aldes H/E240 Manual

OPERATIONS & MAINTENANCE MANUAL
RESIDENTIAL
HEAT & ENERGY RECOVERY VENTILATORS
FOR MODELS:
H/E95 • H/E110 • H/E150 • H/E190 • H/E240
Meets Standards:
C22.2 no 113 and UL 1812
Installing Contractor Telephone / Contact
Serial Number Installation Date
TO BE COMPLETED BY CONTRACTOR AFTER INSTALLATION
Model
Installer: Leave this manual for the homeowner

TABLE OF CONTENTS
HRV/ERV MODEL REFERENCE
I. INTRODUCTION 3
II. GENERAL HRV/ERV TERMINOLOGY & FUNCTION 3
Denitions 3
How Heat & Energy Recovery Ventilators Work 3
Ventilating with HRV/ERVs 4
III. PRECAUTIONS & GUIDELINES 5
Ducting Congurations 6
Locating the Air Exchanger 11
Recirculation Using Fifth Ports (Optional) 11
Ducting Materials 11
Connecting the Ducts 11
Vent Hood Locations 12
Locating the Exhaust Air Grilles or Registers 13
Locating the Air Grilles of Diusers 13
Zone Register Terminals (ZRT®) 14
Humidity Control 14
IV. INSTALLATION 15
What’s Included 15
Mounting the Unit 16
Drain Connections (HRV Models) 17
Interlocking the HRV/ERV to an Air-Handler/Furnace Blower 18
Unit Wiring 18
Enabling Slave Mode 19
Using Slave Mode 21
Field Wiring 23
Electrical Interface 23
Installing the Digital Multifunction Controller (P/N 611242-FC) 23
Installing the Humidity Control (P/N 611224) 25
Installing the 20/40/60 Minute Timer (P/N 611228) 26
Installing the Speed Control (P/N 611229) or Mode Control (611230) 27
ZRT VentZone® Systems 28
V. MEASURING & BALANCING AIRFLOW 30
Measure and Balance 30
Door-Port Balancing 30
In-Duct Balancing 34
ZRT VentZone® Balancing 35
VI. MAINTENANCE 36
General Maintenance 37
Replacement Filters 38
Technical Assistance 38
Troubleshooting 39
VII. WARRANTY 42
What’s Included 42
How to File a Warranty Claim 42

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I. INTRODUCTION
Thank you for purchasing this Aldes ventilation product. To receive the full benet of your
investment, we recommend that you read and retain this operating manual for future
reference.
II. GENERAL HRV/ERV TERMINOLOGY AND FUNCTION
Denitions
HRV (Heat Recovery Ventilator): A ventilation device consisting of two fans and a heat re-
covery module to provide exhaust of stale indoor air, plus a balanced supply of fresh air,
without mixing the two airstreams.
ERV (Energy Recovery Ventilator): This device is similar to the HRV, but diers only in that
the core also transfers humidity from the more humid air stream to the less humid air stream.
How Heat & Energy Recovery Ventilators Work
In the heating season, Aldes Heat Recovery Ventilators (HRV) and Energy Recovery
Ventilators (ERV) draw in fresh air from outside. This air is distributed throughout the home
by a dedicated-duct system or through the forced-air heating/air conditioning system. At
the same time, vents located in moisture- and pollutant-producing rooms (e.g., kitchens,
bathrooms, laundry rooms) exhaust an equal amount of stale, humid air to the outside.
Sometimes air is drawn directly from the return air of a forced-air heating/air conditioning
system.
As the two airstreams pass each other in the unit’s core, the fresh air is tempered with heat
recovered from the exhaust air. An ERV will also transfer moisture to the fresh air if this air is
drier than the exhaust air, improving comfort in overly dry homes.
Stale Air
from Inside
Stale Air to
Outside
Fresh Air from
Outside
Fresh Air
to Inside

