THE BRHEATHE SYSTEM - CCHRCcchrc.org/media/brHEAThe-Manual.pdf · 2019. 12. 10. · panasonic in-line fan fv-40nlf1 (see m1.0 for duct ... i ntak e exhaust ru makeup glycol dhw cold

THE BRHEATHE SYSTEMMECHANICAL HEATING AND VENTILATION

COMPILED BY

©2014 CCHRC

CCHRC | BRHEATHE SYSTEM | HOMEOWNERS MANUAL

P.1©2014 CCHRC

A new prototype system developed by CCHRC locks together heating and ventilation—two crucial elements of life in Alaska.

CCHRC researchers developed the integrated heating and ventilation system, called BrHEAThe, to ensure that new energy efficient homes are getting ample fresh air.

As homes are being built tighter in Alaska to save energy, less air is able to leak into or out of the building, so things like water vapor and chemicals generated from cooking or off-gassing furniture can be trapped inside. Without ventilation, they can build up to harmful levels for both humans and buildings.

Some Alaska homeowners are wary of mechanical ventilation, such as fans or heat recovery ventilators (HRVs), because they use electricity and replace heated air with cooler air. As a result, some people turn off or disable their ventilation systems.

The BrHEAThe system marries heating and ventilation so that incoming air is always hot and fresh.

The following pages outline the various pieces and components of the BrHEAThe system. The intent of this booklet is to provide quick reference information for homeowners.

INTRODUCTION

[Photo of the mechanical room in an integrated truss home - Galena 2014]

[HRV (left) and Coil Filter box (right) - Galena 2014]

CCHRC | BRHEATHE SYSTEM | HOMEOWNERS MANUAL CCHRC | BRHEATHE SYSTEM | HOMEOWNERS MANUAL

P.2 P.3©2014 CCHRC ©2014 CCHRC

brHEAThe 2.2 SYSTEM DIAGRAM OCT 2014

* CIRCULATING PUMP

BLOWER FAN

RECIRC AIR

BACKDRAFT DAMPER

KEY

BOILER

HRV

EXCHANGER

FILTER BOX

HEAT

TANK

AIRTO ROOMS

GLYCOLLOOPS

DOMESTICHOT WATER

AIRINTAKE

WATERFROM SERVICE

WASHER

SHOWER

FAUCET

SINK

H2O

SPACE HEATING

BRHEATHE SYSTEM SKETCH



1000 FAIRBANKS STREETP.O. BOX 82489FAIRBANKS, AK 99708-2489(907) 457-3454www.cchrc.org

SHEET Revision/IssueNo.

Date

OF

INTEGRATED TRUSSTHREE BEDROOM

PROJECT:

ISSUEDAPRIL 2014CONSTRUCTION DOCUMENTS

DESIGNED BY:

DRAWN BY:

CDCCHRC

M1.0

23total

ME

CH

AN

ICA

L PLA

N

CONSTRUCTIO

NDO

CUMENTS

GENERAL NO

TES:

1" @ 100%

1" @ 50%

SCALE CHECK

1!CD_REV.!

3/17/142!

CD_FIN.!3/27/14

3!S.PANEL!

4/09/14!

C C

B

AB

03

FRE

EZE

R

DH

W

C

01

0302

0403

03

3'-0" MIN

BO

ILER

FUTU

RE

W/D

AC

CE

SS

HATC

H

KITC

HE

N M

AK

E U

P AIR

INTA

KE

RE

F 2 | M1.0

WATE

R FILL

WATE

RO

VE

RFLO

W1

DR

YE

R E

XH

AU

ST

HR

V E

XH

AU

ST

TEK

MA

R C

ON

TRO

L

HR

V C

ON

TRO

L

300 CFM

INLIN

E FA

N

HR

V IN

TAK

E

230 IN.S

Q.

(OR

EQ

UIV.)

