Fantech SHR 14105R Installation manual - Modes of Operation
7
1. Continuous / Ventilation Mode
In this mode of operation, both fans are operating and exchanging air with the outside. The heat recovery ventilator (HRV) constantly
exchanges the air at the rate you select, either at low or medium speed, and switches to high speed when activated by an optional
remote control. Continuous mode is recommended, since pollutants are slowly but constantly being generated in a building.
2. Recirculation Mode
In recirculation mode, the supply motor continues to run and a damper moves to block off air entering from outside, drawing air instead
from the conditioned space. The exhaust to outside motor is OFF when in recirculation mode.
3. Intermittent / Standby Mode
The system is always on standby and operates at high speed when activated by an optional remote control (required): "Standby"
should be selected if the user wishes to stop the unit from continuous exchange.
4. Defrost
A preset defrost sequence is activated at an outdoor air temperature of -5ºC (23ºF) and lower.
During the defrost sequence, the motorized damper in the bypass module (BPM) temporarily blocks the incoming fresh air stream so
that the warm air from the room can circulate through the HRV. The exhaust blower shuts down and the supply blower switches into
high speed to maximize the effectiveness of the defrost strategy. During this cycle, the unit will not create a negative pressure. Please
note that these systems are configured to defrost with the BPM devices installed on the fresh air from outside port. Alternate config-
uration are available by contacting our technical support department.
MODES OF OPERATION
Intermittent operation can be obtained by toggling the switch located on outside of cabinet. External low voltage contacts allow for
high speed operation when an optional remote control is used.
SETTING SPEED
Boost Switches
Main Control
Convenient Optional Low Voltage Wall Controls
EDF5
Five-Function Wall Control
EDF1R
Triple Function Wall Control
RTS3
Pushbutton Timer
RTS 2
Pushbutton Timer
MDEH1
Dehumidistat
• 20-40-60 Min. Boost Timer
• Press button once to energize
system to high speed for 20
minutes
• Press button twice unit unit
will run for 40 minutes on
high speed.
• Press button three times for
60 minutes of high speed
• Up to five can be used with
one system
The EDF1R is designed to pro-
vide 3 modes of operation to the
Heat/Energy Recovery Ventilator.
• Pressing the “Fan” button
once initiates the unit to run
at a continuous low speed of
operation (green).
• Pressing the button twice
allows the HRV/ERV to run
continuous cycle of 20 min-
utes on and then standby for
40 minutes.
• Touch the button a third time
and the system will run recir-
culation at high speed (red).
The ventilation system will stay
on the last function selected
until it is manually changed.
• Features: Digital Display,
Maintenance Light, Power
Button, Cycle Timer,
Longer Override Timer,
Speed Control and
Dehumidistat Control.
• Intermittent, Recirculation or
Continuous Ventilation Modes
• Use in one central location
• Rotary Dial Dehumidistat
• Just turn dial to set desired
humidity level
• Multiple units can be used
• Install in bathrooms,
kitchen, laundry
• Dehumidifies when air out-
side is dryer than air inside
• 20-Minute Timer with LED
Light
• Boosts system to high
speed with the touch
of a button
• Up to five can be used
with one system
• Use in bathrooms,
kitchens, laundry
2-wire
2-wire
3-wire
2-wire
2-wire