20070122142455.pdfor Eao City of Edmonds
=CJS PLAN REVIEW COMMENTS
BUILDING DIVISION
Fst. g9° (425) 771-0220
DATE: January 22, 2007
TO: Bruce Smith
FAX: 425-742-5718
FROM: Ann Bullis, Assistant Building Official
RE: Plan Check #2006-1386
Project: Greenberg Mechanical/HVAC
Project Address: 155 3`d Ave S
During review of the plans/documents for the above noted project, it was found that the following
information, clarifications or changes are needed. Provide written responses to each comment and where
changes can be found on the plans. Submit 2 sets of revised plans/documents to Marie Harrison, Permit
Coordinator.
1. The mechanical plans as drawn are difficult to read. Attached is the mechanical handout which contains
the submittal requirements. Please revise the plans so a complete review can be done.
2. Basement floor plan is missing from this application and must be included. The approved architectural
plans for this building show a mechanical room with boiler and water heater on the lower floor next to
the trash enclosure, with venting though the large shaft at the center of the building. If this will no
longer be used as a mechanical room and the shaft will be altered, submit revised architectural and
mechanical plans. The architectural revision must be stamped and signed by the Engineer of Record for
this project.
3. Provide elevator equipment ventilation system (supply and exhaust) on the basement floor plan. Show
duct path(s) to the exterior of the building.
4. Garage mechanical ventilation must be included in this permit. The 1 -hour fire rated garage exhaust
shaft is shown on the approved architectural plans. Provide manufacturer's information for the exhaust
fan. The approved architectural plans note the fan size as 6200 cfm. Verify that the shaft size will
accommodate the proposed exhaust fan. If the shaft needs to be altered to accommodate the exhaust
system, provide revised architectural and mechanical plans. The architectural revision must be stamped
and signed by the Engineer of Record for this project.
5. Complete the attached State Energy Code forms for Mechanical and return for review.
6. This is a Type VA (1 -hour fire rated) building. Where ducts, exhaust fans, etc. penetrate the 1 -hour fire
rated assemblies, show how the rating will be maintained, such as with lined joist bays, vertical shafts,
soffits, etc., and provide details.
7. Mechanical ventilation (supply and return) must be provided to each room/space on the 1St floor (office
floor). Clearly show this on the plans.
S. Complete the enclosed ventilation worksheets for the two dwelling units.
9. The approved plans for this building do not show a suspended ceiling system on any of the floors. If
there will be a suspended ceiling system, provide revised architectural and mechanical plans, including
seismic anchoring details, and seismic anchoring details for office partitions. The architectural revision
must be stamped and signed by the Engineer of Record for this project.
10. Provide listed and tested fire stopping assemblies for each type/size of penetration (ducts, gas piping,
etc.).
11. The restrooms (both floors) must each have minimum 50 cfm exhaust fans.
12. Ducts not permitted to pass through the 1 -hour fire rated stair enclosures, nor the 1 -hour rated
assemblies that enclose the stairway. Provide details showing how ducts will be run at the stair
enclosure areas without penetrating the 1 -hour fire rated floor, wall, or ceiling assemblies of the
enclosure. IBC 1019.1.2
13. Clearly show how combustion air will be provided to the gas-fired appliances.
14. Provide a roof plan showing location of duct outlets and roof mounted equipment. No penetrations are
permitted within 5 feet of the north and south property lines. See approved architectural roof plans for
location.
15. Show the location(s) of the water heater(s) for the office floor.
16. Will there be roof -mounted equipment? The permit application notes that there will be 4 air
conditioners, but they are not shown on the plans. Also provide manufacturer's information as noted in
the handout.
IT Dimension the distance of exhaust outlets in exterior walls in relation to building openings.
Page 2 of 2
VENTILATION WORKSHEET
SOURCE SPECIFIC VENTILATION: Exhaust fans are required in each kitchen, bathroom,
laundry room, indoor swimming pool, spa, and other room(s) where excess water vapor or cooking
odor is produced. Complete the following table:
Location..
Required CFM
Actual CFM
KITCHEN FAN
100 CFM
BATHROOM #1 FAN
50 CFM
BATHROOM #2 FAN
50 CFM
BATHROOM #3 FAN
50 CFM
LAUNDRY FAN
50 CFM
WHOLE HOUSE VENTILATION: Each dwelling unit shall be equipped with a whole house ventilation
system supplying outdoor air to all habitable rooms and exhausting stale air out via a designated fan.
