{"product_id":"panasonic-aquarea-options-board-additional-functions-pcb","title":"Panasonic Aquarea Options Board — Additional Functions PCB","description":"\u003c!-- SEO Product Name: Panasonic Aquarea Options Board — Additional Functions PCB (CZ-NS4P) --\u003e\n\u003cdiv style=\"font-size:16px;font-family:Arial,Helvetica,sans-serif;color:#222;max-width:900px;margin:0 auto;line-height:1.55;\"\u003e\n\u003cp style=\"margin:0 0 14px 0;\"\u003eThe \u003cstrong\u003ePanasonic CZ-NS4P\u003c\/strong\u003e is the Optional PCB that unlocks a range of advanced system functions on Aquarea heat pumps — from two-zone heating control to pool heating, buffer tank management, solar integration and Smart Grid readiness. It fits directly onto the indoor unit's main control board, extending what a standard installation can do without needing a separate control cabinet.\u003c\/p\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:8px;margin:18px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:120px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:6px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.1;\"\u003e2-Zone Control\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;opacity:0.95;letter-spacing:0.3px;text-transform:uppercase;\"\u003eKey function\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:120px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:6px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.1;\"\u003eSG Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;opacity:0.95;letter-spacing:0.3px;text-transform:uppercase;\"\u003eSmart Grid\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:120px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:6px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.1;\"\u003eSolar + Buffer\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;opacity:0.95;letter-spacing:0.3px;text-transform:uppercase;\"\u003eIntegration\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:120px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:6px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.1;\"\u003ePool Heating\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;opacity:0.95;letter-spacing:0.3px;text-transform:uppercase;\"\u003eSupported\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:120px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:6px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.1;\"\u003eDemand Control\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;opacity:0.95;letter-spacing:0.3px;text-transform:uppercase;\"\u003eSupported\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 140px;min-width:120px;background:#008377CF;color:#fff;padding:14px 10px;text-align:center;border-radius:6px;\"\u003e\n\u003cdiv style=\"font-size:22px;font-weight:700;line-height:1.1;\"\u003eFits Main PCB\u003c\/div\u003e\n\u003cdiv style=\"font-size:12px;margin-top:4px;opacity:0.95;letter-spacing:0.3px;text-transform:uppercase;\"\u003eInstallation\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#E6F3F1;border-left:4px solid #008377;padding:14px 16px;margin:16px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377;margin-bottom:4px;\"\u003eOne board, multiple advanced functions\u003c\/div\u003e\n\u003cdiv\u003eThe CZ-NS4P is a single accessory unlocking several enhanced functions at once — you don't need separate boards for two-zone control, buffer tank management and Smart Grid readiness.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#FFF6E0;border-left:4px solid #C89200;padding:14px 16px;margin:16px 0;border-radius:0 4px 4px 0;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#C89200;margin-bottom:4px;\"\u003eDisables some standard inputs when fitted\u003c\/div\u003e\n\u003cdiv\u003eOnce the CZ-NS4P is installed, the main PCB's \u003cstrong\u003ebuilt-in room sensor 1 input and extra pump control contacts are disabled\u003c\/strong\u003e — those functions are handled through the Optional PCB instead. Factor this into your system wiring design.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377;font-size:18px;margin:24px 0 10px 0;padding-bottom:6px;border-bottom:2px solid #008377CF;\"\u003eFunctions enabled\u003c\/h3\u003e\n\u003cdiv style=\"display:flex;flex-wrap:wrap;gap:10px;margin:14px 0;\"\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#fff;border:1px solid #E5E7EB;border-top:3px solid #008377CF;padding:14px 16px;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377;margin-bottom:6px;\"\u003eTwo-zone control\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003eManage two independent heating zones — for example underfloor heating and radiators — each with its own water sensor, room sensor and pump control.