Fontana Gun Metal Gray 2-Function Thermostatic Mixer FAQ
38°C Calibration, Dual-Outlet Isolation & Concealed Valve Commissioning
This gun metal gray concealed shower mixer integrates automatic thermostatic regulation,
two independently controlled outlets, and a solid brass valve body for stable mixed-water delivery.
How should the thermostatic cartridge be calibrated after installation?
Operate the selected outlet until the mixed-water temperature stabilizes, verify the discharge with a calibrated thermometer, and realign the control handle so the 38°C reference matches the measured output.
How should the two concealed outlet branches be commissioned?
Activate each outlet independently, confirm correct branch routing and stable flow, and verify that the inactive outlet remains hydraulically isolated without pressure migration or concealed cross-flow.
What supply preparation is required before operating the valve?
Flush the hot and cold lines independently, confirm hot-left and cold-right inlet orientation, remove construction debris, and establish balanced supply pressure before commissioning the thermostatic assembly.
Which concealed components require testing before wall closure?
Pressure-test the inlet unions, brass valve body, thermostatic cartridge chamber, two outlet-control valves, threaded seals, and both concealed outlet branches while every connection remains accessible.
