Trueheat TH36 - Chimney System Installation and Requirements; Trueheat Chimney System Overview

Framing members may be constructed to touch all points of zero clearance. The minimum dimensions required for framing
for the various models are shown in FIG. 4& 5. Remember, these dimensions are minimums, so if you desire, you may make
the framed fireplace opening larger to slide the fireplace into the opening after the framing is complete.
FIGURE 4
MEASUREMENT IN INCHES
MODEL
TH28
18 45 V. 13 18Y)
31
52
13 V, 33V.
17
TH36 15Vz 22
36 72
15
21
TH42
19
62Vi
18 V.
25v,
:<• ,
47 V.
25
12Vz
Three additional optional items that must be considered are;
1) gas appliance accessories, 2) outside combustion air and 3)
electrical connections for blower assembly. In order to allow for
easy installation of any of these items, it will be necessary for
you to
locate the fireplace near the appropriate utility outlet. Refer
to the section in these instructions concerning the accessory you
intend to use.
The Chimney System:
The Trueheat* Trueflow double wall chimney system has been
specially designed and UL Listed for use with all Trueheat*
fireplaces. The Trueheat* 28 and 36 inch models employ the 8 inch
Trueflow chimney while the 42 inch models use the 10 inch
Trueflow chimney. The Trueheat" Trueflow chimneys must be in
stalled at a minimum two inch clearance or "air space" from com
bustible material. Combustible material is defined as any material
that will burn such as wood, paper, plastics, etc.
Trueflow chimneys may be installed with one or two 30° off
sets (pair of elbows) per fireplace-chimney system. Offsets may
be desired to avoid plumbing, wiring, roof joists, etc. Never use
more than two 30° offsets per system and never connect 2 or 3
elbows together to make a 60° or 90° offset. Always secure the 4
elbow support straps to framing members of the structure. The
maximum offset distance is 8 ft. (To achieve an 8 ft. offset you
must use 4 - 4 ft. sections of pipe. The rise for an 8 ft. offset is
14Vi ft.) See FIG. 6. Always terminate the fireplace chimney to
the exterior of the structure. All chimneys should be terminated
a minimum of three feet above the point closest to roof of the
structure and use the 10 ft. rule. See FIG. 7. The 3ft. height helps
create the proper draft in the chimney system and is necessary
to keep the fireplace system safe.
The minimum height of the fireplace and chimney systems are
given in Table 1.
Trueheats Trueflow 8 and 10 inch chimney systems may
employ two 30° offsets also. See page 9, Double Offsets, for in
stallation of more than one chimney offset.
21V.
23V.
;-.••
Page 2
RISE
MAX. OFFSET
8 FT.
30° ELBOW
STRAIGHT SECTIONS
30s ELBOW
USE THE INFORMATION IN TABLE 3 TO
DETERMINE PIPE REQUIRED FOR DESIRED OFFSET
FIG. 6 OFFSET INSTALLATIONS
FIG. 7
10 FOOT RULE
If chimney is within 10' of roof peak the top should
extend a minimum of 24" above the roof peak. When
more than 10' from roof peak the top of chimney
should be positioned so that it is 10' or more from
the closest point on roof in a horizontal direction,
and a minimum of 24" above the point, but never less
than 3 ft. in height above the roof at the centerline
of the chimney.