Installation and Operation Manual
●
Fan Coil Controller – EZstat
EC-EZstat
Date: 9-2014
Supersedes: NEW
Engineered Comfort reserves the right to change any information concerning product or specification without notice or obligation.
Page 22 of 36
Procedure
Steps
Display
Choose and
set the fan coil
system options
3. Press the
to choose any of the following items:
Back
Enter
Exit
SYSTEM
STAGE 1 FAN
STAGE 2 FAN
MAX VLV LOW
MAX VLV MED
MAX VLV HIGH
DAT ENABLE
VLV ACTION
Common Options
Two Pipe Only
• LOCAL OVRD TIME
• FAN OFF DELAY
• OCCUPIED FAN
•
FAN SPEEDS (three speed fans only)
• FAN COOL MAX
•
FAN MINIMUM (modulating fans only)
• FAN HEAT MAX
• MOD FAN ACTION
• MAX VLV LOW
• MAX VLV MED
• MAX VLV HIGH
• DAT ENABLE
• AUTO FAN RESET
• STAGE 1 FAN
• STAGE 2 FAN
• VLV ACTION
Four Pipe Only
• CL VLV ACTION
• HT VLV ACTION
Set the local
override time.
Set the local override time. From the SYSTEM menu choose LOCAL OVRD
TIME to set the time the EZstat will hold an override temperature setpoint
as the active setpoint. At the end of the period, the EZstat will use either
an occupied or unoccupied setpoint as the active setpoint.
Set the fan
delay.
From the SYSTEM menu choose FAN DELAY
OFF to set the time the system fan will continue to run after the last heat‑
ing or cooling stage is turned off.
Set the
occupied fan
control.
From the SYSTEM menu choose OCCUPIED FAN to choose the following:
•
When ON, the fan will run continuously when the schedule is
occupied (On).
•
When the schedule is unoccupied (Off) the fan will run only when
there is a call for heating or cooling.
Set fan speeds
for three‑
speed fans.
Select FAN SPEEDS from the SYSTEM menu to designate the number of
speeds at which the installed fan will run.
Set fan speeds
for modulating
speed fans
Select FAN MINIMUM and FAN MAXIMUM from the SYSTEM menu to set
fan speed for modulation fans.
•
FAN MINIMUM—Sets the slowest speed at which the fan will run
when a user sets the fan speed to LOW.
•
FAN HEAT MAXIMUM—Sets the fastest speed at which the fan will
run when a user sets the fan speed to HIGH for heating.
•
FAN COOL MAXIMUM – Sets the fastest speed at which the fan will
run when a user sets the fan speed too HIGH for cooling.
The Min. and Max. CFMs are also the range at which the ECM operates
throughout the sequence when set to auto.
Enter
FAN MINIMUM
25%
Enter
FAN HEAT MAX
100%
Enter
FAN COOL MAX
100%
NOTE
