PARMAIR EXIUS JrS User manual

JrS and JrV
TECHNICAL SPECIFICATIONS AND
IMPLEMENTATION GUIDE

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PARMAIR EXIMUS JrS and JrV
1. GENERAL
Healthy indoor air quality depends on efficient ventilation. The types of work people do at home
and construction methods have changed a lot over recent decades.
Today’s well-insulated homes need controlled ventilation, which increases the comfort and
congeniality of living conditions. Adequate ventilation expels harmful gases and odors arising
from the structure, plumbing fixtures, interior finishes and cooking. Good construction methods
and continuous and adequate ventilation are necessary in order to prevent damp penetration.
Waste air needs to be continuously extracted from the kitchen, bathroom, dressing room, sauna
and shower areas. Ventilation should be designed so that the total air extracted is normally equal
to half the volume of air in a dwelling (half of the air in the house needs replacing every hour,
40% by ventilation and 10% by leakage). Fresh air is blown into bedrooms and living areas and
into the sauna and adjoining room with fireplace.
Ventilation consumes approximately 30% of a dwelling’s energy. The Eximus Jr Unit allows the
heat from extracted air to be transferred to incoming fresh air. By means of a ventilation system
equipped with heat recovery, you can save up to 70% of the cost of operating a system that
simply extracts air.
For ventilation systems to meet the sound level requirements published at the start of 2000,
ventilation units must not directly adjoin living areas. When the unit is fixed to a wall, there
should be no vibration transferred to the structure.
The dwelling’s ventilation system should be carefully planned and built according to plan.

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PARMAIR EXIMUS JrS and JrV
2. TECHNICAL SPECIFICATIONS
Unit dimensions Height 600 mm
Width 585 mm
Depth 430 mm
Voltage 230V, 50Hz
Fans (2) DC fan 120W
Reheating 2 x 0–600W using electricity, electronic
regulation as necessary, model Eximus JrS
800W using domestic hot water, model Eximus JrV
Preheating 0–700W electronic regulation as necessary
Condensation water connector CU pipe, external ∅15 mm in rear corner
Maximum air volume 140l/s (50Pa)
Temperature efficiency ratio Approx. 60% (qV=60dm3/s)
3. UNIT AIR EXHANGE VOLUME FLOW
Eximus Jr air exchange volume flow rate
0
50
100
150
200
250
300
350
400
0
20 40 60 80
100 120 140 160
Air volume flow rate (l/s)
Static pressure [Pa]
Extract
Supply
Diagram 1. Air exchange volume flow rate (with EU4 intake/extract filters)

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PARMAIR EXIMUS JrS and JrV
4. OPERATING PRINCIPLES OF THE EXIMUS UNITS
The Parmair Eximus Jr Units are equipped with heat exchangers consisting of thin aluminum
plates. Extracted air and incoming air are separately fed into alternate slots between the plates.
Heat from the extracted air is transferred to the incoming fresh air through the plates without
mixing the airflows.
Extracted air is drawn from the house through ventilation ducts into the unit where the air is
filtered, and passes from the heat exchanger into an exhaust duct and then outside.
Incoming air is drawn into the ventilation unit from outside through another duct and is finely
filtered (Filter EU7) before heat transfer occurs, after which it passes through incoming air ducts
into the various rooms in the house.
When temperatures fall below zero, moisture condensing from extracted air collects on the
surface of the heat exchanger. Because of this, the heat transfer parts of Parmair Eximus Jr Units
are equipped with an electronically controlled antifreeze system that prevents the heat exchanger
from freezing under any circumstances, thus maintaining the ventilation in balance.
The unit has a condensation pipe to remove water condensed from the extracted air. The water
runs to a floor drain through a hose or pipe.
When temperatures fall well below zero, incoming air is still cold despite the heat exchanger.
For this reason, the unit comes with a reheating element. The desired temperature of incoming
air can be set from the control panel. The electronically controlled heating element helps the unit
maintain the desired temperature.

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PARMAIR EXIMUS JrS and JrV
5. ELECTRICAL CONNECTION DIAGRAM
The connections are according to the following diagrams
(Diagram 2 for the JrS Unit and Diagram 3 for the JrV Unit).
Parmair Eximus JrS
Extra
43 1
321
J1 J2 J3
230
V
Remote
control
Remote
control
12 34 12
34
J13
J11
J12J14
Master switch
T50 T50
C2 1
C21
Thermal
shield
Thermal shield
Reheating 2x600 W/115V
Preheating 700 W/230V
2
4
4 x 0,5
4 x 0,5
Diagram 2. Electrical connection diagram, the JrS Unit

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PARMAIR EXIMUS JrS and JrV
Parmair Eximus JrV
Extra
43 1321
J1 J2 J3
230
V
Remote
control
Remote
control
1234 12
34
J13
J11
J12
J14
Master switch
T50
C2 1
Thermal
shield
Preheating 700W/230V
M
+
Reheating
2
4
Diagram 3. Electrical connection diagram, the JrV Unit

