JM Iron Bark 850 Install
Installation Instructions
Jetmaster 850 Gas Log
Installation Instructions Jetmaster 850 Gas Log
Jetmaster gas logs are fuel effect appliances intended for use in a
fireplace suitable for the burning of wood. It is recommended that
the Jetmaster gas log be placed in a properly installed Jetmaster
Convector firebox in order to ensure an adequate draught and
greater efficiency. The Jetmaster open fire is an approved open fire
to burn wood. The following size fireboxes are available for the
Type 1 burner to be inserted into. The firebox can be installed into
an existing fireplace subject to the chimney being the appropriate
size and in sound condition. The firebox can also be installed from
new with a gather and flue.
Location Requirements
1. The fireplace construction must be non- combustible and in
accordance with the current Building Regulations for chimney and
fireplaces intended for solid fuel use.
2. The flue and/or chimney should be tested and proven to have
an adequate updraft which shall be sufficient to remove all waste
products of combustion. A minimum cross-sectional area of 40
000-sq. mm is required with a minimum chimney flue height of 3.6
meters. The installer must satisfy himself that the fireplace is
functioning properly and a smoke test is recommended.
3. In cases where a twin walled metal flue is used and provided
such flue shall comply with the clearances specified in AS 2918
and AS5601 or manufacturer instructions in respect of clearances
to combustibles.
4. A space of 40mm between the side wall of the fireplace and
grate is required.
5. In cases where a metal flue is used, such flue shall comply
with the standards relating to grade, quality and thickness as are
6. An AGA approved flue cowl with a minimum cross-section of
40 000-sq. mm shall be affixed to the top of the flue or chimney.
Refer to AS5601 Clause
850 LOW
850 MK 4 gas log Burner. Suitable for model fireboxes 850 - 1050
IMPORTANT: An authorised person in accordance with the
manufacturer instructions should only carry out installation of this
appliance. All relevant codes including AS5601/A.G. 601 and
regulations laid down by the gas supply authorities, uniform building
regulations and the requirements of local municipal Authorities
must be observed.
Model Type 1
Decorative Gas Log Fire
DATA PLATE: Refer to date place for information in respect of gas
pressure, consumption and gas type, Natural or LPG. The data place is
located to the side of the grate.
7. When the fire is installed into an existing firebox/fireplace,
the damper plate must be permanently fixed in the fully open
position. Refer to AS5601 Where a “Jetmaster” firebox
is supplied as part of the Jetmaster Gas Log Fire Model 850 mark
4 appliance, the damper has been factory set and sealed and is not
to be adjusted.
8. It should be noted that the Code AS2286 (Space heating
appliances-secondary guards) requires a dress guard to be affixed
to the appliance or fireplace.
9. Ventilation- An opening to outside with a minimum free
ventilation area of 400 Square centimeters shall be provided for
each decorative gas log fire. Note: The chimney in which the
appliance is installed is not to be considered as ventilation
opening. Refer AS5601 Clause and
10. The appliance shall be installed into a fireplace with a minimum
opening of 850 width and 300mm depth 500mm height and shall be
no greater than 1050 mm width and 400mm depth and 530mm
height. (Note diagram indicating firebox sizes.)
11. Combustible materials to be no closer than 100mm either side
of fireplace opening and no closer than 150mm above the opening.
The firebox should have a non- combustible hearth in front of the
Installation Instructions Jetmaster 850 Gas Log
Fitting the Gas Grate
Lighting Instructions
1. Check unit is suitable for intended gas supply.
Locate control knob on right hand side of valve. Depress and turn
control knob (FIG 1) to the
PILOT position (FIG 4). Depress
the control button and ignite with piezo ignitor (FIG 2) whilst
keeping control knob firmly depressed for 20 seconds. Check that
pilot stays lit. If it goes out repeat ignition procedure.
2. The position of the gas control and inlet is on the right hand
side and is 3/8" B.S.P. female connection. Check that the chimney is
clear prior to fitting.
3. In an existing fireplace or Jetmaster firebox (if being used) drill
a 15mm hole through the right hand side of the fireplace(as you
face it) at a point of 85mm from the base and 85mm from the rear
wall(if providing stop cock in firebox). 85mm from front wall (if
stop cock is outside firebox).
Depress and turn control knob anti-clockwise from
position to the
ON position (FIG 5). The burner will not
ignite if the rocker switch is depressed in the OFF position (FIG 3).
To light main burner press rocker switch to ON position (FIG 3).
4. Cut and debur both ends of pipe. Fit the end to the gas supply
point and turn on for approximately 5 seconds to clear the pipe of
any dirt or grit. Fit the other end to the gas unit.
5. The regulator is included on the S.I.T. control for Natural or LPG gas.
Depress rocker switch to OFF position. (FIG 3)
6. Turn on the gas and check all connections for leaks using soapy
water or approved method. Fix any leaks.
Main burner can also be turned off by the use of control knob. This
is done by turning control knob clockwise to
PILOT position
(FIG 8). Control knob will need to be turned back to
position (FIG 5) to light main burner.
7. Possible carbon deposition may occur on the appliance
incorporating live fuel effect.
Adjusting Pressure, Pilot
and Low Fire
Pilot must be burning.
Control knob is in the
ON position. (FIG 5)
Rocker switch is in the OFF position. (FIG 3)
Wall switch can now be activated.
1. All settings are set to operate at appropriate pressures (see data
plate). Test point is located on gas valve.
2. Check low fire if adjusted correctly.
Important! Wall switch can only be activated if rocker switch is in
off position.
3. The pressure can be measured on the gas valve and the
regulator adjusted to the appropriate pressure (see data plate
affixed to side of the appliance.)