Complete the following questions and table:
❑ Not applicable for additions less than 500 sq.ft.
SELECT TYPE OF WHOLE HOUSE VENTILATION SYSTEM TO BE USED:
❑ Exhaust fan system with ducted forced air heating system (VIAQ 303.4.1):
• Exhaust fan sized per table below with 24 hour timer.
• Forced air heating system ducted to all habitable rooms.
• Interior doors undercut %2" minimum above floor covering.
❑
Exhaust fan system with fresh air inlets(VIAQ 303.4.1):,
• Exhaust fan sized per table below with 24 hour timer.
• Manual through -wall port or approved window vent.
❑ Inte rated with forced air furnace S stem (VIAQ 303.4.2):
• Outdoor air inlet duct sized per table 3-5 connected to the return air plenum of the
forced air system.
• Volume damper.
❑ Supply fan system (VIAQ 303.4.3):
• Distribute air through the forced -air system ducts or through dedicated ducts to each
habitable space with 24 hour timer.
• Outdoor air must be filtered
• Outdoor air inlet connected to supply or return.
• Back draft and volume dampers.
❑ Heat recovery system (VIAQ 303.4.4)
L:ITEMPIBUILDINGIHANDOLiT ICODESIENERGY B26.DOC
Last Date Revised: 1/22/2007
A WHOLE HOUSE EXHAUST FAN MUST BE PROVIDED FOR EACH DWELLING UNIT.
Floor Area
Bedrooms*
(square feet)
2
or less
3
4
5
6
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
Min.
Max.
<500
50
75
65
98
80
120
95
143
110
165
501-1000
55
83
70
105
85
128
100
150
115
173
1001-1500
60
90
75
113
90
135
105
158
120
180
1501-2000
65
98
80
120
95
143
110
165
125
188
2001-2500
70
105
85
128
100
150
115
173
130
195
2501-3000
75
113
90
135
105
158
120
180
135
203
3001-3500
80
120
95
143
110
165
125
188
140
210
3501-4000
85
128
100
150
115
173
130
195
143
218
4001-5000
95
143
110
165
125
188
140
210
155
233
*for more than 6 bedrooms and/or over 5000 square feet see Table 3-2 Washington State Ventilation and Indoor Air Quality Code.
Total Floor area: Bedrooms: Whole House Fan Size: Location:
✓ WHOLE HOUSE EXHAUST FAN WILL OPERATE INTERMITTENTLY? Yes ❑ No ❑
Both automatic and manual control needed. Automatic control timer shall be set to operate whole house fan for a
minimum of eight hours per day.
WHOLE HOUSE EXHAUST FAN ALSO SERVES AS A BATH OR LAUNDRY FAN? Yes ❑ No ❑
The capacity shall be the larger CFM requirement.
✓ WHOLE HOUSE EXHAUST FAN WILL OPERATE CONTINUOUSLY? Yes ❑ No ❑
Note: Installers shall provide the manufacturer's installation, operating instructions, and a whole
house ventilation system operation description. A label shall be affixed to the whole house timer control
that reads "Whole House Ventilation (see operating instructions). "
L:ITEMPIBUILDINGIHANDOUT ICODESIENERGY B26.DOC
Last Date Revised: 1/22/2007
r�
city of edmonds
development information
Commercial Mechanical/HVAC
Permit Submittal Requirements
PERMIT REQUIRED: A permit is required for the installation of mechanical equipment.
CODES: International Building (IBC) and Mechanical (IMC) Code (2003 Edition)
Uniform Plumbing Code (UPC) (2003 Edition)
International Fuel Gas Code (2003 Edition)
Washington State Energy Code (WSEC) (2003 Edition)
Washington State Ventilation & Indoor Air Quality Code (VIAQ) (2003)
FEE: Based on size and type of equipment or appliance
SUBMITTAL REQUIREMENTS:
1. Two (2) sets of plans must be submitted showing the following:
a) Locations of all heating, ventilation, air conditioning equipment. Provide manufacturer's specifications. Note
fuel source, Btu input/output.
b) Submit applicable State Non -Residential Energy Code compliance forms. Forms can be found on the web at
hLtp://www.neec.net/resources/resources.btml.
c) Show duct smoke alarm (detector) locations.
d) Show or detail how combustion air will be provided.
e) Provide HVAC ductwork layout, including supply diffusers, return air grills, and cfm.
f) Specify duct and pipe insulation R -value, and duct sealing.
g) Label all plenums and provide details showing plenum construction and exposed materials within the plenum.
h) For roof mounted equipment, provide weight of equipment and structural support information, including roof
framing plans, snow and dead loads, etc. Provide building elevations showing visibility of mechanical equipment
and screening and equipment dimensions_
i) Provide construction details for mechanical equipment support structures, including wall and ceiling platforms.
j) Dimension clearances around mechanical equipment.
k) Show condensate waste discharge location.
