NTGAS HQ-04 User guide

2
INDEX
1 TECHNICAL INSTALLATION INSTRUCTIONS 3
2 MAIN DIMENSIONS 3
3 TECHNICAL DATA 3
4 INSTALLATION 5
4.1. PLACE OF INSTALLATION 5
4.2. ELIMINATION OF COMBUSTION RESIDUES 5
4.3. CONNECTION TO THE GAS INSTALLATION 5
4.4. OPERATION CONTROL 6
5. TECHNICAL MAINTENANCE 6
6. INSTRUCTIONS FOR REPLACEMENT OF COMPONENTS 7
6.1. PARTS LIST 7
6.2. REPLACEMENT OF THERMOCOUPLE 7
6.3. REPLACEMENT OF PILOT BURNERS 7
6.4. REPLACEMENT OF THERMOELECTRIC SECURITY VALVE 7
7. GAS CONVERSION 7
7.1. REPLACEMENT OF BURNER INJECTOR 8
7.2. ADJUSTMENT OF PILOT BURNER TO NEW GAS TYPE 8
7.3. PRIMARY AIR REGULATION 8
7.4. BURNER REGULATION 9
8. PROBLEMS AND SOLUTIONS 9
9. USE AND MAINTENANCE INSTRUCTIONS 9
9.1 START-UP 9
9.1.1. SWITCHING ON THE BURNER 9
9.1.2. SWITCHING OFF THE BURNER 9
10. TECHNICAL MAINTENANCE 10
11. EC CERTIFICATE 11

3
1. TECHNICAL INSTALLATION INSTRUCTIONS
This manual contains all information needed to install and maintain this device appropiately. Keep this manual in a safe place
for consultation in future, if necessary.
Installation and connection as well as conversion to another type of gas must be done by qualified staff following the warnings
indicated on the labels sticked on the device and packing.
This equipment is made for professional use and for qualified personnel only.
In case of breakdown please contact an authorized technician and use only original spare parts.
2.MAIN DIMENSIONS
Figure 1.
3.TECHNICAL DATA
Chart 1: Dimensions
MODEL EXTERNAL DIMENSIONS WEIGHT
Lenght (mm) Depth(mm) Height (mm) (Kg)
HQ04 623 355 230 20
623
230
355

4
Chart 2: Categories. Gases and pressures.
COUNTRIES CATEGORY GAS PRESSURES
AT, CH, CZ, DK, EE, ES, FI, GB, GR, IE, IT, LT,
LV, NO, PT, RO, SE, SI, SK I2H G20 20 mbar
DE, LU, PL, RO I2E
BE, FR I2E+ G20 20 (25) mbar
NL I2L G25 25 mbar
CY, DK, EE, FR, HU, IT, LT, NL, RO, SE, SI I3B/P G30, G31 30 mbar
AT, CH, CY, CZ, DE, FR I3B/P G30, G31 50 mbar
BE, CH, CY, CZ, ES, FR, GB, GR, IE, IT, LT, PT,
SI I3+ G30, G31 28-30, 37 mbar
CY, DK, EE, FI, IT, LT, RO, SE, SI, SK II2H3B/P G20 / G30, G31 20 mbar / 30 mbar
AT, CH, CY, CZ, SK II2H3B/P G20/ G30, G31 20 mbar / 50 mbar
CH, CY, CZ, ES, GB, GR, IE, IT, LT, PT, SI, SK II2H3+ G20 / G30, G31 20 mbar / 28-30, 37 mbar
NL, RO II2L3B/P G25 / G30, G31 25 mbar / 30 mbar
DE, RO II2E3B/P G20 / G30, G31 20 mbar / 50 mbar
FR II2E+3B/P G20 / G30, G31 20 (25) mbar / 30, 50 mbar
BE, FR II2E+3+ G20 / G30, G31 20 25) mbar / 28-30, 37 mbar
(1): Provided with a nozzle according to ISO 228-1
Chart 3: Injector’s diameters (hundredths of mm) and consumptions.
MODEL HQ-04
DIAMETER 1/100 mm
Main Burner Liquid Gas GLP G30/G31 at 28-30/37 mbar 160
Main Burner Liquid Gas GLP G30 at 50 mbar 130
Main Burner Liquid Gas GLP G31 at 50 mbar 150
Pilot burner Liquid Gas GLP G30/G31 (3ª Family) 020
Main burner Methane Gas G20 at 20mbar 240
Pilot burner Methane Gas G20/G25 (2ª Family) 035
GAS CONSUMPTIONS (1) (2) Max Min
10.0 kW 4.46 kW 5.5 kW 6.1 kW
G 20 (Nm3/h) 1.06 0.47 X X
G 25 (Nm3/h) 1.23 0.55 X X
G 30 (kg/h) at 28-30 mbar 0.64 0.35 X X
G 31 (kg/h) at 37 mbar 0.63 0.34 X X
G 30 (kg/h) at 50 mbar 0.86 X 0.57 x
G 31 (kg/h) at 50 mbar 0.85 X x 0.55
(1): All consumptions include the pilot burner
(2): Hi consumption.

