UltimateAir ER80M Installation and operating instructions

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Introduction
Welcome to the most advanced whole-house air filtration & Energy
Recovery Ventilation on the market today.
Energy Recovery Ventilation (ERV) means this machine captures
temperature and a portion of the moisture from the stale, outgoing air and
transfers it to the incoming Fresh Air. No matter what the season, you will
be comfortable breathing fresh clean air.
In addition to having an energy transfer rating of 99% ASE, the UltimateAir
ER80M moderates indoor humidity in the winter and turns away outdoor
humidity in the summer.
•Filtration 95% at 1.8 microns (MERV 12)
•Exceeds ASHRAE 62.2
•Variable Airflow with Quiet operation
•Low/Easy maintenance
•Automatic Frost Prevention to 10° F
•No Condensation Drain needed
•2-year Warranty, Extended Available
•Brushless EC Motors with Sealed Ball
Bearings
•EconoCool™ (brings in cool, filtered night
air in summer)
•Up to 75% moisture transfer capability
(depending on season)
•Optional Transmitter for real-time
changes in indoor air pressure
•Optional CO2 monitor adjusts airflow for elevated CO2
•Compatible with many IAQ monitors
•Filter service indicator
•Fully insulated

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Specifications
All models include pre-filter, patented energy transfer/filtration material, 3 motors,
fans, variable blower speed control, “check filter” indicator light, & auxiliary IAQ control
inputs.
These controls allow you to adjust the airflow as needed to maintain a comfortable level
of fresh air. The “check filter” indicator light is designed to let you know when to clean
or replace the energy transfer/filters.
Model ER80M: UL1812 & CSA 22.2 Listed
Model ER80M-E: Non UL Listed
Airflow Capacity ~30– 100CFM
Apparent Sensible Effectiveness (ASE) 99%... Testing In Accordance with CAN/CSA-C439
Heat Exchange Type Patented rotary random matrix
polymer
Filtration material 95% effective at 1.8 microns
(MERV 12), replaceable, with separate washable
aluminum pre-filter.
Frost Control Automatic Frost Prevention @ 10° F.
Programmed to automatically prevent frosting down
to approximately 10˚F. During this mode, the Wall
Dial Green Light will be flashing. Electric or Geo-
thermal Preheating Available as a frost control
option.
Electrical Ratings 120 VAC, single phase, 3 AMP max no preheat 6 AMP max with preheat.
Fuse 10Amp, 125Volt
Dimensions
23¼ in. H x 23 ½ in. W x 12 ½ in. D
(59.1 cm H x 59.7 cm W x 31.8 cm D)
Unit Weight 60 lb (27 kg)
Mounting May be mounted vertically or horizontally, suspending from ceiling joists, or on a
shelf in conditioned mechanical spaces such as attics, basements, and utility rooms.
Four duct collars included are 5” in diameter.
Maintenance Check Filters/Wheel every 6 months.

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Performance Data
Fan
Power The power curve was generated using the average airflow rate
over all four ducts.
Note: Curves are generated from actual test data and should only be
used as general guidelines. Actual results may vary.
CFM POWER Watt/CFM Range
21 15 0.70 LOW
27 16 0.60
32 19 0.59
37 23 0.62
42 28 0.66
50 35 0.70
55 43 0.77
60 50 0.83 MED
66 54 0.82
72 67 0.93
75 80 1.06
83 95 1.14
88 109 1.24
91 125 1.37
95 137 1.44 HIGH
5
25
45
65
85
105
125
145
165
10 20 30 40 50 60 70 80 90 100
Power (watts)
FLOW CFM
Power vs CFM MERV12 FILTER
IN WC CFM WATT
0.1 92 156
0.2 90 154
0.3 87 152
0.4 85 152
0.5 82 149
0.6 80 147
0.7 77 144
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
75 77 79 81 83 85 87 89 91 93 95
IN WC
FLOW CFM
Fan Curve @ High Flow

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Installation & Ducting
We recommend a licensed HVAC technician install this product, because of
complex considerations such as airflow dynamics and condensation issues.
Please read these instructions carefully before beginning any installation
procedure. Failure to follow them closely may reduce ventilation
effectiveness, cause a hazardous condition, and/or invalidate your
warranty. Installation by non-licensed HVAC personnel may void the
warranty.
Unpack your RecoupAerator and check to be sure the following items are
included and undamaged:
•UltimateAir RecoupAerator ER80M Energy Recovery Ventilator
•Wall mount control dial pre-wired for test run.
•Power cable.
•Aux cable for accessory options.
•Literature package with this manual, & warranty registration.

