System air SER 450 User manual

Installation Manual

Light commercial models

Energy Recovery Ventilators

Item #: 444566

Rev Date: 2020-11-09

SER 450 • SER 700 • SER 1100 • SER 1300

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”.

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.

United States

10048 Industrial Blvd., Lenexa, KS, 66215

Tel.: 800.747.1762 • Fax: 800.487.9915

Canada

50 Kanalflakt Way, Bouctouche, NB, E4S 3M5

Tel.: 800.565.3548 • Fax: 877.747.8116

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Note Warning/

Important

note

Information Technical

information Practical tip

PLEASE READ AND SAVE THESE INSTRUCTIONS

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. After installation,

the compatibility of the two pieces of equipment must be confirmed by measuring the airflow’s of the Energy

Recovery Ventilators. It is always important to assess how the operation of any ERV may interact with vented com-

bustion equipment (i.e. Gas Furnaces, Oil Furnaces, Wood Stoves, etc.).

Never install a ventilator in a situation where its normal operation, lack of operation or partial failure may result

in the backdrafting or improper functioning of vented combustion equipment!!!

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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Understanding Fantech Product Numbers

SER 700

S = Side Ducting

E = ENERGY Recovery

R = Remote Control Option

700 = 700cfm @0.4 W.G

Table of content

INSTALLATION

Location ...........................................................................4

Port Configuration .....................................................................5

Installing Duct Connections...............................................................6

AIRFLOW BALANCING.........................................................................7

INSTALLATION EXAMPLES

Fully Dedicated Systems.................................................................8

Partially Dedicated Systems (direct connections) ...............................................8

Partially Dedicated Systems (indirect connections) ..............................................9

Simplified Installation ...................................................................9

MODES OF OPERATION .......................................................................10

Speed Setting .......................................................................11

LOW VOLTAGE CONTROL SYSTEM ...............................................................12

MAINTENANCE .............................................................................14

WIRING DIAGRAM ..........................................................................15

INSTALLATION VERIFICATION TEST...............................................................20

PARTS LIST ...............................................................................44

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Installation

Location

The ERV must be located in a conditioned space where it will be possible to conveniently service the unit. Typically the ERV would be located in the

mechanical room, above a drop ceiling or an area close to the outside wall where the weatherhoods will be mounted. Attic installations are not normally

recommended due to extreme temperatures, and difficulty in performing required service & maintenance. If an attic is selected, special care should be

taken in ensuring the unit will perform as intended. Unit may need to be protected with an insulated shelter built on site.

Connecting appliances to the ERV It is not recommended, including:

• clothes dryer

• kitchen exhaust hoods

• combustion venting

• central vacuum system

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

Connecting any of these type of appliances to the ERV will invalidate your warranty

Model A B C D E F G

Kg lbs Kg lbs in. mm. Kg lbs Kg lbs Kg lbs in. mm.

SER 450 16.6 36.6 15.6 34.4 12.6 320 58 127.9 13.6 30 12.7 28 17.6 448

SER 700 21.7 47.8 20.4 44.9 15.4 390 76 168 17.8 39.3 16.6 36.6 17.6 448

SER 1100 27.4 60.5 24.3 53.5 21.4 544 97.5 215 24.7 54.5 21.3 47 18 455

SER 1300 31.4 69.3 25.8 56.9 10 254 102.5 226 26.7 58.9 21.2 46.7 19 483

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Port configuration

The unit has access doors on the front and back. Also, the main control panel may be moved from front to back allowing for ducting layout.

SER 450, SER 700 & SER 1100

COLD SIDE

WARM SIDE

SER 1300

WARM SIDE

WARM SIDE COLD SIDE

COLD SIDE

Factory Setting. Unit may be easily reversed

in eld.

Factory Setting. Unit may be easily reversed

in eld.