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In the cooling season, the reverse occurs. Fresh outdoor air is cooled by the air-conditioned
exhaust air. If the outgoing air is drier than the fresh air, the ERV will transfer moisture to the
outgoing air. This process reduces the humidity load on the air conditioning system, which
would otherwise result in the continuous introduction of humid summer air to the home.
NOTE: It is important to understand that an ERV is not a dehumidier by itself, but it will
assist the air conditioner by removing much of the latent heat (water vapor) from the fresh
air entering the home.
Ventilating with HRV/ERVs
Today’s modern, tight homes require fresh outdoor air to maintain a healthy indoor air
environment. The amount of ventilation you require in your home will depend upon:
• Number of occupants and their activity levels
• How your home was built
• Your personal preferences for fresh air
The Aldes HRV/ERV introduces fresh air to your home while recovering energy from the air
it exhausts. Specically, an HRV/ERV that is properly installed, operated and maintained will:
• Exhaust stale, contaminated air
• Recover the majority of the energy from the exhausted stale air
• Use the recovered energy to pre-heat or pre-cool outside air drawn into the house
• Distribute the fresh air throughout the house
During seasons when your windows and doors are closed (winter and summer if air
conditioned), the HRV/ERV should be set to operate continuously on low speed with the
option of going to high speed as the need arises. For example, if you are entertaining and
many people are present, you should temporarily switch the unit to high speed.
You may wish to use an intermittent operational mode if your home is unoccupied for long
periods.

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III. PRECAUTIONS & GUIDELINES
WARNING indicates the potential of risk of personal injury or death if not observed.
CAUTION identies an action that may damage the unit, its components, or related
equipment.
RECOMMENDATIONS and NOTES suggest operational modes, installation of vent hoods,
interior supply and exhaust duct layouts, use of advanced features of the equipment that
may result in improved economy and comfort.
Installation and operation of these units must be in accordance with
applicable local building and safety codes.
WARNING!
To avoid injury or damage to this unit, do not attempt to service any of the
internal electrical or mechanical components. Your heat/energy recovery
ventilator should be installed and serviced by a qualied heating and
electrical contractor.
CAUTION
Before installation, careful consideration must be given to how this system
will operate if connected to any other piece of mechanical equipment that
operates at a higher static, i.e., a force-air furnace or air handler. After
installation, the compatibility of the two pieces of equipment must be
conrmed by measuring the airows of the HRV/ERV using the balancing
procedure found in this manual.
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.
WARNING!
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSON(S) OBSERVE
THE FOLLOWING:
1. Use this unit only in the manner intended by the manufacturer. If you have questions,
contact the manufacturer at the address or telephone number provided.
2. Before servicing or cleaning the unit, disconnect the power cord from the electrical
outlet.
3. This unit is not designed to provide combustion and/or dilution air for fuel-burning
appliances.
4. This unit is not designed to provide make-up air for other exhausting devices, such as
range exhaust hoods, clothes dryers, or other exhaust fans.

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5. When cutting or drilling into wall or ceiling structures, do not damage electrical wiring
or other hidden utilities.
6. Do not use this unit with any speed controls, dehumidistats or timers other than those
specically indicated within this manual.
7. This unit must be grounded. The power supply cord has a three-prong grounding
plug for your personal safety. It must be plugged into a mating 3-prong grounding
receptacle, grounded in accordance with national and local codes. Do not remove the
ground prong. Do not use an extension cord.
8. Do not install exhaust grilles in a cooking area (see “Locating the Exhaust Air Grilles or
Registers”on page 13). Do not connect directly to any appliances.
9. Do not use to exhaust hazardous or explosive materials and vapors.
10. When performing installation, servicing or cleaning the unit, it is recommended to wear
safety glasses and gloves.
11. When local regulations comprise more restrictive installation or certication
requirements, such requirements supersede those in these instructions.
CAUTION
1. This unit is intended for residential use only, conforming to the requirements of the
International Residential, Building, and Mechanical Codes, NFPA 90B for the United
States and the National Building Code of Canada.
2. Turn the unit o during construction to avoid clogging the lters and loading the
blowers with construction dust.
3. Refer to the specication sheet for the specic model’s dimensions, electrical
requirements, drain connections, etc.
4. Ducting of stale air to the outdoors and fresh air from outdoors, must be terminated
outdoors, not attics, crawl spaces, or attached garage.
Ducting Congurations
The interior ducting system’s purpose is to remove stale air and circulate fresh air to all
habitable rooms. 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 HRV/ERV will deliver is directly related to the total external
static pressure (ESP) of the system. Static pressure is a measure of resistance imposed on the
blower by a length of ductwork plus the number of ttings used in the ductwork.
The following pages outline 4 duct congurations, from most desirable to least desirable.
Note: These congurations are intended for typical single-family and multi-family residences.
Applications such as greenhouses, atriums, swimming pools, saunas, etc., have unique
ventilation requirements that should be addressed with an isolated ventilation system.