1) Provide seismic anchoring details.
m) Provide outdoor air calculations per State VIAQ Table 3-4 and show how it will be provided/distributed.
n) Show location and size of all exhaust fans_
o) Provide parking garage ventilation calculations, show location and size of supply and exhaust fans, and location
of exhaust outlet to building openings, supply inlets, property lines, and height above grade.
p) Location and type of all fire/smoke dampers. Provide manufacturer's specifications.
q) Venting path for exhaust ducts, dryer vents, gas appliance vents, B -vents, etc. and show outlet/inlet locations.
r) Locations and construction details of all mechanical shafts, including listed and tested assemblies.
s) Gas piping layout, sizing, pipe material, and support hanger spacing, and number of gas piping outlets.
NOTE: All listed and tested appliances or units shall be installed per the manufacturer's specifications.
NOTE. THE PURPOSE OF THIS HANDOUT IS TO ASSIST THE PUBLIC IN COMPLY]NG WITH DETAILED PERMIT SUBMITTAL RE UIREMENTS_ IT I5
NOT A COMPLETE LIST OF PERMIT OR CODE REQUIREMENTS AND SHOULD NOT BE USED AS A SUBSTITUTE FOR APPLICABLE CAWS AND
REGULATIONS_ IT IS THE RESPONSIBILITY OF THE OWNER/DFSIGN PROFESSIONAL TO REVIEW THE SUBMITTAL FOR COMPLETENESS AND
APPLICABILITY TO OTHER CODES. ONLY COMPLETE APPLICATIONS WILL BE ACCEPTED BY THE CITY FOR REVIEW
L:ATEMPIBUILDINGIHANDOUT ]CODESWOMMECHicodes_DOC
Revised 7104
2004 Washington State Nonresidential
2004 Washington State Nonresidential Energy Code Compliance Forms
Code Compli,
Form
Revised May 2005
Project Info
Project Address
Date
Capacity2 OSA CFM SEER
Btulh Total CFM or Econo? or EER IPLV3 Location
For Building Dept. Use
Applicant Name:
Applicant Address:
Applicant Phone:
Project Description
Briefly describe mechanical
system type and features.
❑ Includes Plans Include documentation requiring compliance with commissioning requirements, Section 1416.
0 Simple System 0 Complex System 0 Systems Analysis
COl>KkpllanCe Option (See Decision Flowchart (over) for qualifications. Use separate MECH-SUM for simple & complex systems.)
Equipment Schedules The following information is required to be incorporated with the mechanical equipment Schedules on the
plans. For projects without plans, fill in the required information below.
Cooling Equipment Schedule
Equip. Capacity, OSA cfm
ID Brand Name' Model No.' Btulh Total CFM or Econo? Input Btuh
Equip.
ID Brand Name' Model No.'
Capacity2 OSA CFM SEER
Btulh Total CFM or Econo? or EER IPLV3 Location
Heating Equipment Schedule
Equip. Capacity, OSA cfm
ID Brand Name' Model No.' Btulh Total CFM or Econo? Input Btuh
Output Btuh
Efficiency4
Fan Equipment Schedule
Equip.
ID Brand Name' Madel No.'
CFM SP' HP/BHP Flow Controls Location of Service
'If available. , As tested according to Table 14-1A through 14-1G. 3 if required. a COP, HSPF, Combustion Efficiency, or AFUE, as
applicable. s Flow control types: variable air volume(VAV), constant volume (CV), or variable speed (VS).
2004 Washington State Nonresidential Energy Code Compliance Form
System Description
See Section 1421 for full description
of Simple System qualifications.
If Heating/Cooling
or Cooling Only:
❑ Constant vol?
❑ Split system?
