A pre-design review should cover all existing boiler systems and components, and other building elements affected by the proposed scope of work to verify code-compliant boiler work, or modifications to the boiler systems. Based upon the complexity and scale of the project, the information provided on the boiler drawings should show a clear description of the work required for the project. (Refer to the NYC Administrative Code section §28-104.7.1.
Although DOB does not mandate the organization and style of construction documents, the guidelines outlined in this chapter should provide a consistent approach for preparation of construction documents that will facilitate the plan review process. In many cases, the project may involve the documentation of existing boiler or boiler systems and components, which should be clearly identified as new versus existing systems.
Projects may be Professionally Certified, per AC 28-104.2.1
Complete Submission of Boiler Systems Work Drawings
The construction documents represent work that is closely coordinated with many other disciplines such as architectural, structural, electrical, and plumbing. In order to ensure coordination with other disciplines, details essential for a complete submission of drawings can be found in the NYC Mechanical Code section AC 28-104.7 and BC 107.2 for information on submittal of and required construction documents.
A complete submission of drawings shall include:
Construction Documents. Drawings necessary to convey essential information such as schedules, riser diagrams, floor layout, mounting details and control diagrams. The title page should clearly define the project location and vicinity by graphical means. The applicable Building Codes and notes should be stated on the drawings. A drawing index is recommended to clearly identify all the unique systems that may be involved.
Site Plan. If the project involves exterior or underground work such as vault for location of boiler or fuel storage, an underground storage tank, fill-pipe fuel terminal, which are exterior to the building, then these should be clearly documented.
Floor/Roof Plans. Floor plans showing existing and proposed conditions with location of all equipment, gas, oil, vent, flue piping and chimney locations must be specified on the drawings. It is important to clearly identify room use designation, equipment location, fire-rated walls and their penetrations, means of exhaust and other code regulated assemblies. Roof plans must show boiler devices, mechanical rooms, fuel storage, ventilation, and any associated components. It is recommended to follow the architectural floor/roof plan nomenclature for sheet order and numbering in order to simplify the logical sequence of coordination with all trades and disciplines
Building Elevations. Required if the project involves location of combustion air, ventilation intakes, location of exhaust on building exterior in relation to operable windows and doors.
Building Sections. May be required for renovation projects and may include cross sections through chimney or flues.
Riser Diagrams. If the project involves alterations to existing or installation of new piping (oil/gas), combustion and ventilation ducts, respective riser diagram must be provided. The riser diagram must show the details of new and existing conditions, elevations across floors, dimensional characteristic of each element, and identify appliances it serves.
Detail Drawings. These drawings contain significant information required to clearly communicate the scope of work, in a magnified form. In addition, these drawings may also comprise several elevations and sections to convey the proposed scope of work.
Operating pressure of equipment
Building System Schedules. Schedule of equipment showing make, model, capacity, fuel type, heat input/output, efficiency, maximum pressure, GPM, RPM and electrical characteristic.
Energy Analysis. If project scope includes one of the following, an energy analysis is required on the plans: alterations to existing or installation of new piping carrying mechanically heated fluid, penetration through thermal envelope, equipment replacement, equipment controls replacement, and/or dampers. Commissioning is required when permitted equipment replacement exceeds a combined input capacity of 600kBTU/h
Some key elements required on plans for all projects include:
Validation that existing equipment and distribution services have met the sizing requirements per ECC C403.2
Number of boiler(s) size criteria (BTUs), including new or altered, fuel type gas/oil/dual, piping, on floor/roof plans and riser diagrams
Indicate appliance/equipment/device approval numbers (UL, other Listings, and/or site specific – indicate if field-erected, OTCR approved), efficiency rating, and mounting detail locations
Model number, if modular, state number of units
Proper identification of rooms, piping, valves, alarms, equipment, controls, interlocks and devices
Commercial or residential occupancy
Equipment Schedules with domestic hot water distribution temperatures
Fuel storage tank location(s), number of tanks, capacity, grade of oil
Indicate existing flue/chimney size, material, and proposed alteration, include a statement if a special inspection is required – see below
Penetrations through fire-rated assemblies and locations
Where applicable, indicate special inspection requirements
Where applicable, clearly indicate provisions for commissioning and completion requirements per ECC C408
Where applicable, indicate equipment securement to structure
Piping insulation rating Piping insulation location and thickness, per ECC C403.2.10
Water temperatures and high limit alarm locations
Penetrations through the thermal envelope - locations and sealing details, per ECC C402.5.1.1
Smoke/carbon monoxide detectors
Note: A Chimney Special Inspection is required when new or altered chimney work is involved.