Powrmatic NVx August Installations

Powrmatic NVx Installations – August 2017

We are just half way through the month and have completed lots more Powrmatic NVx heater installations around the UK. Here are some short case studies with photographs from some of the installations we have carried out. We can design, supply and install any type of heating appliance and equipment throughout the UK. We also offer a breakdown and maintenance service for existing equipment.

Clicking on the photographs will show a larger hi res picture in a separate window.

(1) Concrete Products Manufacturer
A few weeks ago we received an enquiry from a cast stone manufacturer in Northampton. On visiting site we were asked to quote to remove and replace some failed Reznor heaters. The site had large Air Handling units installed with damaged heat exchangers. After careful discussions with the client, they were removed and two Powrmatic NVx heaters were installed to replace them.

The overall size of the original units being Air Handlers was large, we had to patch up both inside and outside walls where the fresh air supply duct work was previously installed. As a company we have a pair of general builders who we employ direct. They visited site after our Gas Safe guys had been in and completed making good. Its handy having some experienced building operatives not only for patching up, but for opening up holes in buildings and safe roof working.

The client decided to retain the existing Smart Com controllers, we simply renewed the wiring and left the controllers in place. The site is dirty, there is plenty of concrete dust everywhere. For this reason a balanced flue was installed, drawing combustion air from outside the heated space to limit accumulation of debris within the burned section on the heater.

The old installation ran purely on full fresh air, contamination of the heater was limited but the additional fuel cost of heating outside air was a major concern. The big play off was using a standard unit heater to heat recycled air. Whilst the cost savings will be great and a major plus, contamination of the unit could become a major negative. One of the commitments made by the client was that the heaters would be blown out with compressed air regularly. Giving the fan a good brush down and blasting through into the tubular area of the heater will remove settled debris. They appreciate that they will have to do this to keep the new heaters in tip top condition, but given the savings on fuel they will still save money as the efficiency of the Powrmatic NVx is higher than the heaters removed.

As always, the Powrmatic NVx heaters ran up fine and commissioning was a simple task.










(2) Small Warehouse Unit
This installation only required a small heater, the client requested a suspended unit. Another Powrmatic NVx heater was selected and installed. A Heatmiser IQ+ controller was installed at low level for operating the unit and the gas main was installed in copper using press fittings. A warmairheaters.com own brand high level destratification fan was installed to bring the warmer air back from high level and to displace the cold air.

Powrmatic NVx Heater Powrmatic NVx Heater Powrmatic NVx Heater  Powrmatic NVx Heater


(3) Bi Directional Installation
For heating a long narrow space, the Bi Direction version of the NVx works exceptionally well. Historically two heaters would be used, one at either end of the building. Where site conditions allow, one single heater located in the middle of the heated space blowing both ways is generally satisfactory. A Heatmiser IQ + controller was installed and the gas main was ran in copper with press fittings. The Bi Directional heater is a very handy  unit in the right conditions and can work out cost effective.

Powrmatic NVx Heater

Powrmatic NVx Heater

Powrmatic NVx Heater

Powrmatic NVx Heater

(4) Powrmatic NVx Car Workshop
Another installation we carried out in a car workshop. Unit was suspended blowing down towards the working area. Again control was provided by a Heatmiser IQ+ and gas main was installed using copper and press fittings.

Powrmatic NVx Heater

Powrmatic NVx Heater

Powrmatic NVx Heater

Heatmiser IQ+

Gas MainGas Main

If we can help you with your next heating project please get in touch, we look forward to hearing from you.

For more information on Powrmatic Heaters, please contact us or visit Powrmatic

Chilled Water Pipework Installation

We were contacted back in May by a Birmingham company who required a chilled water system. This was to be installed to a factory under refurbishment in Birmingham. The customer had already decided on the supplier of the chiller and air blast cooler plant. A majority of the equipment was partially on site when we attended. They make extrusions and require large water baths to cure the moulded material as it leaves the process machines.

We discussed the scheme with the client and they had already prepared a drawing . This clearly identified what pipework they required installing. A site visit was carried out to verify the locations and to discuss valve positions, pipe runs etc directly with the client.

It was requested that we install the installation using Geberit Press Fit, specifically stainless steel. The client has a couple of large manufacturing plants with ageing galvanised steel pipework. They are planning to replace a majority of this over the coming years. Existing galvanised steel tube had provided a good service life. Having largely being untreated it has reached corrosion levels where replacement is now the only possible solution.

They wanted to see how the Geberit system worked and how it was installed. This project was to test its performance before investing in the tooling to carry out maintenance works themselves. We took a few samples of fittings with us including some large 108 mm and some 54 mm samples. We keep various samples at the office to show customers how the pipe crimps together. Additionally some photographs of other chilled water pipework systems we have installed were shown to the client. We demonstrated to the client how the unique press indicator works, so each joint can easily be identified as pressed.

