STERLING SEPARATED COMBUSTION UNITS
QVSB, QVSD, MS & SVFS
HORIZONTAL CONCENTRIC VENT KIT (Option #M5)
HCVS-2
This Horizontal Concentric Vent Kit utilizes
one 8 inch termination in which both the
discharge flue gas and the combustion air
inlet pases.
KIT CONTENTS
(1) Part No. 3603 –
Concentric Vent Box Assembly
(See Figure 1)
(1) Part No. 3604 –
Inlet Air Screen
(1) Part No. 3605 –
Flue Terminal Assembly
(1) Tube –
Silicone Sealant
(1) Part No. IIMOW6/7 –
Installation Instructions
VENTING REQUIREMENTS
Standard two pipe venting and concentric
vent kits are certified by A.G.A. and C.G.A.
as venting methods for our Separated
Combustion Models QVSB, QVSD and
QVSF. No other venting arrangements are
approved or certified for use with Sterling
Separated Combustion Unit Heaters and
Duct Furnaces.
All pipes are field supplied; 24 gauge single
wall galvanized steel is recommended. All
joints must be sealed with either high
temperature silicone or aluminum foil tape.
The maximum vent length for the combustion air inlet is 50 equivalent feet. The
maximum vent length for the flue gas outlet
is also 50 equivalent feet. Allow 10 equivalent feet for each 90 degree elbow, and 5
equivalent feet for each 45 degree elbow.
See Figures 2 and 3 for typical installations
of the Sterling Horizontal Concentric Vent
Kit.
Table 1
Unit Air Inlet Discharge
Capacity Size Flue Size
100, 125, 150, 200 4" (102mm) 4" (102mm)
200, 225, 250 5" (127mm) 5" (127mm)
300, 350, 400 6" (152mm) 6" (152mm)
Figure 1– Concentric Vent Box Assembly - Dimensional Data
Lock Seam
In. (203 Mm) Dia.
tack Ext.
5 In.
(127 mm)
10 In.
(254 mm)
5 In.
(127 mm)
Stove Pipe Crimp
5 In. (127 mm) Dia.
Stack Ext.
6 In. (152 mm) Dia.
Stack Ext's.
8 In.
(203 mm)
17 In.
(432 mm)
(51 mm)
4 In.
(102 mm)
(178 mm)
2 In.
7 In.
2 In.
(51 mm)
D4499
HVAC PRODUCTS
260 North Elm St., Westfield, MA 01085
(413) 564-5540 Fax: (413) 562-5311
www.sterlinghvac.com
PROJECT:
UNIT TAG:
HORIZONTAL CONCENTRIC VENT KIT (Option #M5)
Figure 2– Typical Horizontal Vent Kit Installation
Separated Combustion Unit
Terminate To Vertical
Requirements Shown In
Figure 3.
To Outside Vent Cap
D4500
Increasers As Required
(Field Supplied)
Flue Discharge
(2) Mounting Brackets
(Field Supplied)
Combustion
Air Inlet
Wall
Figure 3– Typical Horizontal Vent Kit Installation Requirements
Reducer/increaser As Required
(Reducer Is Field Supplied)
Power Venter Assembly
Fan/Motor Assembly
Top View
D4498-1
D4498-2
Inlet Air Screen
Part# 3604
Rear View
16 In. (406) Min.
24 In. (610) Max.
Flue Terminal Assembly
(Field) Part # 3605 (Shown)
or (Breidert) Part # 2221-2
Wall
Wall
Thimble
17 In. (432)
Concentric Vent Box
Part # 3603
7 In.
(178)
60 In. (1524) Max.
6 Ft. (1.8 m) Min.
30 Ft. (9.2 m) Max.
10 In.
(254)
Size Pipes According To
Table 1.
Flue
Discharge
Combustion
Air Inlet
Size Pipes According To
Table 1.
Flue
Discharge
Pitch Pipes To Drain
1/4" Per Foot
Combustion
Air Inlet
Separated
Combustion
Unit
Separated
Combustion
Unit