Escea ST900 User manual

630001_11_Manual_Installation‐Service_ST900_NZ
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ST900 Direct Vent Gas Fireplace
Installation Manual
NEW ZEALAND EDITION
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Important:
The appliance shall be installed in accordance with;
• This installation instruction booklet
• Local gas fitting regulations
• Municipal building codes
• Electrical wiring regulations
• NZS 5261, Gas installations
• Any other relevant statutory regulations.
• Must be installed by a qualified person
Manufactured by: Escea Ltd, PO Box 5277 Dunedin NZ, Ph: 03 479 0302, e: [email protected]

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Note:
THERE ARE A FEW THINGS TO CONSIDER BEFORE INSTALLATION
• Cavity Dimensions and Clearances
• MUST be installed a 100mm minimum off the floor or nearest horizontal surface.
• Coupling of flue to fire
• Coupling of gas lines to fire
• Fixing the fire to cavity
• Electrical mains socket at rear left corner of the cavity, to accommodate the power
transformer
• Isolation switch for electrical transformer.
• Gas pipe placement to the front left of the cavity.
• The ST900 electronic control system is designed to work within the temperature range of
0°C to 60°C, with a humidity level that is non condensing. This is to ensure safe
operation of the electronic and gas control system.
If the fireplace is subjected to an environment with temperatures very close to or
exceeding these temperature limits (irrespective of if the fireplace is on or off at the time)
the fireplace may not start up until the temperature returns back to within the operating
range.
To remedy this the environmental temperature should be addressed and the fireplace
control system given time to adjust accordingly. The fireplace should then function
correctly.
It would be prudent to consider these operational limits during the installation planning
stage. Protecting the installed fireplace from low external ambient temperatures and cold
drafts through the use of approved modern building methods and materials will help
ensure that the required operating environment is maintained.
WARNING:
Failure to follow these instructions could cause a malfunction of the fire, which,
could result in death, serious bodily injury, and/or property damage. Failure to follow
these instructions may also void insurance cover and/or product warranty.
Installation:
Installation must be carried out by a registered installer who, on completion of the
installation, must issue a certificate of compliance, in accordance with national and/or local
codes. If a certificate of compliance is not issued then the Escea warranty may be void.
Warranty Repair and Annual Servicing:
Warranty repair work must be carried out by a recognised Escea gas fire technician. It is
recommended that recognised Escea Gas fire technicians are also used to carry out annual
servicing requirements (particularly during the warranty period). For contact details of
authorised Escea technicians in your area, please contact the retailer from whom the
appliance was purchased.
This product must be installed according to these instructions and in compliance with all
relevant building, gas fitting, electrical and other statutory regulations (eg. NZS 5261). Any
shortcomings in the appliance and flue installation will be the responsibility of the installer,
and Escea will not be accountable for any such failings or their consequences.
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Recommended Installation Process:
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The following diagram illustrates the steps required to install your gas fire, and the trades
required at each stage.
The sequence in which you choose to do these tasks will vary depending on your individual
scenario. Please read these instructions fully before proceeding with the installation. Leave the
installation of the fascia panels until the very end of the installation and
commissioning to avoid damage to the fascia panels.
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Builder
1.ConstructFrame(Section1.0to6.0)
Gasfitter
5.InstallFlue+FlueRestrictorifrequired(Section13.0)
6.Testfireandverifyflamepatternisacceptable
7.Cover‐upfireusingpackaging(Section16.0)
Electrician
2.InstallElectricalconnection(Section15.0)
Gasfitter
3.InstallGasPipe(Section7.0to8.0)
4.InstallFire(Section9.0to12.0)
Ensurethatyouleaveagapbetweenthestudworkandfire
chassistoacceptthewallliningifapplicable.
Builder
8.Gib/linechimneybreast
Gasfitter
9.CommissiontheGasFire(Section17.0)

