HomeMy WebLinkAboutB17-0021_M0.0_1503082920.pdfGeneral
1. Immediately notify the engineer of any discrepancies.
2. Do not scale drawings. Verify dimensions in field prior to commencement of work.
3. Work shall be performed in a workmanlike manner to the satisfaction of the architect &
the engineer.
4. 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.
5. Provide record drawings to architect. Drawings shall include all addendum items,
change orders, alterations, re-routings, etc.
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. Coordinate architectural, structural, electrical, landscaping, fire protection, and interior
design drawings with mechanical drawings prior to installation.
9. Offset piping, ductwork, etc. as necessary to accommodate structure, beams, columns,
and existing equipment.
Remodel & Demolition
10. 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.
11. In as much as design for remodel 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.
12. Field verify locations of all existing piping, equipment, ductwork, etc.
13. All new ductwork, piping, equipment, etc. is shown with dark lineweight. All existing
ductwork, piping, equipment, etc. is shown with light lineweight.
Insulation
14. Insulate all new piping to match the insulation being installed for the base building
systems (white fiberglass type). Minimum insulation thickness shall comply with 2015
IECC table 403.2.10. Insulate all new heating water, refrigerant piping, domestic cold
water, domestic hot water and domestic hot water recirculation piping.
15. All new rectangular ductwork shall be unlined, unless noted otherwise.
16. Externally wrap all round outside air and round relief air ductwork as well as all unlined
supply air ductwork and the bypass duct (if applicable) with 2" duct wrap with vapor
barrier. Minimum R-value shall be 6.5.
17. Insulate all new refrigerant suction piping & condensate piping with flexible, closed-cell
HODVWRPHULF LQVXODWLRQ ´ WKLFN ,QVXODWLRQ VKDOO KDYH D IODPH VSUHDG LQGH[ RI QRW PRUH
than 25 and a smoke-developed index of not more than 50 when test in accordance with
ASTM E 84, latest revision.
18. Elastomeric insulation: Slip insulation over pipe before assembly so that there are no
length wide seams. Where lengths of insulation are butted together, use factory
recommended adhesive. Glue the butt ends of insulation to each other to form a
homogenous membrane maintaining the vapor barrier. Exterior elastomeric insulation
shall be installed with the longitudinal seam on the bottom of the pipe and shall be
protected with an ultra violet resistive paint. Elastomeric insulation shall be covered
with two coats of paint manufactured specifically for covering Elastomeric insulation,
Armaflex WB Finish or equal.
Piping
19. Domestic Hot, Cold & Recirculation piping inside building - Type 'L' copper water tube,
wrought copper fittings and no lead solder.
20. Waste & Vent piping - Standard weight, C.I. soil pipe, and fittings, or hubless, C.I. soil
pipe and fittings. Up through 2-1/2" may be standard weight, galvanized steel pipe with
black, C.I. drainage fittings.
21. Heating Water piping - Type 'L' copper water tube, wrought copper fittings, and no lead
solder.
22. Refrigeration Piping - Type 'L', ACR Grade copper, cleaned, dehydrated, capped and
charged with clean nitrogen at the factory. Use wrought copper fittings and hard solder
having a minimum melting point of 1100F for buried lines, no lead solder for non-buried
lines. Valves and specialties shall be standard brass or bronze valves for refrigeration
VHUYLFH %XULHG SLSH VKDOO EH VXUURXQGHG E\ ´ FOHDQ VDQG
23. 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.
CSST pipe is permitted for final connections only.
24. Drain Pan piping - Type 'M' copper, wrought copper fittings, and no lead solder.
25. 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.
26. Support pipe with rod and clevis or clamps. No pipe tape allowed.
27. 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.
28. Install plumbing clean-outs as required by applicable codes.
Ductwork
29. Duct sizes shown on drawings are outside (sheet metal) duct dimensions.
30. Seal all ductwork joints and vapor barrier penetrations at all exterior walls.
31. Provide backdraft dampers at any and all ductwork penetrations through exterior wall
(except outside air and combustion air ductwork).
32. Provide turning vanes in all mitered rectangular elbows.
33. Provide volume dampers at all accessible round duct take-offs.
34. Make all final connections to supply GRD's with acoustic flexible duct. Maximum length
shall be 8 feet.
35. All ductwork or surfaces which are visible behind a grille, register, or diffuser shall be
painted flat black.
36. Sheet metal and fittings to be pursuant to SMACNA and ASHRAE standards.
37. Seal off all ducts during construction.
Controls
38. Mount all thermostats 5'-0" above finished floor.
39. All thermostats shall have a temperature range suitable for the application and have
adjustable set points. The thermostats shall be able to display temperature setpoint and
room temperature. All thermostats shall be approved by the owner.
40. Freeze Detection Thermostats. Each supply system with water coils taking outside air
shall have a freeze detection thermostat located on the downstream side of the coil.
Thermostats shall be of adjustable electric contact type, silver plated, manual reset with
20' flexible sensing bulb of increment type with any section capable of actuating
mechanism on temperature drop below set point, thermostat shall stop fan(s) and close
outside air damper. They shall have an isolated set of contacts for alarm system.
41.See Sequence of Operation for additional control information.
Balancing
42. Air and water flows must be balanced, and fan belts, pumps, and drive systems adjusted
as required. Balance contractor shall furnish TAB report to Engineer for review. All
supply grilles, registers and diffusers are to be provided with volume dampers per 2015
IMC, chapter 6.
1. Existing FC-404a Fan Coil & New CU-404a Condensing Unit (2-zone, 2-stage)
a. COOLING: Upon a call for cooling, fan shall start and CU-404a condensing unit
shall be enabled. Condensing unit shall be staged as directed by the zoning
control board to meet the cooling demand. Condensing unit shall be furnished
with soft start and anti-cycling controls.
b. ZONING: Provide a zoning system. Zoning system shall include 3 zone dampers,
1 modulating bypass damper, and controls as required. Zone Dampers ZD-2a &
ZD-2b shall be "twinned" so they operate together as a single zone, and shall not
operate independently. Minimum damper position shall be set to 10% open to
allow bleed by of airflow. Bypass damper shall modulate to maintain duct
constant supply duct static pressure at pressure sensor mounted in supply air duct.
Exact static pressure setpoint shall be determined by contractor during TAB.
c. HUMIDIFICATION: See humidification sequence. During a call for
humidification only, all zone dampers shall fully open.
2. Existing FC-404b Fan Coil & New CU-404b Condensing Unit
a. COOLING: Upon a call for cooling, fan shall start and CU-404b condensing unit
shall be enabled. Condensing unit shall be furnished with soft start and
anti-cycling controls.
b. HUMIDIFICATION: See humidification sequence. During a call for
humidification only, all zone dampers shall fully open.
3. Existing H-1 & H-2 Steam Humidifiers
a. Upon a call for humidification from wall mounted humidistat, associated fan shall
start and once airflow is proven by air proving switch, humidifier shall start.
b. Include a high limit duct humidistat located in the supply air duct, downstream of
the steam absorption zone, to disable humidifier if RH exceeds 80% (adj).
c. Include an automatic humidifier control from humidifier manufacturer, which
shall automatically reset the humidity setpoint based on outdoor temperature.
Outdoor reset curve shall be adjustable. Include outdoor air temperature sensor.
d. Humidification shall be disabled during calls for cooling.
Sequence of Operation
C
ALL RIGHTS RESERVED.
2014 MICHAEL SUMAN ARCHITECT, LLC.
EAST
MEADOW
DRIVE
VAIL, CO
O.W.B.
RESIDENTIAL
UNIT
404
12/9/16
08/18/17