5
Chart 4: Nominal pressure, maximum and minimum.
GAS TYPE PRESSURE (mbar)
NOMINAL MINIMUM MAXIMUM
G 20 18
20 15 17 23 25
G 20 + G 25 20/25 15 23/30
G 30/G 31 30 25 35
G 30 + G 31 28-30/37 20/25 35/45
4.INSTALLATION
Installation must to be done by qualified persons following the installation norms that are in force locally and according to the
instructions of the gas supplying company.
Install the device in a draughty place to avoid unacceptable concentrations of substances harmful to health.
Remove the protective stainless steel plate to have access to the control of the components.
Before proceeding with the installation and start-up of the device, read attentively the instructions of this manual and in
particular the norms related to security.
This device is intended for professional use and it has to be used by trained persons.
Before connecting the device, check first:
a) That all removable parts are in the correct position. If some part moved during transport, first readjust it.
b) That the support bench is levelled correctly.
4.1. PLACE OF INSTALLATION
Install the device in a location where adequate combustion and ventilation air are available. Respect the norms that are in
force concerning this matter locally.
A minimum of 150mm should be maintained between the fryer and any combustible material.
Install this device individually or integrated in other NT Gas kitchen furniture.
4.2. ELIMINATION OF COMBUSTION PRODUCTS
This is a Type A1device. The device should not necessarily be connected directly to an exhaust duct outwards.
Considering this device’s working characteristics, consumption and working temperature, it’s necessary to install the device
near to a ventilation hood to assure a perfect elimination of combustion gases. Combustion residues should be eliminated
directly or indirectly by a hood to prevent unacceptable concentrations of residues harmful to health.
This device needs an AIRFLOW of 100m3/h for a correct combustion and elimination of combustion residues.
4.3. CONNECTION TO THE GAS INSTALLATION
Before connecting the device, first consult the gas supplying company to check whether your gas network supplies the
necessary pressure and flow in order to ensure a proper operation of the device.
Connection of the device to the general gas installation must always be done by an authorized technician.
The general installation should be provided with a stopcock. Each device should have its own stopcock in order that the rest of
the installation does not remain disabled in case of failure of any of the other devices installed jointly.
This appliance is equipped with a stainless steel front panel that protects the gas valves and the elements that regulate the inlet
of combustion air. Do not cover this part either entirely or partially in order to ensure a proper combustion and not to alter the
combustion air inlet. Leave the upper part uncovered so as to allow a correct elimination of combustion residues.
The device is connected with a male input piece, ½” diameter, according to ISO 7-1, see fig. 1.
The gas type for which this device is configured is indicated on the front panel, next to the gas connection.
Check the gas pressure at the inlet, since pressure loss by the gas network is possible. If necessary, install a pressure
regulator or stabilizer to prevent the inlet pressure to the fryer to exceed the pressure indicated on the plate or on chart 4 of
these instructions.