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Contents:
1.0 Product Description
2.0 Creating the Cavity
3.0 Hearth and Floor Clearances
4.0 Wall Linings
5.0 Vertical Clearances
6.0 Corner Installations
7.0 Laying Gas Pipe
8.0 Connecting Gas Pipe
9.0 Power Supply
10.0 Fixing Fire to Wall
11.0 Removing the Firebox Glass
12.0 Installing the Flue system
13.0 Fitting the Flue Restrictor
14.0 Converting to Natural Gas
15.0 Placing the Fuel Bed
16.0 Checking Operating Pressure
17.0 Covering up the Fire
18.0 Commissioning the Fire (fitting the fascia)
19.0 Operating Instructions
20.0 Sounds and Smells
21.0 Annual Service Check
22.0 Installation Check List
23.0 Warranty Terms and Conditions

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100mm MAX Flue Diam.
203mm
1.0 Product Description:
The Escea ST900 decorative gas fire is designed to be built into a cavity. The appliance is
flued via Simpson Duravent Direct Vent Pro 5”x8” Flue, available from your Escea
distributor or retailer. The user will control their fire with the Radio Frequency (RF) remote.
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2.0 Creating the Cavity:
The dimensioned drawing below shows the size of opening that must be created to fit the
ST900. The wall directly above the fire should be finished / gibbed / lined after the fire has
been installed, unless there is an access hatch or the chase is open to the ceiling cavity,
which allows the flue to be installed after the wall has been lined.
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Note: It is not necessary to line the cavity, and it may be constructed with timber.
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Thewallandframeworkin
frontofthefluemustnot
exceed100mminthickness,
thisincludesgibboardor
anywalllinings.Thisisto
ensurethereisatleast
25mmgapbetweenall
flueingcomponentsand
anycombustiblematerial.
WallLining
FramingTimber

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Considerations for creating the cavity:
If installing the ST900 into a purpose built chimney breast or
chase which is not open to the roof space of the building, it
may be appropriate during the planning stage to consider the
installation of additional vents.
Heat otherwise lost through the outer skin of the fireplace and
flue system into the cavity of the chimney breast or chase
may be recovered into the room by placing two air vents in
the cavity or chase. By placing one vent at or just above floor
level and the other near the ceiling of the room will induce
natural convection and prevent heat build up in the cavity and
subsequently recover some of the heat into the room.
3.0 Hearth and Floor Clearances:
There should be at least 100mm between the bottom of the ST900 fire and any horizontal
surface below, for example hearths and floors.
3.1 Wall and Cabinet Clearances:
There must be a minimum of 100mm from the sides of the fascia to any protruding side
walls or cabinetry.
4.0 Wall Linings:
The wall board that lines the outside of this opening can be normal dry wall
(Plaster Board) and does not need to be non-combustible providing that it does not come
any closer to the fire than the dimensions shown in section 2.0. Note: The temperature of
the wall lining directly above the fire does get warm and hence may discolour paint
finishes that are susceptible to temperature damage or distort vinyl wall coverings.
5.0 Television Positioning Considerations:
It is becoming common practice for consumers to mount flat screen TV’s above their gas
fireplace.
Most TV manufacturers have specified in their instructions that the TV should not be
installed on, near or above a heat source. For this reason TV location decisions rest solely
with the householder and Escea will not be held liable for any adverse affects on a TV
located near to an Escea fireplace that may be caused by heat.
The drawings below are suggestions that may be used as a GUIDE for those consumers
who do decide to locate their TV above an ST900 gas fire. These drawings show ways to
reduce the amount of warm air rising off the fireplace and onto the TV.

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50 min
50 min
50 min
500 min 500 min
100 min
100 min
500 min
50 min
50 min
50 min
50 min
500 min
Mantle Mantle
Recessed TV Flush TV with
small mantle Mantle above fire Protruding fire
The material that the wall and mantle are made from will also affect the operating
temperature of the TV so it is the customers responsibility to satisfy themselves that their
TV mounting and mantle design will not exceed the listed maximum operating temperature
of their electronic goods.
5.1 Combustible Mantle Clearances:
The diagram to the right shows the minimum and
maximum allowable size for mantles or protruding
surfaces mounted above the ST900.
Note: Escea does not recommend placement of
items on the mantles shown in the diagram to the
right. This is because of the potential for items
placed on or above the mantle to be affected by the
heat rising from the appliance.