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
When Installing:
1. Test Run the RecoupAerator by plugging into a power outlet, and
adjust the blower speed with the included Wall Dial. Familiarize
yourself with the intake and outlet duct configuration and installation
dimensions. Decide how you will mount the unit. We recommend
ACCA’s manuals D & J for proper load calculations and duct sizing.
2. After installation is complete, fill in contractor’s name and phone
number on the last page of this manual, and please complete the
Warranty Registration to validate the installation.
CAUTION
Always disconnect the power source
before wiring to prevent electrical shock
and/or equipment damage.
Electrical requirement: 120 VAC, single phase, 3 AMP max
no preheat or 6AMP max with preheat
The RecoupAerator is equipped with a three-pronged grounding plug for
your protection against shock hazards and should be plugged directly into a
properly grounded, 120V, three-pronged wall receptacle. If only a two-
pronged outlet is available, it must be replaced with a properly grounded
three-pronged receptacle in accordance with the National Electrical Code
and local codes and ordinances. A qualified electrician should do this work.
Use proper circuit protection. If you have any doubts about the grounding in
your house, contact a qualified electrician.

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Positioning the RecoupAerator
We recommend the RecoupAerator be mounted in a conditioned space, as
this will affect the performance and longevity of the unit. If the
RecoupAerator is installed in an unconditioned space, the section(s) of
inside ducts, and possibly the unit itself may need to be insulated from the
unconditioned environment.
Position the RecoupAerator in a location convenient to existing
ducting. If possible, locate equipment away from the quiet rooms (e.g.,
bedrooms). Avoid directly suspending the RecoupAerator from the mid-
span area of joists. This can result in structural vibration. Allow adequate
space for maintenance and service of the RecoupAerator.
Vertical/Wall
Top and Bottom Exhaust shown
Top Exhaust
Bottom Exhaust

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Horizontal Ceiling

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Ducting to Outside
Note: The ducts to the outside must be insulated.
The collars labeled “to Outside” must be ducted
through the exterior of the building, and the
following precautions should be taken.
1. The ends of the two ducts should be as far
apart as practical (at least six feet, either
horizontally or vertically) to minimize
re-circulation of the exhaust air.
2. Terminate the ducts using exterior weather
hoods. Ensure that the exterior weather caps
have wire mesh to keep out birds and debris.
Angle the weather caps down and away from
each other and place them away from exhaust
vents for other appliances such as dryers or
hot water heaters. Avoid placing air intake
vents near exhaust vents from adjacent
buildings or sources of automobile exhaust.
Never place an air intake in a garage, for
instance.
3. Make sure that the joints between the
termination vents and the walls are weather
sealed.

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Connecting Duct Work
Ducting between the RecoupAerator and the outdoors must be insulated
and sealed with a vapor barrier to prevent condensation.
1. Locate the three tabs at each duct hole and bend them ‘out’.
2. Apply a bead of silicone or general sealant inside the duct opening
where the crimped end of a male 4” duct starter will intersect and
insert the fitting into the opening until it stops against the inside
wall (approximately 1”). The sealant is to create an air seal
between the ERV duct opening and the inserted duct. Any male
crimped 4” transition fitting can be used. UltimateAir
recommends a minimum of a 5” to 4” taper reducer at all four
collars. Some installations will require 6” to 4” starting out.
Minimum trunk duct diameter is 5”.
APPLY SEALANT
AROUND COLLAR
INSTALL TEK SCREWS
TO SECURE

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
3. Use the included tek screws to attach the collar to the ERV metal
tabs through the pre-drilled pilot holes for rigid attachment.
Insulate over and seal to the case if duct requires insulation.
General Ducting Guidelines
To ensure maximum airflow, use the largest practical duct for the
installation. Design and installation of ductwork must be in accordance with
HVAC standards and regulations to allow required quantities of fresh air to
circulate through the building. Insulated flex ducts tend to reduce air noise
levels but add airflow resistance, and galvanized ducts provide the least
resistance to airflow, but may amplify noise. Duct connections inside each
building will vary. The outside duct connections are the same for most
installations and must be insulated.
The duct installation should follow the following standards:
A. Mechanical integrity The system will remain as built for the life
of the building, without developing leaks, obstructions, or
insulation failures.
B. Freedom from leaks All air moved by the air handler will be
drawn from and delivered to the intended conditioned spaces.
C. Proper insulation Conditioned air should Not exchange heat
with Unconditioned spaces.
A licensed HVAC contractor should do the duct design calculations.
To minimize backpressure: Make the intake and exhaust duct runs as
short and straight as possible. Use 45-degree elbows instead of 90-degree
where practical. Where flex duct is used, make sure that no “crimping” or
“collapsing” of the duct occurs. Stretch flex duct evenly to avoid air
restriction. Use “Y” connections instead of “T” connections wherever
possible. Size ductwork according to recognized industry standards such
as Manuals D and J, published by the Air Conditioning Contractors of
America (ACCA).

