For assistance or additional information, consult a qualified installer, service agency or the gas supplier. This boiler requires a special venting system. Read these instructions carefully before installing. 101008-01R1-2/07 Table of Contents I. Product Description ............................................................................ 2 II. Specifi cations ..................................................................................... 2 III. Before Installing .......................

of water) Min/Max GPM Sound Class” Max. Mounting Height (ft.)* Heat Spread at Max. Height* Cfm Outlet Velocity (Fpm) Final Air Temp. (°F) BH-18 13,000 1.3 0.49 0.3/5.0 II 9 18 400 500 90 BH-24 17,300 1.7 0.83 0.3/5.0 II 10 20 450 570 96 BH-33 24,500 2.5 0.12 0.4/10.0 II 11 22 630 495 96 BH-47 33,800 3.4 0.21 0.4/10.0 III 13 26 730 580 103 BH-63 46,500 4.7 0.47 0.5/15.0 III 15 30 1120 590 98 BH-86 61,900 6.2 0.79 0.5/15.0 III 16 31 1340 710 103 BH-108 81,000 8.1 0.85 0.5/20.0

When seeking information on heater, provide Model Number and Serial Number as shown on Rating Label located on top of the heater. Model Number Serial Number Installation Date Heating Contractor Phone Number Address 8144A001R4-2/07 TABLE OF CONTENTS I. PRECAUTIONS - IMPORTANT INFORMATION.................................................3 II. GENERAL INFORMATION A. Installation Limitations..............................................................................................4 B. Ins