❑ Air cooled? ❑ Packaged sys? ❑ <20,000 Btuh?
❑ Economizer included?
If Heating Only: ❑ <5000 cfm?
❑ <70% outside air?
Decision Flowchart Use this flowchart to determine if project qualifies for Simple System Option. if not, either the
Complex System or Systems Analysis Options must be used.
START
Heating/Cooling Air Cooled,
System Type or Cooling Only Constant Vol? No
Reference
Heating Only Section 1421 Yes
<5000 Ingle plit Syste
cfm? Yes Package N <-84,000
Yes Unit? Btuh?
No Yes
<70% OSA �—Y
EEcono ool Ca
con d? N <20,000 N
Btuh?
Yes
Yes
Reference
Section 1423
Simple System
Allowed
(section 1420)
/Total Ca
wo econor
<240,000 1
or 10%
Yes
or
Adjacent to
No
<54,000
Use Complex
Systems
(section 1430)
Refer to MECH-COMP Mechanical Complex Systems for assistance in determining which
Complex Systems Complex Systems requirements are applicable to this project.
2004 Washinaton State Nonresidential Fnerav CndP Comnliance Farre
Mechanical - Complex Systems Checklist MECH-COMP
2004 Washington State Nonresidential Energy Code Compliance Forms Revised May 2005
Project Address
Date
The following additional information is necessary to check a mechanical permit application for a complex
For Building Department Use
mechanical system for compliance with the mechanical requirements in the Washington State Nonresidential
Section 1431.1
Energy Code. Use the checklist as a reference for notes added to the mechanical drawings (see the MECH-
Section 1432.2.2 riot
CHK checklist for additional system requirements). This information must be on the plans since this is the
Calculations of Total
official record of the permit Having this information in separate specifications alone is NOT an acceptable
Water Supply
alternative.
On -Site Energy Input
Applicability
Code
Maximum Jacket
& Oupui Required
Location
Building Department
(yes, no, n -a-)
I Section
Component
I Information Required
on Plans
Notes
ADDITIONAL CHECKLIST ITEMS FOR COMPLEX SYSTEMS ONLY
1431.1
Field assem. sys-
Provide calculations
Controls Required
(continued
1432.1
Setback & shut-off
Indicate separate systems or show isolation devices on plans
1432.2.1
Air system reset
Indicate automatic reset
1432-2.2
Hydr. system reset
Indicate automatic reset
Indicate economizer on equipment schedule or provide
1433
Air Economizer
calculations to justify exemption and demonstrate 10% higher
efficiency for equipment with out economizer.
Indicate water economizer and provide calculations if 1433
1433
Water Economizer
Exception 2 is utilized
1434
Separate air sys.
Indicate separate systems on plans
Indicate that simultaneous heating and cooling is prohibited,
1435
Simul. htg. & clg.
unless use of exception is justified
Indicate heat recovery on plans; complete and attach treat
1436
Heat recovery
recovery calculations
1437
Elec. motor effic.
MECH-MOT or Equip. Schedule with hp, rpm, efficiency
1438
Variable flow sys.
Indicate variable flow on fan and pump schedules
1439.1
Kitchen Hoods
Indicate uncooled and unheated make-up air
1439.2
Fume Hoods
Indicate VAV, unheatedluncooled or heat rec. makeup
IT no is circiea ror any question, provtae explanation:
Decision Flowchart Use this flowchart to determine how the requirements of the Complex Systems Option apply
to the project. Refer to the indicated Code sections for more complete information on the
requirements.
Start Here
Section Effir Air System apacity of HW,
Equipment Efficiency��>
lOii Furnace Field -Assembled
N Serving Multiple N Heating System >
Shall Meet Tables5,0008tuh? Equipment? Zones? 00,000 Btuh�
14-1A through 14-1G
Yes
Yes Yes Yes No
1411,1 Intermittent
Ignition Device &
Section 1431.1
Section 1432.2.2 riot
Power Venting or
Calculations of Total
Section 1432.2.1
Water Supply
Damper, 0.75%
On -Site Energy Input
Supply Air Reset '
Temperature Reset
Maximum Jacket
& Oupui Required
Controls Required
Required
Loss
1412.6 Modulating or
Staged Combustion
Controls Required
(continued
onback}
2004 Washington State Nonresidential Enerqv Code Compliance Form
2004 Washington State Nonresidential Energy Code Compliance Forms
0% Air Econ
Provided?
