Regency P121LC User Manual

Regency

®

 P121-2/P121LC-2/P121RC-2/P131-2 Zero Clearance Direct Vent Gas Fireplace

5)  Slip the assembled liner and termination 

assembly through the thimble making sure 
the termination cap faces up (there are 
markings on the cap that show which way 
is up). This will position the termination cap 
with proper down slope for draining water. 
Fasten the cap to the outer wall with the 4 
supplied screws. 

6)  Pull the centre 4"(100mm) liner and outer 
 

6-7/8"(175mm) liner out enough to slip over 
the fl ue collars of the fi replace.  (You may 
wish to cut the liner shorter to make it more 
workable.) Do not bend liner more than 
45

o

.

7)  Apply Mill Pac over the fi replace inner collar 

and slip the 4"(100mm) liner down over it 
and attach with 3 supplied screws.

8)  Do the same with the 6-7/8"(175mm) liner.

9)  Apply a bead of silicone between the thimble 

and termination and around the outer edge 
of the terminal at the wall in order to keep 
the water out.

2) Level 

the 

fi replace and fasten it to the framing 

using nails or screws through the nailing 
strips.

3)  Assemble the vent assembly by applying 

Mill Pac to the 4"(100mm) inner collar of the 
termination and  slipping the 4"(100mm) liner 
over it at least 1-3/8" (35mm). Fasten with 
the 3 screws (drilling pilot holes will make this 
easier). Apply Mill Pac or high temperature 
silicone to the 6-7/8"(175mm) fl ex pipe and 
slip it over the 6-7/8" outer collar of the vent 
terminal at least 1-3/8"(35mm) and fasten 
with the 3 screws.

4)  Separate the 2 halves of the wall thimble and 

securely fasten the one with the tabs to the 
outside wall making sure that the tabs are 
on top and bottom. Fasten the other thimble 
half to the inside wall. The thimble halves 
slip inside each other and can be adjusted 
for 2 x 4 or 2 x 6 walls. The liners must slip 
over the collars a minimum of 1-3/8".

local codes.  Note that for steep roof pitches, 
the vertical height must be increased.  A poor 
draft, or down drafting can result from high 
wind conditions near big trees or adjoining 
roof lines, in these cases, increasing the vent 
height may solve the problem.

7)  Ensure vent is vertical and secure the base 

of the fl ashing to the roof with roofi ng rails, 
slide storm collar over the pipe section and 
seal with a mastic.

8)  Install the vertical termination cap by twist-

locking it.

1)  Locate the unit in the framing, rough in the 

gas. Locate the centerline of the termination 
and mark wall accordingly. Cut a 10"(254mm) 
hole in the wall (inside dimension).