Fantech SHR Series, VHR Series, SHR 1504, SHR 1505R, SHR 2004 Installation Manual

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Installation Manual

SHR / VHR Series

Heat recovery ventilators

Item #: 405190

Rev Date: 062413

SHR 1504 • SHR 1505R • SHR 2004 • SHR 2005R • SHR 3005R • SHR 3205RD

VHR 1404 • VHR 1405R • VHR 2004 • VHR 2005R

Your ventilation system should be installed in conformance with the appropriate provincial requirements or, in the absence of
such requirements, with the current edition of the National Building Code, and / or ASHRAE’s “Good Engineering Practices”.

United States

10048 Industrial Blvd., Lenexa, KS, 66215
Tel.: [phone] • Fax: [phone]

Canada

50 Kanalflakt Way, Bouctouche, NB, E4S 3M5
Tel.: [phone] • Fax: [phone]

Fantech reserves the right to modify, at any time and without notice, any or all of its products’ features, designs,
components and specifications to maintain their technological leadership position.
Please visit our website www.fantech.net for more detailed technical information.

2

Note Warning/

Important

Information Technical

information

Practical tip

note

PLEASE READ THIS MANUAL BEFORE INSTALLING UNIT

For residential use only

Before installation careful consideration must be given to how this system will operate if connected to
any other piece of mechanical equipment, i.e. a forced air furnace or air handler operating at a higher
static pressure. After installation, the compatibility of the two pieces of equipment must be conrmed by
measuring the airow of the Heat Recovery Ventilator using the balancing procedure found in this manual.
It is always important to assess how the operation of any HRV may interact with vented combustion equipment (i.e.
Gas Furnaces, Oil Furnaces, Wood Stoves, etc.)

Products are designed and manufactured to provide reliable performance, but they are not guaranteed to be 100%
free of defects. Even reliable products will experience occasional failures, and this possibility should be recognized
by the user. If these products are used in a life support ventilation system where failure could result in loss or injury,
the user should provide adequate back-up ventilation, supplementary natural ventilation or failure alarm system, or

acknowledge willingness to accept the risk of such loss or injury.

Your ventilation system should be installed in accordance with the local building code that is in effect, in absence
of such requirements, it is recommenced to check with local authorities having jurisdiction in your area prior to
installing this product.

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Table of content

DETERMINING YOUR AIRFLOW REQUIREMENT ..................................................... 4

INSTALLATION EXAMPLES

Fully dedicated system ................................................................ 5

Partially dedicated system .............................................................. 6

Simplified installation – Option 1...........................................................7

Simplified installation – Option 2...........................................................8

EXTERIOR DUCTING INSTALLATION

Weatherhood Location ................................................................. 9

Installing the ducting to the weatherhood ................................................... 9

Steps for hood installation ...............................................................9

INSTALLING DUCTS TO / FROM INSIDE

Installing ducting to HRV .............................................................. 10

Supply & Exhaust Air Grilles Location...................................................... 10

Ducting fifth port units (R) ..............................................................10

3

HRV INSTALLATION......................................................................... 11

START UP PROCEDURE ......................................................................12

AIRFLOW BALANCING........................................................................12

Adjusting airflow .....................................................................13

Measuring the airflow using station (grid) method .............................................13

LOW VOLTAGE CONTROL .....................................................................14

ELECTRICAL CONNECTIONS....................................................................15

TROUBLESHOOTING .........................................................................17

MAINTENANCE CHART .......................................................................18

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4

Determining your airflow requirement

Room Count Method

1 CFM = 0.47 L/s
1 L/s = 2.13 CFM

ASHRAE method

Room classification Number of rooms CFM (L/s)

Master bedroom x 10 L/s (20 CFM) =

Basement yes or no =

Bedrooms x 5 L/s (10 CFM) =

Living room x 5 L/s (10 CFM) =

Others x 5 L/s (10 CFM) =

Kitchen x 5 L/s (10 CFM) =

Bathroom x 5 L/s (10 CFM) =

Laundry room x 5 L/s (10 CFM) =

Utility room x 5 L/s (10 CFM) =

Total Ventilation Requirements (add last column ) =

if yes add 10 L/s (20 CFM)
if no = 0

CFM Required

Ventilation Air requirements

Floor area Bedrooms

0-1 2-3 4-5 6-7 >7

2

Ft

< 1500 <139 30 14 45 21 60 28 75 35 90 42
1501-3000 139.1-279 45 21 60 28 75 35 90 42 105 50
3001-4500 279.1-418 60 28 75 35 90 45 105 50 120 57
4501-6000 418.1-557 75 35 90 42 105 50 120 57 135 64
6001-7500 557.1-697 90 42 105 50 120 57 135 64 150 71

>7500 >697 105 50 120 57 135 64 150 71 165 78

* ASHRAE 62.2-2010 Table 4.1, Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings.

