HomeMy WebLinkAboutM2.0.pdfMECHANICAL SPECIFICATIONS
SEQUENCE OF OPERATION
General
1. Immediately notify the Engineer of any discrepancies.
2. Do not scale drawings. Verify dimensions in field prior to commencement of work.
3. It is the intent of these drawings and specifications to establish a standard of quality. The Engineer reserves the right to take exceptions
to approve methods and materials not reflected herein.
4. Work shall be performed in a workmanlike manner to the satisfaction of the Architect & the Engineer.
5. Labor, materials, and equipment shall conform to the latest applicable editions of local, State of Colorado, and National Codes and
ordinances. If conflict between those publications exists, the most stringent requirement shall apply.
6. The drawings show the intent of the mechanical systems but do not show all details required. It is the responsibility of the Contractors
to install complete & operable systems, which conform to the manufacturers' installations instructions & industry standards.
7. Systems shall be tested for proper operation. If tests show work is defective, Contractor shall make corrections necessary at no cost to
Owner.
8. It is the Contractors' and manufacturers' responsibility to assure themselves that the code authorities will approve any product to be
installed on the project.
9. Systems shall be professionally labeled. Piping shall be labeled with color coded commercial grade labels indicating piping service and
flow direction. Equipment labels shall follow the same nomenclature as the mechanical drawings.
Electrical
10. Contractor must carefully verify electrical service voltage and phase available before ordering any equipment.
11. The following are to be furnished by MC and wired by EC: equipment motors, magnetic starters, line voltage thermostats, factory
disconnect switches (if specified as part of factory wired equipment) resistance heaters, fire and smoke detectors.
12. The following are to be furnished and wired by EC: disconnect switches, thermal overload switches, manual operating switches and
contactors.
13. The following are to be furnished and wired by MC: low voltage thermostats, control transformers, control relays, control panels,
motorized valves, motorized dampers, pilot lights, multi-speed switches and interlocks.
Shop Drawings
14. Submit entire HVAC and plumbing shop drawing submittal data at one time. Submittal to be bound in three-ring binders, indexed in a
neat and orderly manner. Partial submittals will not be accepted. Submittals shall include, but not be limited to: equipment, fixtures,
insulation, pumps, piping, valves, and boilers.
Remodel, Demolition & Unforeseen Conditions
15. Visit site prior to bid and verify the conditions. Include in the bid, costs required to make work meet existing conditions, whether
indicated or not.
16. Provide mechanical demolition required. Visit site prior to bid to determine extent of work involved. Provide labor and materials as
required to maintain and/or restore continuity of service to existing systems.
17. In as much as design for remodel, renovation and/or rehabilitation requires that certain assumptions be made regarding existing
conditions and because some of these assumptions cannot be verified without destroying otherwise adequate or serviceable portions of
the building, the Engineer cannot assure the Owner or the Contractor that the professional consulting services herein encompass all
contingencies. Field coordination during construction is imperative. Contractors bidding this work must make reasonable allowances
for unseen conditions and should include associated allowances in their bids noted as such.
18. Field verify locations of all existing piping, equipment, etc.
19. Be responsible to field verify existing equipment remaining to be reconnected to new or existing systems. Provide piping, controls, etc.,
as required to restore continuity to system(s).
20.Equipment shown on this plan are new, except where noted.
21. All new ductwork, piping, equipment, etc. is shown with dark lineweight. All existing ductwork, piping, equipment, etc. is shown with
light lineweight.
22. All removed piping, equipment, etc. are to be disposed of by Contractor unless noted otherwise.
23. All existing support rods and straps now supporting pipes, electrical conduit, etc. that are removed to allow room for installation of new
equipment shall be relocated and reinstalled, or replaced if damaged.
24. New hot and cold water branches to be routed from nearest hot water and cold water of line size equal to or greater than new branch -
typical.