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#fff;border:1px solid #E5E7EB;border-top:3px solid #008377CF;padding:14px 16px;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377;margin-bottom:6px;\"\u003eBuffer tank control\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003eAdds buffer tank temperature monitoring and control logic, supporting hydraulic buffer configurations on more complex system designs.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#fff;border:1px solid #E5E7EB;border-top:3px solid #008377CF;padding:14px 16px;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377;margin-bottom:6px;\"\u003eSolar integration\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003eConnects a solar thermal sensor and pump, allowing the Aquarea system to work alongside a solar hot water contribution.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#fff;border:1px solid #E5E7EB;border-top:3px solid #008377CF;padding:14px 16px;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377;margin-bottom:6px;\"\u003ePool heating control\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003eAdds a dedicated pool water pump and sensor connection, letting the heat pump contribute to swimming pool heating alongside space heating and DHW.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#fff;border:1px solid #E5E7EB;border-top:3px solid #008377CF;padding:14px 16px;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377;margin-bottom:6px;\"\u003eDemand control \u0026amp; SG Ready\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003eSupports an external 0–10V demand signal and Smart Grid (SG Ready) inputs — the system can respond to external load or tariff signals, including boosting setpoints when on-site PV generation is available.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 260px;min-width:240px;background:#fff;border:1px solid #E5E7EB;border-top:3px solid #008377CF;padding:14px 16px;border-radius:4px;\"\u003e\n\u003cdiv style=\"font-weight:700;color:#008377;margin-bottom:6px;\"\u003eExternal switching and error signalling\u003c\/div\u003e\n\u003cdiv style=\"font-size:14.5px;\"\u003eAdds external error signal output, an external compressor stop switch, and an external heat\/cool switch-over input — useful for BMS or bespoke control integration.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"color:#008377;font-size:18px;margin:24px 0 10px 0;padding-bottom:6px;border-bottom:2px solid #008377CF;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\u003ctable style=\"border-collapse:collapse;width:100%;font-size:14.5px;margin:8px 0;\"\u003e\n\u003ctr style=\"background:#F7FAFA;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eModel code\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003eCZ-NS4P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eFunction\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003eOptional PCB for advanced Aquarea system functions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FAFA;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eFitting\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003eConnects to the Main PCB inside the indoor unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eFunctions enabled\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003e2-zone control, pool heating, buffer tank control, solar control, external error signal output, demand control, SG Ready, external compressor stop, external heat\/cool switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FAFA;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eSensor inputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003eRoom sensor(s), buffer tank sensor, pool sensor, water sensor(s) zone 1\/2, solar sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eMaximum cable length — sensor inputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003e30 metres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FAFA;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eMaximum cable length — outputs and other inputs\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003e50 metres\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#FFFFFF;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eEffect on Main PCB\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003eRoom sensor 1 input and extra pump control contacts on Main PCB are disabled once fitted\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#F7FAFA;\"\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;font-weight:600;width:42%;\"\u003eCompatibility\u003c\/td\u003e\n\u003ctd style=\"padding:8px 12px;border:1px solid #E5E7EB;\"\u003ePanasonic Aquarea H Generation (and compatible platforms specifying CZ-NS4P)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch3 style=\"color:#008377;font-size:18px;margin:24px 0 10px 0;padding-bottom:6px;border-bottom:2px solid #008377CF;\"\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul