The PA-KIT E (NG) is the genuine Rinnai gas control assembly for the A Series Infinity, specific to Natural Gas installations. It bundles the main solenoid valve, the changeover solenoid valves, and the modulating valve into a single assembly. The main solenoid stays open as long as there's flow through the unit, while the modulating valve and changeover solenoids manage the gas flow rate to keep water temperature stable regardless of demand or flow rate. The valve is electronically controlled and factory set, so no adjustment is normally needed during installation — unless the unit isn't performing correctly and every other cause has been ruled out.
After fitting this assembly, gas pressure needs verifying and setting at the burner test point, following Rinnai's commissioning procedure across both high and low combustion modes.
This assembly is strictly for Natural Gas installations. Fitting it to an LPG system will result in incorrect combustion and safety issues, so confirm the gas type before ordering.
⚠ Important: This is gas-carrying, safety-critical equipment. Installation and any related maintenance must only be carried out by a Gas Safe registered engineer.
If your A Series unit is throwing fault code 52 or 71 after wiring has already been ruled out, or you're seeing ignition, combustion, or temperature stability problems that don't trace back to anywhere else, this assembly is very likely the fix. It replaces the main solenoid, changeover solenoids, and modulating valve as one unit, so you're restoring precise gas control across the whole system rather than patching one component and hoping the rest holds.
Order the Rinnai PA-KIT E (NG) A Series Gas Control Assembly online today.
| Manufacturer | Rinnai |
|---|---|
| Part Number | PA-KIT E (NG) |
| Product Type | Gas Control Assembly |
| Gas Type | Natural Gas (NG) – Not Suitable for LPG |
| Compatible Range | Rinnai Infinity A Series Continuous Flow Water Heaters |
| Assembly Contents | Main Solenoid Valve, Changeover Solenoid Valves, Electronically Controlled Modulating Valve |
| Control | Electronically Controlled by PCB via Sensor Inputs |
| Function | Controls All Gas Delivery to the Burner for Temperature-Accurate Continuous Flow Operation |
| Post-Installation Requirement | Gas Pressure Verification and Setting Required Following Replacement |
| Installation | Gas Safe Registered Engineer Required |
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