Section 1413
Yes
No
Water Cooled\N_ /EER 10% Bel
/Water Econo? / 0`T than Code
Yes Yes
Total Clg tal Cap. ! Section 1433
Capacity w! N conn <=480,00 N Air -Side Economizer
Water Econo Btuh or 20% of Required
<50D Tons otal Cap.?
Yes Yes
Yes
..J
ipply Air >5,0ZMI Section 1436
cfm & OSA > Ye 50% Effective Heat
. 71 Recovery Required
otor Incl. [ Multi speed Section 1437
gpmt. Covr'd by Motors Must Meet
N Motor in Multi- N
Tbl 14-1A-14- eed system? Efficiencies in
1G? Table 14-4
Yes Yes Yes
Section 1435
ystem or Zone Zone Controls Must
wt Simultaneous Yes Reduce Supply Air
Htg. & Clg.? Quantity Before
ReheatinglRecooling
No
(Application Section 1438
s Variable Ye ans or Pumps >Ye Variable Flow
low? 10 HP? Devices Required
No No Yes
Revised May 2005
Section 1439.2
o Bldg. Fu
One Required:
Exhaust > 15,000
Yes—
a. 50% VAV Exhaust &
cfm?
Make-up
b. 75% Direct Makeup wl
Tempering Only
No
c. Heat Recovery per
1436
Section 1439.1
d. Constant Volume wl
Itchen Exhau
No Heating or
< 50fpm Face Velocity
Hood > 5,000 Ye
Cooling for at least
I
c
No
DONE
50% of Make-up Air
Yes
Yes
Revised May 2005
2004 Washington State Nonresidential Enerov Code Compliance Form
Electric
•
a
•
2004 Washington State Nonresidential Energy Code Compliance Forms
Revised May 2005
Project Address
Date
Complete the following for all design A & B squirrel -cage, T -frame induction permanently wired
polyphase motors from 1 hp to 200 hp having synchronous speeds of 3600, 1800 or 1200 rpm
(unless one of the exceptions below applies).
For Building Department Use
Motor
No. or
Location
HP
Type
(openiclosed)
Description of Application or Use
Min.Notn.
Synch. Full load
Speed Efficiency
Minimum Nominal Full -Load Efficiency
Open Motors
Closed Motors
Exceptions:
Motors in systems designed to use more
than one speed of a multi -speed motor.
2. Motors already included in the efficiency
requirements for HVAC equipment (Tables 14-1
or
14-2)
3. Motors that are an integral part (i.e. not
easily removed and replaced of specialized
process equipment (i.e. equipment which
requires a special motor, such as an explosion -
proof motor).
4. Motors integral to a listed piece of
equipment for which no qualifying motor has
been approved (i.e. if the only U.L. listing for the
equipment is with a less -efficient motor and
there is no energy-efficient motor option).
For motors claiming an exception, list motor
and note which exception applies.
Synchronous1.
Speed (RPM) 3,600 1,800
1,200 3,600 1,800
1,200
HP Efficiency (%) Efficiency (%)
1.0 - 82.5 80.0 75.5 82-5 80.0
1.5 825 84.0 84.0 82.5 84.0 85.5
2.0 84.0 84.0 85.5 84.0 84.0 86.5
3.0 84.0 86.5 86.5 85.5 87.5 87.5
5.0 85.5 87.5 87.5 87.5 87.5 87.5
7.5 87.5 88.5 88.5 88.5 89.5 89.5
10 88.5 89.5 90.2 89.5 89.5 89.5
15 89.5 91.0 90.2 90.2 91.0 90.2
20 90.2 91.0 91.0 90.2 91.0 90.2
25 91.0 91.7 91.7 91.0 92.4 91.7
30 91.0 92.4 92.4 91.0 92.4 91.7
40 91.7 93.0 93.0 91.7 93.0 93.0
50 92.4 93.0 93.0 92.4 93.0 93.0
60 93.0 93.6 93.6 93.0 93.6 93.6
75 93.0 94.1 93.6 93.0 94.1 93.6
100 93.0 944.9 94.1 93.6 94.5 94.1
125 93.6 94.5 94.1 94.5 94.5 94.1
150 93.6 95.0 94.5 94.5 95.0 95.0
200 94.5 95.0 94.5 95.0 95.0 1 95.0
2004 Washington State ]Nonresidential Energy Code Compliance Form
,Mechanical
H L -C H
2004 Washington State Hlonresidential Energy Code compliance Forms Revised May 2005
Project Address
Date
The following information is necessary to check a mechanical permit application for compliance with the mechanical requirements in the
Washington State Nonresidential Energy Code.
