HomeMy WebLinkAboutFile Documents.950 Cemetery Ln.0152.2019 (34).ARBK BuGwr ASSOCIATES INC.
1404 Hawk Parkway,#218 - MONTROSE, CO 81401
(970)240-5990- m.burggraaf@bai-eng.biz
March 20, 2018
Ms. Mallory Buck
Kim Raymond Architects, Inc.
418 E. Cooper, Suite 201
Aspen CO 81611
RE: Schematic Narrative
Costanza Remodel-950 Cemetery Lane, Unit 1
Project#8014
Dear Mallory:
The following is intended to provide a written overview of the proposed direction for the mechanical (HVAC
and domestic hot water)design that is associated with our design services proposal for the subject residence.
This is intended to be a working document and we welcome comments and re-direction. Please review this
with the Owner and General Contractor as required.
HVAC systems
- Priorities are
-Comfort(+/-2 degrees of setpoint)
- Low noise(standard to be set by acoustical consultant)
- High quality indoor air(filtered/not stuffy)
- Energy efficiency will be a secondary priority as opposed to the three previously listed. The intent will
be to maintain as high an energy efficiency as possible while not sacrificing the comfort, noise and indoor
air quality requirements previously noted.
-The HVAC system shall be designed to maintain 72F in the winter and 75F in the summer(2015
International Energy Conservation Code). We can design to other temperatures, but will need Owner
direction prior to proceeding. The design shall assume that window coverings are left open.
- Humidification system shall be designed to maintain 28%throughout the residence in the winter.
- Radiant floor heating shall be provided throughout the residence. Radiant floor zones shall be as
follows:
Lower Level
-Family Room
-Guest Master Bedroom I Guest Master Bath
-Bunk room/Bath 1
Main/Entry Level
- Entry/Mudroom
-Living/Dining
-Kitchen
-Powder/Laundry
-Master Bedroom/Master Closet
-Master Bathroom
RECEIVED
04/05/2018
ASPEN
BUILDING DEPARTMENT
March 20, 2018 2
-Separate ventilation systems with supplemental heat, humidification, make-up air, and air filtration
capacity will be provided as follows:
Lower level A heat recovery ventilator(HRV)will provide for supplemental heating and
continuous ventilation in the lower level. Unless specifically directed, the system
will NOT provide for cooling and or humidification on the lower level.
Main Level A single fan coil unit and associated ductwork for cooling two zones as follows:
- Master Bedroom
- Living/Dining/Kitchen -this system will include make-up air for the Living
Room fireplace and the Kitchen range hood.
-Air conditioning/ventilation will typically be supplied from the floors and kickspaces. Grilles and
registers will typically be linear bar grilles(depending on aesthetic considerations).
-Outside air is required by code and practical considerations to make-up the exhaust air at the kitchen
hood, the living room fireplace and to provide for building pressurization. Outside air ventilation for the
residence will be provided through the heat recovery ventilator and fan coil units referenced above.
-A kitchen exhaust hood insert with a roof mounted remote exhaust fan will be specified. The insert will
allow for a custom installation to be designed by others.
-An electronic steam humidifier will be installed at the fan coil unit.
-The fan coil unit shall be provided with minimum MERV(minimum efficiency rating value) 8 pleated
media filters. This filtration level is equivalent to a typical commercial office environment. If so directed,
we can design to a higher level of air filtration. Please note that high levels of air filtration will directly
effect the energy use as more energy is required to filter the air through a finer filter mesh.
- Exhaust systems will typically be based on the use of local ceiling mounted units. A larger ceiling
mounted exhaust fan will be used for the garage with carbon monoxide sensing capability and a manual
override.
-Garage heat will be provided by a ceiling mounted hot water unit heater.
-The boiler(s)are to be installed in the basement utility room. Domestic hot water storage tank(s) -side-
arm -will be installed in the mechanical room with the boilers.
- Environmental Controls
Temperature control will be based on the use of typical wall thermostats. The
thermostats will have capability for remote installation with local wall sensors.
Humidification setpoints shall be controlled at the fan coil unit.
Controls associated with heating and air conditioning equipment(boilers, pumps, fan coil
units, etc)will be conventional low voltage and located in the mechanical room(s). A
central building automation system will NOT be provided.
RECEIVED
04/05/2018
ASPEN
BUILDING DEPARTMENT
March 20, 2018 3 ---
- Environmental Controls (cont.)
- The controls will have an occupied and un-occupied mode to allow the entire residence to
be moved from occupied to un-occupied and back from a single location.
Ventilation system will run continuously during the occupied mode and will cycle
as needed during the un-occupied period.
Space temperatures will be set back(winter) or set up(summer) during the un-
occupied period.
System responsiveness (to a change in thermostat setpoint) is anticipated to be 2 hours
or less during the occupied period and approximately 12 hours during the change from
un-occupied to occupied.
If you, the Owner or the General Contractor have questions or comments regarding any of the above
items, please do not hesitate to call.
Sincerely,
BURGG F AS CIATES INC.
is ur eer
cc: M r , P.E.
Kim Raymond (via email)
RECEIVED
04/05/2018
ASPEN
BUILDING DEPARTMENT