COMPACT 50L ELECTRIC STORAGE
Vulcan 50L Electric Storage Hot Water System
The Vulcan 50L Electric Water Heater is a compact mains-pressure storage system designed for apartments, kitchens, studios, offices and other applications with relatively low hot-water demand.
The current model is 691050G7 and combines 50 litres of hot-water delivery with a 3.6kW single electric element. Its compact cabinet, dual-handed plumbing connections and continuous electricity-supply requirement make it particularly relevant to like-for-like replacement of smaller electric storage units.
Vulcan currently gives the 50L a maximum guide of one person under its stated sizing assumptions. It should not be treated as a general family-size water heater simply because it can supply whole-home plumbing.
Installed Today can offer the Vulcan 50L as supply only or through eligible supplied-and-installed pathways in Brisbane and Gold Coast service areas, subject to product availability, plumbing, electrical supply, water pressure, drainage, access and installation requirements.
Vulcan 50L at a glance: model 691050G7, 50L hot-water delivery, 3.6kW single element, continuous electricity supply, dual-handed water and TPR connections, indoor or outdoor installation, 24kg empty weight, compact 695mm-high cabinet and a detailed manufacturer cylinder warranty extending to 7 years for qualifying single-family domestic installations.
CURRENT MODEL
What Is the Current Vulcan 50L Model?
The current standard model is 691050G7.
It forms part of Vulcan's 691 Series compact mains-pressure electric storage range and uses one 3.6kW heating element.
50L Delivery
The cylinder provides 50 litres of manufacturer-listed hot-water delivery.
3.6kW Element
The current model uses a single 3.6kW electric immersion heating element.
WHO IS IT FOR?
How Many People Does the Vulcan 50L Suit?
Vulcan currently lists the 50L for a maximum of one person under the manufacturer's stated sizing assumptions.
Vulcan bases that guide on seven-minute showers at a 42°C mixed-water temperature in a moderate climate with the specified electricity-supply arrangement.
The 50L can also suit applications where the demand is limited to selected outlets rather than a full family household.
Single-Person Use
Can suit a small dwelling where hot-water use remains modest and the system can reheat throughout the day.
Kitchens & Offices
Can provide stored hot water for lower-demand amenities where a larger household cylinder is unnecessary.
Compact Replacement
Particularly relevant where an existing small electric storage water heater is already installed in a suitable location.
The one-person figure is a manufacturer sizing guide rather than a guarantee. Shower flow, duration and simultaneous use materially affect available hot water.
KEY NUMBERS
Vulcan 50L at a Glance
50L
Hot-Water Delivery
3.6kW
Single Element
24kg
Empty Weight
695mm
Overall Height
TECHNICAL SPECIFICATIONS
Vulcan 50L Electric Water Heater Specifications
| Specification |
Vulcan 691050G7 |
| Brand |
Vulcan |
| Series |
691050 |
| Model |
691050G7 |
| System Type |
Mains-pressure electric storage water heater |
| Hot-Water Delivery |
50L |
| Element Arrangement |
Single element |
| Element Rating |
3.6kW |
| Electrical Supply |
220–240V AC, 50Hz |
| Tariff |
Continuous electricity supply |
| Installation |
Indoor or outdoor |
| Connection Orientation |
Dual handed |
| Hot & Cold Water Connections |
Rp 3/4 |
| Relief-Valve Connection |
Rp 1/2 |
| TPR Valve Setting |
1000kPa |
| ECV Setting |
850kPa where fitted |
| Maximum Mains Pressure With ECV |
680kPa |
| Maximum Mains Pressure Without ECV |
800kPa |
| Height |
695mm |
| Main Body Width |
400mm |
| Maximum Depth |
436mm |
| Empty Weight |
24kg |
| Shipped Weight |
Approximately 26kg |
| Manufacturer People Guide |
Maximum 1 person under stated conditions |
DUAL-HANDED CONNECTIONS
What Does Dual Handed Mean?
The Vulcan 50L has hot-water, cold-water and TPR-valve connection positions on both sides of the cabinet.
This gives an installer more flexibility than a single-sided cylinder when matching existing plumbing in cupboards, apartments, kitchens and other compact installation areas.
The water connections can be made from the side that best suits the approved installation arrangement.
Dual handed does not mean every old pipe layout will connect without alteration. Existing pipe condition, valve position and service access still need to be checked.
CONTINUOUS ELECTRICITY
Does the Vulcan 50L Need Continuous Power?
Yes. Vulcan lists the 50L for connection to a continuous electricity supply.
The small cylinder relies on regular access to electrical power so the thermostat can reheat stored water after use.
This is particularly important where the unit is expected to provide showering hot water rather than only occasional handwashing or kitchen demand.
