Horstmann Economy 7 Quartz User Guide: A Comprehensive Overview (01/22/2026)
This guide details the Horstmann Economy 7 Quartz, a reliable unit for off-peak heating. It provides hot water utilizing cheaper overnight electricity, with a manual boost timer.
Understanding Economy 7 Tariffs
Economy 7 tariffs offer cheaper electricity rates during off-peak hours, typically overnight. This system is designed for storage heaters and hot water tanks, like those controlled by the Horstmann Economy 7 Quartz. The lower rate incentivizes electricity usage when demand is lower, resulting in potential cost savings. However, a significant portion of your bill includes a daily standing charge, around 60p, regardless of usage.
Effectively utilizing Economy 7 requires understanding your hot water consumption patterns. If your primary usage isn’t showers, or if your tank has two immersions, running only the top immersion can be more economical. Carefully consider if the upfront cost of a digital upgrade will be offset by long-term savings, as it’s unlikely to pay for itself quickly.
How the Horstmann Economy 7 Quartz Works
The Horstmann Economy 7 Quartz controls your immersion heater, utilizing off-peak electricity rates. During the overnight Economy 7 period, it activates the immersion heater to warm the water in your tank. The duration it runs for within that hour depends on the thermostat setting within the immersion itself. If the water is cold, it may run the full hour, but it will switch off sooner if the desired temperature is reached;
A key feature is the one-hour boost timer, allowing for additional heating during the day. This is useful if the overnight heating isn’t sufficient, but remember it uses the standard, more expensive electricity tariff.
Key Features of the Horstmann Economy 7 Quartz
The Horstmann Economy 7 Quartz boasts proven reliability and accuracy in controlling your hot water. Its ease of installation and setup makes it a popular choice for Economy 7 systems. A primary feature is its ability to provide a full tank of hot water, leveraging the cheaper overnight electricity tariff. The integrated one-hour boost timer offers flexibility, allowing for supplemental heating during peak hours when needed.
It’s designed as a standard unit, often considered the benchmark for Economy 7 controls. However, users should be aware that upgrading to a digital model may not yield significant cost savings in the medium term.
Installation and Setup
Proper installation is crucial for optimal performance. Ensure correct wiring and electrical connections, referencing the provided diagram, before setting the time and date accurately.
Initial Installation Considerations
Before commencing installation of your Horstmann Economy 7 Quartz, several factors require careful consideration. Firstly, verify compatibility with your existing hot water system and Economy 7 tariff. Ensure a qualified electrician undertakes all electrical work, adhering to current safety regulations. Assess the location for ease of access for future maintenance and adjustments.
Confirm the immersion heater thermostat is functioning correctly, as the Quartz controls the heating duration, not the temperature itself. Consider your household’s hot water demands – a larger family will necessitate different settings than a single occupant. If your tank features dual immersion heaters, understand which one is connected to the Economy 7 circuit. Finally, familiarize yourself with the wiring diagram to prevent incorrect connections, potentially causing damage or malfunction.
Wiring Diagram and Electrical Connections
Crucially, all electrical connections must be performed by a qualified electrician. The Horstmann Economy 7 Quartz typically requires connection to a dedicated Economy 7 circuit. Identify the live, neutral, and earth wires – incorrect wiring can be dangerous. Refer to the detailed wiring diagram provided with the unit; it illustrates the specific connections for your model.
Ensure the power supply is isolated before commencing any work. Double-check all connections are secure and correctly tightened. Pay close attention to the immersion heater wiring, ensuring compatibility with the Quartz’s switching mechanism. Incorrectly wired immersion heaters can lead to inefficient heating or complete failure. Following the diagram precisely is paramount for safe and effective operation.
Setting the Time and Date
Accurate time and date settings are fundamental for the Horstmann Economy 7 Quartz to function correctly, aligning with your Economy 7 tariff periods. Typically, the unit features buttons or a dial for adjusting these parameters. Consult the user manual for the specific procedure for your model, as interfaces vary.
Begin by ensuring the display shows the correct year, then navigate to month and day settings. Subsequently, set the current time, paying attention to AM/PM designation. Verify the settings carefully before confirming, as incorrect settings will disrupt the heating schedule. Regular checks, especially after power outages, are recommended to maintain optimal performance and cost savings.
Daily Operation
The Horstmann Economy 7 Quartz primarily heats water overnight during off-peak hours, supplemented by a manual boost timer for daytime hot water needs.
Understanding the Standard Overnight Heating Cycle
The Horstmann Economy 7 Quartz operates primarily during the overnight Economy 7 tariff period, typically seven or eight hours. During this time, the unit activates the immersion heater within your hot water tank. However, it doesn’t simply run continuously for the entire duration. The thermostat within the immersion heater controls how long it actually runs.
