Install Instructions
10
Horizontal Twin Pipe (Fig.11)
1.  Locate penetration.
2.  Cut and frame hole. (Table 3)
3.  Attach Interior Wall Plate to interior wall.
4.  Attach and seal Exterior Wall Plate to 
exterior wall.
5.  Slide pipes through outer plate.
6.  Rotate pipes to slide pipe past keyway.
7.  Slide Exhaust Tip into exhaust pipe.
8.  Mount Outer Cover Plate to exterior wall 
plate.
9.  Install Poly Pro venting system from 
appliance to termination.
Lochinvar / IPEX twin plate termination 
connector- 2" installation (Fig.12)
1.  Slide PolyPro pipe w/ PVC adapter into 
oblong hole and down. Brackets will 
point away from the wall on the exterior 
of the house and rest between the two 
outward beads.
2.  Install the termination assembly 
in accordance with appliance 
manufacturer’s instructions.
3.  Verify exhaust pipe cannot be removed 
from termination cap.
Lochinvar / IPEX twin plate termination 
connector- 3" & 4" installation (Fig.13)
1.  Slide PolyPro Pipe w/ PVC adapter into 
small hole of retaining plate until it stops 
on the adapter collar.
Figure 11
POSITIONED 
HORIZONTALLY
POSITIONED 
VERTICALLY
AIR INLET PIPE
OUTER COVER PLATE
APPLY BEAD OF SILICON SEALANT 
AROUND FEMALE END OF PIPE TO
SEAL AGAINST EXTERIOR WALL PLATE
INTERIOR 
WALL PLATE
EXTERIOR WALL PLATE
EXHAUST TIP
EXHAUST PIPE
Figure 12
BRACKET
POLYPRO PIPE 
W/PVC ADAPTER 
SUPPLIED WITH 
TERMINATION KIT
2.  Finish installing the termination 
assembly in accordance with appliance 
manufacturer’s instructions. PolyPro pipe 
is to be installed on the exhaust outlet.
3.  Once securely installed to exterior, verify 
exhaust pipe cannot be removed from 
termination cap.
Figure 13
POLYPRO PIPE 
W/PVC ADAPTER 
SUPPLIED WITH 
TERMINATION KIT










