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Details the PVWB model with continuous pilot ignition for gas-fired hot water boilers.
Describes the PWB model featuring electronic intermittent ignition for gas-fired hot water boilers.
Lists input, heating capacity, and net I=B=R ratings for models based on section count.
Explains input rating reductions for altitudes above 2,000 ft and general guidance for high altitude use.
Covers essential pre-installation checks for gas type, air, electrical, venting, and thermostat placement.
Guidelines for selecting a boiler location, required clearances, and ventilation needs.
Specifies minimum distances from the boiler to combustible materials for safe operation.
Details methods for providing combustion air: indoor air (standard/infiltration) and outdoor air (two/one opening).
Provides a table and formula for calculating minimum room volume for indoor air based on input MBH and ACH.
Instructions for installing the safety relief valve and its discharge piping to a drain.
Steps for correctly installing the temperature pressure gauge onto the boiler's supply water tee.
Recommends mixing valves for systems below 140°F to prevent low temperature return water.
Guidelines for integrating the boiler with refrigeration systems and air handling units.
Emphasizes checking chimney condition, size, and construction for proper venting of combustion gases.
Details vent damper installation, including placement, fastening, and adapter use for 2-section boilers.
Specifies the required minimum clearance between single-wall metal vent pipe and combustible materials.
Outlines steps for safely removing a boiler from a common venting system and verifying remaining appliances.
Explains how to check vent damper operation and provides instructions for manual control.
Details sizing gas pipes by length and BTU input, and rules for connecting gas piping to the boiler.
Essential safety warnings and procedures for checking gas piping, including leak detection and pressure testing.
Outlines requirements for the 120-volt power supply circuit, including amperage, shut-off, and grounding.
Guides on thermostat location selection and wiring to aquastat terminals, plus vent damper/circulator wiring.
Details wiring for intermittent ignition systems: thermostat, aquastat, pilot control, gas valve, and vent damper.
Details wiring for standing pilot systems: thermostat, aquastat, pilot, gas valve, and vent damper.
Explains the functions of safety relief valve, expansion tank, air purger, automatic fill valve, drain valve, and temperature control.
Describes the function of the circulating pump for system circulation and the vent damper for efficiency.
Explains the function of the rollout switch (flame rollout) and spill switch (blocked vent).
Details how a hot-water system operates and the procedure for filling it with water.
Provides critical warnings about fire/explosion, smelling gas, and handling submerged appliances.
Step-by-step instructions for operating an intermittent ignition boiler, including starting and shutting down.
Step-by-step guide for operating a continuous pilot boiler, including lighting and shutdown procedures.
Explains automatic gas valve, safety pilot function, and gas valve safety shutdown test procedures.
Instructions for adjusting pilot burner flame and checking main burner flame appearance for proper operation.
Guides on adjusting limit controls and recommended boiler water temperatures for different heating units.
Details annual checks for burners, flue passages, vent pipe, and instructions for cleaning the boiler and burners.
Covers testing the safety relief valve, managing expansion tank issues, draining the system, and servicing circulator pump valves.
Provides potential causes and solutions for common heating issues like thermostat problems, power loss, or poor radiator heat.
Offers troubleshooting advice for noisy burners, relief valve leaks, and water-logged expansion tanks.
Lists part numbers for jacket, section, and base components for various boiler sizes, 2 to 9 sections.
Lists part numbers for burner and manifold components, including gas valves, orifices, and pilot burners.
Lists part numbers for boiler controls (aquastats, pilot controls) and various piping fittings and valves.
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