{"product_id":"hitachi-yutaki-cascade-controller-atw-ycc-03-for-new-yutaki-s-s-combi-yutaki-m-4-to-7-hp-and-hydrosplit-4-to-7-hp","title":"Hitachi Yutaki Cascade Controller ATW-YCC-03 (for new Yutaki S, S-Combi, Yutaki M 4 to 7 HP, and Hydrosplit 4 to 7 HP)","description":"\u003c!-- SEO Product Name: Hitachi Yutaki Cascade Controller ATW-YCC-01 (for Yutaki M 2 and 3 HP, and all S-80) --\u003e\n\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.6;\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eHitachi ATW-YCC-01 Cascade Controller\u003c\/strong\u003e enables multiple Hitachi heat pump units to operate together as a single coordinated system — typical in larger commercial installs, multi-property social housing schemes, or high-output domestic systems where a single heat pump cannot meet peak demand.\u003c\/p\u003e\n\u003cp\u003eThis variant is specifically matched to: Yutaki M 2 and 3 HP outdoor units, and the entire S-80 indoor range.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:22px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 28%;min-width:130px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.15;\"\u003eATW-YCC-01\u003c\/div\u003e\n\u003cdiv style=\"font-size:11px;text-transform:uppercase;letter-spacing:0.06em;margin-top:4px;opacity:0.95;\"\u003eModel Code\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 28%;min-width:130px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.15;\"\u003eMulti-Unit\u003c\/div\u003e\n\u003cdiv style=\"font-size:11px;text-transform:uppercase;letter-spacing:0.06em;margin-top:4px;opacity:0.95;\"\u003eConfiguration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 28%;min-width:130px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.15;\"\u003eHitachi\u003c\/div\u003e\n\u003cdiv style=\"font-size:11px;text-transform:uppercase;letter-spacing:0.06em;margin-top:4px;opacity:0.95;\"\u003eManufacturer\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 28%;min-width:130px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.15;\"\u003eCommercial\u003c\/div\u003e\n\u003cdiv style=\"font-size:11px;text-transform:uppercase;letter-spacing:0.06em;margin-top:4px;opacity:0.95;\"\u003eApplication Class\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f0faf8;border-left:4px solid #008377;padding:13px 18px;margin:18px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cstrong style=\"color:#008377CF;\"\u003eWhy cascade.\u003c\/strong\u003e Cascading multiple smaller heat pumps instead of a single very large one gives better part-load efficiency, redundancy (one unit can fail without losing the building), and modular sizing for phased projects.\u003c\/div\u003e\n\u003cdiv style=\"background:#fff7e6;border-left:4px solid #d18b00;padding:13px 18px;margin:18px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cstrong style=\"color:#9a6200;\"\u003eATW-YCC-01 is matched to a specific Hitachi range.\u003c\/strong\u003e This controller is specifically for Yutaki M 2 and 3 HP, and all S-80. The other Cascade Controller variant covers different Hitachi ranges — confirm your unit family before ordering.\u003c\/div\u003e\n\u003ch3 style=\"color:#008377;font-size:18px;margin-top:26px;margin-bottom:10px;border-bottom:1px solid #008377;padding-bottom:4px;\"\u003eCascade Controller Capabilities\u003c\/h3\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0;\"\u003e\n\u003cdiv style=\"border:1px solid #e0e0e0;border-radius:4px;padding:14px 16px;background:#fdfdfd;\"\u003e\n\u003cdiv style=\"border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;font-weight:700;color:#008377;font-size:15px;\"\u003eCoordinated multi-unit control\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003e\u003cp\u003eOne cascade controller manages up to multiple Hitachi heat pumps as a single virtual system, with automatic sequencing and load balancing.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e0e0e0;border-radius:4px;padding:14px 16px;background:#fdfdfd;\"\u003e\n\u003cdiv style=\"border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;font-weight:700;color:#008377;font-size:15px;\"\u003eRedundancy through modularity\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003e\u003cp\u003eIf one unit faults, the remaining units continue running. The system degrades gracefully rather than failing entirely.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e0e0e0;border-radius:4px;padding:14px 16px;background:#fdfdfd;\"\u003e\n\u003cdiv style=\"border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;font-weight:700;color:#008377;font-size:15px;\"\u003ePart-load efficiency\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003e\u003cp\u003eAt low loads only one unit operates — keeping COP high. As demand rises, additional units stage in. The total system runs efficiently across the full output range.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"border:1px solid #e0e0e0;border-radius:4px;padding:14px 16px;background:#fdfdfd;\"\u003e\n\u003cdiv style=\"border-bottom:2px solid #008377;padding-bottom:6px;margin-bottom:10px;font-weight:700;color:#008377;font-size:15px;\"\u003eCommercial \u0026amp; multi-property fit\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003e\u003cp\u003eDesigned for installs above typical single-domestic scale — apartment blocks, social housing schemes, light-commercial buildings, MMC factory builds.