HomeMy WebLinkAboutB15-0468_M1.0_1450288920.pdfGeneral
1. Immediately notify the Engineer of any discrepancies.
2. It shall be assumed that all subcontractors are experienced and thoroughly knowledgeable in
their respective areas of the construction industry and shall perform in a responsible manner in
an appropriate construction sequence.
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. Failure to order, or release order, for materials and/or equipment will not be accepted as a
reason to substitute alternate materials, equipment, or installation methods.
5. Work shall be performed in a workmanlike manner to the satisfaction of the Engineer.
6. 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.
7. 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.
8. Systems shall be tested for proper operation. If tests show work is defective, Contractor shall
make corrections necessary at no cost to Owner.
9. It is the Contractors' and manufacturers' responsibility to assure themselves that the code
authorities will approve any product to be installed on the project.
10. 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.
11. Offset piping, ductwork, etc. as necessary to accommodate structure, beams, columns, and
existing equipment.
Electrical
12. Contractor must carefully verify electrical service voltage and phase available before ordering
any equipment.
13. The following are to be furnished by MC and wired by EC: equipment motors, magnetic
starters, factory disconnect switches (if specified as part of factory wired equipment) resistance
heaters, fire and smoke detectors.
14. The following are to be furnished and wired by EC: disconnect switches, thermal overload
switches, manual operating switches and contactors.
15. 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.
Remodel, Demolition & Unforeseen Conditions
16. 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.
17. 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.
18. 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.
19. Field verify locations of all existing piping, equipment, etc.
20. 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).
21. All new piping, equipment, etc. is shown with dark lineweight. All existing 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, 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, and domestic hot water recirculation with
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insulation and premolded PVC covers.
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, and heating water piping inside building -
Non-buried lines, type 'L' copper water tube, wrought copper fittings and no lead solder.
28. 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.
29. Support pipe with rod and clevis or clamps. No pipe tape allowed.
30. Dielectric Unions - Furnish and install a dielectric union at all connections where non-ferrous
material is in contact with ferrous material and fluid is not protected with corrosion inhibitors.
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system. Vent all high points in equipment rooms as necessary with automatic air vents piped to
convenient drain. All high points in system outside of equipment rooms with manual air vents
as required to relieve air in the system.
Mechanical Specifications
1. WH-1, 2 & 3 Water Heaters
a. Upon a call for heating from temperature sensor TS-1, 2 or 3, associated water heater pump shall start,
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2. Pumps
a. P-1 Pump shall run whenever there is a call for heat from TS-1 temperature sensor at WH-1 water heater.
b. P-2 Pump shall run whenever there is a call for heat from TS-2 temperature sensor at WH-2 water heater.
c. P-3 Pump shall run whenever there is a call for heat from TS-3 temperature sensor at WH-3 water heater
d. P-4 Domestic Recirculation Pump shall be controlled by integral timer and aquastat.
e. P-5 Domestic Recirculation Pump shall be controlled by integral timer and aquastat.
Sequence of Operation
7/8/15
12/16/15