Applicability
(yes, no, n.a. )
Code
Section
Component
Information Required
Location
on Plans
Building Department
Notes
HVAC REQUIREMENTS (Sections 1401-1424)
1411
Equipment performance
1411.4
Pkg. elec. htg.& clg.
List heat pumps on schedule
1411.1
Minimum efficiency
Equipment schedule with type, capacity, efficiency
1411.1
Combustion htg.
Indicate intermittent ignition, flueldraft damper & jacket loss
9412
HVAC controls
9412.1
Temperature zones
Indicate locations on plans
1412.2
Deadband control
Indicate 5 degree deadband minimum
1412.3
Humidity control
Indicate humidistat
1412.4
Automatic setback
Indicate thermostat with night setback and 7 diff_ day types
1412.4.1
Dampers
Indicate damper location and auto. controls & max. leakage
1412.4.2
Optimum Start
Indicate optimum start controls
1412.5
Heat pump control
Indicate microprocessor on thermostat schedule
1412.6
Combustion htg.
Indicate modulating or staged control
1412.7
Balancing
Indicate balancing features on plans
1422
Thermostat interlock
Indicate thermostat interlock on plans
1423
Economizers
Equipment schedule
1413
Air economizers
1413.1
Air Econo Operation
Indicate 100% capability on schedule
1413.1
Wtr Econo Operation Indicate 100% capacity at 45 degF db & 40 deg F wb
1413.2
Water Econo Doc
Indicate clg load & water econoe & clg tower performance
1413.3
Integrated operation
Indicate capability for partial cooling
1413.4
Humidification
Indicate direct evap or fog atomization wl air economizer
1414
Ducting systems
1414.1
Duct seating
indicate sealing necessary
1414.2
Duct insulation
Indicate R -value of insulation on duct
1415.1
Piping insulation
Indicate R -value of insulation on piping
1416
Completion Requirements
1416.1 &2 Drawings & Manuals Indicate requirement for record drawings and operation docs.
1416.3.2
Air Balancing
Indicate air system balance requirements
1416.3.3
Hydronic Balancing
Indicate hydronic system balance requirements
1416.4
Commissioning
Indicate requirements for commissioning and prelim. Report
1424
Separate air Sys.
Indicate separate systems on plans
Mechanical
Summary Form
Completed and attached. Equipment schedule with types,
input/output, efficiency, cfm, hp, economizer
SERVICE-WATER-HEATIN-G-AN13
HEATED
POOLS (Sections 1440-1454)
1440
Service water htg.
1441
Elec. water heater
Indicate R-10 insulation under tank
1442
Shut-off controls
Indicate automatic shut-off
1443
Pipe Insulation
Indicate R -value of insulation on piping
1452
Heat Pump COP
Indicate minimum COP of 4.0
1452
Heater Efficiency
Indicate pool heater efficiency
1453
Pool heater controls
indicate switch and 65 degree control
1454
Pool covers
Indicate vapor retardant cover
1454
Pools 90+ degrees
Indicate R-12 pool cover
If "no" is circled for any question, provide explanation:
2004 Washinciton State Nonresidential Enerciv Code Corrioliance Form
echanlcal - General Requ
1411.1 General: Equipment shall have a minimum performance at the
specified rating conditions not less than the values shown in Table 14 -IA
through 14-1G. It a nationally recognized certification program exists for a
product covered in Tables 14-tA through 14-1 G. and it includes provisions
forverification and challenge of equipment efficiency ratings, then the
product shall be listed in the certification program.
Gas-fired and oil -fired forced air furnaces with input ratings > 225,000
Blulh (65 kW) shall also have an intermittent ignition or interrupted device
(nD), and have either mechanical draft (including power venting) or a flue
damper. A vent damper is an acceptable alternative to a flue damper for
furnaces where combustion air is drawn from the conditioned space. All
furnaces with input ratings > 225,000 Btuth (65 kW), including electric
furnaces, that are not located within the conditioned space shall have
jacket losses not exceeding 0.75% of the input rating.