FRE

E A

RE

A

OU

TSID

E M

AK

EU

P AIR

FOR

CO

MB

US

TION

AIR

SE

ALE

D C

OM

BU

STIO

N K

ITM

FR S

PE

CIFIC

TO S

TOV

E(TH

RO

UG

H FLO

OR

KIT P

RE

FER

RE

D)

WO

OD

STO

VE

BATH

EX

HA

US

T

RA

NG

EH

OO

DE

XH

AU

ST

NO

TE2

FILTER

BO

X&

HE

ATE

XC

HN

GR

S

SR

S

S

R

MU

S

6"

8"

6"

MU

4"

6-6-6 y

FILTER

BO

X&

HE

ATE

XC

HN

GR

HR

V

6"

4"

8"

6"

6"

8-6-6 y

8-8-6 y

6"R

6-6-6 y

6"

8"8"

MECHANICAL KEY

EX

HA

US

T

INTA

KE

RIG

ID D

UC

T

FLEX

DU

CT

FAN

HO

OD

VE

NT

6" RIG

ID O

VAL D

UC

TS

TAC

K IN

WA

LL

MA

KE

UP A

IR

RIG

ID P

IPE

WY

E

RE

TUR

N A

IR

SU

PP

LY AIR

8-6-6

6-6-6

WATE

R P

IPE

(FOR

INTE

RN

AL

300 GA

LLON

TAN

K)

MURS

THR

OU

GH

FLOO

R PA

SS

IVE

MA

KE

UP A

IR(TO

EN

TER

THR

OU

GH

FLOO

R A

ND

UP IN

TOW

ALL, E

XITIN

G B

EH

IND

RE

FRIG

ER

ATOR

)

INS

ULATE

D O

VAL

DU

CT IN

WA

LL

SC

RE

EN

ED

VE

NT C

OV

ER

INS

ULATE

DR

OU

ND

DU

CT

RO

UN

D-TO

-OVA

L STR

AIG

HT B

OO

T

RE

FRID

GE

RATO

R

~ 5'-0"

SC

ALE

: 3/8" = 1'-0"1

ME

CH

AN

ICA

L PLA

N0

2'4'

6'

2M

AK

E U

P AIR

AX

ON

1) FOR

HO

US

ES

WITH

INTE

RIO

R W

ATER

TAN

KC

ON

SU

LT WITH

WATE

RD

ELIV

ER

Y CO

MPA

NY FO

RP

RE

FER

RE

D LO

CATIO

N O

F FILLLIN

ES

ETC

. RO

UTE

OV

ER

FLOW

SO

WATE

R S

PILLS

OFF D

EC

KTO

AVO

ID IC

E B

UILD

UP O

ND

EC

K. W

RA

P PIP

E W

ITH H

EAT

TAP

E A

ND

INS

ULATIO

N2) E

XH

AU

ST FA

N W

/H

UM

IDIS

TAT CO

NTR

OL

IMC

2006 CO

DE N

OTES:

501.2.1:H

RV EXH

AU

ST - MIN

3'-0"S

EPA

RATIO

N FR

OM

OP

ER

AB

LEW

IND

OW

S, M

IN 10'-0" FR

OM

ME

CH

AN

ICA

L INTA

KE

S

504.4:D

RYER A

ND

RA

NG

E HO

OD

EXHA

UST - M

IN 10'-0" FR

OM

ME

CH

INTA

KE

S

N

GEN

ERA

L NO

TES:01.

Exhaust and intake hoods should be at least 18’ above ground or above snow

drift height.02.

Locate supply air registers approximately 12” from

floor unless otherwise noted.

03. R

eturn air grilles in kitchen and bathroom shall be located in ceilings. R

eturn air grille in

mechanical room

may tee off return air ducting.

04. Ventilation requirem

ents:

a. C

lose all exterior doors and window

s.

b. B

alance HR

V per m

anufacturer’s instructions.

c. W

ith inline duct fan OFF and H

RV

ON

at HIG

HE

ST airflow

setting (Speed R

ange 1 -

see m

anufacturer’s installation guide) and at MA

XIM

UM

speed:

i. E

nsure supply airflow is at least 100 C

FM (regardless of w

hether the HR

V is in

“ventilate” or “recirculate” m

odes)

ii. A

djust return air grilles in bathroom and kitchen to ≥40 C

FM each.

iii.