2

m

CFM L/s CFM L/s CFM L/s CFM L/s CFM L/s

Bathroom: If the HRV is going to provide the required local exhaust ventilation for each bathroom with each a continuous 20 CFM

(10 L/s), this ventilation rate can be considered as part of the whole-building ventilation rate.

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4

Installation examples

5

Example only – duct configuration may differ depending on the model.

FULLY DEDICATED SYSTEM
BEST FOR NEW CONSTRUCTION

Stale air is drawn from key areas of home (bathroom, kitchen, laundry)
Fresh air supplied to main living areas

1. Furnace blower must operate when ventilation from HRV is required. The
furnace should be set to run continuously or interlocked with HRV.

2. Weatherhood arrangement is for illustrative purposes only. 3m (10')
minimum separation and 460 mm (18") above grade is recommended.

Suggested installation for:

• Hydronic baseboard

• Inoor heating

• Electric baseboard

• Mini split heat pump

Benets: Provides the best
fresh air distribution in the
house; lowest operation cost
since the furnace/air handler
unit is not needed.

3. Due to the differences in pressure between the HRV and the equipment it is
being connected to, the HRV's airflow must be balanced on site, using the
procedure found in section “AIRFLOW BALANCING”.

Bedrooms

FEL 4 (4” Miter Elbow)

Exhaust CG 4 (4” Adjustable Grill)

Bathroom

Central Control - optional

Fresh air to living room

Fresh Air

Exhaust Air

3m

HRV

460 mm

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6

Installation examples (Cont'd)

DIRECT CONNECTION of the FRESH air to living area to the RETURN PLENUM
of the AIR HANDLER (Stale air drawn from key areas of home)

PARTIALLY DEDICATED SYSTEM (BETTER)

1. Furnace blower must operate when ventilation from HRV is required.
The furnace should be set to run continuously or interlocked with HRV.

2. Weatherhood arrangement is for illustrative purposes only. 3m
(10')minimum separation and 460 mm (18") above grade is
recommended.

3. Due to the differences in pressure between the HRV and the
equipment it is being connected to, the HRV's airflow must be
balanced on site, using the procedure found in section
“AIRFLOW BALANCING”.

Suggested installation for:

• Central furnace (air
handling unit or central air
conditioners)

• When ducting fresh air to
living area is not possible or
practical, i.e. expensive or
when the central AHU will
operate year-round.

Benets: Conditions the fresh
air prior to distributing it
throughout the house.

HRV/Furnace ducting for Partially Dedicated System

* Ductwork layout may dif­fer depending on model

Stale air coming from different areas of the
house (i.e. bathroom, kitchen).

* Unit air flow should be balanced while HRV is on "High" speed and fur­nace blower is running.

Air return

1 m (3' 3")

min.

recommended

Cold air

return

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Installation examples (Cont'd)

7

Example diagram only - Duct configuration may change depending on model

DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM and
EXHAUST AIR STREAM to the FURNACE COLD AIR RETURN

Simplified Installation

Option 1
(Return/Return Method)

1. Furnace blower must operate when ventilation from HRV is required.
The furnace should be set to run continuously or interlocked with
HRV.

2. A minimum separation of 1m (39") is recommended between the
two direct connections.

3. In order to prevent exhausting any fresh air, the HRV's exhaust air
connection should be upstream of the HRV's supply air connection
when ducting to the furnace's cold air return.

4. Weatherhood arrangement is for illustrative purposes only. 3m (10')
minimum separation and 460 mm (18") above grade is recommended.

5. Due to the differences in pressure between the HRV and the equip­ment it is being connected to, the HRV’s airflow should be balanced
on site, using the procedure found in section "AIRFLOW
BALANCING".

Suggested installation for:

• When bathroom and kitchen
already have local exhaust
system

• May be suitable for
retrotting

Benets: Least expensive
installation type

HRV/Furnace ducting for Simplified Installation - Option 1

* Ductwork layout may dif­fer depending on model

Outside

Stale air coming from different areas of the
house (i.e. bathroom, kitchen).

* Unit air flow should be balanced while HRV is on "High" speed and fur­nace blower is running.

Air return

1 m (3' 3")

min.

recommended

Cold air

return

In the case of a simplified
installation, Option 1 is
recommended.

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8

Installation examples (Cont'd)

Example diagram only - Duct configuration may change depending on model

DIRECT CONNECTION of both the HRV SUPPLY AIR STREAM &
EXHAUST AIR STREAM to the FURNACE COLD AIR RETURN & SUPPLY AIR SIDE

Simplified Installation

Option 2
(Supply/Return Method)

1. Furnace blower must operate when ventilation from HRV is
required. The furnace should be set to run continuously or
interlocked with HRV.