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377;font-size:18px;margin-top:26px;margin-bottom:10px;border-bottom:1px solid #008377;padding-bottom:4px;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cdiv style=\"margin:22px 0;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14.5px;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\" style=\"background:#008377CF;color:#fff;text-align:left;padding:10px 14px;font-size:15px;\"\u003eTechnical Specifications\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background:#f8fcfb;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;font-weight:600;width:40%;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;\"\u003eHitachi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;font-weight:600;width:40%;\"\u003eModel Code\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;\"\u003eATW-YCC-01\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f8fcfb;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;font-weight:600;width:40%;\"\u003eType\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;\"\u003eCascade controller for multi-unit Hitachi heat pump systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#ffffff;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;font-weight:600;width:40%;\"\u003eCompatible With\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;\"\u003eYutaki M 2 and 3 HP outdoor units, and the entire S-80 indoor range\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#f8fcfb;\"\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;font-weight:600;width:40%;\"\u003eTypical Application\u003c\/td\u003e\n\u003ctd style=\"padding:9px 12px;border:1px solid #e8e8e8;\"\u003eLight commercial, social housing, large domestic installations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"margin:24px 0;\"\u003e\n\u003cdiv style=\"background:#008377CF;color:#fff;padding:11px 16px;font-weight:700;font-size:17px;border-radius:4px 4px 0 0;\"\u003eFrequently Asked Questions\u003c\/div\u003e\n\u003cdetails style=\"border:1px solid #e0e0e0;border-top:none;padding:0 16px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#008377;padding:11px 0;font-size:14.5px;\"\u003eIs Hitachi Yutaki MCS-certified for the BUS grant?\u003c\/summary\u003e\u003cdiv style=\"padding:0 0 14px 0;font-size:14.5px;\"\u003e\u003cp\u003eYes — Hitachi Yutaki M is MCS-listed when installed by a certified MCS installer, qualifying the homeowner for the £7,500 Boiler Upgrade Scheme grant (subject to property eligibility).\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-top:none;padding:0 16px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#008377;padding:11px 0;font-size:14.5px;\"\u003eDo I need a Hitachi-trained installer?\u003c\/summary\u003e\u003cdiv style=\"padding:0 0 14px 0;font-size:14.5px;\"\u003e\u003cp\u003eFor warranty registration Hitachi requires the install and commissioning to be carried out by a Hitachi-approved engineer. Quality Heating can put you in touch with Hitachi-trained installers across the UK.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-top:none;padding:0 16px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#008377;padding:11px 0;font-size:14.5px;\"\u003eIs the controller included with the Yutaki M outdoor unit?\u003c\/summary\u003e\u003cdiv style=\"padding:0 0 14px 0;font-size:14.5px;\"\u003e\u003cp\u003eNo — the Hitachi Unit Main Controller (PC-ARFH1E or PC-ARFH2E depending on kW) is a separate purchase. See our matching controller listings.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-top:none;padding:0 16px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#008377;padding:11px 0;font-size:14.5px;\"\u003eCan the Yutaki M run with my existing radiators?\u003c\/summary\u003e\u003cdiv style=\"padding:0 0 14px 0;font-size:14.5px;\"\u003e\u003cp\u003eIn most cases yes, but radiators sized for an 80°C gas boiler may need uprating because heat pumps run at lower flow temperatures (typically 45–55°C on R32). A heat loss survey identifies which rooms (if any) need radiator upgrades.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e0e0e0;border-top:none;padding:0 16px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;color:#008377;padding:11px 0;font-size:14.5px;\"\u003eDoes the Yutaki M work with the Hitachi WiFi Gateway?\u003c\/summary\u003e\u003cdiv style=\"padding:0 0 14px 0;font-size:14.5px;\"\u003e\u003cp\u003eYes — pair with the ATW-IOW-01 WiFi IoT Gateway (sold separately) for remote control, monitoring and integration with the Hitachi CSNET Home app.\u003c\/p\u003e\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Hitachi","offers":[{"title":"Default Title","offer_id":65254514393437,"sku":"ATW-YCC-03","price":490.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/HitachiYutakiCascadeController.png?v=1784046342","url":"https:\/\/qualityheating.co.uk\/products\/hitachi-yutaki-cascade-controller-atw-ycc-03-for-new-yutaki-s-s-combi-yutaki-m-4-to-7-hp-and-hydrosplit-4-to-7-hp","provider":"AIZO Quality Heating","version":"1.0","type":"link"}