Specifications

4
Pro-Series
Installation
Installation of the Pro-Series is a relatively simple proce-
dure, but should be undertaken in a methodical fashion,
following the directions outlined in this manual.
Note: Prior to starting unit, open access door and;
Remove loose parts shipped inside;
Remove wheel shipping restraint (Pro-30 thru
Pro-90 only)
The installation location should be chosen to provide
easy, convenient access. As with all mechanical equipment,
routine maintenance and inspection is necessary. Choose a
site from which connecting duct is visible. Avoid locations
that are near or downwind of smoke, fumes or exhaust
outlets of other equipment. The front access panel should
have clearance space equal to the depth of the unit to allow
for service.
Once the installation location is determined, the unit
should be skidded and closely examined. Any defects or
problems should be reported to ERV Systems Incorpo-
rated immediately.
Several ducting arrangements are possible. Make sure
your duct plans match the Pro-Series duct opening arrange-
ment. (See Unit Configuration, pg. 5)
The Pro-Series unit can be ordered for indoor or out-
door installation. An outdoor unit is identified by the
existence of two hoods that are shipped on top of the
unit. It will be necessary to attach the outdoor air intake
hood (larger one with filter rack) and the exhaust air outlet
hood (smaller one with damper) on their designated open-
ings (see figure 6a-d). The indoor unit is identified by a
rectangular duct shipped on top of the unit. This indoor
intake duct must be installed over the outdoor air intake
opening (see figure 6a-d). Use the given alignment holes
to place the hood or duct in the correct position.
If the unit is a rooftop unit, it may be installed on a curb.
If ERV Systems supplies the curb, it is shipped separately.
The curb must be installed before a rooftop Pro-Series
unit can be placed. Proper care should be taken to ensure
correct placement of the curb before holes are cut for duct-
ing through the roof itself. Effective waterproofing of the
rooftop interface is necessary. That means sealing around
the roof curb to prevent any leakage into the building or
the air ducts. The curb and unit must be installed and
operated in a horizontal position.
If the unit is not installed on the roof, then a concrete or
paved pad to support the Pro-Series must be provided.
The pad must be of sufficient height and located to assure
proper water drainage in any weather.
Inspect the interior of the unit for any damage. On the
floor inside the unit is the outdoor air metal filter. This
filter is to be installed at the outdoor air intake opening
after the hood (outdoor Pro-Series only) has been attached.
On the Pro-Series 30, 50, and 75 remove wheel shipping
restraint.
The ERV energy recovery wheel is mounted horizontally
inside the Pro-Series. The motor and belt arrangement
that turn the wheel are visible next to the wheel at the access
panel opening. The motor wires running to the control
panel are attached by a quick release disconnect. The quick
disconnect must be separated before sliding out the wheel
cassette. The wheel cassette need not be moved for
installation or hookup, but it can be pulled out for easy
maintenance and inspection purposes.
When the unit has been placed in its permanent location,
ductwork should be brought up to and attached to the
unit. Ductwork may be flanged and screwed to the unit
face for horizontal connections. Ductwork for a vertical
unit should be flanged and gasketed level with the curb to
allow the unit weight to form the seal. Penetrations
through the unit floor must be avoided to prevent any
water penetrating into the cabinet.
If the unit has been ordered with electric preheat, it is
shipped installed. The main power connection to the unit
is made at the electric coil instead of the unit control panel.
For the indoor version of the Pro-Series, the electric coil
should be externally insulated after installation.
On the front right side of the Pro-Series is the unit
identification tag. It states the electrical requirements for
the unit. (If electric preheat option has been ordered, the
unit ID tag is located on the heater.) Make sure the power
provided to the installation site matches that required by
the unit. Note and verify that voltage/phase/capacity
needed and provided are the same, and the line voltage
must not vary more than +/- 5%.