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Fully Ducted System – Best Conguration
Fully Ducted System
The fully ducted system has the highest ventilation eectiveness. It is especially suited for
homes without forced-air systems used for both heating and cooling. Dedicated exhaust
grilles draw stale air from service rooms. Dedicated supply registers provide fresh air to main
living areas and bedrooms. Grilles should be located high on a wall or in the ceiling. Grilles
that diuse the air are recommended. Special care should be taken in locating grilles in the
oor. Areas under baseboard heaters will help temper the air. See “Locating the Exhaust Air
Grilles or Registers”page 13 and “Locating the Air Grilles of Diusers”page 13 . Also refer to the
installation instructions included with these products (sold separately).
This system is not connected to an Air-Handling Unit (AHU) or furnace. This system is
normally balanced on high speed. If Aldes patented* Zone Register Terminals (ZRT®) are used
for exhaust or supply registers, balancing must be done at normal operating speed.
INDOOR AIR
SUPPLY AIR
OUTDOOR AIR
EXHAUST AIR
*Note: Port congurations
are generic and do not
represent specic models
6 ft min
*U.S. Pat. No. 7,766,734 Canada Pat. No. 2,570,948

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Partially Ducted System – Conguration
Partially Integrated Duct Conguration
In a partially ducted conguration, individual exhaust grilles in bathrooms, laundry rooms,
and kitchens draw stale air. Each location with a stale air duct could also have a timer that
will initiate high-speed ventilation. Fresh air is distributed by the Air-Handling Unit (AHU) of
a forced-air heating or air conditioning system. The connection to the forced-air system is
typically to the return ducting or plenum of the AHU. See section “Interlocking the HRV/ERV
to an Air-Handler/Furnace Blower” on page 18.
While this conguration is common in commercial installations, it is not always recommended
for residences due to the following:
1. In this case, the AHU must run continuously or be interlocked to operate with the HRV/
ERV to avoid loss of balanced supply and exhaust airows.
2. In multi-speed AHU’s, balancing must be conducted on the most frequently used speed,
but the HRV/ERV may not remain in balance at other speeds. The same is true if the AHU
has multi-speed blowers.
3. In warm, humid seasons, continuous operation of the AHU causes evaporation from the
cooling coil, resulting in a loss of humidity control. Failure to operate the AHU with the
HRV/ERV may also result in condensation in the supply plenum and ducting.
4. Continuous operation of the AHU may cause drafts in the winter.
INDOOR AIR
SUPPLY AIR
OUTDOOR AIR
EXHAUST AIR
6 ft min
HVAC AHU
HVAC RETURN DUCT HVAC SUPPLY DUCT
*Note: Port congurations
are generic and do not
represent specic models
Supply Air Ducted to
HVAC Return Duct
Dedicated Exhaust
Grilles

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5. Backdraft or motorized dampers may be built into the HRV/ERV to prevent entry of
outdoor air during o cycles, but they should not be installed in the duct leading to the
outside.
Due to these reasons, it may be preferable to avoid a direct duct connection to the return of
the AHU and use an indirect approach instead.
Indirect Conguration
In this conguration, dedicated exhaust grilles remove stale air from bathrooms, laundry
rooms, and kitchens. Fresh air is supplied to a large-volume room, such as a great room,
family room, high stairway, etc. The forced-air system will draw the fresh air into the return
grilles of the AHU and distribute it throughout the house.The HRV/ERV and AHU may operate
independently with no impact on airow balance. A thermostat with a ventilation feature
is recommended to turn on the AHU periodically to assure proper supply air distribution
apart from heating/cooling cycles. This type of timer avoids the energy cost of operating
the blower fan in the AHU, and it also lessens the concerns about draft in winter and re-
evaporation from the AC coil in the summer.
HVAC AHU
HVAC RETURN DUCT HVAC SUPPLY DUCT
*Note: Port congurations
are generic and do not
represent specic models
HRV/ERV supply in
living/family rooms with
return grilles for HVAC
INDOOR AIR
SUPPLY AIR
OUTDOOR AIR
EXHAUST AIR
6 ft min

