Related Manuals for Lochinvar PFN0752PM
Summarization of Contents
Codes and Installation Regulations
Location of Unit
Details regarding the suitability of units for indoor installation only, and protection requirements for ignition systems.
Combustion and Ventilation Air Requirements
Example of Sizing for Combustion and Ventilation Air Openings
Provides an example calculation for sizing combustion and ventilation air openings based on unit input.
Venting Systems
General Venting Guidelines
Covers general guidelines for vent installations, including code compliance, directness, and support of vent systems.
Vent Terminations
Specifies requirements for vertical vent termination placement and clearances from building features.
Masonry Chimneys
Details requirements for using masonry chimneys with high-efficiency appliances, including relining and material specifications.
Venting Overview
Explains various venting configurations including Category I and Category IV systems like DirectAire and Direct Vent.
Common Venting Systems
Guidelines for combining different types of vent systems, emphasizing compatibility and material requirements.
Sidewall Venting
Details sidewall venting systems, including flue termination, combustion air supply, and required materials.
DirectAire and Direct Vent Systems
Combined Combustion Air Inlet Points for DirectAire Systems
Details on combining air inlet points for multiple DirectAire appliances and requirements for exterior openings.
Sidewall Combustion Air Inlet
Covers sidewall air inlet cap requirements, part numbers, and installation considerations for DirectAire and Direct Vent systems.
DirectAire Vertical Systems
Describes DirectAire Vertical systems with sidewall air inlets, including flue termination and air inlet configurations.
DirectAire Horizontal Systems
Explains DirectAire Horizontal systems with rooftop or sidewall air inlets, and their respective termination requirements.
Direct Vent Systems
Covers Direct Vent systems, their configurations for rooftop or sidewall termination, and specific material requirements.
Gas Supply Requirements
High Altitude Applications
Explains how altitude affects gas appliance performance and provides a method for calculating derated input.
Water Connections
Inlet and Outlet Water Connections
Provides guidance on installing unions for service, and identifies inlet for return water and outlet for storage tank connection.
Low Water Temperature Delivery
Addresses applications requiring delivered water below 140°F, recommending mixing valves to prevent condensation and bacteria.
Water Velocity Control
Pump Operation
Details requirements for the water heater's pump, including sizing, fittings, and limitations for circulating water.
Water Treatment Recommendations
Water Flow Switch
Explains the function of the factory-installed flow switch as a low water cutoff device for safety.
Appendix A: Power-Fin Water Heater Piping Diagrams
Single Heater - Single Tank Piping
Illustrates the piping connections for a single Lochinvar water heater with a single storage tank.
Single Heater - Two Tanks Piping
Shows the piping configuration for a single Lochinvar water heater connected to two storage tanks.
Two Temperature - Single Heater - Single Tank Piping
Depicts piping for a two-temperature system with one water heater and one storage tank, including a mixing valve.
Two Heaters - Single Tank Piping
Illustrates the piping arrangement for two Lochinvar water heaters connected to a single storage tank.
Two Heaters - Two Tanks Piping
Shows the piping configuration for two Lochinvar water heaters connected to two storage tanks.
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