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Installing ducts going to / from outside

Installing the ducting to the weatherhoods

Outside weatherhoods

The weatherhoods must have built-in "bird" screens with 1/4 inch (6.35 mm) minimum mesh to prevent birds and rodents from entering into the

ductwork. Do not use smaller mesh as it will be very susceptible to plugging up. The preferred location of the weatherhoods is:

• No less than 10 ft. (3 m) apart from each other.

• At least 18 inches (457.2 mm) above snow line or ground level.

• Supply hood must be kept away from sources of contaminants, such as automobile exhaust fumes, gas meters, garbage cans, containers,

cooling towers, tar roofs, etc.

• Avoid prevailing winds, whenever reasonably possible.

The outside perimeter of the weatherhood must be sealed to prevent leakage into the building.

Careful consideration should be given to selecting an outside hood with a face velocity low enough so as not to encourage the migration of rain or snow

into the ductwork.

Ducting from the weatherhoods–To and From the ERV

Galvanized sheet metal ducting with sufficient cross section with an integral single piece of insulated wrap with vapor barrier should be used to connect

the ERV to the weatherhoods. Insulated flex duct may be used in moderation, if sized and installed properly. (Consult local codes)

A minimum R value of insulation should be equal to 4 (RSI 0.75) ,consult local codes.

All ducts should be sealed using a good bead of high quality caulking (preferably acoustical sealant) and a high quality aluminum foil tape, or other

approved duct sealant.

Installing Drain Line

Through normal operation and including defrost mode, the ERV may produce some condensation. This water should flow into a nearby drain, or be taken

away by a condensate pump. The ERV 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.

Remore the drain spout, invert it so it protrudes from the botton of the unit and re-install in order to connect a condensate drain

Install the drain hose, making a “P” trap

Caution:

A Drain and Tubing (included) must be installed for all HRV units. For ERV units, drain is not required,

however, it is recommended for climates where outdoor temperature typically remains below -25°C

(-13°F) combined with an indoor relative humidity higher than 40% for a period of 24 hours or several

days in arow.

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Exhaust air ducting

The stale air exhaust system is used to draw air from the points in the building where the worst air quality problems occur. ( See installation

examples in the manual.)

Installing ducts to / from inside

Direct connection to furnace/ air handler return duct

• Should you wish to hard duct the supply air directly into the cold air return of the HVAC systems, remember to check the airflow balance of the ERV

with the HVAC systems fan both “on”and “off” to determine that it does not imbalance the ERV more than 10%. Make sure you respect the minimum

distance from the supply air in of the ERV and the HVAC systems.

• It may be necessary to install a separate fresh air supply ductwork system if the cooling is other than forced air.

When installing an ERV, the designer and installer should be aware of local codes that may require smoke detectors and/or firestats in the HVAC

or ERV ductwork.

Because an ERV is designed to bring fresh air into the building, structures may require supply voltage interrupt when smoke or flame sensors are

triggered, or when a central fire alarm system is activated.

To maximize airflow in the ductwork system, all ducts should be kept short and have as few bends or elbows as possible. Forty-five degree are

preferred to 90elbows. Use “Y” tees instead of mitered tee whenever possible.

All duct joints must be fastened with screws or duct sealant and wrapped with a quality duct tape to prevent leakage. Aluminum foil duct tape is

recommended.

Supply air ducting

In buildings without a forced air HVAC systems, fresh air should be supplied to all habitable areas. It should be supplied from high wall or ceiling

locations. Grilles that diffuse the air comfortably such as grille {MGE (metal)}grilles with "coanda effect" are recommended.

Optional inline duct heaters may be used to add heat if required.

AThe duct’s airflow velocity

is generally measured

with a magnehelic gauge

and a pitot tube.

• To avoid airflow turbulence

and incorrect readings, the

airflow velocity should be

measured on steel ducting

a minimum of 3 duct

cross-sections from the

unit or elbow and before

any transition.

• The balancing procedure consists of measuring the exhaust air leaving the system and the supply air entering the system and ensuring that these

two are equal. A deviation of 10% or less is acceptable.