Depress and turn control knob clockwise from
(FIG 5) or
PILOT position (FIG 4) to the
ON position
OFF position
(FIG 6).
Turn high / low flame knob to obtain high or low fire (FIG 7).
Fig 1
Control knob
Fig 4
Fig 5
High / Low
flame knob
Fig 7
Fig 2
Fig 6
i clockwise
i clockwise
Fig 8
Pietzo Igniter
Fig 3
Rocker Switch
Low flame
High flame
Installation Instructions Jetmaster 850 Gas Log
Ceramic Log Positioning
for Gas Fires
• It is important to follow the log recommended
• Log NO. 6, 10, 9 and 4 must be pinned to rear log
with pins provided.
2 . L O C ATE L O G NO. 1 : This is the largest log that is
• Not doing so can adversely effect the operation of
the appliance.
positioned at the rear of the grate. Two locating pins are positioned
• This diagram shows the recommended log
positions, when viewed from above.
underside to position in place.
at the rear of the burner. The large log has two holes on the
1. LOC ATE 4 CERAMIC COALS: Four ceramic
3 . LOCATE LOG NO’S 2 & 3: Two front log NO’S. 2 &
coals are supplied with the burner base. These coals must be laid in
3 are supplied to fit into the space between the metal frame and
the position indicated on the drawing with the taller coals on the
the ceramic base. These logs do not cover the front burner ports
ends and smaller coals in-between.
but are designed to deflect the front flame back into the fire.
Only use logs supplied
by the manufacturer as
other logs may effect
combustion performance.
Installation Instructions Jetmaster 850 Gas Log
4. LOCATE LOG NO. 4. Place it on the left side of the
6 . L O C ATE L O G NO. 9 . This log is placed on the rear
rear log. Charred end facing inwards.
log in the centre of the burner. Charred effect facing toward the left
LOCATE LOG NO. 5. This log is placed with the thinner edge
of the burner. The front rests on logs 2 & 3 on the join.
on the smaller coal. The charred effect is facing towards the front
LOCATE LOG NO. 10. This log is located on the rear log in
of the burner. The whole log is positioned on the burner base.
the position where the log reduces in height. The charred end is
located on the front log 3 with the charred effect facing toward the
right hand side.
5 . L OC ATE LO G NO. 6. Place this log on the right hand
side of the burner on the rear log in front of the pilot. Charred end
• It is important to follow the log recommended
facing inwards. The left hand side of the log is positioned between
• Log NO. 6, 10, 9 and 4 must be pinned to rear log
the metal uprights on the side of the grate.
LOCATE LOG NO. 7. The charred effect of the log is
positioned on the smaller coal in the centre of the burner on the
right hand side.
LOCATE LOG NO. 8. This smaller log is placed on the top of
log NO. 2 and rests on the left hand coal in the centre of the
Only use logs supplied
by the manufacturer as
other logs may effect
combustion performance.
with pins provided.
• Not doing so can adversely effect the operation of
the appliance.
• This diagram shows the recommended log
positions, when viewed from above.
Installation Instructions Jetmaster 850 Gas Log
Commissioning Procedure
Installed correctly the burner should not emit any fumes into the
room. The following procedure should be undertaken to test that
the unit is operating correctly.
1. After unit has been operating for a short period a smoke
match, smoke tube, carbon dioxide analyser or similar should be
directed at the top opening of the unit.
2. This procedure should be undertaken with the following
conditions in the room:
• Open or closed windows
• Operation of extraction/exhaust fans, range
hoods etc
• Operation of other gas appliances
• Operation of optional appliance fan at any speed.
3. Should any spillage be detected the cause must be rectified
before allowing commissioning of unit.
E. The gas grate is recommended for use in a Jetmaster firebox
which has been designed to ensure a proper draw and to eliminate
emission spillage.
2. Initially the Jetmaster log fire may burn with a slightly blue
flame. After approximately 20 minutes the fire will settle down and
burn with a yellow flame.
3. As with all gas appliances your gas log fire should be regularly
serviced. We recommend once each year. Contact your nearest
Jetmaster authorised agent to provide service. The routine for an
authorised person to follow has been set out in an attached leaflet.
4. PLEASE NOTE: Only logs provided by Jetmaster should be used
with this appliance.
5. DO NOT place articles on or against this appliance.
DO NOT use or store flammable materials near this appliance.
DO NOT spray aerosols in the vicinity of this appliance whilst
it is in operation.
Primarily a decorative appliance not certified as a space heater.
User Instructions
6. The appliance is a live fuel effect product designed to operate
with luminous flames and may exhibit slight carbon deposition.
1. WARNING NOTE: Properly installed and operated this
appliance will not leak gases. Persistent fume emission must not be
tolerated. If fume emission does exist, then the following immediate
action should be taken.
A. Open doors and windows to ventilate room.
B. Turn the fire off.
C. Check for flue blockage and clear if necessary.
D. Do not attempt to relight the burner until the cause of the
emission has been identified and rectified. Should assistance or
advice be required contact nearest agent or Jetmaster.
Provided the appliance has been correctly installed according to
instructions, Jetmaster guarantee the cost of replacing parts and
the labour in connection therewith for a period of 12 months
from the date of installation. Should the appliance be subject to a
service contract the replacement of the parts and the service
involved in such replacement shall be at no charge to the owner
and the Warranty shall be extended to 3 years (provided of
course the appliance had been continuously serviced by an
approved Jetmaster agent).
For further information contact Jetmaster Australia
10 Martin Avenue, Arncliffe NSW 2205 T: 02 9597 7222 F: 02 9597 7622
E: W:
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