Humidifier Operation; Stage Inhibits; Aggressive Recovery; Heating Aggressive Recovery - Trane TZON1050AC52ZA Installation Manual

Installation Guide
7.6

Humidifier Operation

The 1050 Control has the ability to control a humidifier.
Humidification is only enabled while in heating mode of
operation. Control options are:
• RH Control – When the indoor humidity is less than
the heating target relative humidity, a request for
humidification is sent to the indoor unit.
• Frost Control – The 1050 Control references the
outdoor temperature and structure integrity to offset
the heating target relative humidity. This helps to
limit the risk of frost or condensation from forming
on interior walls and windows. A scale of 1 to 10 is
provided based on the insulation properties and
expected leakage of the home (1=Leaky with poor
insulation, 10=Very Tight with good insulation). An
outdoor temperature sensor must be connected and
enabled for frost control to be available.
Frost Control Structure Integrity Scale
1 2 3 4
Leaky, Poor Insulation
The 1050 Control can be setup to allow humidification
anytime in heating mode or only when actively heating.
The airflow during Humidifier-only is factory set to 100%
but can be adjusted between 35%-100% (this requires a
variable speed indoor blower). All humidifier control options
are located in the Installer Setup>Accessories Settings.
When zoning is applied, all dampers open fully on a for
humidification only.
7.7

Stage Inhibits

The 1050 Control utilizes a Stage Inhibit to limit equipment
staging. This inhibit can be defeated in the following two
manners.

7.7.1 Aggressive recovery

Greater than 2°Setpoint Change
Disables stage inhibits in heating and cooling mode anytime
the setpoint is adjusted more than 2°F

7.7.2 Heating Aggressive recovery

By Outdoor Temperature
Disable stage inhibit in heating mode only when the outdoor
temperature falls below the selected outdoor temperature.
Note: If Aggressive Recovery is enabled, Heating
Aggressive Recovery is disabled.
7.8

Ventilation Operation

The 1050 Control has the ability to control a Ventilation
system through the normally open dry AUX Contacts on
the optional Relay Panel. The blower can be interlocked
on a call for ventilation. The blower speed during a call for
22
5 6 7 8 9 10
Average Good Insulation, Tight
ventilation only will be the same as the continuous fan setting
for units with a variable speed indoor blower. When zoning
is applied, all dampers open fully on a call for ventilation
only. The ventilation run time per hour can be adjusted to
meet ASHRAE 62.2 standards. A temperature override can
be set to prevent ventilation operation when the outdoor
temperature exceeds the minimum or maximum outdoor
temperature selections. If outdoor temperature overrides
are enabled the user can select to accumulate the missed
ventilation run time. Options are below:
• Accumulate missed ventilation run time in 4
hour increments and make up when the outdoor
temperature is within the min/max settings.
• Accumulate missed ventilation run time in 24
hour increments and make up when the outdoor
temperature is within the min/max settings
• Accumulate missed ventilation run time in 4 hour
increments and make up at the end of 4 hour period.
• Accumulate missed ventilation run time in 24 hour
increments and make up at the end of 24 hour period.
All Ventilation control options are located in the
Installer Setup>Accessories Settings.
7.9

Warm Air Discharge

[Disabled when zoning is applied] Enabling Warm Air
Discharge will reduce the variable speed blower air flow
by 20% when in compressor heating operation. Warm
Air Discharge only applies to compressor heating and is
disabled when hydronic, fossil fuel or electric heat (including
supplemental heat) modes are activated. Warm Air Discharge
can be enabled in Installer Setup>Comfort Settings.

7.10 Wet Heat (Hydronic) Operation

A hot water coil can be applied to either a variable speed
or non-variable speed indoor unit. The hot water coil can
be the sole source of heat or used as auxiliary heat when
applied with a heat pump. When applied with a heat pump,
wet heat is considered auxiliary heat and will operate in-
conjunction with heat pump heat. Switching the system
mode to emergency heat would disable the heat pump and
cycle the wet heat only.
When using BK to control a variable speed air handler,
the blower speed during wet heat only heating will vary
based on the system load value. The airflow will range
from 35% to 100% depending on the system load value.
When applied with a heat pump, the blower speed during
heat pump and wet heat operation will be the higher of the
two air flows. When not using BK for variable speed blower
control, the air handler will determine air flow. There are
separate blower "On" and "Off" delays for wet heat in the
1050 Control.
The 1050 Control is designed to operate forced air systems
and should not be applied to non-forced air systems (radiant
floors, radiators, etc...)
The hydronic heat blower delay options can be accessed
by navigating to Installer > Setup > Airflow Settings.
18-HD80D1-3-EN