Checking the supply pressure and burner pressure – A.O. Smith 120 through 250 Series User Manual
Page 36
Installation
36
Instruction manual BFC
3
is
3.11 Checking the supply
pressure and burner
pressure
Note
Before starting the appliance and/or checking the supply pressure and
burner pressure, you must fill
the appliance.
Attention
Before starting up for the first time or after conversion, you must always
check the supply pressure and burner pressure.
Note
The easiest way to check the gas pressures is by using two pressure
gauges. This procedure assumes that these two gauges are available.
Gas control
3.11.1
Preparation
To check the supply pressure and burner pressure, proceed as follows:
1. Isolate
(10.3 "Electrically isolating the appliance")
the water heater from the
power supply.
2. Undo the screws of the plastic covers.
3. Carefully remove the covers from the top of the appliance. The electrical
section is now visible.
Legend
Only applicable numbers are
mentioned.
1. supply pressure test nipple
2. burner pressure test nipple
3. burner pressure regulator
4. burner pressure control cap
5. burner pressure control
adjusting screw
1
2
3
5
4
IMD-0079a R2