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Fully Integrated System
Fully Integrated System
The fully integrated system draws stale air from the return ducting of a forced-air heating
and cooling system, and supplies fresh outdoor air back into the return ducting downstream
of the exhaust connection. A minimum separation of 40” (1 m) is recommended between
the direction connections. See section “Interlocking the HRV/ERV to an Air-Handler/Furnace
Blower” on page 18.
A fully integrated system is a very common installation for most climates. It is important to
consider the following:
1. The balance of supply and exhaust airows can change from the AHU turning on and
o or operating at dierent speeds for heating and cooling cycles. It is recommended
that this conguration should be balanced on high speed with the furnace blower on.
2. For best operation, the AHU should be interlocked to run when the HRV/ERV is operating.
This prevents the supply air from short-circuiting to the exhaust air outlet.
3. Motorized dampers may be built into the HRV/ERV to prevent entry of outdoor air
during o cycles. It is not recommended to install separate motorized dampers in the
duct leading to the outside.
*Note: Port congurations
are generic and do not
represent specic models
HVAC AHU
HVAC RETURN DUCT HVAC SUPPLY DUCT
INDOOR AIR
SUPPLY AIR
OUTDOOR AIR
EXHAUST AIR
6 ft min
40 in. min

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Locating the Air Exchanger
The device must be located in a place where the temperature is always above freezing.
Choose a location for the device where the ducts will be short with minimal use of
elbows. This ensures that the system functions optimally.
Recirculation Using Fifth Ports (Optional)
Ducted
Run the duct to an area with clean indoor air, such as a hall or living room. This configuration
requires the use of the fifth collar that is shipped loose with the unit.
Non-Ducted
This configuration recirculates air surrounding the unit. It DOES NOT require the use of the
fifth collar. For this configuration to work properly, the unit MUST be located in area with
clean and fresh air.
Ducting Materials
1. Where ducting passes through concealed spaces (walls, ceiling-oor assemblies), the
ducting should be metal to oer less resistance to airow and permit duct cleaning.
2. Where the ducting remains permanently accessible, 5 to 10 feet of insulated exible
duct should be used between the HRV/ERV and all interior supply and exhaust registers
to reduce fan noise passing the ducting to interior spaces.
Connecting the Ducts
For the air exchanger to run optimally, place the ducts so they are as straight as possible.
Ducts should be kept short and have as few bends or elbows as possible to maximize airow.
Forty-ve degree elbows are preferred to 90-degree elbows. Use“Y” tees rather than straight
tees whenever possible.
All ducts going through unheated areas must
be insulated. The ducts between the exterior
vent hoods and the HRV/ERV must be insulated
and covered with a vapor barrier. See the next
section “Vent Hood Locations”.
These units are equipped with twist-in collars to
simplify the process of connecting exible duct
to your ventilator. Flexible duct is recommended
to provide vibration isolation between the unit
and duct system. Start by determining the
required duct length to reach each respective
collar, and cut as required. Remove each duct
collar by unscrewing them from the locking tabs.
Connect the ducts to the removed collars using
duct tape and exible duct straps. If rigid duct
is used, avoid attaching with screws to the duct
collars, as they may interfere with the damper
operations at each duct collar. Reinstall collars,
with duct attached, to their respective labeled
ports on the HRV/ERV by lining up locking tabs
and twisting on in a clockwise direction.

