{"id":6569,"date":"2023-04-18T18:45:08","date_gmt":"2023-04-18T17:45:08","guid":{"rendered":"https:\/\/www.chatteris.biz\/blog\/?p=6569"},"modified":"2026-01-06T16:13:15","modified_gmt":"2026-01-06T16:13:15","slug":"new-gas-boiler-installation","status":"publish","type":"post","link":"https:\/\/www.chatteris.biz\/blog\/new-gas-boiler-installation\/","title":{"rendered":"Condensing Gas Boiler Swop"},"content":{"rendered":"\n<p><em>Updated 15 November 2025<\/em><\/p>\n\n\n\n<div class=\"gutentoc tocactive nostyle\"><div class=\"gutentoc-toc-wrap\"><div class=\"gutentoc-toc-title-wrap\"><div class=\"gutentoc-toc-title\">Table Of Contents<\/div><div id=\"open\" class=\"text_open\">show<\/div><\/div><div id=\"toclist\"><div class=\"gutentoc-toc__list-wrap\"><ul class=\"gutentoc-toc__list\"><li><a href=\"#linked-projectsinformation-to-boiler-swop\">Linked Projects\/Information to Boiler Swop<\/a><\/li><li><a href=\"#pre-works\">Pre-Works<\/a><\/li><li><a href=\"#radiators\">Radiators<\/a><\/li><li><a href=\"#external-sensor\">External Sensor<\/a><\/li><li><a href=\"#airing-cupboard-works\">Airing Cupboard Works<\/a><\/li><\/ul><\/div><\/div><\/div><\/div>\n\n\n\n<p>My existing, non condensing, Vaillant Thermocompact 24kW system boiler was installed when the house was built in 2002 and has worked really well, but with the price of gas its time for an upgrade.<\/p>\n\n\n\n<p>My chosen replacement is an Ideal Vogue Max 18kW condensing system boiler with priority domestic hot water capability and 10 years manufactures warranty which I bought from Screwfix, this boiler will modulate down to 3.9kW to match my heat loss at a given temperature, whilst also giving me a short hot water cylinder recovery time when required.<\/p>\n\n\n\n<p><strong>NOTE<\/strong> &#8211; Gas and commissioning works were undertaken by <a href=\"https:\/\/mrfixitgas.co.uk\/\" target=\"_blank\" rel=\"noreferrer noopener\">Mr Fix It Gas<\/a> (Gas Safe Engineer) who I would highly recommend.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"linked-projectsinformation-to-boiler-swop\">Linked Projects\/Information to Boiler Swop<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"sulphidation-filter-blog--here-\">Sulphidation filter blog <a href=\"https:\/\/www.chatteris.biz\/blog\/adding-sulphidation-filter-to-gas-boiler\/\">HERE<\/a><\/li>\n\n\n\n<li id=\"heat-loss-blog--here-\">Heat Loss blog <a href=\"https:\/\/www.chatteris.biz\/blog\/house-heat-loss-calculation\/\">HERE<\/a><\/li>\n\n\n\n<li id=\"condensate-runoff--blog--here-\">Condensate runoff  blog <a href=\"https:\/\/www.chatteris.biz\/blog\/installing-boiler-condensate-runoff\/\" target=\"_blank\" rel=\"noreferrer noopener\">HERE<\/a><\/li>\n\n\n\n<li id=\"controls-and-boiler-performance--here-\">Controls and boiler performance <a href=\"https:\/\/www.chatteris.biz\/blog\/ideal-vouge-18kw-system-boiler-weather-compensation-controls-and-performance\/\">HERE<\/a><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"pre-works\">Pre-Works<\/h3>\n\n\n\n<p>The following needed to be done in advance:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"upgrade-radiators-in-order-to-operate-at-a-lower-temperature-flow-rate\">Upgrade radiators in order to operate at a lower temperature flow rate,<\/li>\n\n\n\n<li id=\"make-wall-space-for-relocating-boiler-pipework-and-additional-expansion-vessel\">Make wall space for relocating boiler pipework and additional expansion vessel,<\/li>\n\n\n\n<li id=\"expose-existing-pipe-connections-in-the-garage-ceiling\">Expose existing pipe connections in the garage ceiling,<\/li>\n\n\n\n<li id=\"install-normally-open-motorised-valve-for-the-central-heating\">Install Normally Open motorised valve for the central heating,<\/li>\n\n\n\n<li id=\"rewire-the-wiring-centre-to-give-the-boiler-two-switched-lives-one-for-central-heating-and-the-other-for-priority-domestic-hot-water\">Rewire the wiring centre to give the boiler two switched lives, one for central heating and the other for Priority Domestic Hot Water,<\/li>\n\n\n\n<li id=\"remove-existing-electronic-water-temperature-control-from-unvented-cylinder\">Remove existing electronic water temperature control from unvented cylinder,<\/li>\n\n\n\n<li id=\"reinstate-unvented-cylinder-integral-thermostat-in-wiring-centre\">Reinstate unvented cylinder integral thermostat in wiring centre,<\/li>\n\n\n\n<li id=\"install-north-facing-weather-compensation-sensor-and-wire-back-to-boiler-location\">Install North Facing weather compensation sensor and wire back to boiler location,<\/li>\n\n\n\n<li id=\"replace-mechanical-frost-thermostat-with-electronic-version-and-wire-in\">Replace mechanical frost thermostat with electronic version and wire in,<\/li>\n\n\n\n<li id=\"install-new-boiler-isolation-switch-with-3a-fuse-holder-built-in\">Install new Boiler isolation switch with 3A fuse holder built in.