Mounting template for fixing shelves - installation and setup
The mounting template is an invaluable tool for every plumber working with the ALPEX PRESS crimping systems who needs to quickly, accurately, and safely mount wall brackets for radiators or piping. This simple aid eliminates human error in measuring distances between holes and ensures that fittings are in the correct position before the actual crimping.
The key role of the template in the installation process
In practice, it often happens that without a template, installers rely on estimation or repeated measurements with a ruler, which significantly slows down the work and increases the risk of inaccurate pipe placement. The template functions as a fixed model that defines the exact distance between the bracket's inlet points, thus guaranteeing that the crimped joint will align with the radiator or valve threads.
When using the mounting template for mounting brackets PRESS - 100-150mm, you gain the certainty that the hole distance is maintained even if the bracket walls slightly vary or if you are working in hard-to-reach areas where traditional measuring tools are difficult to use.
Practical procedure for setting up and mounting
The installation process begins by placing the bracket in the desired location and using the template to mark the drilling or screwing points. If you are using a system with PRESS transition with external thread 1/2"Mx16, it is critical that the distance between the thread centers exactly matches the distance on the radiator; otherwise, stress will occur in the joint.
- Set the template to the required distance according to the type of bracket.
- Secure the bracket to the wall so that the template serves as a guide for the drill.
- Check the horizontal and vertical alignment before tightening the screws completely.
- Only after securing the bracket should you install the fittings and perform the crimping.
Selecting the correct template according to the system type
Not every template is suitable for every type of bracket, so it is necessary to verify whether the hole distance in your bracket corresponds to the available models. For standard home applications, a standard template for distances of 100 to 150 mm is sufficient, but for industrial solutions or special brackets, adjustment or the use of another type of mounting may be necessary.
An important part of the entire process is also the quality of the sealing ensured by O-rings for PRESS fittings brass - 26x3. Although the template solves the geometry, the proper function of the joint depends on the integrity of these rings, which must be clean and undamaged before the actual installation.
Collaboration with transitions and threads
The mounting template is not an isolated tool, but a key link in the chain leading to the final connection to the radiator via transitions. When working with PRESS transition with external thread 3/4"Mx20, it is essential that the template ensures the thread is in the same plane as the radiator body, otherwise you risk leaks caused by incorrect tightening of the nut.
This principle also applies to larger transitions, such as model 3/4"Mx26, where the tolerance for errors is even smaller due to the higher weight and torque when tightening. A properly set template thus directly affects the lifespan of the entire system and reduces the number of service interventions.
Technical details and tolerances during installation
Professional installation requires not only adherence to the pitch but also proper consideration of the thermal expansion of the material. When using brackets made of cast iron or steel, the dimensions can vary by several millimeters depending on the temperature of the carrier. The template should be set so that it allows a small clearance when fitting the transition, but at the same time ensures a secure positioning before crimping.
A critical point is also the orientation of the threads relative to the wall. If the bracket is mounted crooked, lateral stress is created on the screws and sealing elements, which can lead to a slow water leak over time. Therefore, it is essential to use a spirit level not only when mounting the template but also when performing the final check of the bracket position before tightening the end connections.
Impact of Uneven Surfaces on Accuracy
In older buildings, walls are often uneven, which can cause the radiator to have an adjacent space between the wall and the radiator body. In such cases, the mounting template must serve as a reference point for the highest point of the radiator, while the gaps must be filled with sealing shims or silicone. Ignoring this step leads to the template fixing the radiator in the wrong position, even though the template itself was applied correctly.
We recommend using flexible seals under the screw heads, which compensate for minor wall irregularities without compromising the solid consistency of the entire system. This ensures that the crimped joint remains aligned and is not subjected to bending moments.
Specifications for Different Pipe System Types
Although the mounting template is primarily designed for the ALPEX PRESS system, its operating principle is universal for other crimping systems with similar inlet geometries. Differences lie in the wall thickness of the radiator and the type of fitting used. For systems with larger pipe diameters, it is necessary to maintain sufficient distance between the holes to prevent mutual influence of heat and pressure in the sealing areas.
When working with polypropylene radiators (PP-R), it is important to consider their higher thermal expansion. In this case, it is advisable to leave a slightly larger gap between the radiator and the wall to prevent deformation of the radiator due to expansion when heated. The template serves here as a tool for quickly verifying whether the wall holes are symmetrically positioned relative to the future axis of the radiator.
| Type of radiator | Key parameter | Note for the template |
|---|---|---|
| Cast iron radiators | Precise thread spacing | The template fixes the position precisely at 100-150 mm |
| Steel radiators | Wall thickness tolerance | Check drilling depth according to screw type |
| Polypropylene (PP-R) | Thermal expansion | Ensure a gap for material movement |
Importance of Regular Maintenance and Inspection
The mounting template, although a simple tool, requires regular inspection of its integrity. During intensive use, the screw holes or guide grooves may wear out, leading to shifting and subsequent installation inaccuracy. We recommend checking at least once a month whether the dimensions of the template are still within the manufacturing tolerances using a calibration ruler.
It is also necessary to monitor the condition of the template surface. Rust or deposits can interfere with the precise seating of the radiator against the template. Cleaning and lubricating movable parts (if any) prolong the tool's lifespan and ensure long-term accuracy. If the template is damaged, never use it for critical installations, as the risk of error is too high.
Frequently Asked Questions
Do I always have to buy the template separately?
Most professional kits include the template as a basic accessory, but for one-off jobs, it is more cost-effective to buy it separately for long-term use.
What should I do if the distance between the holes on the radiator is outside the range of the template?
In this case, you must use individual measurement and marking, or order a custom-made template if it is for serial production or large quantities.
Is it possible to use the template for materials other than cast iron?
Yes, the template is used to determine the geometry of the holes, so it is universal for all radiator materials, provided they have standard thread dimensions.
Conclusion and Recommendations for Practice
Using a mounting template is the foundation of professional work with crimping systems, as it combines speed with accuracy and minimizes the risk of costly installation errors. An investment in a quality tool pays off not only in terms of time saved, but also in the long-term reliability of the heating system.
Do you have a question about this topic?
Not sure or dealing with a specific situation in your home? Write to us – we are happy to help.