1411.2 Rating Conditions: Cooling equipment shall be rated at ARI test
conditions and procedures when available. Where no applicable
procedures exist, data shall be furnished by the equipment manufacturer.
1411.3 Combination Space and Service Water Heating: For
combination space and service water heaters with a principal function of
providing space heat, the Combined Annual Efficiency (CAE) may be
calculated by using ASHRAE Standard 124-1991. Storage water heaters
used in combination space heat and water heat applications shall have
either an Energy FActor (EF) or a CAE of not less than the following:
EF CAE
< 50 gal storage 0.58 0.71
SO to 70 gal storage 0.57 0.71
>70 gal stora a 0.55 0.70
1411.4 Packaged Electric Heating and Cooling Equipment: Packaged
electric equipment providing both heating and cooling with a total cooling
capacity greater than 20,000 Bluth shall be a heat pump.
Exception: Unstaffed equipment shaelters or cabinets used
solely for personal wireless service facilities.
1412 Controls
1412.1 Temperature Controls: Each system shall be provided with at
least one temperature control device. Each zone shall be controlled by
individual thermostatic controls responding to temperature within the zone.
At a minimum, each floor of a building shall be considered as a separate
za ne.
1412.2 Deadband Controls: When used to control both comfort heating
and cooling, zone thermostatic controls shall be capable of a deadband of
at least 5 degrees F within which the supply of heating and cooling energy
to the zone is shut-off or reduced to a minimum.
Exceptions:
1. Special occupancy, special usage, or code requirements
where deadband controls are not appropriate.
2. Buildings complying with Section 1141-4, if in the proposed
building energy analysis, heating and cooling thermostat
setpoints are set to the same temperature between 70
degrees F and 75 degrees F inclusive, and assumed to be
constant throughout the year.
3. Thermostats that require manual changeover between
heating and cooling modes.
1412.3 Humidity Controls: If a system is equipped with a means for
adding moisture, a humidistat shall be provided.
4412.4 Setback and Shut -Off: HVAC systems shall be equipped with
automatic controls capable of accomplishing a reduction of energy use
through control setback or equipment shutdown during periods of non-use
or alternate use of the spaces served by the system. The automatic
controls shall have a minimum seven-day clock and be capable of being
set for seven different day types per week. .
Exceptions:
1. Systems serving areas which require continuous operation at
the same temperature setpoint.
2. Equipment with full load demands at kW (6,826 Bluth) or
less may be controlled by readily accessible manual oft -hour
controls.
1412.4.1 Dampers: Outside air intakes, exhaust outlets and relief outlets
serving conditioned spaces shall be equipped with dampers which close
automatically when the system is offer upon power failure.
Exceptions:
1. Systems serving areas which require continuous operation.
2. Combustion air intakes.
3. Gravity (nonmotorized) dampers are acceptable in buildings
less than 3 stories in height.
4. Gravity (nonmotorized) dampers are acceptable in exhaust
and relief outlets in the first story and levels below the first
story of buildings three or more stories in height,
1412.4.2 Optimum Start Controls: Heating and cooling systems with
design supply air capacities exceeding 10,000 cfm shall have optimum
start controls. Optimum start controls shall be designed to automatically
adjust the start time of an HVAC system each day to bring the space to
desired occupied temperature levels immediately before scheduled
occupancy. The control algorithm shall, as a minimum, be a function of the
difference between space temperature and occupied setpoint and the
amount of time prior to scheduled occupancy.
1412.5 Heat Pump Controls: Unitary air cooled heat pumps shalf include
microprocessor controls that minimize supplemental heat usage during
start-up, set-up, and defrost conditions. These controls shall anticipate
need for heat and use compression heating as the first stage of heat.
Controls shall indicate when supplemental heating is being used through
visual means (e.g., LED indicators).
1412.6 Combustion Heating Equipment Controls: Combustion heating
equipment with a capacity over 225,000 Bluth shat€ have modulating or
staged combustion control.
Exceptions:
1. Boilers.
2- Radiant Heaters.
Revised May 2005
1412.1 Balancing: Each air supply outlet or air or water termina evice
shall have a means for balancing, including but not limited to, dampers,
temperature and pressure test connections and balancing valves.
1413 Air Economizers
1413.1 Operation: Air economizers shall be of automatically modulating
outside and return air dampers to provide 100 percent of the design supply
air as outside air to reduce or eliminate the need for mechanical cooling.
