Honeywell PRESTIGE THX9321 - Manual (Page 3)

THX9321 PRESTIGE ® 2.0 AND THX9421 PRESTIGE ® IAQ WITH EIM
3 68-0311—02
SPECIFICATIONS
Thermostat Description:
Electrical Ratings for:
Equipment Interface Module and the THX9321 Prestige 2.0
Thermostat
NOTE: To find what terminals are available on the Equip-
ment Interface Module and the Prestige Thermo-
stats, see “Terminal Designations” below the
table.
Terminal Designations:
— Equipment Interface Module: R, RC, RH, C, W-O/B,
W2-AUX 1, W3-AUX 2, Y, Y2, G, A-L/A, U1 U1, U2 U2,
U3 U3, S1 S1, S2 S2, S3 S3, S4 S4, A, B, C, D
— THX9421 Thermostat: R, C
— THX9321 Thermostat: R, RC, C, W-O/B, W2-AUX/E, Y,
Y2, G, A-L/A, K, U1 U1, U2 U2
Power Consumption of THX9421/THX9321:
Full brightness = 3.0 VA
1/2 brightness = 2.1 VA
Backlight off = 1.9 VA
RedLINK Communication:
Frequency: 900 Mhz frequency range
Re-Sync Time: RedLINK devices re-establish communication
within 6 minutes after AC power resumes.
Temperature Setting Range:
Heating: 40 to 90 °F (4.5 to 32 °C).
Cooling: 50 to 99 °F (10 to 37 °C).
Temperature Sensor Accuracy: ± 1.5 °F at 70 °F (0.75 °C at
21.0 °C)
Humidification Setting Range:
10% to 60% RH.
Dehumidification Setting Range:
40% to 80% RH.
Humidity Display Range:
0% to 99%.
Humidity Sensor Accuracy: ± 5% RH from 30% to 50% RH
at 75 °F (24 °C).
Cool Indication:
Prestige 2.0 and Prestige IAQ 2.0 displays “Cool On” when the
thermostat turns the cooling on.
Heat Indication:
Prestige 2.0 and Prestige IAQ 2.0 displays “Heat On” when the
thermostat turns the heating on.
Auxiliary Heat Indication:
Prestige 2.0 and Prestige IAQ 2.0 displays “Auxiliary Heat On”
when the thermostat turns the auxiliary heat on.
Interstage Differential:
Comfort: The thermostat keeps the indoor temperature within 1
degree of the setpoint (droop less control). The thermostat
turns on stage 2 when the capacity on stage 1 reaches
90%.
When the interstage differential is set to 1.0 or higher, the ther-
mostat stages the equipment based on how far the indoor
temperature is from the setpoint (ISU 3030 to 3090). See
page 31 for more information.
Clock Accuracy: ± 1 minute per month at 77 °F (25 °C). ± 2
minutes per month over the operating ambient temperature
range.
Mounting Means:
Thermostat mounts directly on the wall in the living space
using mounting screws and anchors provided. Fits a hori-
zontal 2 x 4 in. junction box.
Equipment Interface Module (EIM) mounts on HVAC equip-
ment or on a wall in the equipment room.
Feature Description
Powering method • Common wire only
System types (up to
4 heat/2 cool heat
pump and up to 3
heat/2 cool
conventional)
• Gas, oil or electric heat with air
conditioning
• Warm air, hot water, high-efficiency
furnaces, heat pumps, steam and
gravity
• Cool only
Changeover Manual or Auto changeover selectable
System setting Em Heat-Heat-Off-Cool-Auto
Fan setting Auto-On-Circ-Follow Schedule
Terminal
Voltage
(50/60 Hz)
Max. Current
Rating
W - O/B 18 to 30 VAC and
750 mVDC
1.00A
Y (cooling) 18 to 30 VAC 1.00A
G (fan) 18 to 30 VAC 0.50A
W2 - Aux 1 (heating) 18 to 30 VAC 0.60A
W3 - Aux 2 (heating) 18 to 30 VAC 0.60A
Y2 (cooling) 18 to 30 VAC 0.60A
A-L/A (Output) 18 to 30 VAC 1.00A
U1, U1
U2, U2
U3, U3
18 to 30 VAC 0.50A