HomeMy WebLinkAboutM1.0.pdf1. WH-1, WH-2, & WH-3 Water Heaters
a. Upon a call for heating from Temperature Sensors TS-1, TS-2 or TS-3, associated water heater shall fire.
b. 7DQNWHPSHUDWXUHVKDOOEHVHWDW)ߛDGMߜ
c. 7097KHUPRVWDWLF0L[LQJ9DOYHVKDOOEHVHWIRU)ߛDGMߜ
2. B-1 Boiler
a. %RLOHUVKDOOEHHQDEOHGZKHQHYHU26$WHPSHUDWXUHLVOHVVWKDQ)DQGWKHUHLVDFDOOIRUKHDWIURPDQ\RIWKH
following:
a.a. Building D/E Snowmelt (east wall of boiler room).
a.b. Building D/E Snowmelt (north wall of boiler room).
a.c. Building D/E Connector Radiant Heat.
a.d. Building D/E Garage Heat.
a.e. Building F Snowmelt.
b. Boiler shall be modulated by integral Lochinvar boiler controls to maintain HWS setpoint at Temperature Sensor
76+:6VHWSRLQWVKDOOEHVHWDW)ߛDGMߜ
c. P-1 Boiler Pump shall run whenever boiler is called to fire.
3. Building D/E Snowmelt (east wall of boiler room)
a. Snowmelt shall be controlled by existing Tekmar 662 control.
b. Upon a call for snowmelting, P-2 pump shall start and B-1 Boiler shall be enabled.
4. Building D/E Snowmelt (north wall of boiler room)
a. Snowmelt shall be controlled by existing Tekmar 665 control.
b. Upon a call for snowmelting, P-3 pumps shall start and B-1 Boiler shall be enabled.
5. Building D/E Connector Radiant Heat
a. Upon a call for heat from existing thermostat in Connector, P-4 pump shall start and B-1 Boiler shall be enabled.
6. Building D/E Garage Heat
a. Upon a call for heat from existing garage thermostat(s), new 2-way control valve at Garage Unit Heater shall
open and P-5 pump shall start. B-1 Boiler shall be enabled.
7. Building F Snowmelt
a. Upon a call for snowmelting from existing ETI Snow Sensor, new 2-way control valve in Parking Garage shall
open and P-5 pump shall start. B-1 Boiler shall be enabled.
8. Pumps
a. P-1 B-1 Boiler: pump shall run whenever B-1 Boiler is called to fire.
b. P-2 D/E Snowmelt (east wall): pump shall run whenever there is a call for snowmelting from existing Tekmar
662 control.
c. P-3 D/E Snowmelt (north wall): pump shall run whenever there is a call for snowmelting from existing Tekmar
665 control.
d. P-4 D/E Connector Radiant: pump shall run whenever there is a call for radiant heat in the Connector.
e. P-5 D/E Garage Unit Heaters & F Snowmelt: pump shall run whenever there is a call for Garage Heat or a call for
F Snowmelt.
f. RP-1 Domestic Hot Water Recirculation Pump (Building D): pump shall be controlled by timer & aquastat.
g. RP-2 Domestic Hot Water Recirculation Pump (Building E): pump shall be controlled by timer & aquastat.
General
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. Do not scale drawings. Verify dimensions in field prior to commencement of work.
4. 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.
5. 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.
6. Work shall be performed in a workmanlike manner to the satisfaction of the Architect & the Engineer.
7. 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.
8. Provide record drawings to architect. Drawings shall include all addendum items, change orders, alterations,
re-routings, etc.
9. 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.
10. Systems shall be tested for proper operation. If tests show work is defective, Contractor shall make corrections
necessary at no cost to Owner.
11. It is the Contractors' and manufacturers' responsibility to assure themselves that the code authorities will approve
any product to be installed on the project.
12. Systems shall be professionally labeled. Piping shall be labeled with color coded commercial grade labels
indicating piping service and flow direction. Equipment, fans, pumps, valves, switches and controls shall be
labeled with engraved plastic or metal tags and an equipment/valve schedule shall be provided and mounted on the
mechanical room wall. Equipment labels shall follow the same nomenclature as the mechanical drawings.
13. Offset piping, ductwork, etc. as necessary to accommodate structure, beams, columns, and existing equipment.
Electrical
14. Contractor must carefully verify electrical service voltage and phase available before ordering any equipment.
15. 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.