If the water in the tank is cold, the immersion heater will likely operate for the full hour of each Economy 7 period. Conversely, if the water reaches the desired temperature sooner, the thermostat will switch off the heater, conserving energy. It will then cycle back on within that hour if the temperature drops below the set point. This ensures the water remains hot throughout the overnight period, ready for morning use.
Utilizing the Boost Timer Function
The Horstmann Economy 7 Quartz features a convenient one-hour boost timer designed for supplemental hot water heating during the day. This function is particularly useful when the standard overnight heating cycle hasn’t provided sufficient hot water, or for unexpected demand. Activating the boost timer overrides the standard Economy 7 schedule for a single hour.
During the boost period, the immersion heater operates similarly to the overnight cycle – governed by the tank’s thermostat. It will run for the full hour if the water is cold, or cycle on and off to maintain the set temperature. Remember, utilizing the boost function draws electricity at the standard, higher tariff rate.
Adjusting the Boost Timer Duration
While the Horstmann Economy 7 Quartz is equipped with a fixed one-hour boost timer, understanding its operation is key to efficient use. The timer cannot be directly adjusted for shorter durations; it always runs for the full 60 minutes once activated. However, the immersion heater’s thermostat controls how much water is actually heated during that hour.
If a full hour of boosting consistently overheats the water, consider lowering the immersion thermostat setting. Conversely, if the boost isn’t providing enough hot water, slightly increase the thermostat. This indirect adjustment allows you to tailor the boost’s effect to your specific needs and tank size.
Troubleshooting Common Issues
Common problems include insufficient hot water, even after boosting, or a non-functioning timer. These often relate to the immersion heater thermostat settings.
No Hot Water – Possible Causes
Several factors can contribute to a lack of hot water with your Horstmann Economy 7 Quartz system. First, verify the Economy 7 tariff is active and supplying off-peak electricity during the overnight heating cycle. A faulty immersion heater element is a common culprit; it may have burned out and require replacement.
Check the thermostat setting on the immersion heater itself – it might be set too low, preventing sufficient heating. Ensure the Horstmann Quartz timer is correctly programmed and functioning, activating the immersion heater during the overnight period. If boosting, confirm the boost timer is engaged and allowing power to the immersion. Finally, consider if the tank is adequately insulated, as heat loss can negate the heating efforts.
Insufficient Hot Water After Boosting
Experiencing limited hot water even after using the boost timer suggests a few potential issues. The immersion heater might be struggling to recover quickly enough, indicating a partially failed element or incorrect wattage for your tank size. Consider if you’re only heating the top immersion, which may be insufficient for your needs – a second immersion could be necessary.
Check for significant heat loss from the tank; inadequate insulation will quickly cool the water. Also, assess your hot water consumption patterns – a short boost may only provide enough for a quick shower. Finally, confirm the boost timer duration is set appropriately for your household’s demands.
Timer Not Functioning Correctly
If the Horstmann Economy 7 Quartz timer isn’t operating as expected, begin by verifying the time and date settings are accurate. Incorrect settings will disrupt the programmed heating cycles. Ensure the unit is receiving power and hasn’t tripped any circuit breakers. A faulty connection could prevent the timer from engaging.
Inspect the timer dial for any physical damage or obstructions. If the problem persists, consider the unit may require professional attention. Remember, in rented accommodations, resolving timer issues can be challenging without landlord involvement, potentially leaving you with inadequate hot water.
Advanced Settings and Customization
Optimize hot water usage by adjusting settings for showers, tank size, and immersion heater interaction to maximize efficiency and comfort with your system.
Optimizing Hot Water for Shower Usage
Many users find the standard Economy 7 settings insufficient for a satisfying shower, particularly if hot water demand is high. To optimize for showers, consider the boost timer function carefully. Boosting provides extra hot water during peak hours, but increases costs. Experiment with boost duration – a shorter boost might suffice for a quick wash, while a longer boost is needed for a longer shower.
If you consistently require a boost for showering, evaluate your tank’s immersion heater setup. Some tanks have two immersions; utilizing only the top immersion can save money while providing adequate hot water for basic needs. Remember, the immersion heater thermostat controls how long the water heats during both off-peak and boost periods. Adjusting this thermostat, if possible, can fine-tune water temperature and availability.
Adjusting for Different Water Tank Sizes
The Horstmann Economy 7 Quartz operates effectively with various water tank sizes, but optimal performance requires consideration of capacity. Smaller tanks heat up faster, potentially meaning the standard overnight cycle fully heats the water, with minimal need for boosting. Larger tanks, conversely, may struggle to reach temperature during the off-peak period alone.