Airflow balancing

Pitot tube and gauge

A professional air balancer should be contacted to commission the system properly. A skilled HVAC Tech may complete the balance

of air providing they possess the proper equipment. Call Fantech Technical support for assistance.

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Installation examples

* Drawings are illustrations only and actual port locations and airflow directions may vary, consult unit spec sheets.

It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform as intended.

The amount of air (CFM) that an ERV will deliver is directly related to the total external static pressure (E.S.P.) of the system. Static pressure

is a measure of resistance imposed on the blower by length of duct work/number of fittings used in duct work, duct heater etc.

Fully Dedicated System

• Stale air drawn from areas of contamination

• Fresh air supplied to main areas

• ERV airflow should be balanced

• External heating or cooling coil may be needed if air is not able to mix comfortably.

SUPPLY IN

EXHAUST OUT

HRV UNIT

SUPPLY DUCT

RETURN AIR DUCT

EXHAUST AIR TO HRV UNIT

AIR HANDLER UNIT

SUPPLY IN

BALANCING DAMPERS

SUPPLY IN

EXHAUST OUT

HRV UNIT

SUPPLY IN

BALANCING DAMPERS

Partially Dedicated System (Direct Connection)

• Stale air drawn from areas of contamination

• Fresh air supplied to return of air handler

• Air Handler blower may need to operate when call for ventilation

• ERV airflow should be balanced

ERV UNIT

EXHAUST AIR TO ERV UNIT

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Installation examples (Cont'd)

* Drawings are illustrations only and actual port locations and airflow directions may vary, consult unit spec sheets.

It is the responsibility of the installer to ensure all ductwork is sized and installed as designed to ensure the system will perform as intended.

The amount of air (CFM) that an ERV will deliver is directly related to the total external static pressure (E.S.P.) of the system. Static pressure

is a measure of resistance imposed on the blower by length of duct work/number of fittings used in duct work, duct heater etc.

SUPPLY IN

EXHAUST OUT

HRV UNIT

RETURN AIR DUCT

AIR HANDLER UNIT

SUPPLY IN

BALANCING DAMPERS

SUPPLY IN

EXHAUST OUT

HRV UNIT

SUPPLY DUCT

EXHAUST AIR TO HRV UNIT

12" BREATHER SPACE

CEILING RETURN AIR PLENUM

AIR HANDLER UNIT

SUPPLY IN

BALANCING DAMPERS

Simplified Installation

• Stale air drawn from return of air handler

• Fresh air supplied to return of air handler, further down

stream of ERV exhaust

• Air Handler blower must operate when ERV is providing

ventilation

• ERV airflow should be balanced

Partially Dedicated System (Indirect Connections)

• Stale air drawn from areas of contamination

• Fresh air supplied into ceiling return air plenum or grille

• ERV airflow should be balanced

ERV UNIT

EXHAUST AIR TO ERV UNIT

ERV UNIT

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1. Continuous / Ventilation Mode

In this mode of operation both fans are operating and exchanging inside air for outside air. The energy recovery ventilator (ERV) will operate at the selected

rate, either at low or medium speed, and switches to high speed when activated by an optional remote control. The "LOW (reduced)" and "HIGH (Normal)"

fan speed selection will cause the unit to operate in continuous ventilation mode at a reduced exchange rate. Continuous mode is recommended, since

pollutants are slowly but constantly being generated in a building.

2. Intermittent / Standby Mode

The system is always on standby and operates at high speed when activated by an optional remote control (required): "Standby" should be selected if

the user wishes to stop the unit from continuous exchange.

3. Defrost by evacuation

A preset defrost sequence is activated at an outdoor air temperature of 23°F (-5°C) and lower.

During the defrost sequence, the supply blower shuts down & the exhaust blower continues to ventilate for a preset time. The unit then returns to

the normal operation, and continues the cycle.

Modes of operation

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