Adjust return air grille in m

echanical room to ≥18 C

FM

iv. A

djust supply air diffusers/louvers to ≥18 CFM

d. R

e-balance HR

V per m

anufacturer’s instructions.

e. E

nsure HR

V fan speed is on Speed R

ange 1. (see manufacturer’s installation guide)

05. P

ut attic access (at least 30” x 22”) in mechanical room

to access inline fan.06.

Install grille in mechanical room

ceiling to allow airflow

between attic and m

echanical room.

07. A

ll ducting in attic shall be insulated with m

inimum

R-4 insulation

08. K

itchen makeup air: B

ring insulated duct up through floor assembly into w

all behind refrig. (2 | M1.0)

09. Locate H

RV

boost switch in bathroom

.10.

Locate HR

V m

ain controller in central living area.11.

Flex Duct Installation

a.

All flex duct shall be installed fully extended: D

O N

OT install in the com

pressed state

or use excess lengths (using m

ore than necessary to get from A to B

, and leaving the

excess curling around).

b.

Avoid bedding ducts across sharp corners!or incidental contact with m

etal fixtures pipes

or conduits. R

adius at centerline shall be no less than one duct diameter.

c.

Requires support at no m

ore than five foot intervals.12.

Install cold air trap in:

a.

Mechanical room

outside make up air.

13. A

ll exhaust hoods shall have a back draft damper (unless specified otherw

ise).

The brHEAThe system contains a number of filters. Ⓐ HRV filters; clean with water monthlyⒷ MERV 8 filter; replace every 3-4 monthsⒸ MERV 13 filter; replace every 3-4 months

(refer to the training video and back cover for additional info)

MECHANICAL ROOM AIR FILTERS KITCHEN MAKE-UP AIR

ⒶⒶⒷ Ⓒ

REPLACE

in 6MONTHS

REPLACE

in 6

MERV13MERV8

HRV COREMONTHS

FILTER LIST AND OPERATION

AIR FLOW AIR FLOW



MECHANICAL SYSTEM PLAN

1000 F

AIR

BA

NK

S S

TR

EE

T

P.O

. B

OX

82489

FA

IRB

AN

KS

, A

K 9

9708-2

489

(907)

457-3

454

ww

w.c

chrc

.org

SHEET

Revision/IssueNo. Date

OF

INT

EG

RA

TE

D T

RU

SS

TH

RE

E B

ED

RO

OM

PR

OJE

CT:

ISS

UE

D

JU

LY

2014

CO

NS

TR

UC

TIO

N D

OC

UM

EN

TS

DESIGNED BY:

DRAWN BY: CD

CCHRC

M1.023 total

MECHANICAL PLAN

CONSTRUCTIONDOCUMENTS

GENERAL NOTES:

1" @ 100%

1" @ 50%SCALE CHECK

1 CD_REV. 3/17/142 CD_FIN. 3/27/143 S.PANEL 4/09/14

FREEZER

C

C

B

AB

03

DHW

C

01

03 02

04

03

03

3'-0

" M

IN

BOILER

FUTUREW/D

ACCESS

HATCH

KITCHEN MAKE UP AIR INTAKEREF 2 | M1.0

WATER FILL

WATEROVERFLOW1

DRYER EXHAUST

HRV EXHAUST

TEKMAR CONTROL

HRV CONTROL

300 CFMINLINE FAN

HRV INTAKE

OUTSIDE MAKEUP AIRFOR COMBUSTION AIR

SEALED COMBUSTION KITMFR SPECIFIC TO STOVE

(THROUGH FLOOR KIT PREFERRED)

WOOD STOVE

BATH EXHAUST

RANGEHOODEXHAUST

BATH FAN

FILTER BOX

& HEATEXCHNGR

S

S

R

S

S

R

MU

S

6"

6"

MU

4"

FILTER BOX

& HEATEXCHNGR

HRV

R

INTERNAL WATER TANK(IF EQUIPPED)

MECHANICAL KEY

EXHAUST

INTAKE

RIGID DUCT

FLEX DUCT

MAKE UP AIRRETURN AIR

SUPPLY AIR

MUR

S

1) FOR HOUSES WITHINTERIOR WATER TANKCONSULT WITH WATERDELIVERY COMPANY FORPREFERRED LOCATION OF FILLLINES ETC. ROUTE OVERFLOWSO WATER SPILLS OFF DECKTO AVOID ICE BUILDUP ONDECK. WRAP PIPE WITH HEATTAPE AND INSULATION2) EXHAUST FAN W/HUMIDISTAT CONTROL