Insulation
25.Insulate all new heating water, domestic hot water, domestic hot water recirculation, radiant floor (mains and runouts to areas being
heated) and snowmelt piping (mains and runouts to areas being heated) with U.L. approved, white, all service, glass fiber, snap-on, pipe
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premolded PVC covers. Provide deduct alternate price to insulate with Armaflex.
26.Insulation for all types of piping shall be carried full size through pipe hangers or pipes shall be supported with vibration clamps.
Piping
27.Domestic Hot, Cold & Recirculation piping inside building - Non-buried lines, type 'L' copper water tube, wrought copper fittings and
no lead solder. Provide alternate pricing for PEX tubing (no oxygen diffusion barrier necessary).
28.Heating Water piping - For non-buried piping, type 'L' copper, wrought copper fittings, and no lead solder.
29.Gas Piping - Schedule 40 black steel pipe, 150 lb. malleable iron screwed fittings on above ground pipe, welded fittings with all piping
coated and wrapped on buried pipe. Welded gas piping shall be pressure tested at a minimum of 60 psi per Town of Vail amendment to
the 2009 IFGC, section 406.4.1. CSST pipe is permitted for final connections only.
30.Gas Valves - Lubricated plug valve 175 lb. W.O.G. iron screwed or flanged.
31.Copper pipe Valves and Specialties:
Gate Valves: Bronze, Class 125, 200 lb. W.O.G.
Ball Valves: Bronze, Class 125, 200 lb. W.O.G.
Check Valves: Bronze, Class 125, 200 lb. W.O.G.
Balancing Valves: 125 psig w.p. for 250F service tight shut-off, Illinois dual-purpose, balancing/shut-off valve, Hoffman, Sarco, or
equivalent.
32.Support pipe with rod and clevis or clamps. No pipe tape allowed.
33. Dielectric Unions - Furnish and install a dielectric union at all connections where non-ferrous material is in contact with ferrous material
and fluid in not protected with corrosion inhibitors.
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rooms as necessary with automatic air vents piped to convenient drain.
Boiler Flue & Combustion Air Piping
35. Boiler flue piping shall be CPVC, complying with ASTM F441.
36. Boiler combustion air piping shall be PVC, complying with ASTM D1785.
Antifreeze Solutions
37. DILUTION WATER QUALITY: Contractor shall be responsible for testing the water and submitting a report to the Owner & Engineer,
prior to system fill. "Hard" water shall not be used. The water used to dilute the concentrated inhibited glycol-based heat transfer fluid
must be either distilled, deionized, or contain less than 25 ppm of chloride, 25 ppm of sulfate, 50 ppm of calcium, and 50 ppm of
magnesium, with a total hardness not to exceed 100 ppm. If good quality water is unavailable, the manufacturer of the glycol product
will provide the heat transfer fluid and water to meet the specifications of the system.
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Controls
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additional information.
40.See Sequence of Operation for additional control information.
1. B-1, B-2, B-3 Boilers
a. Boilers shall be modulated, staged and rotated by integral Lochinvar boiler controls.
b. Boilers shall be staged to maintain HWS setpoint at temperature sensor TS-1. HWS setpoint shall be reset based on outdoor
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d. P-1, P-2, & P-3 boiler pumps shall run whenever associated boiler is firing.
2. WH-1 & 2 Indirect Water Heaters
a. Upon a call for heating from temperature sensors TS-2 or TS-3, associated water heater pump P-4 or P-5 shall start.
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c. Domestic hot water re-circulation pump shall be controlled by integral timer & aquastat. Provide a manual shut-off switch for
unoccupied periods.
3. Pumps
a. P-1 shall run whenever B-1 boiler is called to fire.
b. P-2 shall run whenever B-2 boiler is called to fire.
c. P-3 shall run whenever B-3 boiler is called to fire.
d. P-4 shall run whenever there is a call for heat from TS-2 temperature sensor at WH-1 water heater.
e. P-5 shall run whenever there is a call for heat from TS-3 temperature sensor at WH-2 water heater.
11/5/14
06/09/15