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/02\/IMG_3838-Medium.jpeg\" alt=\"\" class=\"wp-image-6570\" style=\"aspect-ratio:1.3333333333333333;width:800px;height:auto\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/02\/IMG_3838-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/02\/IMG_3838-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/02\/IMG_3838-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Wall space cleared  around the old boiler and hole cut in the garage ceiling giving greater access to pipework,  ready for the existing boiler to be removed once the gas has been capped off, the gas work was carried out on the 11 April 23 by a local Gas Safe engineer.<\/p>\n\n\n\n<p>Once the gas was off by a gas safe engineer, power isolated and the system drained down, the boiler and flue were removed and open water pipes temporarily capped, the next job was then to line the wall with a thin ply and paint it black to neaten up the job.<\/p>\n\n\n\n<p>As boiler comes direct from Ideal, the communications wasn&#8217;t brilliant, I was notified at 16:50 the night before delivery, fortunately this was fine for me and it arrived on the 12 April just after 2pm, I had already picked the flue up from store in preparation for the big day.<\/p>\n\n\n\n<p>Once the new boiler arrived it was unpacked and all parts checked in case anything was missing or damaged, once happy, the new boilers template offered into position and levelled.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4323-Medium.jpeg\" alt=\"\" class=\"wp-image-6663\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4323-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4323-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4323-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The boiler is hung in place and supported by a bracket, everything required for this is within the box.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4337-Medium.jpeg\" alt=\"\" class=\"wp-image-6699\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4337-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4337-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4337-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The boiler installation were straightforward with the manufactures instructions being very comprehensive, with the gas still not connected, I  removed the room sealed boiler cover to access the electrical connections for the Weather Compensation sensor and the two switched lives, one for the heating and the other for priority domestic hot water. <\/p>\n\n\n\n<p>The Ideal Vogue Max comes with a magnetic filter which must be fitted to maintain the manufactures warranty, I also retained my existing Adey magnetic filter as this is perfect as a dosing pot for inhibitor addition.<\/p>\n\n\n\n<p>I included two dry pocket thermometers for flow and return water temperature measurement, my aim is to keep the boiler in condensing mode as much as I can.<\/p>\n\n\n\n<p>The system was cold flushed, pressure tested and dosed with 1.5l of Fernox F1 inhibitor before the gas engineer arrived on the14 April to upgrade the gas supply from 15mm to 22mm and make the final boiler connections.<\/p>\n\n\n\n<p>Ceiling hole closed off with a 60 minute fire resisting trap giving access to a cold water isolation valve and the completed installation was lagged using the<a href=\"https:\/\/drpipe.co.uk\/product\/tube-lagger-pro\/\" target=\"_blank\" rel=\"noreferrer noopener\"> Dr Pipe lagging pro <\/a>to give me perfect cuts.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4372-Medium.jpeg\" alt=\"\" class=\"wp-image-6656\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4372-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4372-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4372-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Nearly finished, just waiting for the Adey thermal jacket to arrive.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4398-Medium.jpeg\" alt=\"\" class=\"wp-image-6694\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4398-Medium.jpeg 576w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4398-Medium-225x300.jpeg 225w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/figure>\n<\/div>\n\n\n<p>28 April 23, commissioning and Benchmark completed and registered, today will be the first time my unvented hot water cylinder is getting 80<sup>0<\/sup>C of indirect heating at high fire of 18kW.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4404-1024x768.jpeg\" alt=\"\" class=\"wp-image-6707\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4404-1024x768.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4404-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4404-768x576.jpeg 768w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4404-1536x1152.jpeg 1536w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4404.jpeg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>I haven&#8217;t yet balanced the radiators to get the greatest efficiencies, but the weather compensation is modulating the central heating water flow temperature to 49<sup>o<\/sup>C based on the external ambient temperature of 13<sup>o<\/sup>C.<\/p>\n\n\n\n<p>The return flow temperature of 40<sup>o<\/sup>C, is well within the condensing range (&lt;55<sup>o<\/sup>C), however, I do need to adjust my radiators to get an equal temperature differential across them all to maximise efficiencies.