Unit Configuration - Carrier VVT Zone II Installation And Startup Manual

Appendix A: VVT Zone II Points/Properties

Unit Configuration

Navigation: i-Vu® / Field Assistant:
Point Name/Description
Heat Enable – Enables the reheat function.
Parallel Fan Heat On Delay – The delay in reheat coming on after the zone has a
heating demand. If the Term Type is Parallel, this allows the fan time to use plenum air
to heat the space prior to bringing mechanical reheat. If the Term Type is Single Duct,
we recommend that you set this value to 1 minute.
Fan Off Delay – Fan-type terminals only. The amount of time the terminal fan continues
to operate after a heating demand is satisfied.
Maximum Heating SAT – The maximum supply air temperature allowed while ducted
heat is operating. Ducted type supplemental heat is controlled so that it will not exceed
this limit or the configured High SAT Alarm Limit.
Set the Maximum Heating SAT limit to 5°F (2.8°C) above the desired maximum supply
air temperature you would expect. Refer to Alarm Configuration > High SAT Alarm Limit
to properly set this parameter.
Max RH Override Position – The maximum damper position that the RH function can
override the damper to. When active, the damper modulates to the temperature control
position, RH override position, or the IAQ override position, whichever is greater.
DCV Max Vent Damper Pos – The maximum damper position that the IAQ function can
override the damper to. When active, the damper modulates to the temperature control
position or the IAQ override position, whichever is greater.
Filter Service Alarm Timer – The amount of time a Parallel or Series fan will run before
generating a Filter Alarm. Set to 0 to disable the alarm.
T55 Pushbutton Override – Enables or disables the use of a pushbutton override from a
local space temperature sensor.
Setpoint Adjustment – Enables the setpoint adjustment slider on the SPPL space
sensor.
Setpoint Adjustment Range - The maximum amount that a user can adjust the setpoint
on the local ZS or SPT sensor.
Heating Lockout Temperature – Supplemental reheat is disabled if outside air
temperature exceeds this value. Supplemental reheat is enabled when the outside air
temperature falls below a fixed hysteresis of 2 °F (1.1 °C). This function is active only
if there is a valid network outside air temperature.
VVT Zone II Controller
Installation and Start-up Guide
Properties Control Program
>
66
Configuration Unit Configuration
> >
Default/Range
D: Enable
R: Disable/Enable
D: 15 minutes
R: 0 to 30 minutes
D: 120 seconds
R: 0 to 180 seconds
D: 105°F (40.6°C)
R: 100 to 140°F
(37.7 to 60°C)
D: 60%
R: 0 to 100%
D: 70%
R: 0 to 100%
D: 0 hr
R: 0 to 9999 hr
D: Enable
R: Disable/Enable
D: Enable
R: Disable/Enable
D: 2 °F (1.1 °C)
R: 0 to 5 °F
(0 to 2.7 °C)
D: 70°F (21.1°C)
R: -60 to 150°F
(-51.1 to 65.5°C)
CARRIER CORPORATION ©2019
All rights reserved