Green Plumbing Green Plumbing Codes and Standards Codes and Standards PanelPanel

ASHRAE 189.1 ASHRAE 189.1 Standard for the Design of Standard for the Design of High Performance Buildings Except Low High Performance Buildings Except Low Rise Residential BuildingsRise Residential Buildings ASHRAE 191 ASHRAE 191 Standard for the Efficient Standard for the Efficient Use of Water in Building, Site and Use of Water in Building, Site and Mechanical Systems Mechanical Systems

Thomas PapeThomas Pape

pape.thomas@gmail.compape.thomas@gmail.com

ANSI consensus processANSI consensus process First serious effort combining both First serious effort combining both

water and energy conservation water and energy conservation Not for low-rise residentialNot for low-rise residential More emphasis on energy than waterMore emphasis on energy than water Popular alternative to LEEDPopular alternative to LEED Engineer specification, not codeEngineer specification, not code Reciprocal equivalency to IgCCReciprocal equivalency to IgCC

ASHRAE 189.1ASHRAE 189.1

ASHRAE SPPC 191ASHRAE SPPC 191

Water Efficiency Only CodeWater Efficiency Only Code Under Development – 1Under Development – 1stst Public review Public review

conductedconducted 11stst Draft written with misunderstood Draft written with misunderstood

direction (me included)direction (me included) Needs major revision to be the intended Needs major revision to be the intended

base code under 189.1 (like 90.1 is for base code under 189.1 (like 90.1 is for energy efficiency)energy efficiency)

Future uncertainFuture uncertain

189.1 Landscape189.1 Landscape

Requires 60% bio-diverse planting Requires 60% bio-diverse planting of native and of native and ““adapted plantsadapted plants”” other than turfgrassother than turfgrass– There is no consensus definition of There is no consensus definition of ““adapted plantsadapted plants””

– Is 40% turf restriction reasonable for Is 40% turf restriction reasonable for all climate zones?all climate zones?

189.1 Irrigation 189.1 Irrigation SystemSystem Hydrozoning to match plants needsHydrozoning to match plants needs Smart controllers only (IA SWAT)Smart controllers only (IA SWAT) Minimal landscape/system design Minimal landscape/system design

requirementsrequirements Irrigation water efficiency affected Irrigation water efficiency affected

by other sections – site design, and by other sections – site design, and heat island mitigation (wet roofs)heat island mitigation (wet roofs)

189.1 Water Closets189.1 Water Closets

1.28 GPF1.28 GPF– Dual flush controversyDual flush controversy

Water Sense (if tank type)Water Sense (if tank type)– Revise to include WS flushometerRevise to include WS flushometer

No exception for remote toiletsNo exception for remote toilets

189.1 Urinals189.1 Urinals

O.5 GFP maximum requirementO.5 GFP maximum requirement

189.1 Public Lavatory 189.1 Public Lavatory FaucetsFaucets 0.5 GPM maximum0.5 GPM maximum Self-closing limited to 0.25 Self-closing limited to 0.25

gallons per cycle gallons per cycle

189.1 Residential 189.1 Residential FaucetsFaucets Bathroom: 1.5 GPM maximumBathroom: 1.5 GPM maximum Kitchen: 2.2 GPM maximumKitchen: 2.2 GPM maximum

– Proposed 1.8 GPM with temporary Proposed 1.8 GPM with temporary override to 2.2 GPMoverride to 2.2 GPM

189.1 Showers189.1 Showers

Residential 2.0 GPM maximumResidential 2.0 GPM maximum Requires at least 2600 inchRequires at least 2600 inch2 2 of of

shower stall floor area per shower stall floor area per showerershowerer– Based on the presumption that law Based on the presumption that law

abiding citizens ought to get twice abiding citizens ought to get twice the shower space of axe murderers.the shower space of axe murderers.

189.1 Clothes Washers189.1 Clothes Washers

Energy Star requiredEnergy Star required Residential: 6.0 maximum WFResidential: 6.0 maximum WF

– Proposal to meet new ES Proposal to meet new ES requirementsrequirements

Coin-op and public access: 7.5 WFCoin-op and public access: 7.5 WF

189.1 Dishwashers189.1 Dishwashers

Energy Star requiredEnergy Star required 5.8 gallon maximum per full 5.8 gallon maximum per full

operating cycle operating cycle – Does it really matter?Does it really matter?

189.1 Single-pass 189.1 Single-pass CoolingCooling ProhibitedProhibited

– What is returned to same source?What is returned to same source?

189.1 Cooling Towers189.1 Cooling Towers

Make-up MetersMake-up Meters Blow-down meters (?)Blow-down meters (?) Conductivity metersConductivity meters Overflow alarmsOverflow alarms Drift < 0.002% (0.005% Drift < 0.002% (0.005%

crossflow)crossflow)

189.1 Condensate 189.1 Condensate RecoveryRecovery Required where:Required where:

– 1% design condition > or = 72F1% design condition > or = 72F– > 65,000 Btu/h> 65,000 Btu/h

189.1 Wet Roofs189.1 Wet Roofs

Potable water use prohibitedPotable water use prohibited Reclaimed water prohibition Reclaimed water prohibition

proposedproposed– Currently no water efficient design Currently no water efficient design

criteriacriteria– The cooling effect of wet roofs is not The cooling effect of wet roofs is not

magic; its latent heat of evaporation magic; its latent heat of evaporation of waterof water

189.1 Metered Water 189.1 Metered Water UseUse That which is measured, is That which is measured, is

improvedimproved Hawthorne EffectHawthorne Effect

189.1 Prescriptive 189.1 Prescriptive OptionOption for Irrigation for Irrigation Non-potable on golf coursesNon-potable on golf courses < 33% potable water for irrigation< 33% potable water for irrigation

189.1 Prescriptive 189.1 Prescriptive OptionOptionCooling TowersCooling Towers A. Make-up water < 200ppm at A. Make-up water < 200ppm at

least 5 COCleast 5 COC B. Make-up water > 200ppm at B. Make-up water > 200ppm at

least 3.5 COCleast 3.5 COC Exception – silica > 150 ppmException – silica > 150 ppm

189.1 Prescriptive – 189.1 Prescriptive – Medical & Lab Medical & Lab FacilitiesFacilities Only use tempering water when Only use tempering water when

discharge exceeds 140Fdischarge exceeds 140F Use digital x-ray and photo Use digital x-ray and photo

equipmentequipment Dry hood scrubbersDry hood scrubbers Dry vacuum pumpsDry vacuum pumps

189.1 Water Features189.1 Water Features

Reclaimed water for fountainsReclaimed water for fountains Make-up water metersMake-up water meters Leak detection devicesLeak detection devices Splash trough drain into poolSplash trough drain into pool

189.1 Performance 189.1 Performance OptionOption Calculations shall be done using Calculations shall be done using ““accepted engineering standardsaccepted engineering standards””

Irrigation:Irrigation:– Potable water at 35% of ETPotable water at 35% of ET– Total water demand based on EtTotal water demand based on Et

Indoor:Indoor:– Equal to or less than prescriptive Equal to or less than prescriptive

pathpath

Future ASHRAE 189.1Future ASHRAE 189.1

Addendum V out for 2Addendum V out for 2ndnd Public Public Review to fix and update the Review to fix and update the StandardStandard

Standard 189.1 needs to catch-up Standard 189.1 needs to catch-up with other green codeswith other green codes