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5.2 Non-Combustible Mantle Clearances:
If the entire installation (mantle, wall and cavity) is
constructed from non-combustible materials, the
clearances to mantles may be as shown in the shaded
area.
6.0 Corner Installations:
If a cavity is to be created in a corner,
the following drawing gives the minimum
sizes.
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7.0 Laying Gas Pipe:
Gas pipe should be sized as per the requirements of NZS5261. The pipe sizing must be
sufficient to deliver the following volume of gas to the fire with all other gas appliances in
the home running at the same time;
ST900 = 20Mj/hr
8.0 Connecting the Gas Pipe:
Soft copper should be run directly to fire and connected onto the regulator with flare nut
(3/8” BSP thread). The regulator that is supplied with the fire MUST NOT BE REMOVED.
Removal of the regulator, or replacing it with one not intended for use with an Escea fire,
will void the limited appliance warranty.

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9.0 Power Supply:
Whilst the cavity is being created consideration should be given to appropriate location of a
standard 3 pin, 240V power outlet to accommodate the supplied power transformer. This
must be within 1.5m of the lower left hand side of the appliance.
9.1 Locating this plug within the cavity makes the installation very neat but the provision must
be made to be able to switch the power supply off and on (electrical isolation switch) and
must be accessible after the fire has been installed. This is normally done by means of a
separate switch located outside of the cavity and wired to the plug. This will allow service
technicians to isolate the power supply before performing service work on the appliance.
9.2 The supplied power transformer cord should be run, as shown below left, through the small
hole in the rear of the fire and connected to the panel mounted plug pictured below right.
9.3 This appliance will draw a maximum of 100mA from a 240V supply.
9.4 If desired, an optional battery-pack can be purchased which will allow the ST900 to run
without mains power, allowing the fire to run in the event of a power cut. This battery pack
uses 3x D cell batteries.
9.5 To install the battery pack simply place the pack in the bottom right of the fire as pictured
below and connect it to the plug which should be near the brass Copreci valve.
9.6 To access the battery pack,
remove the fascia (described in
section 18.2) and the battery
pack will be on the lower right
hand side.
9.7 As the ST900 draws a small
current when not in use, it is
recommended to remove the
batteries if the fire will not be in
use for long periods of time.

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10.0 Fixing the Fire to the base and wall:
It is a requirement that this fire be securely
fastened to the wall and base. Once the fire has
been pushed back into the correct position, use
wood screws (or other suitable fasteners) to fix
the fire to the cavity through each of the four
holes in the corners, as shown in the diagram to
the right. Note: It may be necessary to use
washers on the fasteners to securely fasten the
fire to the wall.
When fixing the fireplace in position ensure that you leave a gap between the fireplace
flange and the framing timber for the wall lining, which will be added at a later stage.
11.0 Removing the Firebox Glass:
Pull the four hooks shown below towards you and then away from the glass to release the
glass frame underneath the hook.
Do not operate the appliance if the glass has been broken, damaged, or the glass is
not properly positioned/hooked onto the appliance.
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Flue
25 mm 25 mm
25 mm
50 mm
50 mm
25 mm
25 mm 25 m
m
115 mm (REF)
30 Elbow
12.0 Installing the Flue System:
Ensure all flue components are Simpson Duravent Direct Vent Pro 5” x 8,” no other flue
types may be used.
Note: Consult section 12.13 to ensure correct length of flue is calculated.
There are two basic types of Balanced Flue System installations:
• Horizontal Termination
• Vertical Termination
Use the diagrams in sections 12.5, 12.6 & 12.7 to check if your proposed flue system is
acceptable. Section 12.9 will also need to be used to determine whether the flue terminal
location meets the requirements of NZS 5261. Then use Appendix A to work out the
quantities of the flue components that are required.
12.1 Any offsets in your flue configuration should be 45° where possible.
12.2 If your flue configuration has a horizontal run, there must be a minimum 1° inclination
(20mm vertical rise per 1m horizontal run) leading upwards towards the termination.
Do not install the flue with horizontal sections sloping down towards the termination.
This could cause the fire to operate incorrectly and possibly create an unsafe
condition.
12.3 The flue must maintain the following
clearances to combustible materials;
25mm from all sides and bottom of
the flue, and 50mm from the top of
the flue.
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12.4 If your flue configuration falls on or near a restriction zone boundary line in diagrams 12.5,
12.6 & 12.7, it may require the restriction value from either side of the boundary line to
achieve the correct flame aesthetic, this may vary from installation to installation.

