Regency P33-NG4 User Manual

Page of 52
Regency
®
 P33-4 Zero Clearance Direct Vent Gas Fireplace
25
INSTALLATION
GAS LINE 
INSTALLATION
The gas line is brought through the right side 
of the appliance. The gas valve is situated on 
the right hand side of the unit and the gas inlet 
is on the right hand side of the valve.
The gas line connection may be made of 
rigid pipe, copper pipe or an approved fl ex 
connector. (If you are using rigid pipe, ensure 
that the valve can be removed for servicing.) 
Since some municipalities have additional 
local codes it is always best to consult with 
your local authorities and the CAN/CGA B149 
installation code.
For USA installations follow local codes 
and/or the current National Fuel Gas Code, 
ANSI Z223.1.
When using copper or fl ex connectors use only 
approved fi ttings. Always provide a union so 
that gas lines can be easily disconnected for 
servicing. Flare nuts for copper lines and fl ex 
connectors are usually considered to meet 
this requirement.
Important: Always check for gas leaks 
with a soap and water solution or gas leak 
detector. Do not use open fl ame for leak 
testing.
Diagram 4
Diagram 3: The upper half of the fl ashing is 
installed under the roofi ng material and not 
nailed down until the chimney is installed. 
This allows for small adjustments.
Diagram 2
UNIT INSTALLATION 
WITH VERTICAL 
TERMINATION
1)  Maintain the 1-1/2" clearances (air spaces) to 
combustibles when passing through ceilings, 
walls, roofs, enclosures, attic rafter, or other 
nearby combustible surfaces. Do not pack 
air spaces with insulation. Check "Venting" 
Sections for the maximum 
vertical rise of the venting 
system and the maximum 
horizontal offset limitations.
2)  Set the gas appliance in its 
desired location. Drop a plumb 
bob down from the ceiling to 
the position of the appliance 
fl ue exit, and mark the location 
where the vent will penetrate 
the ceiling. Drill a small 
hole at this point. Next, 
drop a plumb bob from the 
roof to the hole previously 
drilled in the ceiling, and 
mark the spot where the 
vent will penetrate the roof. 
3)  A Firestop spacer must be installed in the 
fl oor or ceiling of every level. To install the 
Firestop spacer in a fl at ceiling or wall, 
cut a 10 inch square hole. Frame the hole 
as shown in Diagram 2 and install the 
fi restop.
Diagram 4
Note:   Apply  sealant  "Mill-Pac"  to  inner 
pipe and high temperature silicone 
sealant to outer pipe on every twist-
lock joint.
8)  Slide the appliance and vent assembly 
towards the wall carefully inserting the 
vent pipe into the vent cap assembly. It is 
important that the vent pipe extends into the 
vent cap suffi cient distance so as to result 
in a minimum pipe overlap of 1-1/4 inches. 
Secure the connection between the vent pipe 
and the vent cap 3 sheet metal screws. 
9)  Install wall thimble in the center of the 
10" square and attach with wood screws 
(Diagram 4).
4)  Assemble the desired lengths of pipe and  
elbows. Ensure that all pipes and elbow 
connections are in the fully twist-locked 
position and sealed.
5)  Cut a hole in the roof centered on the small 
drilled hole placed in the roof in Step 2. The 
hole should be of suffi cient size to meet 
the minimum requirements for clearance 
to combustibles of 1-1/2". Slip the fl ashing 
under the shingles (shingles should overlap 
half the fl ashing) as per Diagram 3.
6)  Continue to assemble pipe lengths.
Note:  If an offset is necessary in the attic to 
avoid obstructions, it is important to 
support the vent pipe every 3 feet, to 
avoid excessive stress on the elbows, 
and possible separation.  Wall straps 
are available for this purpose.
 
 
Galvanized pipe is desirable above the roofl ine 
due to its higher corrosion resistance. Continue 
to add pipe sections through the fl ashing until 
the height of the vent cap meets the minimum 
height requirements specifi ed in Dia. 4 or 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.
Note:  Any closets or storage spaces, which 
the vent passes through must be 
enclosed. 
Diagram 1
    Roof Pitch                   Minimum Vent Height
                                           Feet         Meters
fl at to 7/12 
      0.61
over 7/12 to 8/12 
0.61
over 8/12 to 9/12 
0.61
over 9/12 to 10/12 
2.5 
0.76
over 10/12 to 11/12 
3.25 
0.99
over 11/12 to 12/12 
1.22
over 12/12 to 14/12 
1.52
over 14/12 to 16/12 
1.83
over 16/12 to 18/12 
2.13
over 18/12 to 20/12 
7.5 
2.29
over 20/12 to 21/12 
2.44