
Coil Tube Boiler Operator's Manual: Models CB-200-CTB, CB-350-CTB, and CB-500-CTB
4-14
Installing the Suction Oil Line Components (continued)
(2.)
Install the suction oil line
(continued))
:
m. Slide the 1/2" flare nut over the end of the 1/2" copper tubing, and flare the end of the tubing.
NOTE:
Use a high-quality flaring tool (such as a Ridgid Flaring Tool) to ensure that all
flares are made properly (i.e. so they will be 100% airtight).
n. Install the flared oil line and nut onto the assembled check valve/screen and tighten.
o. Pick up the assembled oil line, and carefully guide the end of the tubing with the check valve
through the 2" tank opening.
p. Apply Permatex #2 non-hardening gasket sealer (or equivalent) to the threads of the 2"
duplex slip-thru tank bushing, and tighten this fitting into the tank.
q. Pull the 1/2" copper tubing back up through the slip fitting until you see the mark that you put
on the tubing earlier. Holding the tubing with one hand, push the ferrel sleeve connector and
locking nut down the tubing, then tighten onto the 1/2" slip fitting. The oil line is now
installed in the correct position off of the bottom of the tank.
r. Carefully bend the oil line up to the canister filter; use a spring bender over the oil line while
bending the tubing to prevent kinks in the oil line. Allowing for the flare nut, cut off the
excess tubing.
s. Install the 1/2" flare nut onto the tubing, and flare the end of the tubing.
t. Install the end of the tubing with the flare nut onto the 1/2" flare adapter (on the ball valve
assembly at the canister filter).
u. Install a vent from the tank to the outside of the building according to code. The tank must
be properly vented to allow air to enter the tank as oil is pumped out and to safely vent fumes
to the outside. See Figures 4A, 4B, and 4D.
v. Install plugs in all other tank openings as required by code.
w. Inspect the installation. For proper suction oil line operation, make sure all components are
installed and positioned as specified in this manual.
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