18-CD33D1-4 5
Installer’s Guide
From Dwg. 21C341884
*UH1-H OUTLINE DRAWING
(ALL DIMENSIONS ARE IN INCHES)
NOTES:
1. *UH1C100A9H41, & *UH1D120A9H51
REQUIRE 3” DIAMETER VENT PIPE.
2. DIAMETER OF VENT PIPE MAY BE LIMITED TO 2-1/2”
OR 3” ON SOME MODELS AT DIFFERENT ALTITUDES.
REFER TO THE VENT LENGTH TABLE FOR PROPER
APPLICATION.