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6
Getting Started
A. Design, Installation & Location Considerations
NOTICE: Check building codes prior to installation.
•
Installation MUST comply with local, regional, state and
national codes and regulations.
• Consult insurance carrier, local building inspector, fire
officials or authorities having jurisdiction over restrictions,
installation inspection and permits.
Since pellet exhaust can contain ash, soot or sparks, you
must consider the location of:
• Windows
• Air Intakes
• Air Conditioner
• Overhang, soffits, porch roofs, adjacent walls
• Landscaping, vegetation
When locating vent and venting termination, vent above
roof line when possible.
NOTICE: Locating the appliance in a location of
considerable air movement can cause intermittent smoke
spillage from appliance. Do not locate appliance near:
•
Frequently open doors
•
Central heat outlets or returns
B. Draft
Draft is the pressure difference needed to vent appliances
successfully. When an appliance is drafting successfully,
all combustion by products are exiting the home through
the chimney.
Considerations for successful draft include:
•
Preventing negative pressure
•
Location of appliance and chimney
To measure the draft or negative pressure on your appliance
use a magnehelic or a digital pressure gauge capable of
reading 0 - .25 inches of water column (W.C.).
The appliance should be running on high for at least 15
minutes for the test.
With the stove running on high you should have a negative
pressure equal to or greater than the number given in the
chart. If you have a lower reading than you find on the
chart, your stove does not have adequate draft to burn the
fuel properly.
MODEL
PH35PS
PH50PS
PH50CAB
22
Minimum Vacuum
Requirements
0.17 inches W.C.
0.17 inches W.C.
0.17 inches W.C.
7077-171I • December 08, 2016
B. Draft (Cont'd)
Correct low draft or low vacuum problems by doing one of
the following:
• Thoroughly clean the exhaust path and venting. See
Maintenance Section.
• Inspect for worn or broken gaskets. Repair any gaskets
suspected of leaking, or adjust the trim.
NOTICE: GHP assumes no responsibility for the
improper performance of the chimney system caused by:
•
Inadequate draft due to environmental conditions
•
Downdrafts
•
Tight sealing construction of the structure
•
Mechanical exhausting devices
C. Negative Pressure
WARNING! Risk of Asphyxiation! Negative pressure can
cause spillage of combustion fumes and soot.
Negative pressure results from the imbalance of air avail-
able for the appliance to operate properly. It can be stron-
gest in lower levels of the house.
Causes include:
•
Exhaust fans (kitchen, bath, etc.)
•
Range hoods
•
Combustion air requirements for furnaces, water heaters
and other combustion appliances
•
Clothes dryers
•
Location of return-air vents to furnace or air conditioning
•
Imbalances of the HVAC air handling system
•
Upper level air leaks such as:
- Recessed lighting
- Attic hatch or open windows
- Duct leaks
To minimize the effects of negative air pressure:
•
Install the outside air kit with the intake facing prevailing
winds during the heating season
•
Ensure adequate outdoor air for all combustion appliances
and exhaust equipment
•
Ensure furnace and air conditioning return vents are not
located in the immediate vicinity of the appliance
•
Avoid installing the appliance near doors, walkways or
small isolated spaces
•
Recessed lighting should be a "sealed can" design
•
Attic hatches weather stripped or sealed
•
Attic mounted duct work and air handler joints and seams
taped or sealed
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