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Regency

®

 P33-4 Zero Clearance Direct Vent Gas Fireplace

24

Riser Vent

Termination

Min. 6-1/4"*

(159mm)

 b)  Horizontal runs of vent must be 

supported every three feet. Wall straps 
are available for this  purpose.

5)  Mark the wall for a 10" x 10"  square hole. 

The center of the square hole should line 
up with the centerline of the horizontal pipe. 
Cut and frame the 10 inch square hole in 
the exterior wall where the vent will be 
terminated. If the wall being penetrated is 
constructed of non-combustible material, i.e. 
masonry block or concrete, a 7"(178mm) 
diameter (7-1/2"(191mm) dia. for fl ex) hole 
is acceptable. 

Note:
 a)  The horizontal run of vent must be level, 

or have a 1/4 inch rise for every 1 foot 
of run towards the termination. Never 
allow the vent to run downward. This 
could cause high temperatures and may 
present the possibility of a fi re.

 

b)  The location of the horizontal vent 

termination on an exterior wall must meet 
all local and national building codes, 
and must not be blocked or obstructed.  
See "Exterior Vent Terminal Locations" 
Section.

 

c)  Snorkel Terminations:

 

 

For installations requiring a vertical rise 
on the exterior of the building, 14-inch 
and 36-inch tall Snorkel Terminations 
and the Riser Vent  as shown in 
Dia. 2 & 2a are available. Follow the 
same installation procedures as used 
for standard Horizontal Termination. 
NEVER install the snorkel upside 
down.

*As specifi ed in CGA B149 Installation Code. 
Local codes or regulations may require different 
clearances.

 

 

If the Snorkel Termination must be 
installed below grade, i.e. basement 
application, proper drainage must be 
provided to prevent water from entering 
the Snorkel Termination. Refer to 
Dura-Vent Installation instructions for 
details. Do not attempt to enclose the 
Snorkel within the wall, or any other 
type of enclosure.

6)  The arrow on the vent cap should 

be pointing up. Insure that the 1-1/2" 
clearances to combustible materials are 
maintained (Dia. 3). Install the termination 
cap. AstroCap

TM

 or Dura-Vent Horizontal 

Termination Cap may be used.

Install the vent system according to the 
manufacturer's instructions included with the 
components.

1)  Set the unit in its desired location. Check 

to determine if wall studs or roof rafters 
are in the way when the venting system is 
attached. If this is the case, you may want 
to adjust the location of the unit. Rough in 
the gas preferably on the right side of the 
unit and the electrical (junction block is on 
the left side) on the left.

2)  Direct Vent pipe and fi ttings are designed 

with special twist-lock connections to 
connect the venting system to the appliance 
fl ue outlet. A twist-lock appliance adaptor 
is an available option that must be used in 
conjunction with the Simpson Dura-Vent 
Direct Vent GS system. 

3)  Put a bead of silicone inside the outer section 

of the adapter and a bead of Fireplace Mate 
on the inner collar. Slip the adapter over the 
existing inner and outer fl ue collar and fasten 
to the outer collar only with the 3 supplied 
screws (drilling pilot holes will make this 
easier). Level the fi replace and fasten it to 
the framing using nails or screws through 
the nailing strips.

4)  Assemble the desired combination of pipe 

and elbows to the appliance adaptor and 
twist-lock for a solid connection.

Note:
 

a)    Twist-lock procedure: Four indentations, 

located on  the female ends of pipes and 
fi ttings, are designed to  slide straight 
onto the male ends of adjacent pipes 
and fi ttings, by orienting the four pipe 
indentations so they match and slide 
in to the four entry slots on the male 
ends, Dia. 1. Push the pipe sections 
completely  together, then twist-lock 
one section clockwise approximately 
one-quarter turn, until the two sections 
are fully locked. The female locking lugs 
will not be visible from the outside, on 
the Black Pipe or fi ttings. They may be 
located by examining the inside of the 
female ends.   

 

The four wood screws provided should 
be replaced with appropriate fasteners for 
stucco, brick, concrete, or other types of 
sidings.

 
7)  Before connecting the horizontal run of vent 

pipe to the vent termination, slide the Wall 
Thimble (Part # 620-926) over the vent 
pipe.

Min. 12"*
(305mm)

Dura-Vent

Snorkel