Modern HydronicSystem Designs for Condensing Boilers
(boiler) and secondary (system) loops –Closely spaced tees or a mixing manifold • Prevents flow in one circuit from interfering with another –Example: As zone valves open, close, or modulate, and as system pumps vary speed, the boiler loop is not impacted. Monday, December 01, 2014 Modern Hydronic Designs For Condensing Boilers 7
Transport and storage The boiler: - must be stored vertically in an environment where the temperature is between -20°C and +55°C, and where relative humidity is between 5% and 95%; - must not be stacked, - must be protected from humidity. 1.2. Symbols used in this document.
The boiler shall be externally inspected prior to or on the expiration date of the permit by a qualified inspector who may, if conditions warrant, issue a temporary permit which shall expire not more than six (6) months after the date of external inspection.
The fire tubes shall be 1/2" or 5/8" OD, with no less than 0.049" wall thickness. The upper and lower stainless steel tubesheet shall be no less than 0.25" thick. The pressure vessel/heat exchanger shall be welded construction. The heat exchanger shall be ASME stamped for a …
modulating / condensing boiler having high flow resistance secondary circuits series primary loop primary circulator closely spaced tees boiler circulator combined with eliminating the multi-hundred dollar installation cost of the be sized for a flow of 4 feet per second or less under maximum flow rate conditions.
SECTION 235216 - CONDENSING BOILERS
The boiler water gage glasses should be blown down _____. o (A) when the boiler water level changes in a steaming boiler o (B) every 12 hours of steady boiler steaming operation o (C) twice each day on the midnight and afternoon watches • (D) when you are in doubt about the water level If choice D is selected set score to 1. 17.