For larger tanks, a longer boost duration might be necessary, especially with higher hot water demand. Monitor water temperature after the overnight cycle and adjust the boost timer accordingly. Understanding your household’s usage patterns is crucial; frequent boosting negates the cost savings of Economy 7. Consider if your tank has two immersions – utilizing only the top one can be sufficient for smaller households.
Understanding Immersion Heater Thermostat Interaction
The Horstmann Economy 7 Quartz doesn’t directly control the immersion heater; it times when power is supplied to it. The immersion heater’s thermostat dictates how long the heater runs during that timed period. If the water is cold, the thermostat will allow the heater to operate for the full hour. However, once the set temperature is reached, the thermostat switches off the heater, even within the hour.
This means the Quartz provides the opportunity to heat, but the thermostat prevents overheating. Understanding this interaction is key to efficient operation. A faulty thermostat can lead to insufficient heating or excessive energy use, so regular checks are recommended.
Cost Considerations
Upgrading to a digital unit is unlikely to recoup costs in the medium term. Factor in standing charges, and analyze savings versus a standard tariff.
Economy 7 vs. Standard Tariff Savings
The primary benefit of the Horstmann Economy 7 Quartz lies in its ability to leverage off-peak electricity rates. Economy 7 tariffs offer cheaper electricity during overnight hours, typically between 12:30 AM and 7:30 AM. This allows for significant savings on water heating costs, as the immersion heater operates during these reduced rate periods. However, realizing these savings depends on your hot water usage patterns.
If a substantial portion of your hot water demand is met during the overnight charging period, the savings can be considerable. Conversely, if you frequently rely on the boost timer for daytime heating, the cost advantage diminishes. A thorough cost check, including standing charges (around 60p), is crucial to determine actual savings compared to a standard tariff. Consider your lifestyle and water consumption habits to accurately assess the financial benefits.
Cost-Benefit Analysis of Digital Upgrades
While digital Economy 7 controllers offer advanced features like precise timing and potentially greater efficiency, a careful cost-benefit analysis is essential before upgrading from the Horstmann Economy 7 Quartz. The initial investment for a digital unit, plus installation costs, can be substantial. It’s unlikely these expenses will be fully recouped through energy savings in the medium term, especially given the Quartz’s proven reliability.
Assess your specific needs. If you require highly customized heating schedules or detailed monitoring, a digital upgrade might be worthwhile. However, for standard hot water requirements, the Quartz generally performs adequately. Prioritize understanding your water usage – showers, hand washing, or washing up – before committing to the expense of a digital replacement.
Impact of Standing Charges on Overall Cost
Understanding the impact of standing charges is crucial when evaluating the cost-effectiveness of an Economy 7 tariff and the Horstmann Economy 7 Quartz. These daily fixed charges, approximately 60p according to current estimates, apply regardless of your electricity consumption. Therefore, even with efficient off-peak heating, a significant portion of your bill remains constant.
When comparing Economy 7 to standard tariffs, factor in these standing charges alongside the unit price of electricity. If your hot water usage is low, the savings from cheaper overnight rates might be offset by the standing charge. Regularly check your smart meter readings to accurately assess your overall energy costs and determine if Economy 7 remains financially beneficial.
Maintenance and Safety
Regularly check the unit and wiring for potential hazards. Always prioritize safety when working with electricity, and be aware of possible risks.
Regular Checks and Maintenance
To ensure optimal performance and longevity of your Horstmann Economy 7 Quartz, implement a routine check schedule. Visually inspect the unit and associated wiring at least annually for any signs of damage, corrosion, or loose connections. Dust accumulation can impede functionality, so gently clean the exterior with a dry cloth.
Verify the timer is functioning correctly by observing its operation during both the overnight and boost cycles. If you notice inconsistencies, consult the troubleshooting section of this guide. It’s crucial to avoid any DIY repairs involving electrical components; always engage a qualified electrician for such tasks. Maintaining a clean and secure installation contributes significantly to safe and efficient operation.
Safety Precautions When Working with Electricity
Crucially, always disconnect the electrical supply at the consumer unit before undertaking any inspection or maintenance work on the Horstmann Economy 7 Quartz or its wiring. Never work with wet hands or in damp conditions. Electrical shock can be fatal.
If you are not confident or qualified to perform electrical work, do not attempt it. Engage a certified electrician. Avoid touching any exposed wires or terminals. Ensure all tools used are properly insulated. Be aware of potential hazards like damaged insulation or loose connections. Prioritize safety; it’s paramount when dealing with electricity.