<\/p>\n\n\n\n<p>Few points to note &#8211; The cold fill supply is regulated down to 1.5 bar so I can leave this connected and open without risk of over-pressurisation when bleeding radiators for maintenance.<\/p>\n\n\n\n<p>Thermal jacket from Adey for the Magnaclean fitted, bit disappointed that Ideal do not sell an insulated jacket for their filter as it is wasting a lot thermal energy.<\/p>\n\n\n\n<p>Last job was to test the system water quality:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li id=\"ph-7-8\">pH 7-8<\/li>\n\n\n\n<li id=\"hardness-60ppm-system-filled-with-softened-water\">Hardness 60ppm (system filled with softened water)<\/li>\n\n\n\n<li id=\"turbidity-base-target-clearly-observed\">Turbidity, base target clearly observed<\/li>\n\n\n\n<li id=\"fernox-inhibitor-concentration-tested-by-titration-test-kit-and-ok\">Fernox Inhibitor concentration tested by titration test kit and OK<\/li>\n<\/ul>\n\n\n\n<p>The gas engineer commented that my CO detector was in the wrong location to work effectively, ideally this should be 150mm down from the ceiling.<\/p>\n\n\n\n<p> So, I removed the detector from the boiler back board and shifted it to where it needed to be :-), hence the two following pictures &#8211;<\/p>\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"6721\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4446-Medium.jpeg\" alt=\"\" class=\"wp-image-6721\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4446-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4446-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4446-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" data-id=\"6720\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4447-Medium.jpeg\" alt=\"\" class=\"wp-image-6720\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4447-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4447-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4447-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"radiators\">Radiators<\/h3>\n\n\n\n<p>The house originally had 13 Purmo panel radiators, I did upgrade one of these to a larger Stelrad K2 type as the bedroom over the garage was undersized a few years ago.<\/p>\n\n\n\n<p>The Heat Loss calculations linked earlier, determined that a total of 9 radiators would needed upsizing to meet the heat losses at the lower radiator flow temperatures of DT30 to keep the boiler in the condensing range as much as possible.<\/p>\n\n\n<div class=\"wp-block-image is-style-zoooom\">\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;69ecd41aacf33&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"69ecd41aacf33\" class=\"aligncenter size-large wp-lightbox-container\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"732\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/21-March-23-radiator-placement-1024x732.jpg\" alt=\"\" class=\"wp-image-8514\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/21-March-23-radiator-placement-1024x732.jpg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/21-March-23-radiator-placement-300x214.jpg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/21-March-23-radiator-placement-768x549.jpg 768w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/21-March-23-radiator-placement-1536x1098.jpg 1536w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/21-March-23-radiator-placement-2048x1464.jpg 2048w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\taria-label=\"Enlarge\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.imageButtonRight\"\n\t\t\tdata-wp-style--top=\"state.imageButtonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewBox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n<\/div>\n\n\n<p>The pipework to the radiators is a combination of 10mm plastic pipe behind the dot and dab plasterboard walls, transitioning to 10mm copper pipe for the final connection to the radiators, fortunately all the downstairs radiator lock shield valves have inbuilt drain off valves, making removal and replacement of the radiators a lot easier.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4264-Medium.jpeg\" alt=\"\" class=\"wp-image-6627\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4264-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4264-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4264-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Lounge radiator draining down with the laser setup to project a line through the centre of the radiator tails.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4265-Medium.jpeg\" alt=\"\" class=\"wp-image-6628\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4265-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4265-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4265-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Radiator removed, I used <a href=\"https:\/\/www.amazon.co.uk\/dp\/B01MT141UC\/\" target=\"_blank\" rel=\"noreferrer noopener\">Plumb Tubs<\/a> and a <a href=\"https:\/\/www.amazon.co.uk\/Folding-Water-Bucket-Collapsible-Lightweight\/dp\/B076Z5PFJK\/?th=1\" target=\"_blank\" rel=\"noreferrer noopener\">20l foldable bucket<\/a> to catch any drips, before lifting the radiator off its brackets, I fitted <a href=\"https:\/\/www.amazon.co.uk\/Grakob-Plastic-Thumbs-Radiator-Capping\/dp\/B0721YL264\" target=\"_blank\" rel=\"noreferrer noopener\">Plumb Thumbs<\/a> to avoid any dirty water getting on the carpet.