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Vent Hood Locations
(Manufacturer’s recommendation only. Also consult Local Building Code Requirement.)
Wall hoods (sold separately) should be located where accumulated debris can easily be
removed.
Note: Please refer to Installation Instructions packaged with wall hoods.
Fresh Air (Intake) Wall hoods:
• Should be located upstream (if there are prevailing winds) from the exhaust wall hood
• At least 6 feet (2 metres) from the exhaust wall hood
• At least 6 feet (2 metres) from dryer vents and furnace exhaust (medium or high-
eciency furnaces)
• At least 6 feet (2 metres) from driveways, oil ll pipes, gas meters or garbage
containers.
• At least 18 inches (457 mm) above the ground, or above the depth of expected
snow accumulation.
• At least 3 feet (1 metre) from the corner of the building.
• Do not locate in a garage, attic, or crawl space.
Exhaust Air Wall hoods:
• At least 6 feet (2 metres) from the fresh air intake wall hood.
• At least 18 inches (457 mm) above the ground, or above the depth of expected
snow accumulation.
• At least 3 feet (1 metre) 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.
INTAKE EXHAUST
6’ (2m)
recommended minimum
36” (1m)
recommended
minimum
36” (1m)
recommended
minimum
18” (460mm)
recommended minimum
18” (460mm)
recommended minimum
OUTSIDE CORNER INSIDE CORNER
Guidelines for locating intake and exhaust wall hoods
Note: Local codes may allow less or require greater distances between exhaust and intake
wall hoods.

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Locating the Exhaust Air Grilles or Registers (in systems with dedicated
exhaust ducting)
The exchanger has at least one exhaust air intake register. Exhaust air registers should be
placed where the humidity level is high, such as bathrooms, laundry rooms, and kitchens.
However, do not install in areas of extreme humidity such as steam showers, jacuzzi rooms,
indoor pools and solariums. Kitchen exhaust grilles must never be connected to the range
hood. Do not install an exhaust grille ducted to the HRV/ERV in a cooking area, defined by
the area above or inside a 45-degree angle projected outwards from the cooking element
closest to the exhaust grille. See figure below.
45° 45°
Cooking
Equipment Floor
Do not install above or
inside this area
Normally, the exhaust air intake register would be located on the first floor between the
bathroom and the kitchen, or in the basement near the bathroom. Avoid placing it in the
same room as a combustion device, such as a fireplace or furnace. The vent should be
installed high on the wall or in the ceiling. If installed on the wall, it should be placed at least
12 inches (30 cm) from the ceiling.
Adjustable grilles can be used to balance the flow rates. Field supplied balancing dampers
can be external to the unit to balance the amount of stale air being exhausted. These grilles
should not be adjusted after balancing the unit.
Locating the Supply Air Grilles or Diffusers
The fresh air diffusers should be installed in hallways, near the primary return for the forced air
system, or in larger common areas. Fresh air should not be distributed directly to bedrooms
as this increases the likelihood for discomfort in cold or humid weather. Diffusers should be
located in regions with reasonable distance from the exhaust registers to promote circulation
of the fresh air throughout the dwelling. The supply diffusers should be installed high on the

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wall or in the ceiling. If the diffuser is located in a common area, it is recommended to place
it on the ceiling so that it can better mix with the air in the room before reaching occupants.
This will improve comfort in cold weather. If diffusers are installed on the wall, place them at
least 12 inches (30 cm) from the ceiling.
Adjustable grilles can be used to balance the flow rates. Field supplied balancing dampers
can be external to the unit to balance the amount of fresh air being supplied relative to the
other diffusers. These grilles should not be adjusted after balancing the unit.
Zone Register Terminals (ZRT®)
Aldes patented* Exhaust Zone Register Terminals (ZRT®) are designed to introduce
flexibility and on-demand control to central ventilation systems. Used in both large
and small systems, the ZRT zonally regulates ventilation without the need for individual
fans. Each ZRT is a combination grille, register box, control damper, and optional flow
regulator(s). This unique combination provides up to four different control schemes
without the need for expensive pneumatic,
electronic, or DDC control systems.
By replacing static grilles in large central exhaust
systems, the ZRT-1 model provides on-off control
for on-demand ventilation. The optional Constant
Airflow Regulator can be installed in the ZRT-1’s
extended duct collar to place a maximum flow
limit on each terminal. The ZRT-1 does not work
well when continuous low ventilation is needed;
therefore using the ZRT-1 in a location such as a half
bath is the best application of use.
The ZRT-2 model can be used for combination low-flow indoor air quality ventilation
and on-demand high-flow spot ventilation using the same central fan system. This is
achieved by integrating a minimum Constant Airflow Regulator directly into the damper
sub-assembly. With the damper completely closed, the factory-calibrated will still allow
steady, low-continuous ventilation during fan operation. When other ZRT are opened
for on-demand control of spot ventilation, the closed ZRT-2 will maintain the specified
low-continuous rate through the minimum. By opening the ZRT-2’s control damper, the
low-flow is removed from the air stream, allowing either controlled (optional using a
second) or full maximum-boost ventilation. Using the ZRT-2 in a location such as a full
bathroom is the best application of use.
Humidity Control
Tight, well-insulated homes may have high indoor humidity levels during the heating
season. High humidity will be apparent from visible condensation on windows. The amount
of window condensation will increase as outdoor temperatures drop.
ZRT-1
*U.S. Pat. No. 7,766,734 Canada Pat. No. 2,570,948