2. The exhaust air connection should be upstream of the supply
air connection to prevent exhausting any fresh air.

3. Weatherhood arrangement is for illustrative purposes only. 3m
(10') minimum separation and 460 mm (18") above grade is
recommended.

4. Due to the differences in pressure between the HRV and the
equipment it is being connected to, the HRV‘s airflow must be
balanced on site, using the procedure found section "AIRFLOW
BALANCING".

In the case of a simplified
installation, Option 1 is
recommended.

HRV/Furnace ducting for Simplified Installation - Option 2

* Ductwork layout may dif­fer depending on model

Outside

Stale air coming from different areas of the
house (i.e. bathroom, kitchen).

* Unit air flow should be balanced while HRV is on "High" speed and fur­nace blower is running.

Air return

1 m (3' 3")

min.

recommended

Cold air

return

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Exterior ducting installation

9

Weatherhood Location

• Decide where your intake and exhaust hoods will be located.

OUTSIDE CORNER INSIDE CORNER

36" (1m)

min.

Locating the Intake Weatherhood

• Should be located upstream (if there are prevailing winds) from the

exhaust outlet.

• At a minimum of 2m (6’) away from dryer vents and furnace exhaust

(medium or high efficiency furnaces), driveways, oil fill pipes, gas meters,
or garbage containers.

INTAKE

18" (460mm) min.

• At a minimum height of 460 mm (18’’) above the ground, or above the

level of expected snow accumulation.

• At a minimum distance of 1m (3’) from the corner of the building.

• Do not locate in the garage, attic, crawl space, or underneath deck.

Locating the Exhaust Weatherhood

• At least 460 mm (18") above ground or above the depth of expected snow accumulation

• At least 1m (3’) away from the corner of the building

• Not near a gas meter, electric meter or a walkway where fog or ice could create a hazard

• Do not locate in a garage, workshop or other unheated space

Installing the ducting to the weatherhoods

A well designed and installed ducting system will allow the HRV to operate at its maximum
efficiency. The inner liner of the flexible insulated duct must be secured to the sleeve of the
weatherhood (as close to the outside as possible) and to the appropriate duct connection on the
HRV. The insulation should remain full and not crushed. The outer liner, which acts as a vapor
barrier, must be completely sealed to the outer wall and the HRV using tape and/or caulking. A
good bead of high quality caulking (preferably acoustical sealant) will seal the inner flexible duct to
both the HRV duct connection and the weatherhood prior to securing them.

To minimize airflow restriction, the flexible insulated duct that connects the two outside
weatherhoods to the HRV should be stretched tightly and be as short as possible.

Twisting or folding the duct will severely restrict airflow.

See “Installation Diagram Examples” for installation examples.

6' (2m)

min.

36” (1m)

min.

EXHAUST

18" (460mm) min.

Steps for hood installation:

1 Using the duct connection of

the outside hood, outline the
intake & exhaust holes to be
cut. The holes should be slightly
larger than the duct connection
to allow for the thickness of the
insulated flexible duct. Cut a
hole for both the intake and
exhaust hoods.

2 Pull the insulated flexible duct

through the opening until it is
well extended and straight.
Slide the duct’s inner vinyl sleeve
over the hood duct connection
and secure. Pull the insulation
over the duct and pull the vapor
barrier over the sleeve. Secure
with appropriate tape or
sealant.

3 Push the hood into the opening

and then attach the hood to the
outside wall with mounting
screws.
Repeat the installation
procedure for both the supply
and exhaust hoods.

4 Using a caulking gun, seal

around both hoods to prevent
any leaks.

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10

Interior ducting installation

• To maximize airflow through the ductwork system, all ducts should be kept short and have as few bends or elbows as possible.

• 45º elbows are preferable to 90º.

• Use “Y“ ducts instead of “T” ducts whenever possible.

• All duct joints must be fastened with screws or duct sealant and wrapped with aluminum foil duct tape to prevent leakage.

• Galvanized ducting from the HRV to the living areas in the house is recommended whenever possible, although flexible ducting

can be used in moderation when necessary.

• To avoid possible noise transfer through the ductwork system, a short length (approximately 300 mm, 12’’) of nonmetallic flexible
insulated duct should be connected between the HRV and the supply/exhaust ductwork system.

• The main supply and return line to/from the HRV must have the same diameter as the duct connection or larger.

• Branch lines to the individual rooms may be as small as 100 mm (4’’).

Installing ducting to HRV

For flexible duct installation, slide flexible ducting onto duct connection. Then install a
cable tie over flexible duct to prevent leakage between the ducting and the duct
connection.

In the case of solid ducting, slide duct over duct connection, screw in place and sea

l.

