Samsung Fresh Access AN035NSEDAV/AA User manual

Installation Manual
Light commercial models
Energy Recovery Ventilators
SHA-FAERV-09212018
Source Rev Date: 2018-09-05
MODELS: AN035NSEDAV/AA, AN075NSEDAV/AA, AN120NSEDAV/AA
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”.
Samsung HVAC 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.SamsungHVAC.com for more detailed technical information.

Note Warning/
Important
note
Information Technical
information Practical tip
PLEASE READ THIS MANUAL BEFORE INSTALLING UNIT
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 combustion 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.
2

Table of contents
INSTALLATION
Location. .... .. .. . .. .......... .. ..... ........................ .. . ....... ... 4
Por t 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 .. ................................... ................................... 13
WIRING DIAGRAM ............................ .........................................14
INSTALLATION VERIFICATION TEST. ........... .......................................... 18
3
WARNING
State of California Proposition 65 Warning (US only)
This product contains chemicals known to the State of California to cause cancer and birth defects or other
reproductive harm.

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
A
B
C
DE
F
G
Models ABCDEFG
Kg lbs Kg lbs in. mm. Kg lbs Kg lbs Kg lbs in. mm.
AN035NSEDAV/AA 16.6 36.6 15.6 34.4 12.6 320 58 127.9 13.6 30 12.7 28 17.6 448
AN075NSEDAV/AA 21.7 47.8 20.4 44.9 15.4 390 76 168 17.8 39.3 16.6 36.6 17.6 448
AN120NSEDAV/AA 31.4 69.3 25.8 56.9 10 254 102.5 226 26.7 58.9 21.2 46.7 19 483
4

COLD SIDE
COLD SIDE WARM SIDE
AN120NSEDAV/AA
WARM SIDE
WARM SIDE COLD SIDE
COLD SIDE
WARM SIDE
Factory Setting. Unit may be easily reversed in
field.
Factory Setting. Unit may be easily
reversed in field.
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.
AN035NSEDAV/AA and AN075NSEDAV/AA
5

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.
Remove 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
If outdoor air temperature is above 32°F (0°C) at the extract air (30% RH/72°F, 30% RH /22°C), no drain line
installation is required. If this is the case keep the drain spout as shipped from factory with the cap.
6

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 90o 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) or CG (plastic)} grilles with
"coanda effect" are recommended.
Optional inline duct heaters may be used to add heat if required.
A The 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
A*
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.
7

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
ERV UNIT
SUPPLY DUCT
RETURN AIR DUCT
AIR HANDLER UNIT
SUPPLY IN
BALANCING DAMPERS
SUPPLY IN
EXHAUST OUT
ERV 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
EXHAUST AIR TO ERV UNIT
8

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
ERV 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
9

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
10

The ERV is shipped from the factory on low speed, intermittent operation can be obtained by toggling switch located on
outside of cabinet. The voltage selection for low (reduced) speed of the unit is done via jumpers shown in the illustration
below. The default setting 75V.
Setting low speed (AN120NSEDAV/AA)
Low: 75V
(Factory Default)
Low: 90V
Configurable speed control for low (reduced) speed
CAUTION MAKE SURE THE POWER TO THE UNIT IS DISCONNECTED BEFORE MAKING ANY CHANGES
11

Low Voltage Control Systems
* Please see instruction manuals for individual controls for proper wiring and set up of control systems.
Wired Controller
Wired control options can only be used individually
CONTROLS FEATURES CONNECT TO
ECO-Touch® •Our most complete, yet easy to use control system
•Sleek design with backlight touchscreen LCD
•ECO mode selects the best operating mode and speed for the
season, minimizing energy use associated with ventilation
•Set preferred indoor relative humidity range and ventilation
mode for day and night conditions
•No battery to replace, all programmed settings are retained during
power outage
•Maintenance reminder indicator
•Error code messages reduce troubleshooting time
1. Ensure that unit is not
plugged when
connecting the control
The wiring
connectors can be
removed for easier
connection.
W
W
12