IMC 2006 CODE NOTES:501.2.1:

HRV EXHAUST - MIN 3'-0"SEPARATION FROM OPERABLEWINDOWS, MIN 10'-0" FROMMECHANICAL INTAKES

504.4:

DRYER AND RANGE HOODEXHAUST - MIN 10'-0" FROM MECHINTAKES

Plans reference the Integrated Truss Homes built in Galena in 2014; deviations may exist



1000 F

AIR

BA

NK

S S

TR

EE

T

P.O

. B

OX

82489

FA

IRB

AN

KS

, A

K 9

9708-2

489

(907)

457-3

454

ww

w.c

chrc

.org

SHEET

Revision/IssueNo. Date

OF

INT

EG

RA

TE

D T

RU

SS

TH

RE

E B

ED

RO

OM

PR

OJE

CT:

ISS

UE

D

JU

LY

2014

CO

NS

TR

UC

TIO

N D

OC

UM

EN

TS

DESIGNED BY:

DRAWN BY: CD

CCHRC

M1.124 total

MECHANICALSYSTEM

CONSTRUCTIONDOCUMENTS

GENERAL NOTES:

1" @ 100%

1" @ 50%SCALE CHECK

1 CD_REV. 3/17/142 CD_FIN. 3/27/143 S.PANEL 4/09/14

PANASONIC IN-LINEFAN FV-40NLF1(SEE M1.0 FORDUCT SIZING)

HEAT EXCHANGERTEMPERATURE SENSOR

FILTERS

AIR SEPARATOR

EXPANSIONTANK

S

THERMALEXPANSION TANK

BURNHAMLE BOILER

VENMAR 1.5EKO HRV

INTAKE

EXHAUST

RETURN

MAKEUPGLYCOL

DHW

COLD WATER

ST5

POPOFF VALVE

HOT WATERWATERMAKER

TACO ZVCCONTROLLER

SUPPLY AIR

VENMARALTITUDE

MAIN CONTROL

FILTER COIL BOX

8" RETURNAIR

6" TEE +BACKDRAFT

DAMPER

AQUASTAT CONTROLFOR ZONE VALVE

TEKMAR D511CONTROLLER

STRAP-ON AQUASTAT

SUPPLY

BRHEATHE SYSTEM SCHEMATIC


P.10 P.11©2014 CCHRC ©2014 CCHRC

Plans reference the Integrated Truss Homes built in Galena in 2014; deviations may exist

Tekmar Programmable Thermostat 521

Heat R C Com S1 S2 6 | 7 1 2 3 4 5 D

uct Sensor

The ZVC403 zone valve control is used to control power to the circulator pump and the inline fan based on a call from the thermostat and aquastat..

Boiler Controls

(Aquastat Relay

Connection)

T | T

JUMPER 1 & 7

Indirect Water

Heater Aquastat

T | T

JUMPER 3 & 4

2 WIRE ZONE

VALVE (NO END SWITCH)

MUST USE

JUMPER

JUMPER 3 & 4

DHW

Zone Valve (ZV1)

2 WIRE ZONE

VALVE (NO END SWITCH)

MUST USE

JUMPER

Space

Heating Zone Valve

(ZV2)

Grundfos Alpha Pump recommended

Hot

Neutral

Recommended Control Wiring Diagram for TACO ZVC-‐403

Domestic Hot Water (DHW) Order of Operation

1. Aquastat on indirect fired water heater calls for heat. 2. “Zone 1” is activated on ZVC 403

a. DHW Zone Valve (ZV1) allows flow to heating coil in water tank.

b. Boiler senses call for heat via isolated end switch.

3. Pump end switch is activated and 120VAC power is sent to pump to circulate fluid through hydronic system.

4. Hot water is sent to heating coil in water tank until water

temperature is satisfied.