6
Both rigid and flexible pipes can be used. If rigid pipes are used, the gas valve must be installed as close as possible to the
connection of the device. In case of flexible tubes, only approved and standardized tubes may be used. (We recommend to
use flexible stainless steel tubes (AISI 316) manufactured according to norm UNE 60713.)
Connect the device as follows:
a) Make sure that there is no flame around.
b) Connect the device to the gas network according to the norms in force and check with a manometer or soapy water
that the connection is leakproof. Never use a flame to verify if there are leaks. Should there be a gas escape
anywhere, close the gas valve and repair. Test again until the connection is leakproof.
4.4. OPERATION CONTROL
- Control of the nominal caloric consumption.
When the installation is new, or when the machine is converted to a different type of gas than that for which the device was
prepared for initially and after each maintenance operation, an authorized installer of the gas supplying company should check
the nominal caloric consumption of the device.
The nominal caloric consumption for each burner is indicated on chart 3.
Install a meter to measure the gas flow according to the values indicated on chart 3.
- Control of the input pressure
Check whether the device is regulated for the type of gas to be used. Verify the information on the characteristics plate of the
device or on chart 2 of these instructions. In case the gas type is different, make the conversion following the indications of
chapter 7.
Measure the pressure of the device with a “U” manometer with a minimum resolution of 0,1 mbar at the gas input connection. If
the pressure is not between the values indicated on chart 5, do not start the device. Report your gas supplying company on
this.
- Primary air control.
Charachteristics of the burner flame.
The flame has to be stable, dark blue and should hardly have yellow extremities. If you observe that the flame has yellow
extremities, this means that primary air is failing. Regulate the primary air flow by moving the air regulation tube towards the
burner. Otherwise, if the flame comes off the burner or the flame base is not stable, move the air regulation tube in the opposite
direction.
- Operation control.
Start up the machine according to the instructions.
- Check the tightness of the gas circuit.
- Check the ignition and quality of the flame.
5.TECHNICAL MAINTENANCE.
The maintenance of this device has to be done by an authorized installer, by the manufacturer or by the gas company.
It’s advisable to do a general control of the device at least once a year. Check:
a) The tightness of the gas circuit. Replace joints if necessary.
b) The ignition system or pilot burner and thermocouple.
c) Do not grease the gas valves, as mentioned under point 6.4.
d) If flexible tubes are used, check the expiry date and replace if necessary.

7
6.INSTRUCTIONS FOR REPLACEMENT OF COMPONENTS.
This operation may only be done by an authorized installer or by the manufacturer’s staff.
6.1. PARTS LIST.
Most important parts to assure a correct working of the device are:
-PILOT BURNER
-THERMOCOUPLE
-THERMOELECTRIC SECURITY VALVE
Before you replace any component, always make sure that the general gas valve is closed. Also make sure there is no flame
around.
6.2. REPLACEMENT OF THERMOCOUPLE
Proceed as follows:
a) Unscrew the hexagonal screw and loosen the control to remove the stainless steel front panel.
b) Loosen the nut that fixes the thermocouple to the thermoelectric security valve.
c) Loosen the clamp that attaches the thermocouple to the gas mixing tube.
d) Assemble the new thermocouple and tighten, but not more than 0,4 kp.m.
6.3. REPLACEMENT OF PILOT BURNER
Proceed as follows:
a) Unscrew the hexagonal screw and loosen the control to remove the stainless steel front panel.
b) Remove the clamp that attaches the pilot burner to the gas conducting tube.
c) Loosen the fitting of the pilot burner tube.
d) Replace the pilot burner. Torque should not exceed 0,8 kp.m.
e) Make sure that the circuit is gastight before starting the device again.
6.4. REPLACEMENT OF THERMOELECTRIC SECURITY VALVE
VERY IMPORTANT: DO NOT MANIPULATE OR GREASE THE GAS TAP. IN CASE OF BREAKDOWN OR JAMMING OF
THE AXIS, THE ENTIRE VALVE MUST BE REPLACED BY AN AUTHORIZED TECHNICIAN.
Proceed as follows:
a) Unscrew the two hexagonal screws and loosen the controls to remove the stainless steel front panel.
b) Loosen the nut that fixes the thermocouple to the valve.
c) Loosen the nut that fixes the pilot burner to the valve.
d) Unscrew the four flat headed screws that fix the elbow injector union.
e) Unscrew the screws that fix the valve to the clamp of the main gas connection and loosen.
f) Assemble the new valve and replace the Klingerit joint. Tighten the main connection’s flange. Torque should not
exceed 2,5 kp.m.
g) Assemble the thermocouple and the pilot burner on the valve.
h) Make sure the device is completely gastight before starting it again.
7.GAS CONVERSION.
Gas conversion to another type of gas must always be done by a qualified installer, by the manufacturer’s staff or by the gas
supplying company.
Always use manufacturer’s original spare parts for gas conversions and repairs. Follow the instructions given hereunder.