ERV Core
Clean core on a average every 3-6 months or as needed.
1. Remove access doors and filters
2. Remove the core from the unit.
3. With one of the core's inlet facing down, place it in a large sink, bathtub, or shower.
4. Pour clean tap water through the face of the core facing upward until it runs clear. Ensure the entire surface is rinsed.
5. Rotate the core so that its other air inlet is facing down and repeat step 4.
6. With the plates still oriented vertically allow the core to dry, normally 2-3 hours.
Core installation label on the outer end of the core.
To install the clean Core and Filters.
a) First mount the bottom flange of the core guide into the bottom channel approximately 1/4" (6mm)
b) Mount the left or right side flange of the core guide approximately 1/4" (6mm) followed by the other side
c) Mount the top flange of the core guide into the top channel approximately 1/4" (6mm)
d) With all four corners in place and the core straight and even, push hard in the center of the core until the core stops on
the back of the cabinet.
Maintenance
The motor - The motors are factory balanced and lubricated for life. They require no maintenance.
The unit - The inside of the unit should be wiped clean as needed.
Outside hoods - The outside hoods need to be checked every season to make sure there are no leaves or insects blocking
the airflow. Check regularly that there are no pollutants near the intake hood. Make sure they are clear of any snow
accumulation during the winter months.
CAUTION MAKE SURE UNIT IS UNPLUGGED BEFORE ATTEMPTING ANY MAINTENANCE WORK
The following components should also be inspected regularly and well maintained.
5
6
3
4
Filters
The filters need to be checked and cleaned once a month or when they appear dirty.
13

W
R
G
C
Y
WR G Y
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
RV-CTRL
24VAC
Standard Furnace Interlock Wiring
W
R
G
C
Y
WR G Y
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
SHUTOFF
DAMPER
SHUTOFF
DAMPER
RV-CTRL
24VAC
Standard Furnace Interlock Wiring (w/Damper)
1 3
COIL
CONTROL RELAY
(TERMINAL LABELING MAY VARY)
RC

W
R
G
C
Y
WR G Y
Alternate Furnace Interlock Wiring
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
RV-CTRL
24VAC
Alternate Furnace Interlock Wiring (w/Damper)
W
R
G
C
Y
WR G Y
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
SHUTOFF
DAMPER
SHUTOFF
DAMPER
RV-CTRL
24VAC
NC
COIL
CONTROL RELAY
(TERMINAL LABELING MAY VARY)
RC
NOCOM

Wiring Diagram - AN035NSEDAV/AA
14
AN035NSEDAV/AA
(24VAC, field provided)

Wiring Diagram - AN075NSEDAV/AA
15
AN075NSEDAV/AA
(24VAC, field provided)

Wiring Diagram - AN120NSEDAV/AA
16
AN120NSEDAV/AA
(24VAC, field provided)

W
R
G
C
Y
WR G Y
Standard Accessory Control Contact
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
W
R
G
C
Y
WR G Y
Alternative Accessory Control Contact
THERMOSTAT
TERMINALS
FURNACE
24-VOLT
TERMINAL BLOCK
FOUR
WIRE
TWO WIRE
heating only
TWO
WIRE
COOLING SYSTEM
WIRE JOINT
WIRING DIAGRAM (CONT'D)
WIRING DIAGRAM
TO FURNACE
FOR A FURNACE
CONNECTION TO
A COOLING SYSTEM:
On some newer furnaces and
older thermostats, energizing the
R and G terminal at the furnace
has the effect of energizing the Y
at the thermostat and thereby
turning on the cooling system. If
you identify this type of
thermostat, you must use the
“Alternate Furnace Interlock
Wiring”
ATTENTION: Do not to connect
the ERV unit to a furnace if
shutoff dampers are installed as
it will cause damage to the
furnace controls.
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.
17

Installation Verification Test
Without external control
1. Fan speed selector switch
•Set fan Speed selector switch to Standby.
2. Start-up
•Apply power to unit
•Unit should enter Exhaust only defrost mode for a 10 second duration and the following should occur:
Exhaust fan runs in HIGH (Normal) speed
Supply fan remains off
3. Standby
•Following the start-up unit should enter Standby mode. The following should occur:
Exhaust fan shuts off
Supply fan remains off
4. LOW (Reduced) speed
•Set fans speed selector switch LOW (Reduced) speed. The following should occur.
Exhaust fan runs in LOW (Reduced) speed
Supply fan runs in LOW (Reduced) speed
5. HIGH (Normal) speed
•Set fans speed selector switch HIGH (Normal) speed. The following should occur.
Exhaust fan ramps up to HIGH (Normal) speed
Supply fan ramps up to HIGH (Normal) speed
6. Test completion
•Set fan speed selector switch to desired setting
•Installation Verification test is complete
With external control
1. Start-up
•Apply power to unit
•Unit should enter Exhaust only defrost mode for a 10 second duration and the following should occur:
Exhaust fan runs in HIGH (Normal) speed
Supply fan remains off
2.
•Following start-up unit will respond to external control
•Consult user manual/instruction provided with external controller and ensure unit responds appropriately.
3. Test completion
•Installation Verification test is complete
18