Space Heating Order of Operation

1. Tekmar thermostat calls for heat.

a. Calls for heat to satisfy room temperature OR b. Calls for heat to ensure minimum duct air

temperature (so no cold air blows into bedrooms

when HRV is ventilating) 2. “Zone 3” is activated on ZVC 403

a. Space Heating Zone Valve (ZV2) allows flow to heating

coil in filter box. b. Boiler senses call for heat via isolated end switch.

3. Pump end switch is activated and 120VAC power is sent to

pump to circulate fluid through hydronic system. 4. The strap-‐on aquastat senses heat flow to the heat exchanger

and once the heat reaches approx 140°F, 120VAC power is

sent to in-‐line fan to circulate air through duct system. 5. Hot water is sent to heating coil in filter box assembly until

temperature is satisfied. b.

Bruno Grunau CCHRC 907-‐457-‐3454 [email protected] Rev A -‐ 7/21/14

In-‐Line Fan

Strap-‐On Aquastat

(Relay)

Strapped to heat exchanger coil

Connection)

Neutral

Hot

BRHEATHE SYSTEM WIRING


P.12 P.13©2014 CCHRC ©2014 CCHRC

01 Venmar Altitude ControllerThis controls the operation and functionality of the HRV. it can be programmed for a multitude of settings.

01 Venmar EKO 1.5The Heat Recovery Ventilator exchanges, cleans, preheats, recirculates interior air, and provides heat exchange on incoming exterior fresh air.

01 HRV 3-Button ControllerControls the HRV by overriding the main Altitude controller to exhaust interior air as quickly as possible. It is mostly used to remove smells from the bathroom and kitchen.

02 Tekmar ControllerA thermostat that tells the boiler to provide heat.

03 Filter coil boxThe box in the mechanical room that cleans (filters) the air and then heats the air (with the heating coil/exchanger).

03 HRV FiltersThe two filters inside the HRV that should be cleaned regularly. They can be washed in the sink.

04 In-Line FanA booster fan that delivers heated air to the living space.

BRHEATHE EQUIPMENT LIST

05 Burnham LE BoilerThis provides space heating and produces the hot line of the domestic hot water (DHW) system.

06 Circulator PumpA small pump that moves the heated fluid from the boiler to the heat exchanger in the duct or to the domestic hot water tank.

07 Taco Zone Valve ControllerControls the movement of hot fluid between appliances, does all the deep thinking and brain work.

08 Axiom Glycol FeederA reservoir of fluid for the boiler. It is to make sure the boiler heat loop does not run out of fluid to heat the house.

Additional detailed information, and product manuals can be found on the enclosed CCHRC USB thumb drive


P.14 P.15©2014 CCHRC ©2014 CCHRC

AquastatAquastats control water temperature in boilers and other hydronic heating systems. They are usually set to have a high limit temperature and a low limit temperature. If the heating appliance causes the water to reach the high limit temperature, they will shut off the heating appliance. Also, if water reaches the low limit temperature, they will cause the heating appliance to fire to raise the water temperature.

Backdraft DamperA damper refers to a device that regulates airflow. Dampers are often located in flues and chimneys. They can be closed when the heating appliance is not in use to prevent heated air from escaping up the chimney, and opened when the heating appliance is firing, to allow exhaust gases to exit. A backdraft damper is a damper that only allows flow in one direction, preventing combustion gases from flowing back into the house.

Bowtie DamperA bowtie damper is a damper that regulates how much air is provided to or removed from a space. It sits behind the diffusers and is locked into position so that the air delivered and removed from the space is balanced.

BoilerA boiler is a heating appliance that produces heated water that is delivered to a house by a hydronic (piped) distribution system. A boiler can use electricity or combustion from burning fuel oil, natural gas, or wood to heat water.

BrHEAThe systemA combined heating and ventilation system developed at the Cold Climate Housing Research Center. The design further marries domestic hot water to using a single heat source (boiler).

CFM - Cubic Feet per MinuteThe volume of air that flows through the ducts.

Circulator pumpA small pump that moves heated liquid from the boiler to the heat exchanger in the duct.

Controller A stand-alone device that interfaces with a peripheral device. Within the

GLOSSARY of TERMS BrHEAThe operations, this controller is a link between two parts of the system (the thermostat/sensor data, and the boiler/zone valves) that manages the operation of the boiler/zone valves.

