Baymak Boiler Water Pressure Refill: Step-by-Step Guide
Independent guide — no official affiliation with com.tr.
Short answer
When a Baymak boiler's pressure drops below 1 bar the display may show a lockout and the device can stop. Refill with the filling loop under the boiler to 1.2–1.8 bar: open the loop slowly, watch the display, close it firmly at the target value and reset if needed. Constant drops point to a leak or expansion vessel fault.
Official page
baymak.com.tr
01 — Step-by-step fix
Step-by-step fix
ADIM 01
Run the safety checks
Make sure the area under the boiler is dry; if you see standing water, find the leak first. Check that radiator valves are open.
ADIM 02
Locate the filling loop
On Baymak models the filling loop is a grey/black plastic or brass tap under the boiler; on some models you turn a lever to 'open'. Your manual's diagram shows which valve is the loop.
Don't confuse the loop with the gas valve: the gas valve has a yellow lever and pipes toward the gas line. If unsure, check the manual before turning anything.
ADIM 03
Slowly raise pressure to 1.2–1.8 bar
Open the loop slowly while watching the display. Close it around 1.5 bar. Never exceed 2.5 bar; overpressure vents water through the safety valve.
ADIM 04
Close the loop firmly and reset
Turn the loop fully closed. If the display shows a lockout, press reset or power-cycle the breaker for 30 seconds.
ADIM 05
Watch the pressure over the next days
After a correct refill the pressure should stay stable for weeks. If it drops in 2–3 days, bleed radiators again and retry. Continued drops mean a leak in the system.
02 — Frequently asked questions
Frequently asked questions
What is the ideal pressure on a Baymak boiler?
1.2–1.8 bar cold. Rising to 2–2.2 bar while running is normal; near 3 bar suggests an expansion vessel issue.
I filled it but the pressure still reads low
Confirm the loop is fully closed and you turned the right valve. The display may lag — read again after a reset. If it's still low or keeps dropping, there's a leak.
The pressure is too high — what now?
Drain a little water from any radiator bleed valve to bring it to 1.5–1.8 bar. If it climbs to 3 bar repeatedly and the safety valve opens, have the expansion vessel checked.
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