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COMcheck Software Version 4.0.7.0
Mechanical Compliance Certificate
Section 1 : Project Information
Energy Code:2014 Oregon Energy Efficiency Specialty Code
Project Title:The Fields Apartments Building 6
Project Type: New Construction
Construction Site: Owner/Agent: Designer/Contractor:
7840 SW Hunziker Rd Otak Architects MFIA,Inc
Tigard,OR 97223 808 SW 3rd Ave,Suite 300 2007 SE Ash St
Portland,OR 97204 Portland,OR 97214
Section 2: General Information
Building Location(for weather data): Tigard,Oregon
Climate Zone: 4c
Section 3: Mechanical Systems List
Quantity System Type&Description
1 RTU-1 (Single Zone):Single Package Heat Pump
Heating Mode:Capacity=60 kBtu/h,
Proposed Efficiency=8.20 HSPF,Required Efficiency=7.70 HSPF
Cooling Mode:Capacity=60 kBtu/h,,Air Economizer
Proposed Efficiency=15.00 SEER,Required Efficiency: 13.00 SEER
Fan System: Unspecified
1 IAC/OAC-1 (Single Zone):
Cooling: 1 each-Split System,Capacity=15 kBtu/h,Air-Cooled Condenser,Unknown Economizer
Proposed Efficiency=18.00 SEER,Required Efficiency: 13.00 SEER
Fan System: Unspecified
56 Water Heater 1:
Electric Storage Water Heater,Capacity:50 gallons
Proposed Efficiency:0.95 EF,Required Efficiency:0.86 EF
Section 4: Requirements Checklist
In the following requirements,blank checkboxes identify requirements that the applicant has not acknowledged as being met.Checkmarks
identify requirements that the applicant acknowledges are met or excepted from compliance. 'Plans reference page/section'identifies where in
the plans/specs the requirement can be verified as being satisfied.
Requirements Specific To: RTU-1 :
1. Equipment meets minimum efficiency: Heat Pump: 7.70 HSPF 13.00 SEER
2. Energy recovery ventilation systems.Individual fan systems that have both a design supply air capacity of 5,000 cfm or greater and a
minimum outside air supply of 70 percent or greater of the design supply air quantity have an energy recovery system.
Exception(s):
LI Where energy recovery systems are prohibited by the International Mechanical Code.
❑ Systems serving spaces that are not cooled and are heated to less than 60°F.
❑ Where more than 60 percent of the outdoor heating energy is provided from site-recovered or site solar energy.
• Type 1 kitchen exhaust hoods.
Li Cooling systems in climates with a 1-percent cooling design wet-bulb temperature less than 64°F(18°C).
❑ Systems requiring dehumidification that employ series-style energy recovery coils wrapped around the cooling coil when the
evaporative coil is located upstream of the exhaust air stream.
Project Title:The Fields Apartments Building 6 Report date: 04/18/18
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• Systems exhausting toxic,flammable,paint exhaust,corrosive fumes,or dust.
r
❑ Laboratory fume hood systems that include qualifying features.
Plans reference page/section: NA
✓ 3. Supply air economizers shall be provided on each cooling system and are capable of providing 100-percent outdoor air,even if
additional mechanical cooling is required to meet the cooling load of the building.Systems provide a means to relieve excess outdoor
air during economizer operation to prevent overpressurizing the building.
Plans reference page/section: MO.01
Requirements Specific To: IAC/OAC-1 :
• 1. Equipment meets minimum efficiency: Split System: 13.00 SEER
• 2. Energy recovery ventilation systems.Individual fan systems that have both a design supply air capacity of 5,000 cfm or greater and a
minimum outside air supply of 70 percent or greater of the design supply air quantity have an energy recovery system.
Exception(s):
❑ Where energy recovery systems are prohibited by the International Mechanical Code.
Systems serving spaces that are not cooled and are heated to less than 60°F.
❑ Where more than 60 percent of the outdoor heating energy is provided from site-recovered or site solar energy.
❑ Type 1 kitchen exhaust hoods.
• Cooling systems in climates with a 1-percent cooling design wet-bulb temperature less than 64°F(18°C).
