Tjernlund SS1C SideShot with UC1 Universal Control (Version X.02) 8504103 Rev 07/02 - Manual (Page 17)

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SELECTION OF PRESSURE SWITCH BLEED ORIFICE
In order for the SideShot pressure switch to function properly for the intended application, the proper bleed orifice has to be
selected as determined below.
1. Upon installation, if the vent connector length is less than 3.1 equivalent meters (10 feet), then the smaller
opening #52 bleed orifice should be used.
2. Upon installation, if the vent connector length is greater than 3.1 equivalent meter (10 feet), then the larger
opening #40 bleed orifice should be used .
3. Once proper bleed orifice has been determined, install into the Bleed Orifice port as indicated.
DRAFT ADJUSTMENT PROCEDURE
NOTES: All draft adjustments are approximate. This
chart is to be used for initial draft adjustment only.
Subsequent draft adjustments may be required to com-
pensate for various field conditions: wind, vent pipe
resistance, building pressure, multiple appliances, etc.
BTU/HR input ratings assume 30% or less excess air
for flame retention burners and 50% to 100% excess
air for conventional oil burners.
Do not exceed the recommended BTU/HR input range
of the SideShot.
Under no circumstances shall the minimum draft
adjustment be used for the larger input range of this
product.
Improper draft adjustment may result in the dispersion
of flue products/carbon monoxide into the building interior.
DIAGRAM P
DIAGRAM P