The 50L is not listed by Vulcan as a normal restricted off-peak storage model. Check the existing tariff arrangement before replacing an older water heater.
ELECTRICAL REQUIREMENTS
How Is the Vulcan 50L Connected to Power?
Vulcan specifies permanent connection to a 220–240V AC, 50Hz mains supply.
The circuit, cable, isolation and protective-device arrangement must suit the 3.6kW appliance and the existing electrical installation.
A licensed electrical worker should assess any fixed-wiring work, circuit modification, isolator change or increase in electrical load required for the replacement.
The water heater must be completely full before it is energised. Vulcan specifically requires the cylinder to be filled and the electrical installation checked before switching on the power.
STORED WATER TEMPERATURE
How Hot Does the Vulcan 50L Store Water?
The current Vulcan installation guide lists the 50L thermostat as adjustable from approximately 60°C to 75°C.
The manufacturer lists the factory thermostat setting at approximately 75°C for the 50L model.
This higher storage temperature helps increase the useful quantity of mixed hot water available from a compact cylinder, but it also means the stored water is capable of causing serious scalding.
The completed installation therefore needs the appropriate temperature-control arrangement where delivery temperature is required to be limited at personal-hygiene fixtures.
INDOOR OR OUTDOOR
Can the Vulcan 50L Be Installed Inside or Outside?
Yes. Vulcan specifies the 691 Series 50L as suitable for indoor or outdoor installation.
The system needs a suitable location with stable support, service access, compliant plumbing and a suitable electrical connection.
For indoor installations, particular attention needs to be given to leakage protection and drainage.
WALL MOUNTING
Can the Vulcan 50L Be Mounted on a Wall?
Vulcan's current installation guide allows the 50L to be wall mounted where the wall is capable of supporting the complete filled operating weight.
The manufacturer identifies a dedicated wall-bracket kit for this installation pathway.
Wall mounting is not automatically suitable for every wall construction. The supporting structure, fixings, plumbing, drainage and service access need to be appropriate for the completed installation.
SAFE TRAY
When Does the Vulcan 50L Need a Safe Tray?
Where a future leak could cause property damage, Vulcan requires a suitable safe tray beneath the water heater.
This is particularly relevant to cupboard installations, apartments, kitchens and other internal locations.
The tray requires its own compliant drain arrangement.
Relief-valve drain lines do not simply terminate into the safe tray. The TPR or ECV discharge arrangement and safe-tray drainage have separate requirements.
COMPACT DIMENSIONS
How Small Is the Vulcan 50L?
The current installation drawing lists the water heater at approximately 695mm high x 400mm wide x 436mm maximum depth.
The unit weighs approximately 24kg empty.
This makes it substantially smaller and lighter than conventional family-size electric storage cylinders, but the installation still needs enough room for plumbing, drainage and service access.
- Check cupboard height and depth
- Check doorway or access opening width
- Allow room for pipework and valves
- Maintain access to the electrical service cover
- Allow access to the TPR valve
- Provide safe drainage where required
- Allow for future removal and replacement
WATER PRESSURE
What Water Pressure Limits Apply?
The Vulcan 50L uses a 1000kPa temperature and pressure relief valve.
Where an expansion control valve is fitted, Vulcan specifies an 850kPa ECV.
| Cold-Water Arrangement |
Maximum Mains Supply Pressure |
| With Expansion Control Valve |
680kPa |
| Without Expansion Control Valve |
800kPa |
If incoming mains pressure is above the applicable limit, a suitable pressure-limiting valve is required.
EXPANSION CONTROL
Does Every Vulcan 50L Need an ECV?
No. Vulcan lists the 850kPa ECV specification for installations where an expansion control valve is required rather than stating that one is universal to every property.
Where fitted, the ECV provides a lower-pressure cold-side discharge point as stored water expands during heating.
The licensed plumber confirms the correct valve arrangement for the actual installation.
RELIEF DRAINAGE
Does the Vulcan 50L Need Drainage?
Yes. The TPR valve and any fitted expansion control valve require suitable drain lines.
Relief discharge must remain open to atmosphere and terminate in an appropriate location where hot water will not create injury, damage or nuisance.
If the existing drainage arrangement cannot be reused, additional plumbing work can be required.
PUSH-THROUGH OPTION
Can the 50L Be Used as a Push-Through Water Heater?
Vulcan's current installation guide identifies a specific push-through or free-outlet installation option for the 50L in appropriate applications.
That arrangement is intended to supply a single non-tempered, non-ablution outlet and has different plumbing requirements from a normal mains-pressure whole-home installation.
This is a specialist installation pathway and should not be confused with the standard mains-pressure configuration used for normal household hot-water distribution.
