VENTILATORS VH30100 - Sequence of Operations; Sequence of Operations for Ventilator and Connected Wall Controls and Timer; Ventilation Control

SEQUENCE OF OPERATIONS
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13
IO-VENT-SS
Sequence of Operations for Ventilator and
Connected Wall Controls and Timer
There is a low voltage venlator control mounted on the
HRV/ERV to operate the venlator in Intermient (INTER)
or Connuous (CONT) operaon. When a VHP-RD3P wall
control is connected to the venlator, it can override the
seng on the venlator as described in the table below.
Ventilator Control
Setting
VHP-RD3P Control Setting Action
INTER INTERM
Venlator runs intermiently (unit is dormant ) but goes to high
speed when %RH is above set point on the wall control, or if a
VHP-T3 mer is acvated.
INTER CONT
Venlator runs connuously on set speed at venlator or set
speed on the range seng from the wall control. It will go to
HIGH speed when %RH is above set point on the wall control or if
a VHP-T3 mer is acvated.
CONT INTERM
Venlator runs intermiently (unit is dormant ) but goes to high
speed when %RH is above set point on the wall control or if a
VHP-T3 mer is acvated.
CONT CONT
Venlator runs connuously on set speed at venlator or set
speed on the range seng on the wall control but goes to HIGH
speed when %RH is above set point on the wall control or if a
VHP-T3 mer is acvated.
INTER or CONT OFF
Venlator does not run even if the Venlator is set to INTER or
CONT. Venlator will not go to high speed even if the %RH is above
set point on the wall control or if a VHP-T3 Timer is acvated.
OFF INTERM or CONT
Venlator does not run, even if the wall control is set to INTER or
CONT mode. The Venlator will not go to high speed even if the
%RH is above set point on the wall control or if a VHP-T3 mer is
acvated.
INTER or CONT RH sensor dial set to OFF
Venlator does not run based on RH measured at the wall control
(sensor is disabled). Otherwise the Venlator and the wall control
operates as described above and will go to high speed if a VHP-T3
mer is acvated.
In addion, the VHP-RD3P has the ability to operate
the venlator at a reduced speed by seng the RANGE
selector on the VHP-RD3P to the REDUCED posion. In
this posion, the venlator will run at 15% slower fan
speed in CONT mode and 30% slower in Override (High)
speed when responding to a high humidity signal from
the VHP-RD1 or VHP-RD3P wall control or when the
VHP-T3 mer is acvated.
The low voltage venlator control mounted on the HRV/
ERV has a three-posion selector switch and buons
(marked “+” and “–” ) to adjust fan speed. The color of the
LED light located above the selector switch indicates the
operang mode of the control as follows:
• LED is GREEN = Control is in Run mode
(normal operaon)
• LED is YELLOW = Control is in Balancing mode
Ventilation Control
RUN Mode
When the LED is green, the control is in RUN mode and
the selector switch is used to set the venlator’s Operat-
ing Mode. The opons are:
• INTER (Intermittent): With the selector switch in the
INTER posion, the unit runs only on a call for venla-
on from an external wall control or mer. It will then
run on high speed unl the call is sased.
• CONT (Continuous): With the selector switch in the
CONT posion, the unit runs connuously (low speed)
unl there’s a remote call for venlaon (override)
from an external control.
• OFF: When the selector switch is in the OFF posion,
the venlator will not operate even if there’s a remote
call for venlaon from an external control.