firebox before allowing it to escape to the chimney.
The primary air for burning enters the ash pit chamber beneath the grate, controlled by the air inlet mechanism or
by the thermostatically controlled damper where fitted.
The provision of two inlets gives a wide range of primary air/secondary air, under draught/over draught
combinations. The optimum settings will only be established by experience in the firing the appliance, and will
depend on type of fuel, the position of the appliance in the house, condition of chimney etc.
Aarrow fires are also fitted with an "air wash" so called because it provides a curtain of high speed preheated air
in front of the glass to help keep it clean and to provide secondary air/over draught.
Solid Fuel.
To burn solid fuel efficiently the main source of combustion air should be under draught entering the ash pit
chamber. The air wash can be opened a little to allow sufficient air to keep the glass clean and provide secondary
air for afterburn.
Wood
Wood burns very efficiently on a bed of its own ash and an over draught. It will also burn successfully with an
under draught, and on appliances fitted with a thermostat this should be the main source of combustion air in
order for the thermostatic control to be effective.
Mixed Solid Fuel and Wood
When burning mixed fuels the grate should be set to the coal burning position with combustion air entering
equally from above the fire through the air wash, and below through the ash pit door.
Diagrams and notes on the features of the different types of fires are set out in the sections following this one.
5
2. CHECK LIST
Inside the appliance you should find the following.
Conv. Boil. Conv. Boil. Conv. Boil. Conv. Boil. Conv. Boil. Conv. Boil.
Grate Bars
Fire Bed Surround
Refractory Lining
230x197
Refractory lining
230x138
Refractory lining
230x115
Rear Brick Locking
Channel
Fuel Retainers
Throat Plate
Flue Spigot
Hot Plate
Ash Pan
Operating Tool
Thermostat*
Instructions
Stratford Sf
30
Stratford Sf
50
Stratford Sf
70
Stratford Sf
90
Stratford Si
40
Stratford Si
60
7 7 9 9 11 11 11 11 7 7 11 11
7 7 9 11 3 4
4 4 3 5
4 2
1
1 1
3 3 3 3 3 3 3 3 3 3 3 3
1 1 1 1 1 1 1 1 1 1 1 1
1(5'') 1(5'') 1(5'') 1(5'') 1(6'') 1(6'') 1(6'') 1(6'')
1(5'') 1(5'') 1(5'') 1(5'') 1(6'') 1(6'') 1(6'') 1(6'')
1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1* 1* 1* 1*
1 1 1 1 1 1 1 1 1 1 1 1
* Only the knob, the thermostat is already fitted to the stove
The model and Serial No. of your fire can be found stamped into the casing, centrally just below the bottom edge
of the fire door aperture.
A - Stratford Freestanding - Sf
Rear flue
Top flue
Hot plate
B - Stratford Inset - Si
Flue outlet socket
Multifuel grate
Flow tapping
Sensor phial
Return tapping
Thermostat
control unit
Multifuel grate
Ashpan
Thermostat
damper plate
Firebrick
Ashpan
Air wash control
Fire door
Fuel retainers
COAL
MULTIFUEL
GRATE
WOOD
CONTROL
Ashpit door
Operating tool
Boiler unit
Air wash control
Fire door
Fuel retainers
Multifuel
Grate
Control
Front trim
Ashpit door
Operating tool
6
3. FIRE BED
Grate
The grates in the Stratford Sf & Si Multifuel units comprise a series of reciprocating cast iron bars seated on a
pivoted "comb". All bars in the grate are identical, but every other bar is turned through 180 degrees, with the
ends of the bars marked "H" sitting on the high sections of the comb, and the ends marked "L" sitting on the low
sections.
Assembling the Grate (Fig.1)
To assemble the grate, fit bars to low sections of the comb first, inserting end market "H" into rear channel with
groove on underside of bar located on upstand tab, and then lowering end marked "L" onto the low section of the
comb. The upper bar is fitted in a similar manner, but with the end marked "L" inserted in the rear channel, and
the end marked "H" seated on the high section of the comb.