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
•Use the minimum length of flexible duct possible
•Minimize any noise transmission through the ducts by using a short
run (2-3 ft) of insulated flex duct on duct trunks coming from
the unit and going to the inside of the house.
•Position outdoor fresh air intakes away from known sources of
pollution. A six-foot separation is the recommended distance
between the Fresh air intake and stale air exhaust. Locate
Intake and Exhaust 40 inches from the corner of the building,
and above the projected snow plane.
•Position inside grill/register vents so that fresh air does not blow
directly onto occupants or the thermostat.
•Fasten joints between duct components with screws, sealant, and/or
rivets and wrap them with metal foil duct tape to ensure no
leaks.
Making a Noisy Duct System Quiet
A. Run at the lowest flow setting necessary for fresh air requirements.
B. When installing the unit, allow for a three-foot section of insulated
flexible duct to go from the starting collar on the unit to the rest of
the ductwork (on all four collars).
C. Locate the unit farther away from the source of the noise pollution
area (if the unit is close to a living room vent where the noise is too
loud) This will allow the noise to dissipate in the longer duct length.
Notes on Installing non-metallic flexible duct
Knife or Scissors/Wire Cutter: Use knife or scissors to cut duct
wall. Use wire cutters to cut the spiral wire helix.
Foil Tape: Use only tapes that have been listed and labeled to
Standard UL 181B and labeled “181B-FX”. Use two wraps of 1½”
minimum width.
Draw Band/Plastic Clamp/Clamp Tool: Use for low-pressure
systems up to four-inch wg (diameters of three to 10’) and up to

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
two-inch wg (diameters of 12” and over). To achieve proper
tensioning of clamp, set clamp to max tension setting.
•Support hardware (e.g., couplings, and fittings) independently of
flexible duct using elbows or other devices.
•Repair damaged vapor barrier jacket. If internal core is
penetrated, replace or splice flexible duct.
•Install duct fully extended along straightest path possible.
•Flexible duct shall be supported at manufacturer’s recommended
intervals, but at no greater distance than five feet, and the
maximum permissible sag is ½” per foot of spacing between
supports.
•In no case will the hanger or saddle material supporting the
flexible duct be less than 1½” wide.

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Wiring and Controls
CAUTION
Before performing any service, switch off the unit and disconnect power.
You must disconnect power by either unplugging the unit or by switching
the applicable breaker in your breaker box to off. Otherwise, the main
power to the unit will remain hot and could cause serious bodily harm.
Wall Dial Flow Control –Included
The wall mountable Flow Dial Control may be located in any location by
extending the Ethernet style cord attached at the back of the dial. Please
use an appropriate 6-conductor 20/22 gauge wire.
Follow all applicable electrical codes.
Before relocating the Flow Dial, connect the Dial to the unit to test run for
proper operation.

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Factory Default Settings
The Model ER80M may be wired to run in a number of different ways. This
section of the manual describes each benefit option and shows the wiring
procedure to accomplish them
Airflow. This unit contains two blower motors, each independently
controlling the airflow coming into the building (Blower 1, supply), and
leaving the building (Blower 2, exhaust). The unit has the capability of
lowering the airflow from the building going to the outside by a selectable
set of offset jumpers on the three-motor control board. Factory settings
provide for equal airflow both coming into the building and exiting.
Input. The RecoupAerator comes equipped to handle several different
types of control input. From the factory, the RecoupAerator is wired with
the Flow Dial Control, unless otherwise specified at the time of order.
EconoCool. This unit comes with an economic ‘night’ flush feature. Please
see the ‘econocool’ section in this manual for further detail.
The Boost feature allows for an override of the RecoupAerator’s variable
speed ability. Boost is useful for running at maximum airflow using a low-
voltage signal input such as the optional Boost Timer. Typically, Boost
inputs include bathroom timers, CO2monitors, and humidity monitors.
Note -All Switch relays must be capable of switching LOW VOLTAGE
(24vac). High Voltage Contacts (110VAC) will often fail used with 24VAC
because of the lack of required high voltage arcing to keep them clean and
functional.

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Wall Control and Aux Wiring Designations

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Main low volta
g
e control dia
g
ram/desi
g
nations

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Low Voltage Accessories:
Bath Boost Timer 1.4 VA
The UltimateAir ER80M is designed with
the latest low voltage control technology
using a 20 volt-ampere transformer
(120Volts AC step-down to 24Volts AC).
Note the Model ER80M uses 4 VA under
normal operating conditions, thus
leaving 16 VA for optional accessories.
When designing your control strategy,
keep in mind the maximum 20 VA power
limit.
CO2 Sensing Switch 3 VA

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
EconoCool™
Each RecoupAerator is EconoCool™ equipped, so the outside air
during summer months may be utilized to cool your home or business
(e.g., during the night), thereby providing Energy Savings and Comfort.
The built-in temperature sensor on the incoming air stream
automatically stops energy recovery between 55° and 70° Fahrenheit.

Model ER80M :: ultimateair.com :: Athens, Ohio 45701 :: 740.594.2277
Connecting with a Furnace/ AC Air Handler
For this purpose, never use a device that cycles the main power to the
Ventilation Unit. Cycling main power ON/OFF is detrimental to the
system electronics and will void the warranty.