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4266-Medium.jpeg\" alt=\"\" class=\"wp-image-6629\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4266-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4266-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4266-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>New radiator mounted with insulated foil reflector behind it to try and conserve useful heat.  Using the laser level line previously set up, I marked up 20mm from this which is to the bottom of the mounting brackets, I used a combination of <a href=\"https:\/\/www.amazon.co.uk\/Gripit-Brown-20mm-Pack-8\/dp\/B00S52UJ1K\/\" target=\"_blank\" rel=\"noreferrer noopener\">Grip It<\/a> (Brown) and <a href=\"https:\/\/www.amazon.co.uk\/Corefix-PLUS30-Bracket-Plasterboard-Fixing\/dp\/B07B3XKGBZ\" target=\"_blank\" rel=\"noreferrer noopener\">Corefix<\/a> fixings as this is a heavy radiator at 37 Kg.<\/p>\n\n\n\n<p>As you can see the pipework will need adjusting to get the bend back where the vertical pencil line is.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4267-Medium.jpeg\" alt=\"\" class=\"wp-image-6630\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4267-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4267-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4267-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Using a Multitool I exposed more of the pipework back to the plastic\/copper coupling, but needed to cut the wall back even further so I could get the correct positioning in line with the pencil mark.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4270-Medium.jpeg\" alt=\"\" class=\"wp-image-6631\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4270-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4270-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4270-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The coupling come off the pipes by prizing the white end cap of and then pushing the collet towards the fitting, (I used a 10mm open ended spanner for this), and at the same time pull on the pipe.<\/p>\n\n\n\n<p>I needed to shorten the plastic pipe, so I used pipe shears to give me a neat edge, then I used a <a href=\"https:\/\/www.screwfix.com\/p\/jg-speedfit-superseal-plastic-push-fit-pipe-inserts-10mm-10-pack\/84981\" target=\"_blank\" rel=\"noreferrer noopener\">10mm plastic pipe insert<\/a> from Screwfix, before reassembly.<\/p>\n\n\n\n<p>Using 10mm copper pipe and a pipe bender, I formed the pipe to the radiator.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4272-Medium.jpeg\" alt=\"\" class=\"wp-image-6632\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4272-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4272-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4272-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>The other side of the radiator only needed the copper pipe extending although it was a longer wall chase.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4273-Medium.jpeg\" alt=\"\" class=\"wp-image-6633\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4273-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4273-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4273-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Radiator all piped up and tested for leaks, now ready for hole filling.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4294-Medium.jpeg\" alt=\"\" class=\"wp-image-6634\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4294-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4294-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4294-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Over the exposed pipes in the wall I used a foiled bubble wrap before applying a plaster bonding coat, once gone off I used a <a href=\"https:\/\/www.screwfix.com\/p\/no-nonsense-interior-ready-mixed-filler-white-off-white-1kg\/555gt\" target=\"_blank\" rel=\"noreferrer noopener\">white filler<\/a> and flattened this to a smooth surface.<\/p>\n\n\n\n<p>A few coats of sealer, then paint and a new<a href=\"https:\/\/www.screwfix.com\/p\/talon-10mm-pipe-collar-white-10-pack\/18405\" target=\"_blank\" rel=\"noreferrer noopener\"> collars<\/a>  at each end, and the job was done.<\/p>\n\n\n\n<p><strong>Update<\/strong>: It has been 2 years since I updated the radiator in the WC at the same time as I did most of the others, the WC one was changed not because it was undersized, but because it was showing signs of rusting on the bottom.