DHW - Domestic Hot WaterDomestic hot water refers to the hot water used by a household that is produced by a domestic hot water heating appliance. It includes hot water needed for showers, faucets, dishwashers, clothes washers and other appliances.

Diffuser/GrilleA grille, or register, is a vent through which hot air from a forced air distribution system is delivered to a room or returned to the heating appliance. Technically, registers contain dampers and grilles do not, but the terms are often used interchangeably.

DuctThe tube, or conduit, that air is transported through. Ducts are used in distribution systems to deliver heated air. They can be made of metal, fiberglass or a material consisting of wire and plastic.

Duct SensorA device in the duct that tells the boiler if the incoming air is too cold.

ExhaustExhaust refers to gases that result from combustion. Typically exhaust contains mostly nitrogen and carbon dioxide, although proportions will depend on the type of fuel burned. Exhaust also contains a small proportion of toxic gases and should be vented outside. Incomplete combustion will result in higher concentrations of toxic gases such as carbon monoxide (CO).

Fresh AirAir from outside of the house which is brought into the house as stale air is removed from the house

GlycolA liquid that is mixed with water and heated in the boiler. It is used to keep the water heating the duct from freezing when the incoming air is too cold.

Heating FuelDiesel fuel that burns in the boiler to supply heat for the house.

Heat ExchangerA unit in the duct to that house that has warm fluid from the boiler flowing through it. The warm fluid heats the air that flows across the exchanger.


P.16 P.17©2014 CCHRC ©2014 CCHRC

HRV Heat Recovery VentilatorAn energy recovery ventilation system using equipment known as a heat recovery ventilator which employs a counter-flow heat exchanger between the inbound and outbound air flow. HRV provides fresh air and improved climate control, while also saving energy by reducing heating (and cooling) requirements. HRV Core The flat plate heat exchanger that is in the HRV. It uses the exhaust air to heat the incoming fresh air while not allowing the air to mix. It should be cleaned about every 6 months.

In-line fanA fan in the duct after the heat exchanger that boosts the heat delivery to the living space.

Make-up AirAir that comes into the house from behind the refrigerator or in the mechanical room if air is required. Make-up air will be drawn into the house if the bathroom fan or kitchen range fan is running. It is to protect the occupants of the house from pulling air from the woodstove or boiler. They should never be blocked off.

Passive Something that happens without action on the part of the homeowner. The make-up air system is passive.

Recirculate (HRV mode)The HRV will stop bringing in fresh outside air and will just move the stale air around the house until the mode is changed.

Return AirAir that is returning to the HRV from the house. It is stale air that will be removed from the house and replaced with fresh air.

SensorA device that tells the heating system what the temperature is so that the heating system should supply heat.

Space HeatingHeat to a small enclosed space.

Stale Air Air inside the house that contains moisture, smells and other airborne particulates that are produced by house occupants.

Supply AirWarm fresh air that is being delivered to the living space.

Ventilate (HRV mode)The HRV will bring fresh air from outside the house in and remove stale air from the inside of the house.

ZoneAn area of the house that has a separate thermostat. The house is a zone and the domestic hot water is a separate zone.

Zone ValveA valve that directs that heated fluid from the boiler to the zone which needs the heat.

© 2014 | questions or comments? contact [email protected] Fairbanks St | PO BOX 82489 | Fairbanks, AK 99708

www.cchrc.org | 907 457-3454

HRV Filters (Clean and wash)

1 time per MONTH

HRV Core(Clean and wash)

1 time per 6 MONTHS

M-8 and M-13 FILTERS(Check/replace the filters in the heat exchanger housing as needed)

1 time per 3-4 MONTHS

Glycol Reservoir (Check the reservoir periodically to make sure that a sufficient amount of liquid is in it. Fluid level should be ABOVE the MIN. line )

REGULAR INSPECTION

BOILER SERVICING(Technician maintenance and tune up)

1 time per YEAR

MAINTENANCE SCHEDULE

Documents

THE BRHEATHE SYSTEM - CCHRCcchrc.org/media/brHEAThe-Manual.pdf · 2019. 12. 10. · panasonic in-line fan fv-40nlf1 (see m1.0 for duct ... i ntak e exhaust ru makeup glycol dhw cold