COMMERCIAL GAS FITTING
Commercial Gas Fitting
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Our commercial gas services include:
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Gas Appliances
TYPE 3 GAS APPLIANCES – This refers to gas appliances generally above 250 MJ/hr input rating and would mainly apply to commercial and industrial appliances. This is for electronically and/or mechanically controlled gas appliances and equipment, and to one-off designs. Typical examples of type 3 appliances are commercial bakery ovens, large boilers and some appliances which are also used domestically, instantaneous water heaters, spa pool heaters, gun type burners and so on. Many gas appliances have a combination of type 1, 2 and 3 controls. For example a cooker may have 230 v ignition and a flame rectification safety device fitted to the cook top while having a thermo-electric safety device fitted to the oven. There are many overlaps in the lighting, the flame failure controls and the method of flame control in all three categories. The basic knowledge of control transects all appliances and a thorough knowledge of the gas ignition, controls and safety devices is required before any work on gas appliances is performed. Euro Plumbing strongly recommend that only a qualified and experienced gas fitter preform such work.
Some common gas appliances are, Salamanders, commercial stoves, commercial wok burners, gas fryers and dishwashers.
14 Step Gas Fitting Process
A comprehensive commercial appliance service begins with a thorough cleaning and detailed visual inspection. Technicians carefully remove dust from fans and all accessible surfaces, as accumulation can impede performance. The process includes a meticulous visual check of all components, identifying any loose wiring, insecure fittings, or corroded parts. Special attention is given to the flue to ensure it is clear of blockages, such as birds’ nests, and that there is no spillage that could adversely affect operation. Burners are also closely inspected, as they are prone to corrosion from condensation, which can block ports and interfere with the critical flame signal required for safe ignition.
Following the initial inspection, the focus shifts to the critical ignition and safety systems. The flame probe, a common point of failure, is carefully cleaned to remove build-up and ensure a reliable connection. Technicians verify that the flame establishes quickly and that the pilot cleanly lights the main burner without delay. All safety mechanisms are rigorously tested, including the overheat switch, thermostats, and pressure switches, to confirm they operate according to manufacturer specifications. The burner is cycled on and off multiple times to ensure pre-purge and post-purge functions operate correctly, guaranteeing a safe and efficient start-up and shutdown. Upon completion, a full checklist is provided with the service results and a recommendation for the next service date.
9KG bottle installation / re-location (LPG)
Still have your LPG bottle sitting inside a cupboard supplying gas to you LPG gas hob? Are you aware that laws in New Zealand have changed deeming such installations as “unsafe” and non-compliant? Whether you are selling your home and are now required to bring the installation up to standard, or wanting maintain a safe environment, this special installation deal offers the solution for most scenarios. Included is:
5 meter gas pipe run to exterior wall
Gas bottle regulator and hose
All labor and involved materials
Gas certificate (PS3)
This special excludes the supply of a LPG bottle, please advise in your booking details if needed.
Gas Hob (gas cook top) installation / re-location (Natural Gas and LPG)
Whether you are replacing your existing electrical hob or installing new, this deal includes everything that you need. Available for both LPG and Natural gas. Included is:
Up to 5 meters of gas pipe from Hob to energy source (gas meter supply pipe or LPG bottle) (Back to back)
All required valves
Gas Flexible connection
All relevant labour and involved materials
Gas certificate (PS3)
NOTE: An additional fee of $ 130 including GST will apply for free standing ovens (stoves). This is to allow to secure oven to the wall and supply a long flexible connection to allow for maintenance and cleaning as per NZBC. Ovens wider than 900mm will require a second person for lifting. Euro Plumbing generally accept client help in this instance to prevent further cost. This special excludes the supply of a LPG bottle, please advise in your booking details if needed. To ensure the installation complies
Gas Hob (gas cook top) installation .. cont.
Requirement 1 Overhead clearances—(Measurement A) Range hoods and exhaust fans shall be installed in accordance with the manufacturer’s relevant instructions. However, in no case shall the clearance between the highest part of the hob of the gas cooking appliance and a range hood be less than 600 mm or, for an overhead exhaust fan, 750 mm. Any other downward facing combustible surface less than 600 mm above the highest part of the hob shall be protected for the full width and depth of the cooking surface area in accordance with Clause 6.10.1.2. However, in no case shall this clearance to any surface be less than 450 mm. (b) Requirement 2 Side clearances—(Measurements B and C) Where B, measured from the periphery of the nearest burner to any vertical combustible surface is less than 200 mm, that surface shall be protected in accordance with Clause 6.10.1.2 to a height C of not less than 150 mm above the hob for the full dimension (width or depth) of the cooking surface area. Where the gas cooking appliance is fitted with a ‘splashback’, protection of the rear wall is not required. (c) Requirement 3 Additional requirements for freestanding and elevated gas cooking Appliances—(Measurements D and E) Where D, the distance from the periphery of the nearest burner to a horizontal combustible surface is less than 200 mm, then E shall be 10 mm or more, or the horizontal surface shall be above the trivet. NOTES: 1 Requirement 3 does not apply to a freestanding or elevated gas cooking appliance which is designed to prevent flames or the cooking vessels from extending beyond the periphery of the gas appliance. 2 The ‘cooking surface area’ is defined as that part of the gas appliance where cooking normally takes place and does not include those parts of the gas appliance containing control knobs. 3 Consideration is to be given to window treatments when located near cooking appliances.
GAS APPLIANCE SERVICING
Our Appliance Service includes the following:
Visually inspect ALL the gas pipe work
Visually inspect gas appliance, flues and ventilation
Working pressure at meter and standing pressure
strip clean or check; Burners, Injectors, Pilot assembly, Lint arresters, Flue ways, Heat exchanger, Fan, Gas taps/valves thermostats, ignition device
Follow commission procedure; controls, solenoids, fan pressure switch, regulator, thermistor, thermostat, by-passes
General components; lights, timers, flicker devices, air / room thermostats and controls
Combustion performance analysis; CO / CO2 ratio (data-plate VS actual)
Gas Rating the appliance as per manufacturing specification
Final ventilation, spillage and tightness test