IMPORTANT - PLEASE READ THIS
MANUAL BEFORE INSTALLING UNIT
CAUTION
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 Heat Recovery
Ventilator (HRV) or Energy Recovery Ventilator (ERV) by
using the balancing procedure found in this manual.
It is always important to assess how the operation of any
HRV/ERV may interact with vented combustion equipment
(ie. 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!!!
Installing Contractor
Telephone / Contact
Serial Number
Installation DateModel
* LEAVE FOR HOMEOWNER
NOTE: Due to ongoing research and product development, specifications,
ratings and dimensions are subject to change without notice.
A Heat Recovery Ventilator (HRV) is designed to
provide fresh air into a building while exhausting an
equal amount of stale air. During the winter
months, the incoming cold fresh air is warmed by
utilizing the heat recovered from the stale air
before it is exhausted to the outdoors. During
summer months when the indoor space is air
conditioned, the Heat Recovery Ventilator will help
in cooling the incoming fresh air with the stale air
that is being exhausted.
ERV - Enthalpic Paper Core
An Energy Recovery Ventilator (ERV) is designed
to provide fresh air into a building while exhausting
an equal amount of stale air. An ERV is designed
for use in warm humid areas with heavy air
conditioning use. The ERV will transfer both
sensible and latent heat from the incoming fresh air
to the outgoing stale air thereby reducing the load
(due to ventilation) on the air conditioning system.
ERVs are not suitable for climates where the
temperature drops below -4˚C (25˚F).
Installation
Installation
• Location
• Mounting the HRV/ERV
• Electrical
• Installing the Drain Line and "P" Trap
Installing Air Ducts .................................................. 19
• Outside Weatherhoods
• Locating the Weatherhoods
•
Installing Ducting from Weatherhoods to the HRV/ERV
• Warmside Ducting
Supply Air Ducting ..................................................... 20
Stale Air Exhaust System .......................................... 20
Dampers and Grilles .................................................. 20
All Heat Recovery Ventilators carry a Lifetime
Warranty on the heat recovery core and a 5 (five)
year replacement parts warranty.
All Energy Recovery Ventilators carry a 5 (five) year
warranty on the energy recovery core and a 5 (five)
year replacement parts warranty.
During the warranty period, if any core experiences a
failure or perforation caused by normal use while
owned by the original purchaser, a replacement core
(FOB our plant) will be supplied at no expense.
Maintenance
Maintenance Routine For HRV .................................. 27
Maintenance Routine For ERV .................................. 28
The core in an HRV (Heat Recovery Ventilator)
transfers heat from one air stream to the other. This is
called sensible heat. The term ERV (Energy Recovery
Ventilator) is usually used to describe a unit with an
enthalpic core that transfers moisture as well as heat
from one air stream to the other. This (moisture
transfer) is called latent heat.
Enthalpic - what does it mean?
Enthalpy is the term used to describe the energy
content of air. This energy is a combination of the
sensible and latent heat. Therefore, a core which
transfers energy is called an enthalpic core.
Is an ERV better than an HRV?
NOT NECESSARILY!! In cold climates such as most
of North America, an HRV works better than an ERV.
This is because the air inside the home during the
winter months will be more humid than the outside air.
An ERV would transfer the latent heat (humidity) from
the exhaust air back into the incoming airstream. This
will aggravate moisture problems in the home and
encourage the growth of mold and mildew. If the air in
the home is too dry for comfort, an ERV will not help. A
humidifier should be used to increase the humidity to
a comfortable level.
and damp situation. In fact, about 2/3 of the energy
used by the air conditioner system is to remove
moisture. Therefore, when ventilating in the summer,
less moisture brought into the home means less work
for the air conditioner, and energy savings for you.
During the winter, an ERV recovers some humidity
from the exhaust air, reducing the need for humidification
if the required ventilation rate would make the home
too dry.
,
What's the difference between this type of
core and a rotary type?
Here's a list of characteristics of the fixed plate core.
1. No rotating parts, so maintenance is easy and the
unit lasts a long time.
2. It is very flexible in terms of installation.
3. The core can easily be changed.
4. Because the supply and exhaust air streams are
completely separate, there is very little cross
leakage of any dust or germs.
Can the core become clogged with dust?
Because the surface of the core is a turbulent flow
area, dust sticks to it easily; however, because the
inside of the element is a laminar flow area, virtually no
dust sticks to it.
Where do you use an ERV instead
of an HRV?
An ERV is recommended for warm, humid areas with
heavy air conditioning use. As there is no defrost in an
ERV it is not recommended for areas where the
temperature drops below -4˚C (25˚F).
Why transfer moisture in the summer
(cooling season)?
The enthalpic core will allow moisture to be transferred
from a humid air flow to a dry air flow. This property is
useful in the cooling season if an air conditioning
system is used to lower the indoor humidity. You will
then have dry, cool air in the exhaust of the ERV, and
warm humid air in the supply stream. With these
conditions, the ERV will be able to transfer the
moisture and heat of the supply air to the exhaust air.
In this way, the ERV will supply to the home air which
is cooler and drier than outside. Remember that an
ERV is not a dehumidifier, and on its own will not take
moisture out of the air.
So why use an ERV?
A properly operating air conditioner will not only lower
the temperature in your house, but will also lower the
humidity level. This prevents an uncomfortable cold
What is the maintenance?
About once a year you should use a vacuum cleaner
to remove the dust from the core's surface. DO NOT
WASH WITH WATER!!
Is an air filter needed?
To prevent clogging of the core, an air filter should
always be installed on the supply and exhaust sides of
the core.
How much ventilation do I need?
During seasons when your windows and doors are
closed, the ERV should operate continuously when
the dwelling is occupied, and either continuously or
intermittently when not occupied.
For most installations the ERV will normally 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 there is a large number of
people present (some may be smoking), the unit
should be switched to high speed.
Your ERV may be equipped with automatic or manual
switches, but all ERVs will have a manual speed
control override.
3
4
Model 95MAX
ENGINEERING DATA
THERMALLY CONDUCTIVE, PATENTED ALUMINUM CORE
The cross-flow heat recovery core transfers heat between the two
airstreams. It is easily removed for cleaning or service.
MOTORS AND BLOWERS
- Each air stream has one centrifugal
blower driven by a common PSC motor. 5 speed fan operation.
120 VAC, .8 Amps.
FILTERS
MOUNTING THE HRV
- Washable air filters in exhaust and supply air streams.
- Four threaded inserts at corners of the
cabinet designed to accept PVC reinforced polyester straps that are
supplied with the unit.
DEFROST
CASE
- Recirculating defrost system.
- Twenty gauge prepainted galvanized steel (G60) for superior
corrosion resistance. Insulated to prevent exterior condensation.
Drain connections 2 - 1/2" (12 mm) OD.
CONTROLS
WEIGHT 52 lbs. (23.6 kg) SHIPPING WEIGHT 56 lbs. (25.4
- ControlAir 15
kg)
DIMENSIONS 95MAX
PERFORMANCE
Net supply airflow in cfm (L/s) against external static pressure