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Your HRV/ERV will reduce indoor humidity levels when outdoor air is drier than indoor air.
This usually occurs during the heating season when outdoor temperatures are less than 59°F
(15°C), as shown in the following table:
RECOMMENDED RELATIVE HUMIDITY TO PREVENT INDOOR CONDENSATION*
OUTSIDE AIR TEMPERATURE RELATIVE HUMIDITY
50°F (10°C) 55%-60%
32°F (0°C) 50%-55%
14°F (-10°C) 45%-50%
4°F (-20°C) 40%-45%
-22°F (-30°C) 30%-40%
*Values according to the type of construction and fenestration of your house.
ASHRAE 62.2 standards recommend maintaining a relative humidity rate between 30%
and 60%. The average person is comfortable between 30-50% relative humidity (RH).
Aldes oers several wall controls with a dehumidistat function. Please refer to the wall control
user guide for detailed information.
IV. INSTALLATION
What’s Included
Verify that all parts have been included with the shipment. If any parts are missing, notify
your distributor as soon as possible. Note: Quantity of parts may vary depending on model
of air exchanger (e.g., single or double drain)
• Heat or Energy Recovery Ventilator
• Parts Bag
» (4) - springs
» (4) - hooks
» (8) - sheet-metal screws for hooks
» (4) - wood screws for hooks
» (2) - 3/8”-1/2” universal drains
» (2) - seal grommets (optional)
» (2) - nuts
» (4) door caps (to plug static pressure taps)
» Assembly chains
» Drain tubing
» Tee connector for drain tubing (quantity varies according to model)

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The following are typical items (sold separately) that may be used for standard installation.
Contact your local distributor to order Aldes items.
» Digital Multifunction Controller (P/N 611242-FC)
» Electronic humidistat with LCD (P/N 611227)
» Humidity Control (P/N 611224)
» 20/40/60 Minute Timer (P/N 611228)
» Speed Control (P/N 611229)
» Mode Control (P/N 611230)
» Wall-Mount Bracket (P/N 608575)
» Interior exhaust grilles
» Supply diusers
» Sleeves or register boxes for interior supply and exhaust
» Exterior wall hoods for supply and exhaust
» Insulated duct
» Uninsulated duct
» MR Modulo (constant airow regulators)
Mounting the Unit
The air exchanger is designed to be suspended from a structure or mounted against a
wall using the wall-mount bracket (sold separately, P/N 608575).
To suspend the device, affix the four mounting brackets in the upper corners of the unit.
Using the chains and the springs, suspend the air exchanger from the joists.
Suspended by chains Wall-Mount Bracket (P/N 608575)
Note: Models H/E190 and H/E240 cannot be installed using the wall-mount bracket.

