Frequently Asked Questions

CV & CV+ Multi-burner gas-fired overhead radiant tube heater systems

EUA Single burner positive pressure Two-Stage Tube heater

EUAV Single burner negative pressure Two-Stage Tube heater

EUAV Herringbone Manifold System Two-Stage End Burner System

ETE Two-Stage Outdoor heater

SDE Luminous Plaque heater

The SRP EU products are designed and manufactured according to these standards:

CV & CV+

EN 416: 2020 “Single burner gas-fired overhead radiant tube heaters for non-domestic use”.

EN 17175: 2020 “Gas-fired overhead radiant strip heaters and multi-burner continuous radiant tube heater systems for non-domestic use – Safety and energy efficiency”

EUA & EUAV

EN 416: 2020 “Single burner gas-fired overhead radiant tube heaters for non-domestic use”.

EUAV Herringbone Manifold System

EN 416: 2020 “Single burner gas-fired overhead radiant tube heaters for non-domestic use”.

ETE

EN 416: 2020 “Single burner gas-fired overhead radiant tube heaters for non-domestic use”.

EN 14543: 2017 “Specification for dedicated liquefied petroleum gas appliances. Parasol patio heaters. Flueless radiant heaters for outdoor or amply ventilated area use”.

SDE

EN 419: 2020 “Gas-fired overhead luminous radiant heaters for non-domestic use – Safety and energy efficiency”.

Yes.  SRP products comply with EU Gas Appliance Regulation (EU/2016/426) and eco-design (ErP) Directive 2009/125.

Seasonal Space Heating Energy Efficiency:

EUAV over 80%

EUA over 80%

CV 90%

CV+ 92%

EUA Series         10kW to 60kW

EUAV series       20kW to 60kW

CV Series           12kW to 35kW (per burner)

CV+ Series         18kW to 73kW (per burner)

ETE Series          15kW and 30kW

SDE Seies          10kW to 45kW

The stated clearance to combustibles represents a surface temperature of 50°C above room temperature. It is the installer’s responsibility to ensure that adjacent materials are protected from deterioration.

Yes.  SRP® produvome with two types of heat exchangers – linear and U tube configurations. Refer to installation instructions for detailed information.

• EUAV series are used in Herringbone Manifold Systems.
• CV and CV+ are multi-burner continuous radiant tube heater systems engineered to adapt to specific requirements of the building. Refer to installation instructions for detailed information on designing these systems.
• ETE series come in two fixed sizes. Refer to installation instructions for detailed information.
• SDE series come in four sizes. Refer to installation instructions for detailed information.

Turbulators are used in the radiant tube heaters to enhance the heat transfer from the product of combustion into the radiant tube. Not all products use turbulators. Please refer to installation instructions for each product line for more detailed information.

SRP® product lines are certified to different country of destinations and different gas types. Please refer to installation instructions for each product line for more detailed information.

EUA Series are operated according to the following appliance type:

• Type A3. Gas appliance without flue gas system. The combustion air is taken from the installation space.
• Type B23. Gas appliance with flue gas system, taking the combustion air from the installation space.
• Type C63. Gas appliance with flue gas system and outside (ducted) combustion air supply. Use a separate approved and marketed system for supply of combustion air and discharge of the combustion products.

EUAV Series are operated according to the following appliance type:

• Type A2. Gas appliance without flue gas system. The combustion air is taken from the installation space.
• Type B22. Gas appliance with flue gas system, taking the combustion air from the installation space.
• Type C62. Gas appliance with flue gas system and outside (ducted) combustion air supply. Use a separate approved and marketed system for supply of combustion air and discharge of the combustion products.

CV, CV+ series are operated according to B52 appliance type.

ETE Series are outdoor patio heaters.

SDE Series are operated according to the appliance Type A, Gas appliance without flue gas system.