• Systems requiring dehumidification that employ series-style energy recovery coils wrapped around the cooling coil when the
evaporative coil is located upstream of the exhaust air stream.
❑ Systems exhausting toxic,flammable,paint exhaust,corrosive fumes,or dust.
❑ Laboratory fume hood systems that include qualifying features.
Plans reference page/section: NA
Requirements Specific To: Water Heater 1 :
• 1. Newly purchased equipment meets the efficiency requirements. Electric Water Heater efficiency: 0.86 EF(267 SL,Btu/h(if>12 kW))
✓ 2. Service water-heating equipment performance efficiency.Water heating equipment efficiency has been verified through data furnished
by the manufacturer or through certification under an approved certification program.
• 3. Temperature controls.Service water-heating equipment have controls to allow a setpoint of 110°F for equipment serving dwelling units
and 90°F for equipment serving other occupancies.The outlet temperature of lavatories in public facility rest rooms is limited to 110°F.
Plans reference page/section:
✓ 4. Heat traps.Water-heating equipment not supplied with integral heat traps and serving noncirculating systems have heat traps on the
supply and discharge piping associated with the equipment.
Plans reference page/section:
• 5. Pipe Insulation.For automatic-circulating hot water and externally heated(such as heat trace or impedance heating)systems,piping is
insulated in accordance with the specifications of this section.
D 6. Hot Water System Controls.Systems designed to maintain usage temperatures in hot water pipes is turned off automatically when
the hot water system is not in operation and has demand sensing controls that turn off the system when there is no demand when the
system is operational.A check valve or similar device is installed per requirement details.
Exception(s):
LI Where public health standards require 24 hours per day operation of pumps for uses such as swimming pools,spas and hospitals.
❑ Service water heating systems used to provide multiple functions as part of an integrated system.
❑ Where coupled with water heating capacity less than 100 kBtu/h.
Plans reference page/section: NA
Generic Requirements: Must be met by all systems to which the requirement is applicable:
• 1. Calculation of heating and cooling loads.Design loads are determined in accordance with the procedures described in the
ASHRAE/ACCA Standard 183.Alternatively,design loads have been determined by an approved equivalent computation procedure.
• 2. Cooling equipment economizers:The total capacity of all cooling equipment without economizers must be less than 240 kBtu/h.This
project lists 15 kBtu/h capacity without economizers.That portion of the equipment serving dwelling units and guest rooms is not
included in determining the total capacity of units without economizers.
Plans reference page/section:
Project Title:The Fields Apartments Building 6 Report date: 04/18/18
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3. Equipment and system sizing.Heating and cooling equipment and systems capacity do not exceed the loads calculated in accordance
with Section 503.2.1.
Plans reference page/section: MO.01
• 4. HVAC Equipment Performance Requirements.Reported efficiencies have been tested and rated in accordance with the applicable test
procedure.The efficiency has been verified through certification under an approved certification program or,if no certification program
exists,the equipment efficiency ratings are supported by data furnished by the manufacturer.
• 5. Thermostatic Controls.The supply of heating and cooling energy to each zone is controlled by individual thermostatic controls that
respond to temperature within the zone.
Plans reference page/section: M2.01-M2.04
• 6. Heat pump supplementary heat.Heat pumps having supplementary electric resistance heat have controls that,except during defrost,
prevent supplementary heat operation when the heat pump can meet the heating load.
Plans reference page/section: M0.01
✓ 7. Set point overlap restriction.Where used to control both heating and cooling,zone thermostatic controls provide a temperature range
or deadband of at least 5°F(2.8°C)within which the supply of heating and cooling energy to the zone is capable of being shut off or
reduced to a minimum.
Plans reference page/section:
p 8. Optimum Start Controls.Each HVAC system has controls that vary the start-up time of the system to just meet the temperature set
point at time of occupancy.
Plans reference page/section: NA
✓ 9. Off-hour controls.Each zone is provided with thermostatic setback controls that are controlled by either an automatic time clock or
programmable control system.
• Exception applies:Zones that will be operated continuously.
