SunSpan Heaters A Series, Инструкция по установке, эксплуатации и обслуживанию

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GQ pg. 14
ADDITIONAL COMBUSTION AIR
SUPPLY PIPING 4 IN. (10 CM) I.D.
(NOT INCLUDED)
SUPPORT AS NEEDED.
FLEX DUCT 4 IN. (10 CM) I.D.
18 IN. (46 CM) LONG
INLET AIR BOX
(ALTERNATE
OPTIONAL
ACCESSORY)
USE APPROPRIATE
FASTENERS
(NOT SUPPLIED)
INLET AIR WALL CAP
(OPTIONAL ACCESSORY)
REQUIRES 4" B-VENT ADAPTOR
(PROVIDED BY OTHERS)
OPTIONAL INLET AIR SLEEVE
(SEAM TO BE AT TOP)
TWO HOSE CLAMPS
INLET AIR
COLLAR
ROOF VENTING
CAP 4 IN.
(10 CM) I.D.
OPTIONAL
INLET AIR
SLEEVE (SEAM
TO BE AT TOP)
INLET
AIR COLLAR
FLEXIBLE DUCT
4 IN (10 CM) I.D.
ROOF VENTING CAP USED FOR INLET AIR MUST BE
6 IN. (15 CM) HIGHER THAN SNOW DEPTH.
ADDITIONAL COMBUSTION AIR
SUPPLY PIPING 4 IN. (10 CM) I.D.
(NOT INCLUDED)
SUPPORT AS NEEDED.
COMBUSTION AIR SUPPLY
GENERAL NOTES MAXIMUM LENGTHS OF AIR SUPPLY PIPE
•
Atmospheric air for combustion may come
from either outdoors or indoors (from within
the building).
•
Installation of combustion air supply must
comply with the instructions, drawings, and
installation notes provided in this section.
40 TO 125 MBTUH (12 – 37 kW) 35 linear ft. (10.7 m)*
130 TO 200 MBTUH (38 – 59 kW) 40 linear ft. (12.2 m)*
*Each 90 degree elbow inserted in the venting system
is equivalent to 10 linear ft. (3.0 m).
*Each 45 degree elbow inserted in the venting system
is equivalent to 5 linear ft. (1.5 m).
A maximum of two 90 degree elbows or their equivalent are allowed (e.g. one 90
degree elbow plus two 45 degree elbows; or four 45 degree elbows, etc.)
OUTDOOR AIR SUPPLY THRU-THE-WALL (OUTDOORS)
THRU-THE-ROOF (OUTDOORS)
•
Atmospheric air for combustion may come
from either outdoors or indoors (from within
the building).
•
Installation of combustion air supply must
comply with the instructions, drawings, and
installation notes provided in this section.
•
In buildings contaminated with excessive dust
or dirt, or containing substances which when
combined with flame and exhaust products
result in corrosive gasses or those under a
negative pressure, or high humidity areas,
combustion air must come from outdoors.
•
Outdoor air supply may be accomplished by
bringing in air through piping from either the
roof or wall as the drawings illustrate.
•
When combustion air is supplied from
outdoors, the heater must also be vented to
the outdoors (
EXCEPT high humidity
environments consult factory).
•
The roof venting cap used for inlet air cap
(roof), inlet air wall cap or inlet air box (wall)
must be located at least three (3) feet (.91 m)
away from any vent termination and in a
manner to prevent blockage by snow.
•
Components supplied by others must be
identical to those specified in this manual and
be Metalbestos brand, or equal.
NO
SUBSTITUTIONS .
•
Single wall 4” (10.2 cm) I.D., 26-gauge (.044
cm) minimum stainless or galvanized sheet
metal pipe or schedule 40 PVC is
recommended for combustion air supply
piping.
•
It may be desirable to insulate piping with 1
inch (2.54 cm) of pipe insulation to eliminate
condensation from warm inside air.
•
DO NOT use collapsible material for
combustion air supply, as it will restrict the
proper amount of combustion air from being
supplied to the burner.
•
An optional blower enclosure extends the
burner housing to enclose the blower. The
outdoor air piping is then attached to the
enclosure, isolating the outside of the blower
and motor from contaminants.
INDOOR AIR SUPPLY
•
When combustion air is to be taken from
inside a tightly closed building, an opening
must be installed to supply the burner with
sufficient air for combustion.
•
For every 4,000 BTUH (1.17 kW) input of the
total input of
ALL gas-fired equipment, one (1)
square inch (6.45 cm
2
) or more of free area
opening must be provided.
•
The openings should be located above the
heaters to reduce the effect of drafts.
•
Do not draw combustion air into the heater
from attic space. There is no guarantee
adequate air will be supplied