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TERMINAL BLOCK
TERMINAL BLOCK
OPERATION
The Heat Recovery Ventilator is designed to provide fresh
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 energy recovered from the stale air be-
fore it is exhausted to the outdoors. During summer months
when the indoor space is air conditioned, the HRV will help in
cooling the incoming fresh air with the stale air that is being
exhausted.
The HRV is designed to run continuous or on intermittent,
giving the homeowner complete control over their air quality.
Continuous low speed ventilation is recommended, which will
help eliminate carbon dioxide and other gases as well as fresh-
en up the home. Intermittent high speed ventilation can be
obtained through a variety of optional remote controls.
Winter —
Humidity control is very important during the
winter months. This is when problems will be most apparent
since condensation on the windows will often occur. The cold-
er the outside temperature, the greater the risk of condensation
in the home. The average relative humidity should be
maintained between (30 and 60%) to avoid condensation. Low
speed continuous ventilation with high speed override is
recommended.
Spring —
Temperatures are more moderate and become
warmer each day. To keep the humidity and temperature
uniform, set the dehumidistat higher and the switch on the
HRV to standby.
THERMOSTAT
TERMINALS
FOUR
WIRE
W
R
G
TWO WIRE
heating only
W
R
G
C
Y
FURNACE
24-VOLT
Fig. 26 — Control Contact Wiring
THERMOSTAT
TERMINALS
FOUR
W
R
WIRE
TWO WIRE
heating only
W
R
WIRE JOINT
G
C
Y
FURNACE
24-VOLT
Fig. 27 — Alternate Control Contact Wiring
Y
-
+
COOLING SYSTEM
TWO
WIRE
G
Y
-
+
COOLING SYSTEM
TWO
WIRE
Summer —
The air is sometimes hot and humid. To stop
the warm humid air from entering, set the dehumidistat at its
highest level and the switch on the HRV to standby. If the
Intellitek series controller is installed, the air exchanger can be
stopped at any time by turning the HRV off from the wall
control. However, continuous ventilation is recommended.
Fall —
Rain and rapid temperature changes make it difficult
to control the internal humidity level and may result in
condensation on the windows. A remote dehumidistat may
help give greater control over the inside environment.
Modes of Operation —
alone operating capabilities as well as an exclusive 2 wire
communication to most external controls. The trouble-free
accessory controls include: a rotary dial dehumidistat, a
15-minute remote push-button timer, as well as the most
sophisticated line of remote wall-mounted controls, the
Intellitek multifunction series.
An on-board diagnostic LED helps find problems quickly
and efficiently. For example, the LED can be used to signal a
broken or shorted electronic wall control wire. An electronic
air temperature probe gives this board accurate readings in
order to minimize unnecessary defrost operation, and the
on-board jumpers provide the user with the option of adjusting
defrosts time and sequence to optimize performance under
abnormal conditions.
10
HRV
ELECTRONIC BOARD
HRV
ELECTRONIC BOARD
The control board offers stand-
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