16. The following are to be furnished and wired by EC: disconnect switches, thermal overload switches, manual
operating switches and contactors.
17. 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
18. 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.
19. Provide mechanical demolition required. Refer to architectural demolition drawings for location and extent of
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.
20. 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.
21. Be responsible to field verify existing equipment or ductwork remaining to be reconnected to new or existing
systems. Provide ductwork, piping, controls, diffusers, etc., as required to restore continuity to system(s).
22. All new ductwork, piping, equipment, etc. is shown with dark lineweight. All existing ductwork, piping,
equipment, etc. is shown with light lineweight.
23. All removed piping, ductwork, equipment, etc. are to be disposed of by Contractor unless noted otherwise.
24. All existing support rods and straps now supporting ducts, pipes, air tubing, electrical conduit, etc. that are removed
to allow room for installation of new equipment shall be relocated and reinstalled, or replaced if damaged.
25. 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
26. Insulate all new heating water, snowmelt, domestic cold water, domestic hot water, and domestic hot water
UHFLUFXODWLRQZLWK8/DSSURYHGZKLWHDOOVHUYLFHJODVVILEHUVQDSRQSLSHLQVXODWLRQ´WKLFNRQSLSLQJ
´LQGLDPHWHUDQG´WKLFNRQSLSLQJ!´,QVXODWHILWWLQJVZLWKJODVVILEHUEODQNHWLQVXODWLRQDQGSUHPROGHG
PVC covers.
27. Insulation for all types of piping shall be carried full size through pipe hangers or pipes shall be supported with
vibration clamps.
Piping
28. Heating Water Piping, Domestic Hot, Cold & Recirculation Piping, and Snowmelt Piping inside building -
Non-buried lines, type 'L' copper water tube, wrought copper fittings and no lead solder.
29. All buried snowmelt piping shall be Pre-insulated PEX piping, Urecon or approved equal. Bury minimum 4' deep
and surround with 4" of clean sand.
30. PEX piping shall be supported by continuous cradles supplied by the manufacturer.
31. Condensing Boiler Condensate shall be neutralized via a neutralization basin before discharge into building
drainage system. Condensate piping shall be PVC or other approved material suitable for pH levels of 3.
32. 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.
33. Gas Valves - Lubricated plug valve 175 lb. W.O.G. iron screwed or flanged.
34. 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.
35. Support pipe with rod and clevis or clamps. No pipe tape allowed.
36. Provide expansion joints or loops on all heating water piping runs in excess of 50'.
37. 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.
38. *UDGHDQGYDOYHDOOKHDWLQJZDWHUSLSLQJZLWKô´KRVHHQGYDOYHVWRSHUPLWGUDLQDJHRIWKHV\VWHP9HQWDOOKLJK
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.
Boiler & Water Heater Flue & Combustion Air Piping
39. Flue piping shall be a polypropylene venting system, listed in accordance with ULC-S636, and rated for flue gas
venting systems. Flue shall be Centrotherm Innoflue or APPROVED equal.
40. Combustion air piping shall be PVC, complying with ASTM D1785.
Antifreeze Solutions
41. 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.
42. Fill heating water system with 50% propylene glycol / 50% water solution, by volume, for freeze protection to
)DQGEXUVWSURWHFWLRQWR),QFOXGHFRUURVLRQLQKLELWRUV
Controls
43. Install emergency gas shutoff switch inside mechanical rooms containing boilers & gas-fired water heaters. Switch
SODWHVKDOOEHUHGLQFRORUDQGODEHOHG³*$6%851(5(0(5*(1&<6:,7&+´6ZLWFKVKDOOEHFRPSOLDQWZLWK
Section 1006.8 of the 2012 IMC.
44. See Sequence of Operation for additional control information.
Balancing
45. Water flows must be balanced, and pumps adjusted as required. Submit a written balance report. Balancing
procedures shall be in accordance with NEBB or AABC guidelines for proportional balance. Submit report on
standard NEBB forms.
46. Hydronic measurements shall include circuit setters, all motor amperage, voltage readings, motor RPM, pump
RPM, pump GPM as calculated from the pump curve, inlet and outlet pressures at pumps, and temperature and
pressure drop at all coils.
47. Submit three copies of all submittals in addition to any required by the Contractor. These copies shall be retained
by the Owner, Contractor and Engineer.
8/7/15
08/27/15