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Drain Connections (HRV Models only ERV Models do not require
plumbing.)
Regardless of mounting method, the device should be installed level to ensure that
condensation (produced during a defrost cycle) drains from the unit. The water should flow
into a nearby drain or bucket.
CAUTION: HRV must be installed level to ensure proper condensate drainage. Due to the
broad range of installation and operation conditions, consider the possibility of condensation
forming on either the unit or connecting ducting. Objects below the installation may be
exposed to condensate.
The HRV has two pre-punched holes for the drain. Insert the drain spout through the hole in
the drain pan. Be sure to install the “O ring” to seal each spout to the pan. Hand tighten the
washer and lock nut that holds the drain spout in place.
Construct a P-Trap using the plastic tee connector. Cut two lengths of drain hose and connect
the other ends to the two drain spouts. Position the “T” fitting to point upward and connect
the drain line. Tape or fasten the base to avoid kinks.
Connect the drain hoses to the building’s drainage system, as shown in the following
diagrams. No hard pipe connections to the unit.
After the drain connection is complete, pour a cup of water into the drain pan of the unit.
This creates a water seal that will prevent odors from being drawn up the hose and into the
fresh air supply of the HRV.
CAUTION: Drain trap and tubing MUST be below bottom of door with 1/4” per foot
downwards slope away from the unit.
Connect to the building’s
drainage system
End side to connect to the
3/8” - 1/2” universal drain

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Interlocking the HRV/ERV to an Air-Handler/Furnace Blower
Installations sharing duct with air-handling units or furnaces operate most effectively when
those units are powered on to properly distribute the fresh air provided by the ventilator
throughout the home.The HRV/ERV has the ability to interlock with external equipment, such
as an air-handler or furnace blower, to activate or deactivate that equipment as necessary.
The unit’s terminal strip has two fan interlock options via connections 6, 7, and 8 on the
terminal strip. Connection 6 is NORMALLY CLOSED, and connection 8 is NORMALLY OPEN.
Connection 7 is the common connection for both 6 and 8.
For the HRV/ERV to operate only in conjunction with the Air-Handler/Furnace, do the
following:
1. Connect the HRV/ERV as illustrated below. Refer to the AHU Owner’s Manual/Wiring
Diagram for instructions on connecting to the fan start relay.
Note: It is the same process as connecting the fan control on a thermostat.
2. Ensure the air-handler/furnace blower motor is operating whenever the HRV/ERV is
ventilating.
Note: Consideration must be given to competing airows when connecting the HRV/ERV in
conjunction with an Air-Handler/Furnace Blower system.
Connecting the HRV/ERV
Unit Wiring
The HRV/ERV has the ability to operate in either master or slave mode depending on how the
unit is going to be used.
Master mode is the default configuration for the unit. In master mode, the HRV/ERV can be
used to activate the blower in the air handling unit. This method of control is recommended
with partially or fully integrated systems (see pages 8 and 10) to ensure proper distribution
of fresh air through the HVAC system. In Master mode, the default mode of operation is low
speed recirculation. This is desirable when no central system is present, and continuous
ventilation is not required.
TERMINAL BLOCK
87 6 21
345
HVAC AHU
START
COM
NC
GRN GRN
RED
BLK
NO
WHT

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19
In slave mode, an external device or switch will dictate when the unit will operate. This is the
case for VentZone® Systems, use of third party thermostats with built in HRV/ERV controls,
and use of external third party switches that are used to enable/disable the unit. Installations
requiring a switch to enable or disable the unit via a wall switch will need to be placed into
slave mode.
Note: While in slave mode, the recirculation function is replaced with the standby, or OFF,
condition. Aldes controllers which have this function will continue to work in all other modes,
but the recirculation mode is replaced with the standby mode. If recirculation is required, but
the HRV/ERV must be OFF by default, then install the unit in master mode and use the digital
multifunction control 611242-FC to put the unit into standby mode.
Enabling Slave Mode
In order to enable slave mode on your unit, you will need to move a jumper on the unit’s
printed circuit board. This can be done without any special tools following the directions
below.
Suggestion: is easiest to do this prior to installation, on a table with the unit on its back.
1. Disconnect the unit power cable to avoid electric shock or damaging the PCB.
2. Remove the unit’s terminal block by rmly pulling it straight out.
Removing the unit’s terminal block

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20
3. Using a Phillips head screwdriver, remove the three screws that secure the metal control
board cover.
Removing the screws
4. With the cover removed, locate the jumper pins on the control board. These are
positioned just behind the motor speed dials on the front of the unit.
Locating the jumper pins