Viconics VZ7656H Wireless Installation Guide - Manual (Page 21)

21 | VZ7656R & VZ7656H-Installation Guide
Dis LL
Discharge air temperature low
limit
Default: 45°F
Discharge air low temperature value at which the cooling
stages will be locked out.
35 to 65°F (2.0°C to 19.0°C)
(increments: 0.5° or 5°)
Anticycl
Minimum on/off operation time
for stages
Default value = 2 minutes.
Minimum On/Off operation time of cooling & heating
stages.
IMPORTANT, anti-short cycling can be set to 0 minutes
for equipment that possess their own anti cycling timer.
Do not use this value unless the equipment has the above
mentioned internal timer. Failure to follow this guideline
may lead to damaged equipment.
0, 1, 2, 3, 4 & 5 minutes.
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 be
turned on and off in the span of an hour.
Note that a higher C.P.H will represent a higher accuracy
of control at the expense of wearing down mechanical
components faster .
3, 4, 5, 6,7 & 8 C.P.H.
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 be
turned on and off in the span of an hour.
Note that a higher C.P.H will represent a higher accuracy
of control at the expense of wearing down mechanical
components faster.
3 or 4 C.P.H.
Deadband
Minimum deadband
Default value = 2.0 °F (1.1 °C)
Minimum deadband value between the heating and
cooling setpoints.
Used only with the setpoints used during communication
failure (ComLost Alarm) while operation is under the
return air sensor. 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 )
Units
Sets the display scale of the
controller
Default value = Imp
0 = SI for Celsius / Pa pressure scale.
1 = Imp for Fahrenheit / in. WC pressure scale.