Burnham Apex APX399, Installation, Operating And Service Instructions, Page: 127 / 132

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appendix B - Tables
Table
number
Page
number Description
Section I - Product Description, Specifications & Dimensional Data
Table 1 6 Dimensional Data (See Figures 1A, 1B and 1C)
Table 2A 10 Rating Data - Models APX500 and APX800 (0 to 5000 Feet Elevation Above Sea Level)
Table 2B 10 Rating Data - Models APX500 and APX800 (5001 to 10000 Feet Elevation Above Sea Level)
Section iii - Pre-installation and Boiler Mounting
Table 3 13 Apex (APX) Boiler Model Stacking Combinations
Section iV - Venting
Table 4 16 Vent/Combustion Air System Options
Table 5A 18 CPVC/PVC Vent & Air Intake Components Included With Boiler
Table 5B 19
CPVC/PVC Vent & Air Intake Components (Installer Provided) required for Optional Horizontal
(Snorkel) Termination
Table 5C 19
CPVC/PVC Vent & Air Intake Components (Installer Provided) required for Optional Vertical (Roof)
Termination
Table 6 20
Vent System and Combustion Air System Components Equivalent Length vs. Component Nominal
Diameter
Table 7 20 Expansion Loop Lengths
Table 8 22
Vent/Combustion Air Pipe Length – Two-Pipe Direct Vent System Options (CPVC PVC and Stain -
less Steel/PVC or Galvanized Steel)
Table 9 27 Approved Polypropylene Pipe, Fittings and Terminations - M&G/DuraVent
Table 10 27 Approved Polypropylene Pipe, Fittings and Terminations - Centrotherm Eco
Table 11A 31 Burnham Commercial Vent System Components (Stainless Steel)
Table 11B 31 Alternate Vent Systems and Vent Components (Stainless Steel)
Table 12 32 Concentric Vent Length
Table 13 32 Concentric Vent Components (Applicable to APX500 Only)
Section Vi - Water Piping and Trim
Table 14 46 Flow Range Requirement Through Boiler
Table 15 47
Recommended Circulator Models for Apex (APX) Boilers Based on 25°F Temperature Differential
and Up to 75 ft. Equivalent Length Near-Boiler Piping - Space Heating Circulator
Table 16 49 Fitting & Valve Equivalent Length
Table 17 52 Multiple Boiler Water Manifold Sizing
Table 18 58
Recommended Circulator Models for Apex (APX) Boilers and Alliance SL Indirect Water Heaters
Installed as Part of Near-Boiler Piping Up to 75 Ft. Equivalent Length - Domestic Hot Water
Circulator
Section Vii - gas Piping
Table 19A 59
Maximum Capacity of Schedule 40 Black Pipe in CFH* (Natural Gas) For Gas Pressures of 0.5
psig or Less
Table 19B 60
Maximum Capacity of Schedule 40 Black Pipe in CFH* (LP Gas) For Gas Pressures of 0.5 psig or
Less
Table 20 60 Equivalent Length of Standard Pipe Fittings & Valves
Table 21 61 Specific Gravity Correction Factors
Table 22 61 Min./Max. Pressure Ratings