<\/p>\n\n\n\n<p>I bought a replacement radiator from UK Radiators and the paint is coming off the bottom, so the quality isn&#8217;t brilliant \ud83d\ude41<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_1405-Medium.jpeg\" alt=\"WC Rad\" class=\"wp-image-8516\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_1405-Medium.jpeg 576w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_1405-Medium-225x300.jpeg 225w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/figure>\n<\/div>\n\n\n<h3 class=\"wp-block-heading\" id=\"external-sensor\">External Sensor<\/h3>\n\n\n\n<p>I bought the Ideal OS2 weather compensation sensor off eBay, fitting was straightforward on the external North Face of the house at a height equal to that of the upstairs floor.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4311-Medium.jpeg\" alt=\"\" class=\"wp-image-6640\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4311-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4311-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4311-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_3611-Medium.jpeg\" alt=\"\" class=\"wp-image-6635\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_3611-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_3611-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_3611-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Only two 0.75mm<sup>2 <\/sup>wires are needed back to the boiler from the sensor for direct connection within the boiler.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"airing-cupboard-works\">Airing Cupboard Works<\/h3>\n\n\n\n<p>This is the location of my unvented cylinder and two existing normally closed motorised valves as I have a &#8216;S&#8217; Plan system which needed modification into an X Plan.<\/p>\n\n\n\n<p>First job was the removal of my ESi electronic hot water cylinder temperature control unit which I blogged the installation of <a href=\"https:\/\/www.chatteris.biz\/blog\/electronic-hot-water-cylinder-thermostat\/\" target=\"_blank\" rel=\"noreferrer noopener\">HERE<\/a>, with all power isolated, the cabling was removed from the wiring centre.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4309-Medium.jpeg\" alt=\"\" class=\"wp-image-6637\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4309-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4309-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4309-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>After removal of the ESi unit I blanked the 20mm hole with a <a href=\"https:\/\/www.cef.co.uk\/catalogue\/products\/1779981-20mm-blanking-plug-ip68-grey?msclkid=7f3a075b4e5e1449fce66368b6e6fffc&amp;gclsrc=3p.ds\" target=\"_blank\" rel=\"noreferrer noopener\">plug<\/a>.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4310-Medium.jpeg\" alt=\"\" class=\"wp-image-6638\" srcset=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4310-Medium.jpeg 1024w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4310-Medium-300x225.jpeg 300w, https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2023\/04\/IMG_4310-Medium-768x576.jpeg 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>While the wiring centre was open and power off, I replaced the Normally Closed central heating motorised valve with a Normally Open version, this modification is required to enable the priority domestic hot water to operate.<\/p>\n\n\n\n<p>The wiring was then modified so that when Hot Water is called for, a switched live from the Hive Receiver operates both motorised valves at the same time, the live wire to the motors is in series with the unvented cylinders thermostat so that when the cylinders water is at the correct temperature, or there is and overtemperature, the thermostat will open, removing the live connection to the motors.<\/p>\n\n\n\n<p>This will cause both motorised valves to return to their default state of Central Heating &#8211; OPEN, Hot Water &#8211; CLOSED.<\/p>\n\n\n\n<p>In normal operation for hot water, the motorised valve will open and in so doing switch a live feed to S2 on the boiler, triggering a higher output water temperature.<\/p>\n\n\n\n<p><strong><a href=\"#linked-projectsinformation-to-boiler-swop\">Jump to linked projects<\/a><\/strong><\/p>\n\n\n\t<div class=\"wrap_svl_center\">\r\n\t<div class=\"wrap_svl_center_box\">\r\n\t<div class=\"wrap_svl\" id=\"body_drag_8617\">\r\n\t\t<div class=\"images_wrap\">\r\n                            <img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/IMG_1840-Medium.jpeg\" alt=\"boiler\">\r\n            \t\t<\/div>\t\r\n\t\t \t\t \t\t <div class=\"drag_element tips \" style=\"top:64.71%;left:26.91%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path d=&quot;M153.7,153.7C57.9,249.5,10,365.3,10,499c0,135.7,47.9,251.5,143.7,347.3l0,0C249.5,942.1,363.3,990,499,990c135.7,0,251.5-47.9,347.3-143.7C942.1,750.5,990,634.7,990,499c0-135.7-47.9-249.5-143.7-345.3l0,0C750.5,57.9,634.7,10,499,10C365.3,10,249.5,57.9,153.7,153.7z M209.6,211.6l2-2C289.4,129.7,387.2,89.8,499,89.8c113.8,0,209.6,39.9,291.4,121.8c79.8,77.8,119.8,175.6,119.8,287.4c0,113.8-39.9,209.6-119.8,291.4C708.6,870.3,612.8,910.2,499,910.2c-111.8,0-209.6-39.9-287.4-119.8C129.8,708.6,89.8,612.8,89.8,499C89.8,387.2,129.8,289.4,209.6,211.6z&quot;\/&gt;&lt;path d=&quot;M293.4,331.3c0,12,4,22,12,29.9L443.1,497L305.4,632.7c-8,8-12,18-12,29.9c0,10,4,18,12,26c8,8,18,12,28,12c12,0,20-4,27.9-10L499,552.9l135.7,137.7c8,6,16,10,28,10c12,0,21.9-4,27.9-10c8-8,12-18,12-28c0-12-4-21.9-12-29.9L554.9,497l135.7-135.7c8-8,12-18,12-27.9c0-12-4-22-12-29.9c-6-8-16-12-25.9-12c-12,0-21.9,4-29.9,12L499,441.1L363.3,303.4c-8-8-18-12-29.9-12c-10,0-20,4-28,12C297.4,311.4,293.4,321.4,293.4,331.3z&quot;\/&gt;&lt;\/g&gt;&lt;\/svg&gt;&lt;\/span&gt;\r\n\t\t\t\t\t\t&lt;p&gt;Ideal Vogue Max 18kW System Boiler using X-Plan, details of the installation are &lt;a href=&quot;https:\/\/www.chatteris.biz\/blog\/new-gas-boiler-installation\/&quot;&gt;HERE&lt;\/a&gt;.