SLP98UHV / Page 4
DIRECT VENT SEALED COMBUSTION
SYSTEM (CONTINUED)
options
Termination Kit - Flush-Mount
Kit contains ush-mount termination, accelerator,
mounting template and hardware.
Kit may be used with 2, 2-1/2 or 3 in. pipe.
Termination Kits - Wall Assembly
Close Couple (US Only)
2 or 3 inch kit consists of close-couple, side-by-side
PVC piping with galvanized steel wall cover plate for
sealing and isolating piping penetration of the wall.
Piping spacing and length is sized for proper wall
installations.
CSA certied.
Close Couple WTK (Canada Only)
2 or 3 inch kit contains one insulated faceplate, one
insulated exhaust pipe, elbow and ttings.
Wall Ring
2 inch kit contains 2 stainless steel outside seal caps,
2 galvanized steel inside seal caps, 4 seal rings for
the caps and 18 inch insulation sleeve for sealing and
isolating intake and exhaust piping penetration of wall.
Maintain a maximum of 6 inches between the inlet and
outlet openings in the installation of the pipes.
Roof Termination Flashing Kit
2 or 3 inch kit contains two neoprene rubber roof
ashings for vertical venting through a roof.
Vent pipe and insulation not furnished.
Also available for use with 2 inch (use 3 inch ashing)
Concentric Vent Termination Kits used in vertical
venting rooftop applications.
BLOWER
Variable Speed Direct Drive Blower
Each blower assembly statically and dynamically
balanced.
Change in blower speeds is easily accomplished by
simple DIP switch changes on the SureLight control.
See Blower Performance tables.
Blower assembly easily removed for servicing.
Variable Speed Blower Motor
Variable speed motor maintains specied air volume
from 0 though 0.8 in. w.g. (heating) and 0 through 1.0 in.
w.g. (Cooling) static range.
Variable speed operation is achieved by the use of an
ECM (Electronically Commutated Motor) motor.
Motor is controlled by the SureLight
®
Control.
Motor is equipped with ball bearings and is resiliently
mounted.
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When furnaces are used with the Harmony III™ Zoning
System with conventional thermostats, blower motor
operates from predetermined minimum - maximum air
volumes to satisfy zone requirements.
CONTROLS
Surelight
®
Control (icomfort™ Compatible)
Advanced control communicates
information about various
operating parameters in the
furnace to the optional icomfort
Wi-Fi™ Thermostat to constantly
maintain the highest level of
comfort, performance and
efciency available.
Auto Conguration - On start-up
the control automatically sends
a description of the unit to the
optional icomfort™ Thermostat to automatically
congure the number of stages and features available.
Connections for connecting a conventional heating/
cooling thermostat are also provided on the control.
Control also features:
Innovative AirFlex™ technology allows custom blower
settings based on the application.
Precise Comfort Technology™ automatically adjusts
blower speed and heat input in increments as small
as 1% or as large as needed for greater temperature
control.
Variable-speed combustion air inducer is controlled by
the Surelight Control. Prior to ignition, a pre-purge cycle
for 15 seconds is initiated. After the main burners are
turned off, a post-purge cycle for 20 seconds is run.
Thermostat Control - Designed to operate in a variable
capacity mode. The unit will automatically adjust ring
rate based on demand and changing conditions. For
optimal performance, the use of a high-quality, digital
two-stage thermostat with adjustable settings for rst
stage/second stage, on/off differentials and adjustable
stage timers is recommended.
Furnace Input Staging Options
Thermostat Type Input Staging Available
icomfort™
Thermostats
Variable Capacity
(increments as small as 1%)
Four Stage (35, 60, 80, 100%)
Two-Stage
(Conventional)
Variable Capacity
(increments as small as 1%)
Two-stage (70% and 100%)
Single-Stage
(Conventional)
Three-Stage (35%, 70% and 100%)
SureLight
®
Ignition Control - Ignition control
continuously monitors line voltage and maintains the
igniter power at a constant level to provide consistent
lighting and maximum igniter life.
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FEATURES