Since this seems to be an existing system and is piped similar to your original sketch, id suggest that a lowloss header would be much easier to install as it would. These heating systems may have different temperature and flowrate requirements e. Your boiler, particularly the heat exchanger in you boiler, will only function at its peak efficiency when the water velocity passing through it is maintained within prescribed parameters. Heating systems where boilers are connected directly to the loads may have a variable flow rate caused by system control. Cooler return water from the heating circuits is mixed with water from the boiler in the low loss. Maintains correct flow of water through the boiler. Since this seems to be an existing system and is piped similar to your original sketch, id suggest that a low loss header would be much easier to install as it would require fewer piping changes. The common supply temperature sensor located of the lowloss header connects to the vitocontrols controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures.
Low loss header separates boiler circuit from the heating circuit and is usually applied in medium or high power rating heating systems practically, from 25 kw upwards, comprised of one or more boilers, particularly those with several heating circuits e. Whether youre looking for an installation and service manual or some simple guidance on how to use your boiler, we hope youll find what youre looking for in this downloads section. This low loss header is particularly important in the case of modern boiler systems, which specify the optimum parameters to ensure the boiler. The main purpose of this vaillant wh95 low loss header is to maintain the correct flow of water through the boiler and allow a constant temperature supply of water to reach multiple heating circuits downstream of the low loss header connection. Remove lowloss header and supplied accessories from carton see section entitled standard equipment on pages 8 and for a list.
The evomax range offers a number of key features that enables ease of installation, maintenance and operation. Lowloss headers serve as the means of providing hydraulic separation of primary and separately pumped secondary circuits, which can help mitigate the fluctuation of flow rates. Low loss header what it actually does why should i fit. After reading about low loss headers here i am wondering if this is the issue we are having, we have a rinnai boiler, installed last year by our company,with a low loss header and piped to the book, we had 3 zones all with circ, 1x 1radiant and 2 x34baseboard and we stubbed out for a future basement zone. I have read a few recent posts where vaillant have advised a low loss header is required, they may have changed something that requires one. A low loss header provides hydraulic separation between the boiler circuit and the heating circuit, regulating the flow rate and pressure, improving efficiency and performance. Low voltage terminals 230 mains voltage terminals vrc 693 outdoor sensor vr 10 low loss header sensor hot water secondary circulation pump set ecotec parameter d. That diagram and similar others in vaillant literature shows a low loss header and two external pumps, one for each heating circuit.
Mounting the low loss header 6 720 647 3b 201108 3. Greenstar low loss header installation and servicing. Vaillant s commercial systems draw on 140 years of experience. Remove low loss header and supplied accessories from carton see section entitled standard equipment on pages 8 and for a list of component parts included with your low loss header. Low loss header what it actually does why should i fit a. Low loss header wh160 for flow rates of 12000 lhr dn65 pn7. Low loss headers maintain the correct flow of water through the boiler and allow a constant temperature supply of water to reach multiple heating circuits downstream of the low loss header connection. Low loss headers culm stores distribution elterm ltd. Sep 08, 2014 vaillant technical support pointed me in that file at the hydraulic diagram on page 10, and told me to ignore the cylinder as i have a combi boiler. The multiple boiler system is available as a wall or frame mounted side by side configuration with the use of the relevant frame header kits.
For hydraulic separation constant flow rate in the heat source prevention of insufficient flow rate in the secondary circuits flow rates from 3 to 57 m3h pdf document that vaillant supplied, but there doesnt seem to be any way to do it. Our new low loss headers are suitable for most heat pump applications and are manufactured to an incredibly high standard with features usually found in. Choose the 3d model you would like to view by clicking on one on the 3 small images. I have read a few recent posts where vaillant have advised a low loss header is required, they may have changed something that. Lowloss headers maintain the correct flow of water through the boiler and allow a constant temperature supply of water to reach multiple heating circuits downstream of the low loss header connection. With a lowloss header, boilers can operate on a reliable, constant flowrate, which helps greatly extend the boilers lifespan. Feb 29, 2016 low loss headers are used to hydraulically separate the boilers from the system, saves hassle with varying flow rates through boilers as valves shut down. The main purpose of this vaillant wh95 lowloss header is to maintain the correct flow of water through the boiler and allow a constant temperature supply of water to reach multiple heating circuits downstream of the lowloss header connection. To achieve hydraulic separation you need a low loss header or traditional primarysecondary piping. Vaillant lowloss headers are only suitable for new clean systems up to 70kw net input with correctly inhibited water. Header low loss dn80 kit 355019 frame and header kit system design options 2. This video is about servicing boilers, the proper way.
Aids in providing a constant temperature supply of. In refirbishment installations the use of a low loss header has an additional benefit by allowing the existing system pumps to be either reused as they are or replaced at the same duty minimizing the need for time. Vaillant vuw 30655 hgb ecotec plus 835 water heater. What our servicing policy is, and what we do to your boiler on a service visit. Low loss header wh160 for flow rates of 12000 lhr dn65 pn7 resources. Low loss headers are only suitable for new, clean systems, up to 70kw net input with correctly inhibited water. Low loss header a low loss header allows flow separation within a hydronic system. The main purpose of this vaillant wh40 low loss header is to maintain the correct flow of water through the boiler and allow a constant temperature supply of water to reach multiple heating circuits downstream of the low loss header connection. Domestic boilers same heat output as commercial boiler, 10 year warranty, low maintenance costs. Vaillant technical support pointed me in that file at the hydraulic diagram on page 10, and told me to ignore the cylinder as i have a combi boiler. Vaillant ecotec pro boiler installation and maintenance. Then click and hold on the boiler to spin and move the image around.