Identifying Potential Hazards
Several hazards can arise with the Horstmann Economy 7 Quartz. Look for signs of water ingress around the unit or wiring, indicating a potential short circuit. Check for damaged or frayed cables, which pose an electrocution risk. Overheating, evidenced by melting plastic or a burning smell, requires immediate attention and disconnection of power.
Be mindful of the immersion heater itself; a faulty thermostat can lead to dangerously high water temperatures. Regularly inspect the tank for corrosion. If you notice any unusual noises or smells, or if the unit isn’t functioning as expected, investigate immediately – or consult an electrician.
Specific User Scenarios
Addressing diverse hot water needs – from multiple occupants to night showers – requires understanding boost timer adjustments and tank capacity optimization for efficient use.
Hot Water Needs for Multiple Occupants
When several people live in the household, the standard Economy 7 settings might prove insufficient, leading to quick depletion of hot water. Consider the peak usage times – mornings and evenings – and adjust the boost timer accordingly. If the tank consistently runs out, explore the possibility of utilizing both immersion heaters, if your tank is equipped with dual elements.
Running both immersions will increase electricity consumption during the off-peak hours, but could provide adequate hot water for everyone. Regularly monitor water usage patterns and experiment with boost durations to find the optimal balance between cost and convenience. Remember, a longer boost will consume more energy, so careful adjustment is key. Prioritize shower times to avoid simultaneous high demand.
Addressing Night Shower Requirements
For those preferring a night shower, the standard Economy 7 setup may require adjustments. The overnight heating cycle is designed for morning use, potentially leaving the tank cooled by evening. Utilize the boost timer strategically before your desired shower time. Experiment with boost durations – a longer boost ensures sufficient hot water, but increases costs.
Consider the tank’s recovery rate; how quickly it reheats. If boosting doesn’t provide enough hot water, assess if a larger tank or dual immersion heaters are viable options. Remember, relying heavily on the boost timer diminishes the cost-saving benefits of the Economy 7 tariff. Careful planning and monitoring are essential.
Optimizing for Hand Washing and Washing Up
If hot water demand primarily centers around hand washing and dishwashing, optimizing the Horstmann Economy 7 Quartz is achievable. Utilizing only the top immersion heater, if your tank has one, can significantly reduce energy consumption. This is because the top element heats a smaller volume of water, sufficient for these tasks.
Avoid frequent boosting, as it negates tariff benefits. Adjust the overnight heating cycle to align with your usage patterns. Monitor water temperature throughout the day; a slight temperature drop is acceptable for these needs. Prioritize efficient water usage habits to minimize reliance on the heater.
Technical Specifications
The Horstmann Economy 7 Quartz operates within a specific temperature range and has defined power consumption levels. Dimensions and weight vary based on the model.
Power Consumption Details
Understanding the Horstmann Economy 7 Quartz’s power consumption is crucial for accurate cost analysis. The unit itself draws a relatively small amount of power continuously to maintain time and timer functions. However, the primary power draw occurs when the immersion heater is activated during the off-peak Economy 7 tariff period.
The actual kilowatt-hours (kWh) used depend heavily on your water tank’s size, the initial water temperature, and the thermostat setting of the immersion heater. A colder tank will require more energy to heat. Furthermore, the standing charge associated with your electricity supply, approximately 60p, must be factored into the overall cost calculation. Monitoring your smart meter during heating cycles provides valuable insight into consumption patterns.
Operating Temperature Range
The Horstmann Economy 7 Quartz doesn’t directly control the water temperature; it manages when the immersion heater operates. The actual hot water temperature is determined by the immersion heater’s thermostat setting. Typically, immersion heaters are adjustable, allowing users to set a desired temperature, commonly between 60°C and 65°C (140°F and 149°F) to prevent legionella growth.
The Quartz unit functions effectively within standard household ambient temperatures. However, extreme cold may slightly impact the accuracy of its internal clock. It’s designed for consistent performance within a typical operating environment, ensuring reliable timing for off-peak heating and boost functions, regardless of minor temperature fluctuations.
Dimensions and Weight
The Horstmann Economy 7 Quartz is designed for compact installation, typically fitting within standard single-gang electrical back boxes. Its dimensions are approximately 145mm high x 86mm wide x 60mm deep, ensuring compatibility with most UK electrical setups. The unit’s weight is relatively light, around 200-250 grams, facilitating easy handling during installation and maintenance.
These dimensions and weight are crucial for installers to verify sufficient space within the existing electrical infrastructure. The lightweight design minimizes stress on mounting surfaces. Precise measurements should be taken before removing any existing timer to confirm a suitable fit for the Quartz unit.