Table of Contents
Advertisement
DE-HUMIDIFICATION SETTINGS — FEATURE SCREEN
1. From the Main Screen, press the right arrow icon to go the the Features
screen.
2. From the Features screen, select system systems.
3. Touch the ClimateIQ setting button. Available options when selected are
selection for DRY, MODERATE and HUMID.
4. Selecting HUMID bring on the set-to button. When you touch the set-to
button, the arrows appear, allowing you to change to the desired de-humidifier
percentage setting
SYSTEM SETTINGS
Appears only when
humidification
heat pump is
settings
present
heating
35
humidifier
mode
is ON
COMFORT
(default is ON)
Wi-Fi
9:39 am Aug 15, 2012
Figure 17. Humidifier Controls (Communicating Outdoor Unit)
HEATING MODE (XP25 ONLY) — CLIMATE IQ™
This technology optimizes De-humidification settings for specific climates to
improve home comfort during cooling or heating operations.
Two climate settings are available:
S
Comfort The system reduces indoor airflow, increasing supply air
temperature.
S
Normal Standard system operation.
COOLING MODE — CLIMATE IQ™
Three climate settings are available:
S
Dry The system supplies higher indoor airflow at all compressor capacities,
increasing efficiency by operating at a higher sensible to total ratio.
S
Moderate The system supplies indoor airflow that balances efficiency and
comfort.
S
Humid The system supplies lower indoor airflow at all compressor
capacities, improving humidity removal by operating at a lower sensible to
total ratio.
How De-humidification Mode Works
DRY, MODERATE AND HUMID —These modes allow user control of
relative humidity between 40% and 60% RH. These conditions must be
met for either mode to operate:
S
de-humidification mode has been enabled, and
S
the unit is in COOL mode, and
S
-de-humidification demand exists (0V present at H), and
MODERATE mode also requires presence of cooling demand [Y for HP
heat, or W for gas heat (W may be energized with G de-energized)].
®
Humiditrol
or Auxiliary Dehumidifier mode requires:
NOTE - Systems using icomfortt and a de-humidifier - "Dehum" jump
er on furnace/air handler control does not need to be cut when using
®
with a iComfort Wi-Fi
thermostat.
S
Wi-Fi is operational or outdoor sensor is installed and set up
S
de-humidification has been enabled on installer settings, and
S
the unit is in COOL mode, (or if in AUTO, at least one thermostat
cooling call made prior to the De-humidification demand), and
S
a de-humidification demand exists (RH above set point), and
S
outdoor temp. below 95°F; indoor temp. above 65°F, and
S
for HUMIDITROL, adjust Humiditrol
lows:
MAX adj. - Indoor temp > 2°F above heating set point
MID adj. - Indoor temp >
MIN adj. - Indoor temp > 2°F below cooling set point
®
iComfort Wi-Fi
De-humidification settings
%
%
ClimateIQ
40
setting
set to
MOD
set to
(default is DRY)
Select the humidity
level that matches
your environment
2
®
comfort parameters as fol
HEAT setpoint + COOL setpoint
2
AUXILIARY DEHUMIDIFIER — STAND-ALONE DEHUMIDIFIER
When this option is selected, De-humidification will be allowed under the following
conditions, provided there is NO call for humidification:
S
In the absence of heating or cooling calls, or
S
Simultaneous with blower only calls.
If the blower is required to operate while the auxiliary dehumidifier is running, a
separate wire must be installed from the auxiliary dehumidifier to the indoor unit's G
thermostat input that will energize G when the auxiliary dehumidifier is running (see
wiring diagram on page 37).
Auxiliary De-humidification is controlled by the thermostat De-humidification
demand.
NOTE - Refer to HCWH Dehumidifier Installation Instructions for installation
recommendations.
humidifier
HOW DE-HUMIDIFICATION MODE WORK — NO EXTERNAL
display
DE-HUMIDIFICATION DEVICE
is ON
NOTE - OFF, MEDIUM and HIGH De-humidification modes are also a function of the
(default is ON)
HVAC system with NO external De-humidification devices installed.
In OFF mode, De-humidification if off.
In MEDIUM mode, De-humidification occurs if these conditions are met and signals are
present at specific terminals:
?
S
De-humidification has been enabled on installer settings, and
S
the unit is in COOL mode, and
S
De-humidification demand exists (RH above set point), and
S
cooling demand exists (Y1 energized).
In HIGH mode, De-humidification occurs if all BASIC conditions are true, except cooling
demand may or may not be present. Also note that:
S
Maximum overcool from cooling set point is 2ºF.
S
Deadband temperature is limited to a minimum of 5ºF (instead of 3ºF in DRY
or MODERATE modes) because of 2ºF overcooling.
G71MPP OR SLP98 FURNACE SETTING ADJUSTMENT
If your iComfort Wi-Fi
and is set to variable-capacity mode of operation (the icomfortt default with these
units), the thermostat's settings for stage timers are ignored (even if shown enabled
in the thermostat). The stage timer will be used on the cooling side for other cooling
units except the XC/XP25 where they are not used. The furnace software sets and
controls the firing rates. The only other controlling factor is the stage temperature
differentials. In Load-Tracking Variable Capacity (default for these furnaces), both
stage timers and temperature differentials are ignored.
ZONING CONTROL SETTINGS
NOTE - Skip if no zoning control device is installed.
A. Heat/Cool Changeover
The following is an example of how the system operates during a heating / cooling
changeover.
When the system is satisfying a call from zone 1 for heating and receives a call for
cooling from zone 2, the following will occur:
S
Then system will continue to fulfill the demand from zone 1 until satisfied, or
a maximum time of 20 minutes has occurred.
S
If after 20 minutes the system is still operating based on satisfying the heating
demand from zone 1, the system will terminate that demand.
S
The system will then shut system down for five (5) minutes. This will allow for
system temperatures and operating pressures to stabilize.
S
After a five 5 minute delay the system will begin operations to satisfied the
cooling demand from zone 2.
The system will continue to operate in this matter each time it receives a zone call
that is opposite of the current mode of operation (heating or cooling).
B. Damper Operation
Cooling Operation Conventional Heat/Cool and Heat Pump Systems
When a in-zone thermostat makes a demand for cooling, the zone damper opens
and the cooling equipment begins operating.
Cooling demand is terminated when:
1. All zone demands for cooling are terminated.
2. The demand has exceeded the heat/cool changeover time limit (20minutes)
while a heat demand exists.
Page 15
®
thermostat is being used with a G71MPP or SLP98 furnace
7-Day Programmable Communicating Thermostat
Advertisement
Table of Contents