8
7.1. REPLACEMENT OF BURNER INJECTOR.
The device is normally regulated and prepared to operate with G30+G31 gas at pressure of 28-30/37 mbar. A conversion kit
for G20 + G25 or G20 gas is included in this device.
a) Unscrew the two hexagonal screws and loosen the controls to remove the stainless steel front panel.
b) Displace the primary air regulating tube towards the ring of the burner.
c) Unscrew the injector counterclockwise, according to fig. 2
d) Replace the injector according to chart 3.
e) The injector diameter is indicated in hundreths of mm on the injector.
Figure 2
Figure 2
f) IMPORTANT: IMMEDIATELY ATTACH THE PLATE WITH INFORMATION ON THE NEW GAS TYPE.
Replacement injectors are supplied together with the corresponding informative plates.
7.2. ADJUSTMENT OF PILOT BURNER TO NEW GAS TYPE.
a) Loosen the lower nut of the pilot burner (with a fitting spanner of 11mm).
b) Turn the internal screw with a flat tip screwdriver to the right (for a smaller flame) or to the left (for a bigger flame).
c) Screw on the lower nut of the pilot burner.
7.3. PRIMARY AIR REGULATION.
7.3.1. BURNER RING
Primary air is regulated by approaching or moving away the regulating tube. Proceed as follows:
a) Loosen screw (fig. 2).
b) Move the burner tube-like regulator with some gentle strokes until a stable flame is achieved according to the gas
type installed (fig. 2 and chart 5)
c) Fix the primary air regulator with the screw.
Chart 5: Opening Primary Air Regulation
BURNER Opening D for
G 20 GAS Opening D for
G 30 + G 31 GAS
(37 mbar) Opening D for
G 31 (50 mbar)
GAS Opening D for
G 30 (50 mbar)
GAS
BIG RING Maximally Open
(approx. 24 mm) Maximally Open (approx. 24 mm) 9 mm Maximally Open (approx. 24 mm)
Primary air of the pilot burner is regulated by turning the intermediate part in such a way that more or less air flows through the
injector’s orifice. Regulation is obtained by turning in one way or the other.
Observe the flame. An excess of primary air produces a short flame that tends to come off the pilot burner. This could hinder
the ignition of the pilot injector.
The lack of primary air produces smooth and weak flames with yellow extremities due to an incomplete combustion.
PRIMARY AIR
REGULATION
PIECE
(
TUBE
)
INJECTOR