Plans reference page/section: MO.01
10.Shutoff damper controls.Both outdoor air supply and exhaust are equipped with not less than Class I motorized dampers.
• Exception applies:Gravity dampers shall be permitted for outside air intake or exhaust airflows of 300 cfm or less.
Plans reference page/section: M2.01-M2.04
11.Freeze Protection and Snow melt system controls.Freeze protection systems,such as heat tracing of outdoor piping and heat
exchangers,including self-regulating heat tracing,include automatic controls capable of shutting off the systems when outdoor air
temperatures meet code criteria.
Plans reference page/section: NA
• 12.Separate air distribution systems.Zones with special process temperature requirements and/or humidity requirements are served by
separate air distribution systems from those serving zones requiring only comfort conditions;or shall include supplementary control
provisions so that the primary systems may be specifically controlled for comfort purposes only.
Exception(s):
• [503.2.4.8+]Zones requiring only comfort heating or comfort cooling that are served by a system primarily used for process
temperature and humidity control.
Plans reference page/section: NA
• 13.Humidity control.If a system is equipped with a means to add or remove moisture to maintain specific humidity levels in a zone or
zones,a humidity control device is provided.
Plans reference page/section: NA
• 14.Humidity control.Where a humidity control device exists it is set to prevent the use of fossil fuel or electricity to produce relative
humidity in excess of 30 percent.Where a humidity control device is used for dehumidification,it is set to prevent the use of fossil fuel
or electricity to reduce relative humidity below 60 percent.
Exception(s):
• Hospitals,process needs,archives,museums,critical equipment,and other non-comfort situations with specific humidity
requirements outside this range.
Plans reference page/section: NA
• 15.Humidity control.Where a humidity control device exists it is set to maintain a deadband of at least 10%relative humidity where no
active humidification or dehumidification takes place.
Exception(s):
❑ Heating for dehumidification is provided with heat recovery or heat pumping and the mechanical cooling system efficiency is 10
percent higher than required in section 503.2.3,HVAC equipment performance requirements.
Project Title:The Fields Apartments Building 6 Report date: 04/18/18
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Plans reference page/section: NA
✓ 16.Ventilation.Ventilation,either natural or mechanical,is provided in accordance with Chapter 4 of the International Mechanical Code.
Where mechanical ventilation is provided,the system has the capability to reduce the outdoor air supply to the minimum required by
Chapter 4 of the International Mechanical Code.
Plans reference page/section: MO.01
• 17.Demand controlled ventilation(DCV).DCV is required for spaces larger than 500 ft2 for simple systems and spaces larger than 150 ft2
for multiple zone systems.
Exception(s):
LI Systems with energy recovery complying with Section 503.2.6
▪ Spaces less than 750 ft2(69.7 m2)where an occupancy sensor turns the fan off,closes the ventilation damper,or closes the
zone damper when the space is unoccupied.
Plans reference page/section: NA
o 18.Kitchen hoods.Kitchen makeup is provided as required by the Oregon Mechanical Specialty Code.
Exception(s):
• Where hoods are used to exhaust ventilation air that would otherwise be exhausted by other fan systems.
Li Kitchen exhaust systems that include exhaust air energy recovery complying with section 503.2.6.
Plans reference page/section: NA
• 19.Enclosed parking garage ventilation controls.In Group S-2,enclosed parking garages used for storing or handling automobiles employs
automatic carbon monoxide sensing devices.
Plans reference page/section: NA
✓ 20.Duct and plenum insulation and sealing.All supply and return air ducts and plenums are insulated with the specified insulation.When
located within a building envelope assembly,the duct or plenum is separated from the building exterior or unconditioned or exempt
spaces by a minimum of R-8 insulation.All ducts,air handlers and filter boxes are sealed.Joints and seams comply with Section 603.9
of the International Mechanical Code.
✓ 21.Low-pressure duct systems.All longitudinal and transverse joints,seams and connections of low-pressure supply and return ducts are
securely fastened and sealed with welds,gaskets,mastics(adhesives),mastic-plus-embedded-fabric systems or tapes installed in
accordance with the manufacturer's installation instructions.
