Termination Clearances; General Information Assembling Vent Pipes - MHSC CDVR33N/PV7 Installation And Operating Instructions Manual

CDV7 Series Gas Fireplace

Termination Clearances

Termination clearances for buildings with combustible and noncombustible exteriors.
Inside Corner
G =
Combustible
G
Noncombustible
V
Balcony -
with no side wall
M
M =
Combustible &
Noncombustible
12" (305 mm)
*noTe: Termination in an alcove space (spaces open only on one side and with an overhang) is permitted with the dimensions specified for vinyl or
non-vinyl siding and soffits. 1. There must be a 3' (914 mm) minimum between termination caps. . All mechanical air intakes within 10' (1 m) of a
termination cap must be a minimum of 3' (914 mm) below the termination cap. 3. All gravity air intakes within 3' (914 mm) of a termination cap must
be a minimum of 1' (305 mm) below the termination cap.

GeneRal InFoRMaTIon aSSeMBlInG VenT pIpeS

uSa Installations
The venting system must conform to local codes and/or
the current National Fuel Code ANSI Z3.1/NFPA 54.
Only venting components manufactured by MHSC may
be used in Direct Vent systems.
Canadian Installations
The venting system must be installed in accordance with
the current CSA-B149.1 installation code.
Flex Vent pipes
Before joining the flex vent pipe to the unit, apply a bead
of high temperature sealant* (provided) to the 4" pipe
exiting the fireplace. Secure flex vent pipe in place with
a hose clamp (provided).
*Be sure the flex pipe overlaps at least 1" (5 mm) onto
the collars of the fireplace and termination. If the termi-
nation has an internal bead, be sure to overlap and se-
cure 1" (5 mm) past the bead.
14
Outside Corner
6" (152 mm)
V
2" (51 mm)
Balcony -
with perpendicular side wall
V
Combustible &
Noncombustible
M = 24" (610 mm)
P = 20" (508 mm)
VenTInG InSTallaTIon InFoRMaTIon
F =
Combustible
6" (152 mm)
Noncombustible
2" (51 mm)
F
M
V
P
Figure 9 -
Termination Clearances
* Be sure the vent is actually crushed before proceeding.
Apply a tug to be sure the vent will not slip off the collars.
Repeat process with 7" flex vent pipe. The same proce-
dure must be performed on the vent side.
FP90
Figure 10 -
Apply high temperature sealant to 4" and 7" pipes.
Alcove Applications*
D
C
V
E
O
E
= Min. 6" (152 mm) for
non-vinyl sidewalls
Min. 12" (305 mm) for
vinyl sidewalls
O
= 8' (2.4 m) Min.
No.
of Caps D
Min.
1 3' (914 mm)  x D
 6' (1.8 m)
3 9' (.7 m)
4 1' (3.7 m)
D = # of Termination caps x 3
Min.
C = ( / # termination caps) x D
Max.
Apply High Temperature
Sealant
C
C
Max.
Actual
1 x D
Actual
/3 x D
Actual
1/ x D
Actual
Actual
584-15
Hose Clamp
69D3011