Installation Instructions

Description
This kit contains the appropriate burner orifices, and/or pres-
sure switch for the application of 90% furnaces in installations
above their maximum (as shipped) rated altitudes. These kits
are not applicable in Canada. Kits apply as shown in the
table below.
Natural Gas Orifices Propane Gas Orifices Pressure Switch
No Change LPM-06 No Change
Natural Gas Orifices Propane Gas Orifices Pressure Switch
HANG16 HALP13 HAPS30
Natural Gas Orifices Propane Gas Orifices Pressure Switch
No Change LPM-06 No Change
Natural Gas Orifices Propane Gas Orifices Pressure Switch
HANG16 HALP13 HAPS31
7,001 - 11,000 Feet
UPFLOWCOUNTERFLOW
"Standard" and "High Altitude" Kits
0 - 7,000 Feet (Standard Altitude)
7,001 - 11,000 Feet
"Standard" and "High Altitude" Kits
0 - 7,000 Feet (Standard Altitude)
Table 1
Above an altitude of 7,000 feet, a derating of the appliance
must be followed since the CFM moved by the induced draft
blower remains almost constant while the pounds of oxygen
in that air is reduced as altitude increases. If this procedure
is not followed and the fuel input is not reduced the resulting
combustion can be inefficient, incomplete, or possibly cause
premature heat exchanger failure due to excessive tempera-
ture rise. The burner orifices in the high altitude kits have
been selected as a result of agency certified testing at high
altitude and will provide the appropriate derating (Table 2).
HANG16, HALP13, HAPS30, HAPS31
HIGH ALTITUDE CONVERSION KIT(S)
INSTALLATION INSTRUCTIONS
ATTENTION INSTALLING PERSONNEL
As a professional installer you have an obligation to know the product better than the customer.
This includes all safety precautions and related items.
Prior to actual installation, thoroughly familiarize yourself with this Instruction Manual.
Pay special attention to all safety warnings. Often during installation or repair it is possible to place
yourself in a position which is more hazardous than when the unit is in operation.
Remember, it is your responsibility to install the product safely and to know it
well enough to be able to instruct a customer in its safe use.
Safety is a matter of common sense...a matter of thinking before acting.
Most dealers have a list of specific good safety practices...follow them.
The precautions listed in this Installation Manual are intended as supplemental to existing practices.
However, if there is a direct conflict between existing practices and the content of this manual,
the precautions listed here take precedence.
Orifice selection is based on non-derated gas [at standard
conditions of 29.92 in Hg and 60°F—approximately 1,000 Btu/
ft
3
for natural gas and 2,500 Btu/ft
3
for propane]. NOTE:
“Point of use” Btu content will be less due to decreased
atmospheric pressure. If the Btu content of your gas sup-
ply has been artificially changed to account for altitude, con-
tact your gas supplier for orifice sizing.
Altitude (ft)
Natural Gas
Derate
Propane
Gas Derate
7,001 - 11,000 24 +
2% 33 + 2%
Table 2
Do not derate by adjusting the manifold pressure to a
lower pressure setting than specified on the furnace
nameplate. A lower air density in combination with a lower
manifold pressure at the burner orifice will prevent the orifice
from aspirating the proper amount of air into the burner re-
quired for complete combustion.
In addition to using smaller orifices to reduce the fuel input, a
different pressure switch must be used above the maximum
(as shipped) rated altitude. A high altitude pressure switch is
necessary as a result of the reduction in air density and is
required regardless of the Btu content of the fuel used.
Natural Propane
0 - 7,000 #43 #55
7,001 - 11,000 #44 #56
Burner Orifice Size
Altitude (ft.)
Table 3
RECOGNIZE THIS SYMBOL AS A SAFETY PRECAUTION
IO-686A
September 2013

Summary of content (8 pages)