Low loss headers play a vital role in ensuring that boilers operate at a constant flow rate, so why is there such a lack of design guidance. Vaillant has a full range of accessories including lowloss headers, plate heat exchangers, cascade rigs, vertical and. Maintaining the flow what is the role of a low loss header in commercial heating systems. Low loss headers are used to hydraulically separate the boilers from the system, saves hassle with varying flow rates through boilers as valves shut down. Low loss header what it actually does why should i fit a low loss header. The main purpose of this vaillant wh40 lowloss header is to maintain the correct flow of water through the boiler and allow a constant temperature supply of water to reach multiple heating circuits downstream of the lowloss header connection. We stock a huge range of flues and flue accessories to match your boiler, budget and installation. You would need to confirm this with them, although i cant see what having a low loss header would gain in a residential system.
The main purpose of this vaillant wh40 lowloss header is to maintain the correct flow of water through the boiler and allow a constant temperature supply of. View online installation and maintenance instructions manual for vaillant vuw 30655 hgb ecotec plus 835 water heater or simply click download button to examine the vaillant vuw 30655 hgb ecotec plus 835 guidelines offline on your desktop or laptop. Enter the first seven digits of the serial number for diagrams and parts lists. Ufh from vaillant combi boiler via vr 61 mixer controller.
Mar 16, 2015 this video is about servicing boilers, the proper way. Low loss header 70kw 1 14 insulated 4 x1 14 female. That diagram and similar others in vaillant literature shows a lowloss header and two external pumps, one for each heating circuit. Boiler manufactures should tell you what the specs are for each make and model. To achieve hydraulic separation you need a lowloss header or traditional primarysecondary piping. Low loss headers, also referred to as common headers, have been used as best practice heating system design for many years now. For your boiler ratings something like the spirocross ax125 would be suitable assuming 8060c which also gives airdirt separation. We talk about how they can help the efficiency of a heating system, how they are installed into the heating, how they. The common supply temperature sensor located of the low loss header connects to the vitocontrols controller ensuring optimum staging of the boilers and accurate control of system supply water temperatures. Buderus 7746900400 single boiler low loss header kit single boiler kit, low loss header with am10 weather compensation module must purchase with single boiler install. View and download vaillant ecotec vu 6564 installation and maintenance instructions manual online. Evomax, evomax cascade or evomax low height cascade.
Jun 06, 2018 low loss headers on heating systems explained with special guest drew styles. Available with a 5 year parts and labour warranty, the evomax is a reliable and efficient wall hung solution. Download installation and maintenance instructions manual of vaillant ecotec pro boiler for free or view it online on. Click the play button on the image on the right and youll be able to see evomax in fantastic 3d. This easily expandable modular system is available for inline, back to back and corner installations of up to eight ecotec 46, 65, 80, 100 or 120 wall hung commercial boilers. Vaillants precisionengineered cascade rigs offer enhanced efficiency and flexibility on outputs. Low loss header hydraulic block 0020223738 101 boiler with ebus control system monovalent domestic hot water cylinder low loss header 0020212762 104 boiler with ebus control system bivalent domestic hot water cylinder low loss header 0020223739 107 boiler with ebus control system heat pump with ebus control system multistorage tank hydraulic.
In addition, the lowloss header helps eliminate debris from the heating system. View and download vaillant ecotec vu 4664 installation and maintenance instructions manual online. For product availability in your area, please verify your zip code. Low loss headers serve as the means of providing hydraulic separation of primary and separately pumped secondary circuits, which can help mitigate the fluctuation of flow rates. Lowloss headers are only suitable for new, clean systems, up to 70kw net input with correctly inhibited water. Low loss header explained by bbc rogue traders boiler expert.
Low loss headers and low loss plate heat exchangers 37 cascade rigs 45 the complete system control range 68 vaillant training 73 vaillant advance 75 service and support 76. Separate zone for ufh on vaillant system diynot forums. Lowloss headers maintain the correct flow of water through the boiler and allow a constant temperature supply of water to reach multiple heating circuits downstream of the lowloss header connection. View product information and literature for lowloss headers. We take a look at the role they play and what to consider when installing them. Remove lowloss header and supplied accessories from carton see section entitled standard equipment on pages 8 and for a list of component parts included with your lowloss header. Service you would expect from a trusted uk company. Use of a low loss header will eliminate a lot of flow rate issues that arise when retro fitting a heat pump to an existing system. Vaillant low loss headers are only suitable for new clean systems up to 70kw net input with correctly inhibited water. In addition, the low loss header helps eliminate debris from the heating system. Low loss header wh160 for flow rates of 12000 lhr dn65 pn6 product features.
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