For single burner gas-fired overhead radiant tube heaters, EUA and EUAV Series:

• Maximum total exhaust vent length allowed for ø 100 mm:
  • 5 m for 10kW,20kW and 10 m for 30kW,40kW,50kW,60kW
• Maximum total fresh air inlet duct length allowed for ø 100 mm:
  • 5 m for 10kW,20kW and 8 m for 30kW,40kW,50kW,60kW

The flue pipe must be arranged to provide a continuous rise from the heater of 6mm per 1m length.

• EUA 10, 20, 30, 40: 12.7 mm (½”) Flexible gas connectors.
• EUA 50, 60: 19.1 mm (¾”) Flexible gas connectors.

Please refer to installation instructions of each product line for more detailed information.

EUA and EUAV Series

• Turn the thermostat on. When the thermostat calls for heat, the fan motor will energize.
• After the fan establishes the flow, the air-proving switch closes and activates the ignition sequence.
• The ignition module, after a pre-purge period of approximately 45 seconds, energizes the igniter.
• The gas valve opens after sparking starts.
  • If a flame is detected within 7 sec, the ignition sensing rod “reads” a rectification signal, and the gas valve remains open. The sparking stops when the flame signal is established.
  • If no flame is detected, the gas valve closes and a 30 second inter-purge period begins.
  • After the inter-purge, the module repeats the trial for ignition period.
  • If no flame is detected after three trials, the module will lock out.
  • Reset is accomplished by removing power from the module for at least 5 seconds.
• During normal operation the red pilot lamp is ON.
• The yellow lamp indicates that the heater is running at full load. At a partial load, the yellow lamp is OFF.
• To shut down the heater, switch off the electricity supply to the appliance. To shut down the heater for long periods of time, switch off the electricity supply and close the gas valve.

EUA and EUAV are two-stage heaters. These heaters can run as single stage or two stage operation.

Heaters come from the factory wired with a jumper between terminals 2 & 3. Using the jumper / link allows the heater to operate as a single stage heater. To operate as a two-stage, use a two-stage thermostat. Remove the jumper / link between terminals 2 & 3. Refer to internal wiring diagram in the manual.

SRP offers a two-stage control system and switches. Please refer to our product link as below:

• • https://www.superiorradiant.com/eu/product/mc200-digital-controller/
  • https://www.superiorradiant.com/eu/product/ee-two-stage-switches/

The heater is equipped with an air pressure switch (normally open) located in the burner box. This device monitors the air pressure produced by the fan. If the exhaust vent or the intake pipe becomes blocked or sufficiently restricted, the air pressure switch will shut down the heater.

The CV+ System: Burner Rate is determined by the Vacuum Setting of the Branch.  Rates can be adjusted by changing the Vacuum Settings at the Branch End Vent. Burner Models are specially engineered and built for the individual ‘Positions’ they are installed in along each Branch.

The Burner Unit can provide Rates from 23 to 73 kW.

The CV System:  ONE Vacuum Setting is required for all Branches in the System and is independent of which Burner Model is installed. Individual Air Plates have been specially engineered to co-ordinate with the ‘Position’ a Burner is placed in on any Branch of the System.  The Burner Unit can provide Rates from 12 to 35 kW.

EUA and EUAV Series

The burner has two display lamps, a yellow one and a red one.

• The red lamp indicates that the burner is operating.
• The yellow lamp indicates that the heater is running at full load. At partial load the yellow lamp is OFF.

ETE Series

The burner has three display amber lamps:

• Full Load Indicator Light
• Power Indicator Light
• Lockout Indicator Light

EUA and EUAV Series

• 1 x FLASH – Airflow fault
• 2 x FLASHES – Flame – No call for heat
• 3 x FLASHES – Ignition Lockout
• 4 x FLASHES – Control Fault

ETE Series

Lockout Indicator Light – Possible Reasons for Lock-out / Safety Shutdown

• False flame signal present (safety shutdown).
• Flame loss during burning.
• Air pressure switch stuck in open position.
• Air pressure switch fails to close after fan starts up.

SDE series

• 2 x Flash: Flame no call for heat.
• 3 x Flash: Ignition failure.
• 4 x Flash: Control fault.

Yes. Please refer to the manual for the gas conversion instructions.