Plans reference page/section:
• 22.Medium-pressure duct systems.All ducts and plenums designed to operate medium-pressure are insulated and sealed in accordance
with Section 503.2.7.Pressure classifications specific to the duct system are clearly indicated on the construction documents.
Plans reference page/section: NA
• 23.High-pressure duct systems.Ducts designed to operate at high-pressure are insulated and sealed in accordance with Section 503.2.7.
In addition,ducts and plenums are leak-tested in accordance with the SMACNA HVAC Air Duct Leakage Test Manual.
Plans reference page/section: NA
✓ 24Air system balancing.Each supply air outlet and zone terminal device is equipped with means for air balancing in accordance with the
requirements of IMC 603.17.Discharge dampers intended to modulate airflow are prohibited on constant volume fans and variable
volume fans with motors 10 horsepower.
Plans reference page/section: M2.01-M2.04
✓ 25.Manuals.The construction documents require that an operating and maintenance manual be provided to the building owner by the
mechanical contractor.See long description for specifications.
Plans reference page/section:
• 26.Air System Design and Control.Each HVAC system having a total fan system motor nameplate hp exceeding 5 hp meets the provisions
of Sections 503.2.10.1 through 503.2.10.2.
Plans reference page/section: NA
✓ 27Allowable fan floor horsepower.Each HVAC system at fan system design conditions does not exceed the allowable fan system motor
nameplate hp(Option 1)or fan system bhp(Option 2)as shown and calulated in requirement details.
Plans reference page/section: MO.01
✓ 28.Motor nameplate horsepower.For each fan,the selected fan motor is no larger than the first available motor size greater than the brake
horsepower(bhp).
Plans reference page/section: MO.01
Project Title: The Fields Apartments Building 6 Report date: 04/18/18
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❑ 29.Large Volume Fan Systems.Fan systems over 8,000(7 m3/s)cfm without direct expansion cooling coils that serve single zones reduce
airflow based on space thermostat heating and cooling demand.A two-speed motor or variable frequency drive reduces airflow to a
maximum 60 percent of peak airflow or minimum ventilation air requirement as required by Chapter 4 of the International Mechanical
Code,whichever is greater.
Exception(s):
❑ Systems where the function of the supply air is for purposes other than temperature control,such as maintaining specific humidity
levels or supplying an exhaust system.
Plans reference page/section:NA
❑ 30.AII air-conditioning equipment and air-handling units with direct expansion cooling and a cooling capacity at ARI conditions greater than
or equal to 110,000 Btu/h that serve single zones have their supply fan operation controlled according to code specific requirements.
Exception(s):
❑ Systems where the function of the supply air is for purposes other than temperature control,such as maintaining specific humidity
levels or supplying an exhaust system.
Plans reference page/section: NA
❑ 31.Series fan-powered terminal unit fan motors.Fan motors for series fan-powered terminal units are electronically-commutated motors
and have a minimum motor efficiency of 70 percent when rated in accordance with NEMA Standard MG 1-2006 at full load rating
conditions.
Plans reference page/section:NA
❑ 32.Hot Gas Bypass Limitation.For cooling systems<=240 kBtu/h,maximum hot gas bypass capacity is no more than 50%total cooling
capacity.
Plans reference page/section:NA
✓ 33.All service water heating requirements are listed in requirements section specific to the system.
Section 5: Compliance Statement
Compliance Statement: The proposed mechanical design represented in this document is consistent with the building plans,specifications
and other calculations submitted with this permit application.The proposed mechanical systems have been designed to meet the 2014
Oregon Energy Efficiency Specialty Code requirements in COMcheck Version 4.0.7.0 and to comply with the mandatory requirements in the
Requirements Checklist.
Name Title Signat Date
Section 6: Post Construction Compliance Statement
a HVAC record drawings of the actual installation,system capacities,calibration information,and performance data for each equipment
provided to the owner.
❑ HVAC O&M documents for all mechanical equipment and system provided to the owner by the mechanical contractor.
a Written HVAC balancing and operations report provided to the owner.
The above post construction requirements have been completed.
Principal Mechanical Designer-Name Signature Date
Project Title:The Fields Apartments Building 6 Report date: 04/18/18
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