Name: Burnham Apex APX399
Brand: Burnham
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Appendix B - Tables

Table

Number

Page

Number

Description

Section I - Product Description, Specications & 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 Specic Gravity Correction Factors

Table 22 61 Min./Max. Pressure Ratings

Burnham Apex APX399 User Manual

Table of Contents

Questions and Answers:

Burnham Apex APX399 Specifications

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