Installation Guide
15
Saf-T Vent CI Plus Universal Boiler Adapter:
The Saf-T Vent CI Plus Universal Boiler Adapter can be used horizontally or vertically to adapt Saf-T Vent
CI Plus to nominal diameter flue collars. It can also adapt to flue collars that are slightly out of round.
1. Remove the clamps and coupler band from the adapter, figure 1. The adapter must clamp onto the
flue collar with no less than 1 inch overlap for proper fit. Mark or scribe flue collar prior to fitting the
adapter, figure 2.
2. All joint surfaces must be cleaned with alcohol wipes before applying sealant. Apply 1/4" thick bead
of RTV sealant around the outside of flue collar approximately 3/4" from the edge, figure 2. Place the
adapter over boiler collar lining up the edge of the adapter to the scribe marks, then tighten the hose
clamp snugly, figure 3. On horizontal flue collars, the split side of the boiler adapter should be installed
along the top of the flue collar.
Figure 1 Figure 2 Figure 3
Flue Collar
Flue Adapter
Hose Clamp
Joint Strap
Hose Clamp
Boiler Adapter
Coupler Band
3. Apply a 1/4" bead of RTV sealant to the inside of the female end of the boiler adapter, 3/4" from the
edge, figure 4. Make a continuous, straight- line bead, not a zig-zag pattern when applying the sealant.
4. Insert the male end of the first piece of Saf-T Vent CI Plus into the female end of the boiler adapter,
lining up the joint tabs, figure 5. Install the joint strap over the tabs of both parts, hand tighten the strap
with a 7/16" hollow nut driver. CAUTION: overtightening will distort the joint. Re-tighten the boiler
clamp around flue collar. If possible, reach into the vent and apply RTV sealant to all inside seams of
the boiler adapter and the first joint. Smooth the sealant with a moistened finger or flat tool, figure 5.
Figure 4
Figure 5
Figure 6
Joint Tabs
Joint Tabs
Coupler Band
Joint Strap
Hose Clamp
Saf-T Vent CI Plus
Boiler Adapter
RTV Inside Vent
5. Install the coupler band over the boiler adapter to finish
installation, figure 6.
RTV Sealant