&lt;\/p&gt;\n\t\t\t\t\t&lt;\/div&gt;\r\n\t\t\t \t\t \t\t \">\r\n\t\t \t\t\t\t\t \t\t\t\t\t \t\t\t<div class=\"pins_animation ihotspot_pulse\" style=\"top:-20px;left:-20px;height:40px;width:40px\"><\/div>\r\n\t\t\t \t\t\t\t\t \t\t<img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/orange-question-mark.png\" class=\"pins_image ihotspot_hastooltop\" style=\"top:-20px;left:-20px\" alt=\"Ideal Vogue Max 18kW System Boiler\">\r\n\t\t\t \t\t\t\t \t\t\t\t \t<\/div>\r\n\t\t <\/div>\r\n\t\t \t\t <div class=\"drag_element tips \" style=\"top:83.98%;left:80.38%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path d=&quot;M153.7,153.7C57.9,249.5,10,365.3,10,499c0,135.7,47.9,251.5,143.7,347.3l0,0C249.5,942.1,363.3,990,499,990c135.7,0,251.5-47.9,347.3-143.7C942.1,750.5,990,634.7,990,499c0-135.7-47.9-249.5-143.7-345.3l0,0C750.5,57.9,634.7,10,499,10C365.3,10,249.5,57.9,153.7,153.7z M209.6,211.6l2-2C289.4,129.7,387.2,89.8,499,89.8c113.8,0,209.6,39.9,291.4,121.8c79.8,77.8,119.8,175.6,119.8,287.4c0,113.8-39.9,209.6-119.8,291.4C708.6,870.3,612.8,910.2,499,910.2c-111.8,0-209.6-39.9-287.4-119.8C129.8,708.6,89.8,612.8,89.8,499C89.8,387.2,129.8,289.4,209.6,211.6z&quot;\/&gt;&lt;path d=&quot;M293.4,331.3c0,12,4,22,12,29.9L443.1,497L305.4,632.7c-8,8-12,18-12,29.9c0,10,4,18,12,26c8,8,18,12,28,12c12,0,20-4,27.9-10L499,552.9l135.7,137.7c8,6,16,10,28,10c12,0,21.9-4,27.9-10c8-8,12-18,12-28c0-12-4-21.9-12-29.9L554.9,497l135.7-135.7c8-8,12-18,12-27.9c0-12-4-22-12-29.9c-6-8-16-12-25.9-12c-12,0-21.9,4-29.9,12L499,441.1L363.3,303.4c-8-8-18-12-29.9-12c-10,0-20,4-28,12C297.4,311.4,293.4,321.4,293.4,331.3z&quot;\/&gt;&lt;\/g&gt;&lt;\/svg&gt;&lt;\/span&gt;\r\n\t\t\t\t\t\t&lt;p&gt;Ideal magnetic filter which was part of the warranty requirements of the Vogue Max, as this was a point of thermal losses, I made an insulated jacket, details of which are &lt;a href=&quot;https:\/\/www.chatteris.biz\/blog\/ideal-system-filter-insulated-jacket\/&quot;&gt;HERE&lt;\/a&gt;.&lt;\/p&gt;\n\t\t\t\t\t&lt;\/div&gt;\r\n\t\t\t \t\t \t\t \">\r\n\t\t \t\t\t\t\t \t\t\t\t\t \t\t\t<div class=\"pins_animation ihotspot_pulse\" style=\"top:-20px;left:-20px;height:40px;width:40px\"><\/div>\r\n\t\t\t \t\t\t\t\t \t\t<img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/orange-question-mark.png\" class=\"pins_image ihotspot_hastooltop\" style=\"top:-20px;left:-20px\" alt=\"Ideal Filter\">\r\n\t\t\t \t\t\t\t \t\t\t\t \t<\/div>\r\n\t\t <\/div>\r\n\t\t \t\t <div class=\"drag_element tips \" style=\"top:58.46%;left:81.42%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path d=&quot;M153.7,153.7C57.9,249.5,10,365.3,10,499c0,135.7,47.9,251.5,143.7,347.3l0,0C249.5,942.1,363.3,990,499,990c135.7,0,251.5-47.9,347.3-143.7C942.1,750.5,990,634.7,990,499c0-135.7-47.9-249.5-143.7-345.3l0,0C750.5,57.9,634.7,10,499,10C365.3,10,249.5,57.9,153.7,153.7z M209.6,211.6l2-2C289.4,129.7,387.2,89.8,499,89.8c113.8,0,209.6,39.9,291.4,121.8c79.8,77.8,119.8,175.6,119.8,287.4c0,113.8-39.9,209.6-119.8,291.4C708.6,870.3,612.8,910.2,499,910.2c-111.8,0-209.6-39.9-287.4-119.8C129.8,708.6,89.8,612.8,89.8,499C89.8,387.2,129.8,289.4,209.6,211.6z&quot;\/&gt;&lt;path d=&quot;M293.4,331.3c0,12,4,22,12,29.9L443.1,497L305.4,632.7c-8,8-12,18-12,29.9c0,10,4,18,12,26c8,8,18,12,28,12c12,0,20-4,27.9-10L499,552.9l135.7,137.7c8,6,16,10,28,10c12,0,21.9-4,27.9-10c8-8,12-18,12-28c0-12-4-21.9-12-29.9L554.9,497l135.7-135.7c8-8,12-18,12-27.9c0-12-4-22-12-29.9c-6-8-16-12-25.9-12c-12,0-21.9,4-29.9,12L499,441.1L363.3,303.4c-8-8-18-12-29.9-12c-10,0-20,4-28,12C297.4,311.4,293.4,321.4,293.4,331.3z&quot;\/&gt;&lt;\/g&gt;&lt;\/svg&gt;&lt;\/span&gt;\r\n\t\t\t\t\t\t&lt;p&gt;Magnaclean Pro2 magnetic filter, this was used on my earlier boiler and it is not only a good filter, it allows dosing of heating water with inhibitors easily, so I kept it in.