VITREOUS ENAMEL CYLINDER
How Is the Vulcan 50L Cylinder Protected?
The water heater uses a vitreous-enamel-lined steel cylinder together with sacrificial anode protection.
The enamel lining protects the steel vessel from direct water contact while the anode provides additional corrosion protection.
Water chemistry, pressure control, correct anode selection and regular maintenance can all affect cylinder service life.
MAINTENANCE
What Maintenance Does Vulcan Recommend?
Vulcan recommends minor maintenance approximately every six months and a professional major service in the fifth year after installation.
Every Six Months
Gently operate the TPR-valve easing lever, operate the ECV lever where one is fitted and check safe-tray drainage where applicable.
Fifth-Year Major Service
The manufacturer service schedule includes checks of the valves, anode, electric heating unit, drainage, plumbing connections and general condition of the water heater.
The fifth-year service can affect warranty claims. Vulcan states that a claim may be rejected where the recommended major service was not arranged and the relevant fault would have been detected and corrected during that service.
WARRANTY
Vulcan 50L Warranty
The current detailed Vulcan warranty for the 691 Series 50L provides:
| Period |
Component |
Coverage |
| Year 1 |
All components |
Repair or replacement of the faulty component, including labour, subject to warranty terms |
| Years 2–7 |
Cylinder in a single-family domestic dwelling |
Replacement cylinder supplied; installation and repair labour is the owner's responsibility |
| Years 2–3 |
Cylinder where not installed in a single-family domestic dwelling |
Replacement cylinder supplied; installation and repair labour is the owner's responsibility |
The detailed current warranty therefore provides a seven-year total cylinder warranty period for the 691 Series 50L in a qualifying single-family domestic dwelling.
Manufacturer-document note: Vulcan's current product-page headline displays a 10-year cylinder claim, but the same page's specification table lists seven years and the detailed current warranty document specifically assigns years 2–7 to the 691 Series 50L. The detailed warranty terms should be relied upon for warranty coverage.
50L VS LARGER STORAGE
When Is the Vulcan 50L the Right Size?
The 50L is intended for genuinely low hot-water demand.
It can be useful where space is limited and a larger storage cylinder would provide unnecessary capacity, but it should not be selected purely because it is physically compact.
A larger storage water heater may be more suitable where:
- More than one person regularly needs showering hot water
- Several showers occur close together
- Bath use is required
- There are multiple bathrooms
- Kitchen and shower demand overlap
- The property regularly exhausts a smaller cylinder
50L VS INSTANT ELECTRIC
How Does a 50L Storage Heater Compare With Instant Electric?
The Vulcan stores heated water inside a 50L cylinder and reheats it with a 3.6kW element.
An instantaneous electric water heater instead heats water while it flows through the appliance and can require a substantially higher electrical load depending on the application.
The Vulcan can make sense where a compact stored-water solution fits the property and a conventional 3.6kW storage circuit is appropriate.
The better option depends on available electrical capacity, required flow, available space and the intended hot-water outlets.
SUPPLY ONLY
Buy the Vulcan 50L Supply Only
Choose supply only where appropriately licensed plumbing and electrical trades are already arranged.
The unit-only price does not automatically include:
- Plumbing installation
- Electrical disconnect or reconnect
- Electrical circuit alterations
- Valve kit
- Temperature-control equipment
- Pressure-control components
- Additional pipework
- Relief-drain alterations
- Safe tray where required
- Wall-mounting bracket or structural work
- Old-system disposal
- Difficult-access work
SUPPLY & INSTALL
Vulcan 50L Supplied & Installed
Eligible Brisbane and Gold Coast customers can select a supplied-and-installed pathway where the property and existing services suit the Vulcan 691050G7.
Plumbing Check
Water pressure, valve arrangement, pipework, temperature control and relief drainage need to suit the selected installation.
Electrical Check
The existing electrical supply and circuit need to suit the 3.6kW element and continuous-supply requirement.
Location Check
Cupboard space, floor or wall support, drainage and future service access need to be suitable for the compact cylinder.
INSTALLATION AREAS
Vulcan 50L Installation in Brisbane & Gold Coast
Installed Today can provide supplied-and-installed pathways across eligible Brisbane and Gold Coast service areas where the selected product and required installation scope are available.
Brisbane
Gold Coast
Additional work can apply where the property requires new valves, electrical alterations, extra plumbing, pressure control, a safe tray, drainage changes, relocation, wall-support work or old-system disposal.
SMALL SYSTEM FOR LOW HOT-WATER DEMAND
Why Choose the Vulcan 50L?
The Vulcan 50L provides a compact mains-pressure storage option where hot-water demand is limited and installation space matters.
Its current manufacturer specifications include 50L delivery, a 3.6kW single element, continuous electricity supply, dual-handed connections, indoor or outdoor installation and a compact 695mm-high cabinet.
