Venting
Use Only Approved Venting
The Clarity gas heater is tested and listed for connection to a 4" (100 mm) listed Class B venting system.
If the unit is installed to vent through an approved masonry chimney or a
Observe local codes when venting the Clarity. If no local codes exist, follow the current edition of ANSI Z223.1 and CAN1- B149 installation codes.
Do not connect the venting to the flue of a chimney that serves a separate
The venting manufacturer's installation instructions must be followed exactly.
IMPORTANT: Because of the high efficiency and low flue gas temperatures of this appliance, it is important that it be connected to a
The most efficient venting systems are those that have a minimum number of bends and minimal horizontal runs.
The Clarity gas heater is equipped with a thermally acti- vated vent safety switch that will shut down the main burner if the heater is not properly venting. The safety switch will automatically reset after the heater has cooled down.
The switch will continue to cycle off and on until the venting problem is corrected. If you are unable to correct the venting problem, seek expert advice from your Harman dealer or installer.
DO NOT DISCONNECT OR BYPASS THE VENT SAFETY SWITCH.
WARNING: Operation of this heater when not con- nected to a properly installed and maintained venting system or tampering with the vent safey shutoff system can result in carbon monoxide (CO) poisoning and pos- sible death.
The Clarity gas heater is equipped with its own internal draft hood so no additional external draft hood is required. The heater should be installed so that the draft hood is in the same atmospheric pressure zone as the air inlets to the heater.
Test for Flue Spillage
A spillage test should always be made at the completion of the installation.
1.Start all exhaust fans in the home and then close all doors and windows in the room containing the heater.
2.Light the heater and allow it to run for 5 minutes on the high output setting. If the convection air blower is installed, it should be turned off for the test.
3.Hold a match or other source of smoke near the draft hood outlet on the upper back of the stove.
4.If the smoke is not drawn in, turn off the heater and determine the cause of the lack of draft. If necessary, seek expert advice.
For sites with swirling or turbulent wind conditions, a wind cap may solve the problem.