Supply air grilles location

In homes without a forced air furnace, fresh air should be supplied to all habitable rooms, including bedrooms and living areas. It should be supplied
from high wall or ceiling locations. Grilles that diffuse the air comfortably are recommended. In homes with a forced air furnace, you may want to connect
the HRV to the furnace ductwork (see information below).

Exhaust air grilles location

The stale air exhaust system is used to draw air from the points in the house where the worst air quality problems occur. It is recommended that return
air ducts be installed in the bathroom, kitchen, and laundry room. Additional return air ducts from strategic locations may be installed. The furnace
return duct may also be used to exhaust from. In this method, the exhaust air is not ducted back from bathrooms, kitchens, etc to the HRV with
“dedicated lines”.

Ducting fifth port units(R)

Units SHR1505R, SHR2005R, SHR3005R and SHR3205RD have a 5th port on top and units VHR1405R and VHR2005R have a 5th port on the side.
This duct port is for both the defrost and recirculation modes. A motorized damper installed in the port closes during defrost or recirculation,
temporarily blocking the incoming fresh air-stream, allowing the warm air from the house to circulate through the HRV. You may wish to duct this port
to a common room with clean air (living room or dining room), so when the recirculation mode is activated, household odors from the kitchen, bathroom
or basement won’t be introduced into the living spaces of the home environment.

As per building codes and installation requirements for combustion appliances:
Air return ducts, or openings for air return, should not be placed in enclosed spaces containing combustion
appliances that are subject to spillage.

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HRV installation

Location

The HRV must be located in a conditioned space where it will be possible to conveniently service the unit. Typically
the HRV would be located in the mechanical room or an area close to the outside wall where the weatherhoods will
be mounted. If a basement area is not convenient or does not exist, a utility room may be used.

Attic installations are not normally recommended due to:

• Install the unit close to the
outside wall on which the
supply and exhaust hoods
will be mounted.

• Have a nearby power supply
120 Volts, 60Hz. (power
cord is 3 feet long)

• Mount the unit as level as
possible in order to allow
proper condensate drainage.

• Have access to a water
drain for the condensate of
the unit during defrost.

• Have a certain amount
of heat around the unit
(attic installation is not
recommended).

• Installations close to the
living space, such as closets,
should be design and to
minimize noise or vibration
transfers.

• • Have access for future

maintenance. (10” is

Mounting

recommended for removal
of core)

• The complexity of the installation

• Freezing conditions in the attic

• Difficulty of access for service and cleaning

• No drain access

Connecting appliances to the HRV is not recommended. These include:

• Clothes dryer

• Range top

• Stovetop fan

• Central vacuum system

• Bathroom exhaust fans unless they are specifically designed for this purpose

These appliances may cause lint, dust or grease to collect in the HRV, damaging the unit.

Connecting any of
these types of
appliances to the
HRV will void your
warranty.

11

1 Place fastening hooks on

the strapping board or
the oor joists.

Installing drain line

Through normal operation and during its defrost mode, the HRV may produce some condensation. This water should flow into a nearby drain, or be taken
away by a condensate pump. The HRV and all condensate lines must be installed in a space where the temperature is maintained above the freezing point.
A “P” trap should be made in the drain line. This will prevent odors from being drawn back up into the unit.

1 Install the drain nipple.

2 Attach a hanging chain

(provided) to each 19 mm
(3/4") bolt (provided) in the
top 4 corners of the unit
and tighten..

2 Install the drain hose,

making a “P” trap

3 Hang the unit by slipping

a link onto the hanging
hooks, making sure the
unit is level.

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12

Start up procedure

The Switch on the side of the unit is used to toggle between STANDBY, REDUCED speed and NORMAL speed modes.

Place the unit in NORMAL speed to perform the balancing.

Airflow balancing

IF THE UNIT'S AIR FLOWS ARE NOT PROPERLY BALANCED...

• THE UNIT'S EFFICIENCY MAY BE REDUCED.

• THE UNIT'S CORE MAY BECOME DAMAGED.

• NORMAL OPERATION OF THE UNIT COULD CAUSE THE PRESSURIZATION OR DEPRESSURIZATION OF

YOUR HOME, WHICH CAN LEAD TO AIR LEAKS OR BACKDRAFTING OF ANY COMBUSTION APPLIANCES.

The balancing procedure consists of measuring the supply air flow and the return air flow to ensure that they are equal. A difference of up to 10% is
considered acceptable. In the cases where the air flow is not exactly the same, it is recommended to have a higher return air flow to ensure that the
temperature of the supply air flow coming from outside is as close to room temperature as possible.

• For optimal performance, HRV unit should be re-balanced after a major renovation or after the
installation of extra grilles or registers.

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