&lt;\/p&gt;\n\t\t\t\t\t&lt;\/div&gt;\r\n\t\t\t \t\t \t\t \">\r\n\t\t \t\t\t\t\t \t\t\t\t\t \t\t\t<div class=\"pins_animation ihotspot_pulse\" style=\"top:-20px;left:-20px;height:40px;width:40px\"><\/div>\r\n\t\t\t \t\t\t\t\t \t\t<img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/orange-question-mark.png\" class=\"pins_image ihotspot_hastooltop\" style=\"top:-20px;left:-20px\" alt=\"Magnaclean Pro2\">\r\n\t\t\t \t\t\t\t \t\t\t\t \t<\/div>\r\n\t\t <\/div>\r\n\t\t \t\t <div class=\"drag_element tips \" style=\"top:10.42%;left:78.82%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path d=&quot;M153.7,153.7C57.9,249.5,10,365.3,10,499c0,135.7,47.9,251.5,143.7,347.3l0,0C249.5,942.1,363.3,990,499,990c135.7,0,251.5-47.9,347.3-143.7C942.1,750.5,990,634.7,990,499c0-135.7-47.9-249.5-143.7-345.3l0,0C750.5,57.9,634.7,10,499,10C365.3,10,249.5,57.9,153.7,153.7z M209.6,211.6l2-2C289.4,129.7,387.2,89.8,499,89.8c113.8,0,209.6,39.9,291.4,121.8c79.8,77.8,119.8,175.6,119.8,287.4c0,113.8-39.9,209.6-119.8,291.4C708.6,870.3,612.8,910.2,499,910.2c-111.8,0-209.6-39.9-287.4-119.8C129.8,708.6,89.8,612.8,89.8,499C89.8,387.2,129.8,289.4,209.6,211.6z&quot;\/&gt;&lt;path d=&quot;M293.4,331.3c0,12,4,22,12,29.9L443.1,497L305.4,632.7c-8,8-12,18-12,29.9c0,10,4,18,12,26c8,8,18,12,28,12c12,0,20-4,27.9-10L499,552.9l135.7,137.7c8,6,16,10,28,10c12,0,21.9-4,27.9-10c8-8,12-18,12-28c0-12-4-21.9-12-29.9L554.9,497l135.7-135.7c8-8,12-18,12-27.9c0-12-4-22-12-29.9c-6-8-16-12-25.9-12c-12,0-21.9,4-29.9,12L499,441.1L363.3,303.4c-8-8-18-12-29.9-12c-10,0-20,4-28,12C297.4,311.4,293.4,321.4,293.4,331.3z&quot;\/&gt;&lt;\/g&gt;&lt;\/svg&gt;&lt;\/span&gt;\r\n\t\t\t\t\t\t&lt;p&gt;Frost Protection thermostats, these are now used for remote alerting via Home Assistant and are no longer connected to the boiler as overriding of heating is not possible with Opentherm Gateway.&lt;\/p&gt;\n&lt;p&gt;Installation of frost protection is blogged &lt;a href=&quot;https:\/\/www.chatteris.biz\/blog\/central-heating-frost-protection\/&quot;&gt;HERE&lt;\/a&gt;.&lt;\/p&gt;\n&lt;p&gt;I now rely on the boilers in built frost protection.&lt;\/p&gt;\n\t\t\t\t\t&lt;\/div&gt;\r\n\t\t\t \t\t \t\t \">\r\n\t\t \t\t\t\t\t \t\t\t\t\t \t\t\t<div class=\"pins_animation ihotspot_pulse\" style=\"top:-20px;left:-20px;height:40px;width:40px\"><\/div>\r\n\t\t\t \t\t\t\t\t \t\t<img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/orange-question-mark.png\" class=\"pins_image ihotspot_hastooltop\" style=\"top:-20px;left:-20px\" alt=\"Frost Protection\">\r\n\t\t\t \t\t\t\t \t\t\t\t \t<\/div>\r\n\t\t <\/div>\r\n\t\t \t\t <div class=\"drag_element tips \" style=\"top:84.11%;left:34.2%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path d=&quot;M153.7,153.7C57.9,249.5,10,365.3,10,499c0,135.7,47.9,251.5,143.7,347.3l0,0C249.5,942.1,363.3,990,499,990c135.7,0,251.5-47.9,347.3-143.7C942.1,750.5,990,634.7,990,499c0-135.7-47.9-249.5-143.7-345.3l0,0C750.5,57.9,634.7,10,499,10C365.3,10,249.5,57.9,153.7,153.7z M209.6,211.6l2-2C289.4,129.7,387.2,89.8,499,89.8c113.8,0,209.6,39.9,291.4,121.8c79.8,77.8,119.8,175.6,119.8,287.4c0,113.8-39.9,209.6-119.8,291.4C708.6,870.3,612.8,910.2,499,910.2c-111.8,0-209.6-39.9-287.4-119.8C129.8,708.6,89.8,612.8,89.8,499C89.8,387.2,129.8,289.4,209.6,211.6z&quot;\/&gt;&lt;path d=&quot;M293.4,331.3c0,12,4,22,12,29.9L443.1,497L305.4,632.7c-8,8-12,18-12,29.9c0,10,4,18,12,26c8,8,18,12,28,12c12,0,20-4,27.9-10L499,552.9l135.7,137.7c8,6,16,10,28,10c12,0,21.9-4,27.9-10c8-8,12-18,12-28c0-12-4-21.9-12-29.9L554.9,497l135.7-135.7c8-8,12-18,12-27.9c0-12-4-22-12-29.9c-6-8-16-12-25.9-12c-12,0-21.9,4-29.9,12L499,441.1L363.3,303.4c-8-8-18-12-29.9-12c-10,0-20,4-28,12C297.4,311.4,293.4,321.4,293.4,331.3z&quot;\/&gt;&lt;\/g&gt;&lt;\/svg&gt;&lt;\/span&gt;\r\n\t\t\t\t\t\t&lt;p&gt;Sulphidation filter installed to reduce gas entrained particulates entering the boilers gas valve, details of the installation are &lt;a href=&quot;https:\/\/www.chatteris.biz\/blog\/adding-sulphidation-filter-to-gas-boiler\/&quot;&gt;HERE&lt;\/a&gt;.&lt;\/p&gt;\n\t\t\t\t\t&lt;\/div&gt;\r\n\t\t\t \t\t \t\t \">\r\n\t\t \t\t\t\t\t \t\t\t\t\t \t\t\t<div class=\"pins_animation ihotspot_pulse\" style=\"top:-20px;left:-20px;height:40px;width:40px\"><\/div>\r\n\t\t\t \t\t\t\t\t \t\t<img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/orange-question-mark.png\" class=\"pins_image ihotspot_hastooltop\" style=\"top:-20px;left:-20px\" alt=\"Sulphidation Filter\">\r\n\t\t\t \t\t\t\t \t\t\t\t \t<\/div>\r\n\t\t <\/div>\r\n\t\t \t\t <div class=\"drag_element tips \" style=\"top:83.85%;left:20.31%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path d=&quot;M153.7,153.7C57.9,249.5,10,365.3,10,499c0,135.7,47.9,251.5,143.7,347.3l0,0C249.5,942.1,363.3,990,499,990c135.7,0,251.5-47.9,347.3-143.7C942.1,750.5,990,634.7,990,499c0-135.7-47.9-249.5-143.7-345.3l0,0C750.5,57.9,634.7,10,499,10C365.3,10,249.5,57.9,153.7,153.7z M209.6,211.6l2-2C289.4,129.7,387.2,89.8,499,89.8c113.8,0,209.6,39.9,291.4,121.8c79.8,77.8,119.8,175.6,119.8,287.4c0,113.8-39.9,209.6-119.8,291.4C708.6,870.3,612.8,910.2,499,910.2c-111.8,0-209.6-39.9-287.4-119.8C129.8,708.6,89.8,612.8,89.8,499C89.8,387.2,129.8,289.4,209.6,211.6z&quot;\/&gt;&lt;path d=&quot;M293.4,331.3c0,12,4,22,12,29.9L443.1,497L305.4,632.7c-8,8-12,18-12,29.9c0,10,4,18,12,26c8,8,18,12,28,12c12,0,20-4,27.9-10L499,552.9l135.7,137.7c8,6,16,10,28,10c12,0,21.9-4,27.9-10c8-8,12-18,12-28c0-12-4-21.9-12-29.9L554.9,497l135.7-135.7c8-8,12-18,12-27.9c0-12-4-22-12-29.9c-6-8-16-12-25.9-12c-12,0-21.9,4-29.9,12L499,441.1L363.3,303.4c-8-8-18-12-29.9-12c-10,0-20,4-28,12C297.4,311.4,293.4,321.4,293.4,331.3z&quot;\/&gt;&lt;\/g&gt;&lt;\/svg&gt;&lt;\/span&gt;\r\n\t\t\t\t\t\t&lt;p&gt;The Spirovent RV2 liberates micro bubbles from the heating systems water, this reduces oxygen and therefore will improve water quality, installing this is blogged &lt;a href=&quot;https:\/\/www.chatteris.biz\/blog\/spirovent-rv2-installation\/&quot;&gt;HERE&lt;\/a&gt;.