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12.5 Vertical Only Flue Diagram:
Usethisdiagramto
determinewhat
percentageofflue
restrictioninrequiredto
ensuresafeandcorrect
operationoftheST900
decorativegasfireplace.

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12.6 Horizontally Terminating Flue Diagram:
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Usethisdiagramto
determinewhat
percentageofflue
restrictioninrequiredto
ensuresafeandcorrect
operationoftheST900
decorativegasfireplace.

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12.7 Vertically Terminating flue with a Horizontal Offset:
Usethisdiagramto
determinewhat
percentageofflue
restrictioninrequiredto
ensuresafeandcorrect
operationoftheST900
decorativegasfireplace.

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12.8 Standard Flueing Configurations:
The following flue components are available from escea in kitset form.
DVF‐H
DVF‐V

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12.9 Locating the Flue Terminal:
The flue terminal must be located using the information given in the following diagram and
table based on NZS 5261

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Table 16 – Minimum clearances required for flue terminals shown in figure 3
Ref. Item Minimum Clearances (mm)
Natural
draught Fan assisted
a Below eaves, balconies and other projections:
Gas appliances up to 50 MJ/h input
Gas appliances over 50 MJ/h input
300
500
200
300
b From the ground, above a balcony or other surface (see note 6) 300 300
c From a return wall or external corner (see note 6) 500 300
d From a gas meter (M) (see 2.5.4.9 for vent terminal location of
Regulator) 1000 1000
e From an electricity meter or fuse box (P) 500 500
f From a drain pipe or soil pipe 150 75
g Horizontally from any building structure (see note 6) or obstruction
Facing a terminal 500 500
h From any other flue terminal, cowl, or combustion air intake
(see note 6) 500 300
j Horizontally from an openable window, door, non-mechanical air
Inlet, or any other opening into a building with the exception of
Sub-floor ventilation:
Gas appliances up to 150 MJ/h input
Gas appliances over 150 MJ/h input up to 200 MJ/h input
Gas appliances over 200 MJ/h input
All fan-assisted flue gas appliances, in the direction of
discharge
500
1500
1500
300
300
500
1500
k From a mechanical air inlet, including a spa blower 1500 1000
n Vertically below an openable window, non-mechanical air inlet, or
Any other opening into a building with the exception of sub-floor
Ventilation:
Space heaters up to 50 MJ/h input
Other gas appliances up to 50 MJ/h input
Gas appliances over 50 MJ/h input and up to 150 MJ/h input
Gas appliances over 150 MJ/h input
150
500
1000
1500
150
500
1000
1500
NOTE-
(1) All distances are measured to the nearest part of the flue terminal
(2) Prohibited area below electricity meter or fuse box extends to ground level
(3) See 2.6.13.3 for restrictions on a flue terminal under a covered area
(4) See appendix G LPG Cylinder Locations, figure G2 and figure G3, for clearances required from a flue terminal to
An LPG cylinder. A flue terminal is considered to be a source of ignition.
(5) For gas appliances not addressed above, the design shall be certified by a suitably qualified engineer.
(6) Some gas appliances may be suitable for closer installation; refer to the manufacturer’s instructions.
12.10 Supporting the flue system:
Wall straps are required to fix the flue system in place for each installation. This will ensure
that no undue strain is placed on flue components once installed.
For a flue offset or horizontal run, it is recommended that wall straps be used to the flue
system with a spacing of 900mm between straps. Plumbers strapping / tape can be used to
connect the wall straps to the building structure where there are large distances between
the support point and the anchor point.
For vertical flue runs it is recommended that wall straps be used to anchor the flue system
with a spacing of 1200mm between straps.