After working over the drawings we established we would need 36 M of 76.1 mm tube, 258 M of 54 mm tube and 48 M of 35 mm tube. This was ordered from Geberit and delivered directly to the customers site. The order also contained 30 BSP reducing press tees, various elbows, flanges, valves and other BSP stainless steel fittings.

The chilled water system had 15 connection points around the factory, requiring 30 press Tee’s, and lever valves on each. The operating temperature of the main will be set to around 15 Degrees so there was no special requirement for low temperature valves. We used the Geberit BSP threaded reducing tee’s. The main runs are pressed into place and these provided a 2 inch BSP female connection to bush down to inch and a half for connection to a valve using a threaded nipple.

Isolation was provided to each leg to enable service and maintenance work. A final ring was formed using the 35 mm tube to form a bypass at the ends of the 54 mm tube. The 76.1 mm tube connected from the gantry outside the building. This was connected directly into a Tee and then reducing down to 54 mm left and right around the factory. The 76.1 mm tube was routed around to the outdoor chiller plant and connected using press flanges. Butterfly valves for the chilled water pipe were provided by the chiller plant installers.

On this occasion the client supplied a majority of the fixing hardware. They requested that we install slotted track with window brackets to the roof sections, then drops with threaded rod to form a support around the building. The client intends to install additional pipe work to the brackets so we were asked to install fairly long sections.

Our chilled water pipework was fixed to rubber lined Flamco rings. This was supported from the slotted channel using cut sections of threaded bar, channel nuts and flat plate washers. This provided a solid support system around the edge walls of the factory.

For the run along the gable end of the building, cantilever brackets were fixed to the wall. Threaded rod and chemical anchor were used for a secure holding. The further use of channel nuts and Flamco rings enabled the pipework to be accurately levelled where the wall was not square.

Penetrations to the exterior were carried out using a high performance drill and suitable core cutter. The building was constructed from engineering brick and the gable wall was nearly 2 foot thick without a cavity. The two holes themselves took a little over a day each to bore out. A suitable stainless steel liner was installed and the gap around the liner and brick work was made good.

On completion of the work we isolated all the valves and carried out a pressure test to the pipework using Nitrogen to check for leaks. Once the pipework is charged up to a known pressure, the Nitrogen source is turned off and isolated. The pressure in the pipework can then be monitored. After allowing for some stabilisation and a few pressure adjustments we determined the pipework was free from leaks. We are waiting for the system to be filled before we arrange for the pipework to be lagged and identification marking tape added.

After the first batch of equipment has been installed into the factory and connected, the remaining outlets will be plugged off. We have been requested to go back to site and install some hard piped drops in various locations. We have suggested that these are installed in press using unions. As the client moves the equipment around the building which they intend to do, the pipework drops can easily be removed and installed into other locations.

PW Maintenance has installed many chilled water pipework systems throughout the UK. We are able to work with stainless steel including press and fully welded solutions. PW Maintenance have also carried out many installations using solvent welded PVC pipe. Although we are able to install galvanised and steel bore tube, these materials are not ideal for chilled water pipework.

If you are looking to install new chilled water pipework or carry out repairs or modifications to your existing system, please contact us.

We have included some photographs below of the system as it was being installed.

Click on this link for more information on the Geberit Press system, don’t forget to come back to us to help you with your project.

Philip Hamer
PW Maintenance

Chilled Water Pipework Installation – Photographs

Click on a photograph so see a hi-resolution image.

Chilled Water Pipework Installation

Powrmatic Heater Replacement

Powrmatic Heater Replacement

Work has been steady since we came out of Winter, but its still good to know that customers are working on there heating systems during the summer. Orders are still coming in and we are still busy installing Powrmatic equipment and other makes of heater.

We were approached by a company who found us on the internet, to replace an old Powrmatic Heater.
A quote was supplied following a site visit and we were contracted to carry out the replacement.

We were asked to remove the old heater and remove it from site. The old flue was removed and the existing flashing was removed and the roof made good. We were asked to use the same roof penetration and not to make additional holes. A Deks flashing was used as usual to eliminate leaks and make a good weatherproof seal. The old mechanical time clock and thermostat was stripped out and replaced with new cable and controls. The existing gas main was cleaned up, tested for gas safety and connected to the heater. We found the original copper main had not been sleeved where it passed through the wall (a requirement to regulations) so we removed it and installed a suitable sleeve for compliance.

Our engineers carefully isolated the gas supplies, removed the old heater then installed the new unit supplied direct from Powrmatic. Space was limited inside the building due to equipment and stock so a Genie Superlift was used to drop the old heater and install the new one. Coupled up with another Heatmiser IQ+ controller, the system was commissioned same day and handed over to the customer. Now they just have to wait a while until they really need it!

If you are looking to replace your broken or aged warm air heating system then please contact us for top quality free and friendly advise!
We also supply only heating equipment on our wholesale website, Warmairheaters.

Powrmatic NVx Heater