Water economizers shall be capable of providing the total concurrent
cooling load served by the conneted terminal equipment lacking airside
economizer, at outside air temperatures of 45°F dry-bulbl40*F wet -butte
and below. For this calculation, all factors including solar and internal load
shall be the same as those used for peak load calculations, except for the
outside temperatures.
Exception: Water economizers using air-cooled heat rejection
equipment may use a 35°F dry-bulb outside air temperature for
this calculation. This exception is limited to a maximum of 20 tons
per building.
1413.2 Documentation: Water economizer plans submitted for approval
shall include the following information:
1. Maximum outside air conditions for which economizer is sized to
provide full cooling.
2. Design cooling load to be provided by economizer at this outside
air condition.
3_ Heat rejection and terminal equipment performance data
including model number, Flow rate, capacity, entering and leaving
temperature in full economizer cooling mode.
1413.3 Integrated Operation: Air economizers shall be capable of
providing partial cooling even when additional mechanical cooling is
required to meet the remainder of the cooling load.
Exceptions:
1. Individual, direct expansion units that have a rated capacity
less than 65,000 Bluth and use nonintegrated economizer
controls that preclude simultaneous operation of the
economizer and mechanical cooling.
2. Water-cooled water chillers with waterside economizer.
1413.4 Humidification: If an air economizer is required on a cooling
system for which humidification equipment is 10 be provided to maintain
minimum Indoor humidity levels. then the humidifier shall be of the
adiabatic type (direct evaporative media or tog atomization type).
Exceptions:
1. Health care facilities where WAC 246-320-525 allows only
steam injection humidifiers in ductwork downstream of final
filters. 1412.6 Combustion Heating Equipment Controls:
Combustion heating equipment with a capacity over 225,000
Btulh shall have modulating or staged combustion control.
2. Systems with water economizer
3. 100% outside air systems with no provisions for air
recirculation to the central supply fan.
4. Nonadiabatic humidifiers cumulatively serving no more than
10% of a building's air economizer capacity as measured in
cfm. This refers to the system cfm serving roams with stand
alone or duct mounted humidifiers.
1414 Ducting Systems
1414.1 Sealing: Duct work which is designed to operate at pressures
above 112 inch water column static pressure shall he sealed in accordance
with Standard RS -18. Extent of sealing required is as follows:
1. Static pressure: 112 inch to 2 inches; seal transverse joints.
2. Static pressure: 2 inches to 3 inches; seal all transverse joints
and longitudinal seams.
3. Static pressure: above 3 inches; seal all transverse joints,
longitudinal seams and duct wall penetrations.
Duct tape and other pressure sensitive tape shall not be used as the
primary sealant where ducts are designed to operate at static pressures of
1 inch W .C. or greater.
1414.2 insulation: Ducts and plenums that are constructed and function
as part of the building envelope, by separating interior space from exterior
space, shall meet all applicable requirements of Chapter 13. These
requirements include insulation installation, moisture control, air leakage,
and building envelope insulation levels. Unheated equipment rooms with
combustion air louvers must be isolated from the conditioned space by
insulating interior surfaces to a minimum of R-11 and any exterior
envelope surfaces per Chapter 13. Outside air ducts serving individual
supply air units with less than 2,1300 cfm of total supply air capacity shall be
insulated to a minimum of R-7 and are not considered building envelope.
Other outside airduct runs are considered building envelope until they,
1. connect to the heating or cooling equipment, or
2. are isolated from the exterior with an automatic shut-offdamper
complying with Section 1412.4.1.
Once outside air ducts meet the above listed requirements, any runs
within conditioned space shall comply with Table 14-5 requirements.
Other ducts and plenums shall be thermally insulated per Table 14-5.
Exceptions:
1. Within the HVAC equipment.
2. Exhaust air ducts not subject to condensation.
3. Exposed ductwork within a zone that serves that zone.
1415 Piping Systems
1415.1 insulation: Piping shall be thermally insulated in accordance with
Table 14-6.
Exception: Piping installed within unitary HVAC equipment.
Water pipes outside the conditioned space shall be insulated in
accordance with Washington State Plumbing Code (WAC 51-26)
1416 Completion Requirements (Referto NREC Section 1416 and the
Building Commissioning Guidelines, published by the Building
Commissioning Association, for complete text and guidelines for building
completion and commissioning requirements.)