helpful items
That control unit removal tool should be with the heater when it comes. Impossible to remove without breaking anything without the tool in this kit. Thank you for your recommendation!
Core Features & Benefits
Service kit for Hydronic HS3 heaters. Contains O-rings for coolant connections, O-rings for temperature sensors, Burner gasket with a seal. This kit comes with an ECU removal tool, which allows to remove the ECU cover easily, please be careful when removing an ECU without a tool to avoid breaking clips. Please note - it is recommended to replace gaskets every time heater parts are required to be airtight tempered.
O-rings - 221000700019 (x4)
O-Ring - 252481990107 (x2)
Burner and rod seals - 201952990105
Removal tool - 252652810000
That control unit removal tool should be with the heater when it comes. Impossible to remove without breaking anything without the tool in this kit. Thank you for your recommendation!