style=\"padding-left:22px;margin:8px 0;\"\u003e\n\u003cli style=\"margin-bottom:5px;\"\u003e1 × Panasonic CZ-NS4P Optional PCB\u003c\/li\u003e\n\u003cli style=\"margin-bottom:5px;\"\u003eMounting holders and spacers\u003c\/li\u003e\n\u003cli style=\"margin-bottom:5px;\"\u003eManufacturer installation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color:#008377;font-size:18px;margin:24px 0 10px 0;padding-bottom:6px;border-bottom:2px solid #008377CF;\"\u003eRelated sensors typically used with this board (sold separately)\u003c\/h3\u003e\n\u003cul style=\"padding-left:22px;margin:8px 0;\"\u003e\n\u003cli style=\"margin-bottom:5px;\"\u003ePAW-A2W-TSHC — zone water sensor (one per zone)\u003c\/li\u003e\n\u003cli style=\"margin-bottom:5px;\"\u003ePAW-A2W-TSBU — buffer tank sensor\u003c\/li\u003e\n\u003cli style=\"margin-bottom:5px;\"\u003ePAW-A2W-TSSO — solar sensor\u003c\/li\u003e\n\u003cli style=\"margin-bottom:5px;\"\u003ePAW-A2W-TSRT — zone room sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"color:#008377;font-size:18px;margin:24px 0 10px 0;padding-bottom:6px;border-bottom:2px solid #008377CF;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails style=\"border:1px solid #E5E7EB;border-radius:4px;margin:8px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;background:#008377CF;color:#fff;padding:10px 14px;font-weight:600;list-style:none;\"\u003eDo I need this board for a standard single-zone install?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;background:#FFFFFF;\"\u003eNo — a straightforward single-zone system with a standard DHW cylinder doesn't need the CZ-NS4P. It's specifically for installations needing \u003cstrong\u003eenhanced functions\u003c\/strong\u003e such as two-zone control, pool heating, solar integration, or Smart Grid readiness.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #E5E7EB;border-radius:4px;margin:8px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;background:#008377CF;color:#fff;padding:10px 14px;font-weight:600;list-style:none;\"\u003eWhat sensors do I need alongside this board?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;background:#FFFFFF;\"\u003eIt depends which functions you're enabling. For two-zone control, you'll typically need \u003cstrong\u003ePAW-A2W-TSHC\u003c\/strong\u003e zone water sensors (one per zone). For buffer tank or solar integration, you'll need the corresponding \u003cstrong\u003ePAW-A2W-TSBU\u003c\/strong\u003e or \u003cstrong\u003ePAW-A2W-TSSO\u003c\/strong\u003e sensors.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #E5E7EB;border-radius:4px;margin:8px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;background:#008377CF;color:#fff;padding:10px 14px;font-weight:600;list-style:none;\"\u003eDoes fitting this board disable anything on the standard system?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;background:#FFFFFF;\"\u003eYes — once installed, the Main PCB's \u003cstrong\u003eroom sensor 1 input and extra pump control contacts are disabled\u003c\/strong\u003e, since those functions move to the Optional PCB. Your installer should account for this in the wiring design.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #E5E7EB;border-radius:4px;margin:8px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;background:#008377CF;color:#fff;padding:10px 14px;font-weight:600;list-style:none;\"\u003eIs this compatible with my Aquarea generation?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;background:#FFFFFF;\"\u003eThe CZ-NS4P is specified for \u003cstrong\u003eH Generation\u003c\/strong\u003e Aquarea systems. Confirm compatibility with your specific model — send us your outdoor or indoor unit code and we'll verify before you order.\u003c\/div\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #E5E7EB;border-radius:4px;margin:8px 0;overflow:hidden;\"\u003e\u003csummary style=\"cursor:pointer;background:#008377CF;color:#fff;padding:10px 14px;font-weight:600;list-style:none;\"\u003eCan this be used for Smart Grid \/ SG Ready integration?\u003c\/summary\u003e\u003cdiv style=\"padding:12px 16px;background:#FFFFFF;\"\u003eYes — the board supports \u003cstrong\u003eSG Ready signal inputs\u003c\/strong\u003e, allowing the system to increase heating or DHW setpoints in response to available on-site solar PV generation or favourable grid signals.\u003c\/div\u003e\u003c\/details\u003e\n\u003c\/div\u003e","brand":"Panasonic","offers":[{"title":"Default Title","offer_id":65714925437277,"sku":"CZ-NS4P","price":215.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/PanasonicOptionsBoardCZ-NS4P.jpg?v=1787853123","url":"https:\/\/qualityheating.co.uk\/products\/panasonic-aquarea-options-board-additional-functions-pcb","provider":"AIZO Quality Heating","version":"1.0","type":"link"}