Section 2: Framing; Rough Frame-In Dimensions; Fireplace Installation - Montigo R320-ST Installation & Maintenance Manual

R320-ST & 420 ST Power Vent Indoor Gas Fireplace

Section 2: Framing

Step 1. To ensure your glass viewing area is at the optimum height,
follow the figures and examples below to determine where to build
the fireplace platform. For example: Determine the height where
you want the bottom edge of the glass to be, then subtract 14¾"
from that dimension. The result is the dimension you will build the top
Figure 2. Fireplace installation, (Rough Frame-In dimensions) Both Sides are Typical.
Step 2. Place the Fireplace on the platform and install the Vent
pipe, and Power Vent module. Next, Connect the Gas line, and
provide a gas service shut-off valve; according to local gas codes.
Install Montigo heat shield Part No.
RHS101 if vent passes through
the ceiling within 6' of unit
Figure 2a. Fireplace installation, (Inlet Gas & Power Vent) .
Page 6
Installation
S (Opening) both sides typical
Framing Dimensions
Model# S T
R-Series R320 56¾" 69¼" 23¾"
R-Series R420 68¾" 69¼" 23¾"
of the platform to. For example if you want the Bottom of the Glass
to be at 24" the equation is 24" - 14¾" = 9¼". So that the top of the
platform will be at 9 1/4". This dimension takes in account the
height of the platform, plywood and adequate clearances.
T (Opening)
U
both sides
typical
Before fastening in place Line up the front face and rear face of the
fireplace (top and bottom), Figure 2a. then secure in place with 1/4"
wood screws.
Intake / Exhaust
Venting
Supply Gas
connection
U
¾"
Plywood
Platform
3" clearance to combustibles
around the exhaust pipe
when using firestop
½"
Both
Sides
Typical
XG0772 - 030711