"HIGH" GRATE BAR
COMB
FITTING BARS TO COMB
"LOW" GRATE BAR
COMB EXTENSION SHAFT
ASSEMBLED GRATE
Figure 1
Grate bar Replacement
After extended use it may be necessary to replace some of the grate bars. Periodic inspection of the bars is
recommended and the removal of any nails or wire that may be present after burning wood. All the grate bars in
each appliance are identical and can easily be lifted out after removal of the fuel retainers.
Remove damaged grate bars and replace with casting of the same type, fitting as per instruction above. (Check
Identification letters on the casting when reordering).
Riddle Lever for Sf only
(Fig 2a)
The riddle lever gives effective de-ashing, and also allows the grate to be set in the coal burning or wood burning
position, as indicated on the right hand side of the appliance.
For Si
use the operating tool provided. Rotating the end shaft of the comb with the operating tool gives effective
de-ashing, and also allows the grate to be set in the coal or wood burning position, as indicated on the right hand
side of the appliance (Fig 2b).
COAL
WOOD
COAL
WOOD
GRATE SETTING
INDICATORS
COMB EXTENSION
OPERATING TOOL
Figure 2a Figure 2b
7
4. REFRACTORY LINING FOR Sf CONVECTOR MODELS ONLY
Warning: Refractory linings are very fragile, handle with extreme care.
Stratford Sf Multifuel Convectors are lined with reflective panels, consisting of a combination of rectangular
linings, which sit on the rear ledge, and side linings which sit on the landings. A throat plate is sited above the
grate, so shaped that it rests on steel guides and between the side linings.
If the refractory linings have not been fitted to your appliance prior to despatch, they should be fitted as follows:
Stratford Sf30 & Sf50 (see Fig 3 & 4)
SF30 CONVECTOR
SF50 CONVECTOR
Figure 3 Figure 4
• Remove front fuel retainer bars.
• Set the two linings on the side ledges on either side of the firebox.
• Set the rectangular linings on the upper surface of the grate bar channel at the rear of the firebox.
• Fit the throat plate with the tab at the front marked "Throat plate" pointing down, with the projecting lugs on
the sides of the throat plate resting on the top of the baffle landings and the bend at the back resting against
the rear refractory lining
• Replace the front fuel retainer bars.
Note: Neither the rear linings nor the side linings are "handed" and both faces are suitable for direct contact
with the fire.
Stratford Sf70 & Sf90 (see Fig 5)
SM70 Convector / SM90 Convector
Figure 5
8
• Remove front fuel retainer bars.
• Set the four linings on the side ledges on either side of the firebox. See Fig 5.
• Set the three 197mm x 230mm rectangular linings on the upper surface of the grate bar channel at the rear of
the firebox.
• To keep the back linings in position, locate the stainless steel locking channel centred on the top edge of three
rear linings.
• Fit the throat plate with the tab at the front marked "Throat plate" pointing down, with the projecting lugs on
the sides of the throat plate resting on the top of the steel guides, and the bend at the back resting against the
rear firebox lining.
• Replace the front fuel retainer bars.
Note: Neither the rear linings nor the side linings are handed and both faces are suitable for direct contact
with the fire.
5. THROAT PLATE INSPECTION
The throat plate for all fires type consists of a profiled steel plate with "drop down" facility for inspection
purposes.
To "drop" the throat plate (Fig 6), engage the operating tool behind the downstand tab marked "throat plate" and
pull the plate frontward until its forward lugs drop into the cut-away at the front of the side panel. Check the
upper surface for soot, ash build-up, etc. Reverse the procedure to return the throat plate to the working position.
Warning: If the fire is operated with the throat plate in the down position the air wash will not operate
effectively.
THROAT PLATE GUIDE
THROAT PLATE
OPERATING TOOL
Throat Plate position for Si only
Figure 6
9
6. THE AIR SYSTEM
Flue Outlet/Hot Plate only for Sf
The flue outlet is packed together with the firebrick lining and multi-purpose tool, inside the appliance. The hot
plate comes fitted on the top of the fire.
To fit flue outlet:
• Select the desired position (top or rear outlet)
• Smear a very thin layer of suitable sealant or fine adhesive fire cement around the edge of the flue cut-out in
the appliance
• Fit outlet and lock into place by rotating anti-clockwise
• Similarly fit the hot plate to the unused position
• Clean off surplus sealant
Air Inlet Controls
Stratford Multifuel Sf & Si fires have two air inlets.