9
7.4. BURNER REGULATION
Light the burner and keep it burning during a few minutes maximum. Then all at once change from maximum to minimum and
to maximum again several times. When doing these tests, if the burner extinguishes at the minimum position or the flames are
too big, then proceed to regulate the minimum by turning the thermoelectric security valve to the left to obtain a bigger flame or
to the right to obtain a smaller flame.
8. PROBLEMS AND SOLUTIONS.
During normal operation of the device, problems can arise. These problems, as well as the possible causes and solutions are
listed below.
- The pilot burner and the main burner do not ignite.
Verify the following:
a) Make sure the stopcock is open.
b) Check if there is gas in the network.
c) Dismantle the pressure regulator that supplies gas to the device (in case it exists) and clean the input filter. There
could be an obstruction due to gas impurities.
- The pilot burner extinguishes easily.
Check if the injector is obstructed.
Clean the injectors with high air pressure only. Never use wires or sharp objects that could vary the diameter of the injectors.
If the pilot burner does not retain the flame once these tests are completed, this means that the thermocouple is too separated
from the flame or the connection to the valve is loose. In this case, tighten, but not excessively to avoid damaging the
thermocouple head.
- The flame is yellow.
Possible causes are:
a) The burner is dirty. In this case, clean the burner.
b) Bad primary air regulation. Follow the instruction given under point 7.3. for regulation of primary air input.
c) Obstruction in the burner injector. Clean the obstructed injector by blowing air.
For any other type of breakdown, contact our nearest After-sales Technical Service.
9. USE AND MAINTENANCE INSTRUCTIONS
9.1. START-UP.
9.1.1. SWITCHING ON THE BURNER
a) Open the stopcock located outside the device.
b) Put the selector in position pilot burner “*”. To do this, press and simultaneously turn the selector 90º to the left and
light the pilot burner maintaining the selector pushed about 20 sec.
NOTE: It is possible that the first ignation takes more time when the pilot burner gas pipe is filled with air.
c) To ignite the burner, turn the selector another 90º more to the left until the maximum position. If you continue turning
the selector until the minimum position power will be reduced progressively.
9.1.2. SWITCHING OFF THE BURNER.
Turn the selector from position “maximum” or “minimum” to position “*” (pilot burner). The burner will be switch off and the
flame of the pilot burner will keep on burning, facilitating thus a future ignition.
If you want to switch off the burner completely, turn the selector to position “O”. At the end of the day, it’s advisable to close the
gas valve of the device.

10
10. MAINTENANCE AND CLEANING
To assure a long duration of your burner, follow attentively the maintenance and cleaning instructions.
Clean the stainless steel surface daily with soapy temperate water. Rinse thoroughly with water and dry. Do not use abrasive
products, sandy detergents, scourers or steel brushes that could scratch the surface.
Clean the burner (ring) daily with a steel brush to eliminate spilled food.
Have you technical service make regular checks, minimum once a year and preferably when finishing the main season.
Do not clean the device with direct water jets and especially the interior parts as the functional elements could be damaged.
Do not use chlorine or corrosive substances to clean the device.
Clean the orifices of the burner and pilot burner.
If the device is not going to be used for a long period of time, protect the stainless steel surface by lubricating it with vaseline oil
To ensure optimum use and safety, check the device periodically, at least once a year.
All controls must be performed by qualified staff or a technician authorized by the manufacturer.
Instructions for maintenance are indicated in chapter 5 - Technical Maintenance.

DECLARACION CE DE CONFORMIDAD
NOMBRE DEL FABRICANTE O MANDATARIO Nuevas Técnicas del GAS, S.L.
DIRECCIÓN
C / Maldonado, 6
46700 GANDIA (Valencia) Spain
DECLARAMOS bajo nuestra única responsabilidad que el producto:
Quemador atmosférico de Gas con soporte integrado (Hornillo de cocción/paellero)
para uso colectivo
Marca
Modelo
Nº Serie
Año de construcción
se adapta a la(s) norma(s) o documentos(s) normativo(s):
EN 437, UNE-EN 203-1 y UNE-EN 203-2.
y es conforme a los requisitos esenciales de la(s) Directiva(s):
90/396/CEE
Dispone de la Certificación CE de tipo
emitida por el Organismo:
LGAI
El seguimiento será realizado por el Organismo:
LGAI
Según lo establecido en el módulo C D E F de la Directiva 90/396/CEE
Nombre y cargo de la persona autorizada:
David Pardo Peiró (Director Gerente)
Lugar y fecha Firma
Gandía a de de 20
Nuevas Técnicas del GAS S.L.
C.I.F. B-96848114
C / Maldonado nº 6
46700 Gandía (Valencia) SPAIN
Tel .- + (34) 962 950 987
Fax.- + (34) 962 954 793
E-Mail: [email protected]om
Internet: www.ntgas.com
NTGas
H
Q
04
20
Nº PIN 0370 AP0018

Nuevas Técnicas
del Gas S.L.
Paelleros profesionales
www.ntgas.com
Cocina China
Hornillos alta potencia
Hornillos de Pavimento
O
Churreras a Gas/Electricas
Hornos Tandoori
Cocedero Marisco
CONSULTE A SU DISTRIBUIDOR
OTROS PRODUCTOS NTGAS