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12.11 Sealing ‘through roof’ and ‘through wall’ penetrations:
For ‘through roof’ penetrations, use a Deck-tite flashing or equivalent to create a weather-
tight seal between the flue and the roof cladding.
For ‘through wall’ penetrations, this will require the use of a Wall Thimble. The Wall Thimble
will ensure you have suitable clearance from combustibles as well as sealing the
penetration. The section of the wall thimble installed on the external surface of the wall
should be sealed to the wall using a high temperature sealant such as a High Temperature
RTV Silicone or equivalent. Additional sealant is required to seal the Terminal Cap to the
external wall. A bead should be run along the edge of the Terminal that will be in contact
with the wall once installed.
12.12 Twist locking procedure:
Before connecting flue components, to ensure an airtight seal run a single 7-8mm bead of
High Temperature RTV Silicone or equivalent, on the ‘male’ end of the flue as shown in the
diagram below.
The four indentations located on the female end of the flue are designed to slide straight
onto the male ends of the adjacent flue length, by orienting the four flue indentations so
they match and slide into the four entry slots on the male ends.
Push the pipe sections completely together, then twist-lock one section clockwise
approximately one-quarter turn, until the two sections are fully locked.
Wipe off any excess sealant from the exterior of the flue joint.

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12.13 Points to note when planning the Installation of the Escea DV flue:
- This flue system cannot be cut to length. Correct lengths must be selected for each
installation. For a full list of available flue lengths, contact your Escea retailer.
- The listed length of the flue pipe is not the installed length. 1 ½” (38mm) needs to be
subtracted for each join to determine the installed length of each piece of flue pipe.
E.g. 48” length has installed length of 45”.
- All vertical measurements should be measured from the top surface of the fireplace casing
itself (not the fascia).
- When using horizontal flue runs, vertical measurements should be measured to the centre
line of the horizontal flue pipes.
- When using 90° elbows in the installation, use the diagram below to help calculate
installations horizontal and vertical distances. 1½” (38mm) will still need to be subtracted
from each join.
- If using a 45° offset in your installation, consult the chart below to select the required flue
length to give the desired offset. 1½” (38mm) will still need to be subtracted from each of
the 45° bends to allow for the joins.
- Adjustable lengths are available depending on stock levels. Contact escea for more
information.
Straight
Flue Length: Offset: Rise:
0” 5
5
/8” 15
3
/8”
6” 8
7
/8” 18
3
/8”
9” 10
7
/8” 20
5
/8”
12” 13” 22
5
/8”
24” 21
3
/8” 31
1
/8”
36” 29
7
/8” 39
3
/8”
48” 38
1
/4” 47
7
/8”

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13.0 Fitting the Flue Restrictor:
If your flueing configuration requires that you fit a flue restrictor
(see graph in section 12.5, 12.6 & 12.7 of this manual to find out if
your configuration requires a flue restrictor), follow the instructions
below.
First, prepare the Flue Restrictor by removing and discarding the
two inner rings to achieve 60%, 70% or 80% restriction and hand
bending the five tabs 90°.
Remove the firebox glass (if
fitted), and using a Phillips /
Pozi Drive screwdriver
remove the two screws
located inside the firebox as
shown.
Once the two screws are removed the baffle will
be free to slide down and out as pictured.
Ensure the firebox paint is not scratched and
that the baffle is not damaged.
Fit the flue restrictor by pushing it up into the flue
with the tabs facing downwards as shown. Push
it up into the flue until the tabs no longer
protrude into the firebox and it is securely
placed. If the restrictor is loose or will not stay in
position manipulate the five tabs to suit.
Once the restrictor is in place, replace the baffle
taking care not to damage or scrap paint, and
replace the two screws.