27 | PIR Ready VT76x7 Series-Installation Guide
Heat cph
Heating stages cycles
per hour
Default value =
4
C.P.H.
Will set the maximum number of heating stage cycles per hour
under normal control operation. It represents the maximum number
of cycles that the equipment will turn ON and OFF in one hour.
Note that a higher C.P.H will represent a higher accuracy of control
at the expense of wearing mechanical components faster.
3, 4, 5, 6,7 & 8 C.P.H.
For multi stage models, heat cph applies to W1 & W2
For heat pump models, heat cph applies to W1 only
(Emergency heat )
Cool cph
Cooling stages cycles
per hour
Default value =
4 C.P.H.
Will set the maximum number of cooling stage cycles per hour under
normal control operation. It represents the maximum number of cycles
that the equipment will turned on and off in one hour.
Note that a higher C.P.H will represent a higher accuracy of control at
the expense of wearing mechanical components faster.
3 or 4 C.P.H.
For multi stage models, cool cph applies to Y1 & Y2
For heat pump models, cool cph applies to Y1 & Y2 in cooling and
heating independently of the reversing valve position
Minimum deadband
Default value =
2.0 °F (
1.1 °C )
Minimum deadband value between the heating and cooling
setpoints. If modified, it will be applied only when any of the
setpoints are modified.
2, 3 or 4 °F ( 1.0 to 2.0 °C )
Fan cont
Default value =
On
Fan control in heating mode.
When selecting
On
; the Terminal Equipment Controller in all cases
will always control the fan (terminal G).
Valid for On or Auto fan mode
When selecting
Off
; the fan (terminal G), when heating stages
(terminals W1 & W2) are solicited, will not be energized. The fan in
this case will be controlled by the equipment fan limit control.
Valid only for Auto fan mode. On fan mode will leave the fan always
on.
On or Off
For multi stage models, fan control applies to W1 & W2
For heat pump models, fan control applies to W1 only
(Emergency heat)
Fan del
Default value =
Off
Fan delay extends fan operation by 60 seconds after the call for
heating or cooling ends.
Valid only for Auto fan mod
e. “On” fan mode will leave the fan
always on.
Off or On
