Escea ST900 User manual

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ST900 Direct Vent Gas Fireplace
Installation Manual
NZ / AUS EDITION
Important:
The appliance shall be installed in accordance with;
• This installation instruction booklet
• Local gas fitting regulations
• Municipal building codes
• Electrical wiring regulations
• AS/NZS 5601, Gas installations
• Any other relevant statutory regulations.
• Must be installed by a qualified person
FOR SERIAL NUMBERS 43000 AND ABOVE.
Manufactured by: Escea Ltd, PO Box 5277 Dunedin New Zealand,
Ph: [phone], email: [email protected] www.escea.com

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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 80°C without batteries and 0°C to 60°C with batteries, 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.
•This fire is not intended as an insert (it must be flued in accordance with flue instructions
see section 12).

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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. AS/NZS 5601).
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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PRODUCT SPECIFICATION
MODEL NAME
ST900
Description of Appliance
Decorative Gas Fire
Star Rating
N/A
A/NZ Approval No.
AS 4558-2011 & NZS/AS4558-2013
Gas Type
Natural
ULPG
Propane
Gas input (MJ/h)
High
18 MJ/h 21 MJ/h 21 MJ/h
Low
12.9 MJ/h
15.40 MJ/h
15.40 MJ/h
Heat
output (kW)
High
3.0 kW 3.5 kW 3.5 kW
Low
2.10 kW
2.50 kW
2.50 kW
Maximum Inlet Pressure
5.0kPa
5.0kPa
5.0kPa
Minimum Inlet Pressure
1.2kPa
2.5kPa
2.5kPa
Operating Pressure
High
0.96 kPa
2.30 kPa
2.30 kPa
Low
0.52kPa
1.30kPa
±0.1kPa
1.30kPa
±0.1kPa
Injector Size
Ø1.9mm
Ø1.25mm
1.3mm
Pilot injector
#37
#23
#23
Appliance Dimensions (mm)
Width
902.4 mm
Height
546.0 mm
Depth
352.2 mm
Weight
Kg
45 kg
Ignition System
Electronic Ignition to pilot system
(Maxitrol GV60)
Ignition Activation
10 secs (approx)
Flame Safeguard
Thermocouple – magnetic cartridge
Thermal Efficiency %
60% (EN 613:2000 6.11)
Electrical Supply
Consumption
6.0V DC
2.3W @ 0.01A 230V
Remote controls
Yes
Timers
Yes
Clock
Yes
Function lock / child
Yes
Temperature control
Yes
Connections
Electric
6.0V DC transformer and/or 4 x AA Cells
Gas
½ “ BSPT Male lower left of fireplace
Flue
Type
Simpson Duravent (Balanced)
Flue Size
205 mm Outer, 125 mm Inner
Spigot
Location
Rear and centre at 60° to vertical
Data badge location
Lower left of fireplace

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Recommended Installation Process:
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.
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 ULPG or Propane
15.0 Changing Operating Pressure to ULPG/Propane
16.0 Placing the Fuel Bed Media
17.0 Covering up the Fire
18.0 Commissioning the Fire (fitting the fascia)
19.0 Remote Instructions
20.0 Sounds and Smells
21.0 Annual Service Check
22.0 Installation Check List
23.0 Wiring Diagram

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FERRO / MOLARIS FASCIA
Go to section 2.1
VELO FASCIA
Go to section 2.2
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.
2.0 Creating the Cavity:
The cavity specifications vary depending on fascia type. The dimensioned drawings in the
following sections show 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.
The wall and framework in front of the flue must not exceed 100mm in thickness, this
includes plaster board or any wall linings. This is to ensure there is at least 25mm gap
between all fluing components and any combustible material.
ONLY AVAILABLE
IN NEW ZEALAND

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2.1 Cavity for Ferro / Molaris Fascias
Note: It is not necessary to line the cavity,
and it may be constructed with timber.
Continue on to section 2.4
2.2 Cavity for Velo Fascias
Note: It is not necessary to line the cavity,
and it may be constructed with timber.
Continue on to section 2.4
2.4 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.
For Velo fascias, the fireplace should be recessed 12mm into the cavity.
ONLY AVAILABLE
IN NEW ZEALAND

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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
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.
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.

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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.
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 table gives the minimum
sizes in millimetres.
Fascia Type
A
B
C
D
Ferro
380
910
835
1670
Velo
392
940
862
1724
7.0 Laying Gas Pipe:
Gas pipe should be sized as per the requirements of AS/NZS 5601. 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;
NG = 18Mj/hr
Propane/ULPG = 21Mj/hr

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8.0 Connecting the Gas Pipe:
Copper should be run directly to the fireplace and connected onto the Dormont hose with a
1/2” BSP thread nut.
S900T
S900T
Cavity
CavityCavity
Alternate gas
supply route
9.0 Power Supply:
Your fireplace has been supplied with a transformer and a battery back-up provision-
4 x AA Cells; located in top of the receiver (control) unit.
9.1 If you are using a power transformer:
Whilst the cavity is being created consideration should be given to appropriate location of a
standard 3 pin, 240V power outlet to accommodate the power transformer. This must be
within 1.5m of the lower left hand side of the appliance.
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.
The 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.
This appliance will draw a maximum of 2.5A (fused) from a 240V supply.
If a power transformer is plugged into the receiver, it will become the default power source.
The batteries (if fitted) will only be consumed if there is a mains power outage.
S 900T
Cavity

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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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280.0
280.0
174.8
Ø265mm hole required in
wall to fit wall thimble
317mm
317mm
200mm max-
120mm min
Optional Wall Thimble
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 AS/NZS 5601. 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.
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.
Ø203mm

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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:
Use this diagram to
determine what
percentag
e 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 fi
replace.

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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 AS/NZS 5601

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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.