L.B. White 400 Tradesman Portable Forced Air - Manual (Page 10)

1. Thread rigid end of hose into gas inlet of heater.
Tighten securely. See Fig.2.
FIG. 2
2. Thread hose adapter to regulator outlet and tighten
securely. Connect end of hose with nut to hose
adapter. Tighten hose nut securely. See Fig 3.
FIG. 3
HOSE AND REGULATOR ASSEMBLY
9
1. At the inlet of the regulator is a male nut and stem
called a POL. Remove the cap from the POL but do
not discard it. Insert POL stem into the valve on the
tank. Thread the nut counterclockwise into the tank
valve. Tighten the nut securely with a wrench. See
Fig. 4.
2. Slowly open the tank valve. This will prevent lock-up
of the excess flow valve within POL stem.
3. Check all connections with approved leak detector.
Do not use flame to check for leaks. A fire or
explosion may result.
4. When storing or transporting the heater, ensure the
cap is pushed back onto the POL fitting to protect the
fitting from damage and prevent entry of dirt.
FIG. 4
CONNECTING PROPANE REGULATOR TO PROPANE GAS TANK
POL NUT
AND STEM