Toyotomi FB-38N(FS) - Manual (Page 26)

7
REMOVING AIR TRAP
When operating for the first time or when refueling an empty Tank, air may be trapped in the
Fuel Pipe, making ignition difficult. In this situation, follow the procedure below:
1. Turn the unit off by pressing “POWER SWITCH”.
Disconnect the power supply cord.
2. Release the two (2) Screws from the Front Panel and
remove the Front Panel.
3. To catch the fuel which will drain out, put a small
container under the Fuel Strainer.
4.
Loosen the Screw on top of the Fuel Strainer.
Immediately wipe off any spilled fuel.
5. Remove the trapped air thoroughly. Failure to remove all
the air will cause improper ignition and may extinguish the
unit during operation.
6. Tighten the Screw after removing trapped air.
7. Reconnect the Power Supply Cord. Turn the unit on by pressing “POWER SWITCH”.
NOTE: In the event of an ignition failure, turn the unit off by pressing “POWER SWITCH” and
after 5 seconds press “POWER SWITCH” to turn it on once again.
PLUMBING
The unit should be equipped with floor heating panels or radiator (convector).
NOTE: Select a place where the Heating Piping for the Water Heater and radiator can be
shortened as much as possible.
NOTE: Make sure the piping for the radiator is laid-out properly, and also check for leakage
with a pressure test.
NOTE: Circulation Pump capacity should be selected in accordance with the water head loss
caused by the required maximum flow and the longest piping.
CLOSED CIRCUIT PIPING EXAMPLE
Expansion
Tank
Air Release Valve
Union
Circulation
Pump
Tee
Pressure
Relief valve
Air Release
Valve
Differential
Pressure Valve
Header
Header Valve
Hot Water
(Outlet)
Bypass
Header Valve
Hot Water
(Inlet)
Air Separator
Valve
Header
Drain
Valve
Water
Supply
Valve