HomeMy WebLinkAboutCOMCHECK 2 - 04-00146 - Tuscany Place Apartments - Bldg 1 & 2Mechanical Requirements Description
2000 ICC
COMGheck-EZ Software Version 2.4 Release 2a
Data filename: C:1F7rawingslerk\bld#4.cck
The following list provides more detailed description of the requirements in Section 4 of the Mechancal Compliance
Certificate.
Requirements Specific Too. HVAC System 1
Generic Requirements: Must be met by all systems to which the requirement is applicable
1. Design heating and cooling loads for the building must be determined using procedures equivalent to those in
Chapters 27 and 28 of the ASHRAE Handbook of Fundamentals or an approved equivalent calculation
procedure.
2. All equipment and systems must be sized to he no greater than needed to meet calculated loads. A single piece
of equipment providing both heating and cooling must satisfy this pravisivn for one function with the capacity
for the other function as small as passible, within available equipment options.
- Exception: The equipment and/or system capacity may be greater than calculated loads for standby purposes.
Standby equipment must be automatically controlled to be off when the primary equipment and/or system is
operating.
- Exception: Multiple units of the same equipment type whose combined capacities exceed the calculated loan
are allowed if they are provided with controls to sequence operation of the units as the load increases or
decreases.
. Each heating or coolingsystem ser ink singl zone must h. its own_ temperaturedevice.
} Each humidification system must have its own humidity control device.
5. The system or zone control must be a programmable thennostat or other automatic control meeting the
fallowing criteria:a) capable of setting back temperature to 55 degree F daring heating and setting, up to $5
degree F during coolingb} capable of automatically setting back or shutting clown systems during unoccupied
hours using 7 different day sehedulesc) have an accessible 2 -hour occupant overrided) have a battery back-up
capable of mainiainffig programmed settixigs for at least 10 hours without dower.
- Exception.: A setback or shutoff control is not required on thermostats that control systems serving areas that
operate continuously_
Exception: A setback or shutoff control is not requued on systems with total energy demand of 2 kW (6,826
Btu/b) or less.
G. Outdoor -air supply systems with design airflow.rates >3,000 cfm of outdoor air and all exhaust systems must
have dampers that are automatically closed while the equipment is not operate.
7. The system must supply outside ventilation air as required by Chapter 4 of the International Mechanical Code. If
the ventilation system is designed to supply outdoor -air quantities exceeding minimum required levels, the
system must be capable oireducing outdoor -aux flaw to the minimum required levels.
8. Air ducts must be insulted to the following levels:a) Supply and return air ducts for conditioned au located in.
unconditioned spices spaces neither heated nor cooled) must be insulated with a minimum of R-5.
Unconditioned spaces include attics, crawl spaces, unheated basements, and unheated garages.b) Supply and
return au ducts and plenums must be insulated to a minimum of R-8 when located outside the building.c) When
ducts are located wit.hin exterior components (e.g., floors or roofs), minimum R-8 insulation is required only
between the duct and the buildina exterior.
Exception: Duct insulation is not required an ducts located within equipment.
Exception: Duct insulation is not required when the design temperature difference between the interior and
exterior, of the duct. or plenum does not exceed 15 degree F.
9. All joints, longitudinal and transverse seams, and comiections in ductwork must be securely sealed using
weldments; mechanical fasteners with seals, gaskets, or mastics; mesh and mastic sealing systems, or tapes.
Tapes and mastics must be listed and labeled in accordance with UL 181 A or UL 18 1 B.
10. ,Mechanical fasteners and seals, mastics, or gaskets must be used when connecting ducts to fans and other air
distribution equipment, includiag multiple -zone terminal units,
11. All pipes serving space -conditioning systems must be insulated as follows:
Hot water piping for heating systems:
I in. for pipes <=1 112 -in. nominal diameter
2 in. for pipes > 1 1/2- m*. nominal diameter.
A
pt
Chilled water, refrigerant, and brine piping s}rstems.
1 in. insulation for pipes <-1 1/2 -in.. nominal diameter
1 1!2 in. insulation for pipes >1 112 -in. nominal diameter,
steampip:
f 1/2 ininsulation for pipes <—I 1/2 -in. nominal diameter
3 in. insulation for pipes >1. 1/2 -in. nominal diameter.
Exception: PI t is of required for factory -installed ming thin HVAC t.
-
Exception: Pipe M*sulation is not required for ptPing that conveys fluids havmg a design operating
temperature range between 55 degrees F and. r F.
- Exception: P"ipe M*sulafion is not required for Pip that fluids that h not .ted r lei.
throe the use f fossil Belsor electric ower.
-
Exception: Pipe M'sulation 1s not required for runout1 1 not din l n 1 i. diameter4--
between the control valve and HVAC coil.
12. Operation and maintenance documentation must be provided to the owner that includes at least the following
infonnation:a) equipment capacity (input and output) and required maintenance actionsb) equipment operation
and maintenance ;nanualsc) HVAC system control maintenance and calibration information', including wiring
diagrams, schematics, and control sequence descriptivns; desired or field -determined set paints must be
permanently recorded on control drawings, at control devices, or, for digital control systems, in programming
commentsd} complete narrative of how each system is intended to operate.
13. Each supply air outlet or diffuser and each zone terminal device (such as VAV or mixing box.) must have its awn
balancing device. Acceptable balancing devices include adjustable dampers 1ocated within the ductwork,
terminal devices, and supply air diffusers,