&lt;\/p&gt;\n\t\t\t\t\t&lt;\/div&gt;\r\n\t\t\t \t\t \t\t \">\r\n\t\t \t\t\t\t\t \t\t\t\t\t \t\t\t<div class=\"pins_animation ihotspot_pulse\" style=\"top:-20px;left:-20px;height:40px;width:40px\"><\/div>\r\n\t\t\t \t\t\t\t\t \t\t<img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/orange-question-mark.png\" class=\"pins_image ihotspot_hastooltop\" style=\"top:-20px;left:-20px\" alt=\"Spirovent RV2\">\r\n\t\t\t \t\t\t\t \t\t\t\t \t<\/div>\r\n\t\t <\/div>\r\n\t\t \t\t <div class=\"drag_element tips \" style=\"top:95.44%;left:12.85%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path d=&quot;M153.7,153.7C57.9,249.5,10,365.3,10,499c0,135.7,47.9,251.5,143.7,347.3l0,0C249.5,942.1,363.3,990,499,990c135.7,0,251.5-47.9,347.3-143.7C942.1,750.5,990,634.7,990,499c0-135.7-47.9-249.5-143.7-345.3l0,0C750.5,57.9,634.7,10,499,10C365.3,10,249.5,57.9,153.7,153.7z M209.6,211.6l2-2C289.4,129.7,387.2,89.8,499,89.8c113.8,0,209.6,39.9,291.4,121.8c79.8,77.8,119.8,175.6,119.8,287.4c0,113.8-39.9,209.6-119.8,291.4C708.6,870.3,612.8,910.2,499,910.2c-111.8,0-209.6-39.9-287.4-119.8C129.8,708.6,89.8,612.8,89.8,499C89.8,387.2,129.8,289.4,209.6,211.6z&quot;\/&gt;&lt;path d=&quot;M293.4,331.3c0,12,4,22,12,29.9L443.1,497L305.4,632.7c-8,8-12,18-12,29.9c0,10,4,18,12,26c8,8,18,12,28,12c12,0,20-4,27.9-10L499,552.9l135.7,137.7c8,6,16,10,28,10c12,0,21.9-4,27.9-10c8-8,12-18,12-28c0-12-4-21.9-12-29.9L554.9,497l135.7-135.7c8-8,12-18,12-27.9c0-12-4-22-12-29.9c-6-8-16-12-25.9-12c-12,0-21.9,4-29.9,12L499,441.1L363.3,303.4c-8-8-18-12-29.9-12c-10,0-20,4-28,12C297.4,311.4,293.4,321.4,293.4,331.3z&quot;\/&gt;&lt;\/g&gt;&lt;\/svg&gt;&lt;\/span&gt;\r\n\t\t\t\t\t\t&lt;p&gt;Opentherm Gateway interfaced with Home Assistant, details of this project can be found &lt;a href=&quot;https:\/\/www.chatteris.biz\/blog\/ideal-vogue-max-opentherm-control-via-home-assistant\/&quot;&gt;HERE&lt;\/a&gt;.&lt;\/p&gt;\n\t\t\t\t\t&lt;\/div&gt;\r\n\t\t\t \t\t \t\t \">\r\n\t\t \t\t\t\t\t \t\t\t\t\t \t\t\t<div class=\"pins_animation ihotspot_pulse\" style=\"top:-20px;left:-20px;height:40px;width:40px\"><\/div>\r\n\t\t\t \t\t\t\t\t \t\t<img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/orange-question-mark.png\" class=\"pins_image ihotspot_hastooltop\" style=\"top:-20px;left:-20px\" alt=\"Opentherm Gateway\">\r\n\t\t\t \t\t\t\t \t\t\t\t \t<\/div>\r\n\t\t <\/div>\r\n\t\t \t\t <div class=\"drag_element tips \" style=\"top:64.45%;left:60.94%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path d=&quot;M153.7,153.7C57.9,249.5,10,365.3,10,499c0,135.7,47.9,251.5,143.7,347.3l0,0C249.5,942.1,363.3,990,499,990c135.7,0,251.5-47.9,347.3-143.7C942.1,750.5,990,634.7,990,499c0-135.7-47.9-249.5-143.7-345.3l0,0C750.5,57.9,634.7,10,499,10C365.3,10,249.5,57.9,153.7,153.7z M209.6,211.6l2-2C289.4,129.7,387.2,89.8,499,89.8c113.8,0,209.6,39.9,291.4,121.8c79.8,77.8,119.8,175.6,119.8,287.4c0,113.8-39.9,209.6-119.8,291.4C708.6,870.3,612.8,910.2,499,910.2c-111.8,0-209.6-39.9-287.4-119.8C129.8,708.6,89.8,612.8,89.8,499C89.8,387.2,129.8,289.4,209.6,211.6z&quot;\/&gt;&lt;path d=&quot;M293.4,331.3c0,12,4,22,12,29.9L443.1,497L305.4,632.7c-8,8-12,18-12,29.9c0,10,4,18,12,26c8,8,18,12,28,12c12,0,20-4,27.9-10L499,552.9l135.7,137.7c8,6,16,10,28,10c12,0,21.9-4,27.9-10c8-8,12-18,12-28c0-12-4-21.9-12-29.9L554.9,497l135.7-135.7c8-8,12-18,12-27.9c0-12-4-22-12-29.9c-6-8-16-12-25.9-12c-12,0-21.9,4-29.9,12L499,441.1L363.3,303.4c-8-8-18-12-29.9-12c-10,0-20,4-28,12C297.4,311.4,293.4,321.4,293.4,331.3z&quot;\/&gt;&lt;\/g&gt;&lt;\/svg&gt;&lt;\/span&gt;\r\n\t\t\t\t\t\t&lt;p&gt;I added a Pressure Reducing Valve\u00a0 (PRV) set to 1.5 bar on the filling loop, this avoids any over pressurization issues when I&#8217;m topping the system up or refilling and venting the system.&lt;\/p&gt;\n\t\t\t\t\t&lt;\/div&gt;\r\n\t\t\t \t\t \t\t \">\r\n\t\t \t\t\t\t\t \t\t\t\t\t \t\t\t<div class=\"pins_animation ihotspot_pulse\" style=\"top:-20px;left:-20px;height:40px;width:40px\"><\/div>\r\n\t\t\t \t\t\t\t\t \t\t<img decoding=\"async\" src=\"https:\/\/www.chatteris.biz\/blog\/wp-content\/uploads\/2026\/01\/orange-question-mark.png\" class=\"pins_image ihotspot_hastooltop\" style=\"top:-20px;left:-20px\" alt=\"Filling Loop with PRV\">\r\n\t\t\t \t\t\t\t \t\t\t\t \t<\/div>\r\n\t\t <\/div>\r\n\t\t \t\t <div class=\"drag_element tips \" style=\"top:43.42%;left:87.24%;\" >\r\n\t\t \t<div class=\"point_style  ihotspot_tooltop_html\" data-placement=\"n\" data-html=\"\t\t \t\t\t                  &lt;div class=&quot;box_view_html&quot;&gt;\r\n\t\t\t\t\t&lt;span class=&quot;close_ihp&quot;&gt;\r\n\t\t\t\t\t\t&lt;svg version=&quot;1.1&quot; xmlns=&quot;http:\/\/www.w3.org\/2000\/svg&quot; xmlns:xlink=&quot;http:\/\/www.w3.org\/1999\/xlink&quot; x=&quot;0px&quot; y=&quot;0px&quot; viewBox=&quot;0 0 1000 1000&quot; enable-background=&quot;new 0 0 1000 1000&quot; xml:space=&quot;preserve&quot;&gt;&lt;g&gt;&lt;path 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