- Vermont Castings Pinnacle & Stardance Direct Vent, Rear Vent Gas Heater Homeowner's Installation SDVR, PDV20: 3920, 3926, 3930, 3936, 3960, 3966, 3970, 3976, 4065, 4070, 4075, 4080

5
Pinnacle & Stardance Direct Vent - Rear Vent Gas Heaters
20007066
Clearance Requirements
Minimum Clearances to Combustible Materials
Measure side clearances as shown in Figures 3, 4 and
5 from the outer edge of the cast iron stove top.
Measure rear clearances from the outermost surface of
the steel rear skirt.
The PDV20 and SDVR heaters are approved for
installation into an alcove constructed of combustible
materials to the dimensions and clearances shown on
the next page.
The same clearances apply in a standard parallel
installation.
Minimum Clearances
C
L
18³⁄₄"
(476mm)
2¹⁄₂"
(64mm)
6"
(150mm)
6"
(150mm)
Parallel Installation
C
L
18³⁄₄"
(476mm)
2¹⁄₂"
(63mm)
6"
6"
PDV20
SDVR
ST128c
ST128a
Fig. 3 Parallel installation minimum clearances and flue centerline.
2" (50mm)
2"
(50mm)
7¹⁄₂"
(190mm)
Max. Vent
Length
20" (508mm)
Corner Installation
PDV20
Max. Vent
Length
20" (508mm)
7¹⁄₂"
(190mm)
2" (50mm)
2"
(50mm)
SDVR
ST129a
Fig. 4 Corner installation minimum clearances.
WARNING:
• Always maintain required
clearances (air spaces) to nearby combustibles
to prevent fire hazard. Do not fill air spaces with
insulation. All venting components must
maintain a 1" (25mm) clearance to combustible
materials. Maintain a 6” (152mm) clearance
when using single wall pipe. Maintain a 2”
(51mm) clearance when venting straight off the
rear.
• The gas appliance and vent system must be
vented directly to the outside of the building
and never be attached to a chimney serving a
separate solid fuel or gas-burning appliance.
• Refer to the manufacturer's instructions
included with the venting system for complete
installation procedures.