It is particularly relevant as a replacement for an existing small electric storage system in an apartment, kitchen, studio, office or similar low-demand installation.
COMMON QUESTIONS
Questions About the Vulcan 50L Electric Water Heater
Is the Vulcan 50L Still a Current Product?
Yes. Vulcan currently lists the 50L within its active electric vitreous-enamel water-heater range.
What Is the Current Model Code?
The current model is 691050G7.
How Much Hot Water Does It Deliver?
Vulcan lists 50 litres of hot-water delivery.
How Many People Does Vulcan List It For?
The current manufacturer guide lists a maximum of one person under its stated sizing assumptions.
What Size Is the Element?
The current model uses a 3.6kW single element.
Does It Need Continuous Electricity?
Yes. Vulcan lists the 50L for continuous electricity supply.
Can It Be Installed Indoors?
Yes, where the installation satisfies the manufacturer's plumbing, electrical, support, access and drainage requirements.
Can It Be Installed Outdoors?
Yes. The current installation guide identifies the 691050 as suitable for either indoor or outdoor installation.
Can It Be Wall Mounted?
Yes, where the wall can support the complete filled water heater and the manufacturer's wall-bracket arrangement and installation requirements are followed.
What Are the Dimensions?
Approximately 695mm high x 400mm wide x 436mm maximum depth.
How Much Does It Weigh?
Approximately 24kg empty. Vulcan's current product page lists approximately 26kg shipped.
What Does Dual Handed Mean?
The 50L provides hot-water, cold-water and TPR connection positions on both sides of the cabinet, allowing the installer to use the appropriate side for the installation.
What Size Are the Water Connections?
The hot and cold water connections are Rp 3/4.
What Size Is the TPR Connection?
The current installation guide lists Rp 1/2.
What Is the TPR Valve Setting?
1000kPa.
What Is the ECV Setting?
Where an expansion control valve is fitted, Vulcan lists 850kPa.
What Is the Maximum Mains Pressure With an ECV?
680kPa.
What Is the Maximum Mains Pressure Without an ECV?
800kPa.
Does Every Installation Need an ECV?
No. The requirement depends on the actual plumbing arrangement and applicable installation conditions.
How Hot Can It Store Water?
The thermostat is adjustable from approximately 60°C to 75°C, with Vulcan listing a factory setting of approximately 75°C for the 50L.
Does It Need Temperature Control?
Where the appliance supplies personal-hygiene fixtures, the completed installation needs the appropriate temperature-control arrangement required for that plumbing configuration.
Can the 50L Be Used as a Push-Through Heater?
Vulcan identifies a specific push-through installation arrangement for selected single-outlet applications. This is different from a normal mains-pressure whole-home installation and must follow the manufacturer's instructions.
Does It Need a Safe Tray Indoors?
Where leakage could cause property damage, Vulcan requires a suitable safe tray and drainage arrangement.
Does It Need Servicing?
Yes. Vulcan recommends regular minor maintenance and a professional major service in the fifth year after installation.
What Is the Detailed Cylinder Warranty?
For a qualifying single-family domestic dwelling, year 1 covers all components including labour and the cylinder then receives replacement-parts coverage through years 2–7. Installation and repair labour during years 2–7 is the owner's responsibility.
Why Does the Vulcan Webpage Also Say 10 Years?
The current product page contains conflicting warranty information. Its headline states 10 years, while its specification table states seven years and the detailed current warranty document specifically gives the 691 Series 50L cylinder coverage through year 7. The detailed warranty terms should be used when assessing coverage.
Can I Buy the Vulcan 50L Supply Only?
Yes. Supply-only ordering suits customers who already have appropriately licensed plumbing and electrical trades arranged.
Can Installed Today Install It?
Eligible Brisbane and Gold Coast properties can select a supplied-and-installed pathway where the plumbing, continuous electricity supply, drainage, access and installation position are suitable.
FINAL CHECK
Is the Vulcan 50L Right for Your Installation?
The Vulcan 691050G7 is primarily suited to low-demand applications needing a compact mains-pressure electric storage water heater.
Its current manufacturer specifications include 50L hot-water delivery, a 3.6kW single element, continuous electricity supply, dual-handed plumbing connections, 24kg empty weight and indoor or outdoor installation.
Before ordering, check actual hot-water demand, existing electrical circuit, continuous-supply arrangement, water pressure, valve condition, temperature control, drainage, cupboard or wall space and future service access.
For supply only, arrange appropriately licensed installation trades. For eligible Brisbane and Gold Coast properties, select the matching supplied-and-installed pathway and any required valve, electrical, drainage, support, disposal or access add-ons before checkout.
