Trane US Inc. CONT8241 ユーザーズマニュアル
Installation Guide
page 30
18-HD72D1-1
6.6 Stage Inhibits
When the stage threshold is exceeded, a stage inhibit is
applied. The stage inhibit calculates the rate of recovery
over a 10-minute period and determines if the next stage is
required to meet the current demand. If the rate of recovery
is great enough, then a new 10-minute inhibit is enabled.
The Control will not go to the next stage of operation until it
determines that the current stage cannot satisfy the current
demand. Stage inhibits only apply between compressor
stages and compressor heat to indoor heat. Stage inhibits
do not apply to indoor heat stages.
applied. The stage inhibit calculates the rate of recovery
over a 10-minute period and determines if the next stage is
required to meet the current demand. If the rate of recovery
is great enough, then a new 10-minute inhibit is enabled.
The Control will not go to the next stage of operation until it
determines that the current stage cannot satisfy the current
demand. Stage inhibits only apply between compressor
stages and compressor heat to indoor heat. Stage inhibits
do not apply to indoor heat stages.
START INHIBIT
10 Minutes
Y1 “ON”
Y2 “ON”
Y1 “ON”
LV = 100
LOAD VALUE (LV)
LV = 110
Stage Inhibits - Compressor Staging
Stage Inhibits - Compressor to Aux Heat
START INHIBIT
10 Minutes
Y1 “ON”
W1 “ON”
W1 “OFF”
LV = 100
LOAD VALUE (LV)
LV = 115
START INHIBIT
10 Minutes
Y1 “ON”
W1 “ON”
Y1 “ON”
45 Second
Cool Down
LV = 100
LOAD VALUE (LV)
LV = 125
Stage Inhibits - Duel Fuel
Stage inhibits can be disabled in the 824 Control Installer
Settings>Advanced>Comfort. Options are below:
Settings>Advanced>Comfort. Options are below:
6.7 Aggressive recovery
•
Disables stage inhibits in heating and cooling mode
anytime the set point is adjusted more than 2°F
anytime the set point is adjusted more than 2°F
•
Heating Aggressive Recovery
•
Disable stage inhibit in heating mode only when the
outdoor temperature falls below the selected outdoor
temperature
temperature
6.8 System Mode
•
The 824 has (5) System Modes which can be
selected…Heating, Cooling, Off, Emergency Heating
and Auto.
selected…Heating, Cooling, Off, Emergency Heating
and Auto.
•
Heating – System will only operate in heating mode
•
Cooling – System will only operate in the cooling
mode
mode
•
Off – System will not operate in heating or cooling
mode
mode
•
Emergency Heating – System will operate the indoor
heat source only (this is only available when the
outdoor unit type is a heat pump)
heat source only (this is only available when the
outdoor unit type is a heat pump)
•
Auto - The control will determine which mode of
operation by the following rules:
operation by the following rules:
•
Heat - Indoor temperature is equal or less than
heating set point
heating set point
•
Cooling – Indoor temperature is within 1°F of cooling
set point
set point
There is minimum deadband between heating and cooling
set points of 4°F
set points of 4°F
6.9 Fan Mode
The 824 has three Fan Modes:
•
Auto – Fan only runs with a call for heating or cooling
•
On – Fan runs continuous
•
Circ – Fan runs a user selected minimum amount of
time each hour
time each hour
6.10 Air Cleaner Mode
The 824 has three Air Cleaner modes:
•
Auto – Air cleaner operates only with a call for fan
operation
operation
•
Quick – Air cleaner will operate for 3-hours
•
Allergy – Air cleaner will operate for 24-hours