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PARMAIR EXIMUS JrS and JrV
The Parmair Eximus Jr Units always come with a control unit. The control unit is attached to the
control panel of the unit, but it can also be detached and mounted on a switch case.
Another control unit (optional) can also be connected to the unit. The separate control unit will
function alongside the standard fixed control unit. The three fan speeds are set steplessly during
installation, and may be reconfigured at a later time (see the Implementation Guide).
The Parmair Eximus Jr Units can also be equipped with a control unit based on moisture (%RH),
carbon dioxide (CO2) or other outside control device such us a weekly timer. The unit
automatically switches to boosted ventilation when it receives an outside control voltage from
one of the mentioned sources; after the need for the boost is over, it returns to basic mode.
The ventilation unit should always at least be switched on to the lowest setting (min). This
will ensure that indoor air stays healthy and that the disadvantages of humidity and damage from
freezing are avoided.
6. INSTALLING THE UNIT
Parmair Eximus Jr Units are intended for installation in warm indoor areas (above +5°C). The
unit is attached to the wall by fixing points along the upper and lower edges and on the rear
panel of the unit. The unit should be tilted slightly backwards to allow the condensed water to
run out. A separate electric supply from distribution board is recommended for the unit.
7. CONNECTING THE CONDENSATION WATER PIPE
The condensation water pipe is laid separately to a floor drain, a drainpipe or a loose container.
To avoid airlocks, add water to seal when the unit has been installed and whenever maintenance
is performed on the filter.
THE CONDENSATION UNIT OF THE EXIMUS Jr UNIT IS ON THE BOTTOM OF THE
VENTILATION UNIT ON THE LEFT OR RIGHT SIDE, DEPENDING ON WHETHER IT IS
LEFT- OR RIGHT-HANDED.

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PARMAIR EXIMUS JrS and JrV
8. INSTALLING THE DUCTS
There are four duct connections (∅160 mm) on the top of the unit (see Illustration 1 and 2).
1. Waste air 4. Extracted air
2. Fresh air 5. Water flow (Model JrV)
3. Incoming air 6. Water return (Model JrV)
RIGHT (R)
Illustration 1. Duct outlets (Right)
LEFT (L)
Illustration 2. Duct outlets (Left)

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PARMAIR EXIMUS JrS and JrV
9. FUNCTIONS AND OPERATION OF UNIT
1. Master switch
2. Incoming air temperature control buttons
3. Reheating on/off button
4. Maintenance mode button
5. Summer/winter damper LEDs
6. Reheating element LED
7. Remote control unit (see Illustration 4)
Illustration 3. Control Panel
9.1 MASTER SWITCH
The master switch (1) is located on the lower part of the unit. The switch serves to cut off
electric power to the entire unit and the control unit.
(NB! If outside control units are attached to the unit, they have voltage regardless of the
position of the main switch.)
9.2 REHEATING TEMPERATURE CONTROL AND TEMPERATURE GAGE
The reheating element (Model JrS) or the water radiator control vent (Model JrV) will not be
switched on unless the temperature of the incoming air drops below the set temperature. The
temperature of incoming air can be controlled to the desired level (+10° C – +25° C) with the
“+” and “-” buttons (2) next to the LED display. The reheating on/off button (3) allows the
reheating resistor to be switched off.
Suitable incoming air temperature is usually approximately 2–3° C lower than the indoor air
temperature. Incoming air at too high a temperature reduces the efficiency of the ventilation.
Incoming air at too low a temperature can cause drafts.
The preheating element has no separate control and is automatically controlled when the
antifreeze function is switched on.

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PARMAIR EXIMUS JrS and JrV
The Eximus Jr Unit has five temperature sensors that measure the following temperatures:
L1 Fresh air temperature before preheating
L2 Incoming air temperature to be blown into the house after reheating
L3 Extracted air temperature before heat exchanger
L4 Waste air temperature after heat exchanger
L5 Temperature of the coldest spot on the heat exchanger
The measured temperatures are shown on the display on the front panel. The temperature
displays can be accessed by pushing the “+” and “-” buttons simultaneously. The panel first
displays the code of the sensor (L1, L2…), and two seconds later the temperature measured by
the sensor. The sensor code and temperature are shown at two-second intervals on the display.
The “+” button displays the temperature of the next measured point. If no button is pushed for
10 seconds, the display returns to basic mode.
9.3 MAINTENANCE MODE BUTTON
The concealed maintenance mode button (4) is used for presetting the fan speeds
(see Implementation Guide).
9.4 SUMMER/WINTER DAMPER LED
The summer/winter damper LED (5) tells you whether the heat recovery bypass dampers are
down for the summer or up for the winter. The damper LED is controlled using the switch inside
the unit.