1. The air wash system (so called because its pre-heated high speed air washes across the inner face of the door
glass, keeping it clear), which provides over draught, and
2. The primary air inlet providing under draught to the base of the fire chamber.
Primary Air
On all Multifuel units primary air enters the appliance through the gap between the body and the ash pit door.
The width of the gap is controlled by rotating the knob (if hot, with the operating tool) anti-clockwise to increase
the air inlet, clockwise to reduce the air inlet, or to seal the ash door completely.
On units fitted with a thermostat, partial opening of the ash door will over-ride and negate the thermostatic
control.
Note: Opening or part opening of the ash door is controlled by the "interlock" device located in the front of
the unit (refer to INTERLOCK section on page 9)
Thermostats
Stratford Sf
Integral Boiler units have a thermostatically controlled rear air inlet. The damper plate at the back
of the appliance regulates the amount of under draught entering, depending on the setting of the thermostat
control knob (located at the bottom rear of the right hand side of the unit) and the temperature of the water
transmitted through the sensor phial in the water jacket.
Stratford Si
units have a thermostatically controlled side air inlet. The damper plate at the side of the appliance
regulates the amount of under draught entering, depending on the setting of the thermostat control knob (located
at the top of the left hand side of the unit) and the temperature of the water/air transmitted through the sensor
phial in the water/air jacket.
Stratford Sf & Si
: with the ash door fully shut, the settings range from 0 (fully anti-clockwise) a shut-off setting
at which the damper will shut off the under draught completely, causing the fire to die down and in time go out,
to 8 (fully clockwise) the highest setting at which the appliance will burn fiercely and produce very high outputs.
Note: The area around the thermostat, both inside at the back of the firebox and externally, must be cleared
of ash and other debris regularly.
For setting instructions refer to "Checking Thermostat" in the installation instructions.
On units fitted with a thermostat, partial opening of the ash door will over-ride and negate the thermostatic
control.
Air Wash
The air wash has an internal sliding plate with slots, housed in a cover plate, and is located above the fire door.
Sliding the control shaft to the right as far as will go achieves the fully open position. Sliding it the left will shut
off the air inlet slots. The operating tool should be used to tap the control shaft to the desire setting. Even when
all the slots are completely shut a "bleed" of secondary air will be maintained ensuring that inflammable gases
are burnt off.
10
Disassemble Air Wash (see fig. 7)
The air wash may be disassembled for cleaning or adjustment to achieve this the following procedure should be
followed when the fire is cold and unlit.
• Support Air Wash cover with one hand
• Move cover up by smartly tapping the bottom with a hammer.
• Remove assembly from appliance.
• Clean and/or adjust.
• Refit using reverse procedure.
AIRWASH
HAMMER
FULLY CLOSED
POSITION
FULLY OPEN
POSITION
Figure 7
A - Interlock
Stratford Sf & Si fires are fitted with an "interlock" system. A situation where the fire door is closed and the ash
door is open may lead to serious overfiring which could damage the appliance. Correct use of the doors and
interlock system will ensure that this does not happen.
Operation is as follows:
A pivoted lug prevents closure of the fire door, unless the ash door has been shut first.
When the fire door is shut the ash door knob can be turned anti-clockwise by up to 95 degrees creating a variable
gap between the top of the ash door and the body, through which primary combustion air can enter the appliance.
Note: In order to turn the ash door knob sufficiently for the catch to release and permit the ash door to be
opened fully THE FIRE DOOR MUST BE OPENED FIRST.
SUMMARY: Sequence of operations
• Close ash door.
• Close fire door.
• Set primary air gap (if required).
• Open fire door.
• Open ash door.
B - Multi-purpose operating tool
Your Aarrow fire comes with a multi-purpose operating tool which is used for the emptying of the ash pan and
opening the ash pit door (see fig.8 overleaf). For the Si only i
setting the grate to the wood or coal positions as marked on the side of the appliance.
11
t is also used for de-ashing the appliance and for
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