ICM Controls SC900V Installation, Operation & Application Manual

SC900V
Auto Changeover
24-277 VAC Hardwire
2 or 4 Pipe Fan Coil Thermostat, 3 Speed
• 2-pipe systems
• 4-pipe systems
• Pipe sensor compatible
• Configurable
• Large display with backlight
• Selectable fahrenheit or celsius
• Relay outputs (minimum voltage drop in thermostat)
• Remote sensor compatible
Installation, Operation & Application Guide
For more information on our complete range of American-made
products – plus wiring diagrams, troubleshooting tips and more,
visit us at www.icmcontrols.com
Icon Descriptions
Fan
operation
icon
Auto
Fan
HEAT COOL
Cooling operation icon
Heating operation icon
Specifications
Electrical rating: 24-277 VAC, 6 amp maximum per output
Temperature control range: 45°F to 90°F (7°C to 32°C) Accuracy: ± 1°F (± 0.5°C)
Timing: Backlight Operation: 10 seconds
Terminations: L, N, Heat, Cool, FH, FM, FL, PS, RS, SB, SC
Important Safety Information
ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing
the fuse or switching the appropriate circuit breaker to the OFF position before working
on a high voltage thermostat.
WARNING!: Always turn off power at the main power supply before installing, cleaning,
or removing thermostat.
• This thermostat is for 24-277 VAC applications only; do not use on voltages over 277 VAC
• Use this thermostat only as described in this manual
Package Contents/Tools Required
Package includes: SC900V thermostat on base, thermostat cover, wiring labels, screws and wall
anchors, Installation, Operation and Application Guide
Tools required for installation: Drill with 3/16" bit, hammer, screwdriver
To Remove Existing Thermostat
ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing
thermostat.
1. Turn off power to the heating and cooling system by removing the fuse or switching the appropriate circuit breaker off.
2. Remove cover of old thermostat. This should expose the wires.
3. Label the existing wires with the enclosed wire labels before removing wires.
4. After labeling wires, remove wires from wire terminals or remove wire nuts.
5. Remove existing thermostat base from wall.
6. Refer to the following section for instructions on how to install this thermostat.
ELECTRICAL SHOCK HAZARD – Turn off power at the main service panel by removing the fuse or switching the appropriate circuit breaker to the OFF position before removing the existing
thermostat.
IMPORTANT: Thermostat installation must conform to local and national building and electrical codes and ordinances.
Note: Mount the thermostat about five feet above the floor. Do not mount the thermostat on an outside wall, in direct sunlight, behind a door, or in an area affected by a vent or duct.
1. Turn off power by removing the fuse or switching the appropriate circuit breaker off.
2. To remove cover, remove screw and pull gently at the seam at the top.
3. Set thermostat away from working area.
4. Align thermostat base with junction box mounting holes and feed the control wires through hole.
5. Use supplied screws to mount thermostat base to junction box.
CAUTION!: Be sure exposed portion of wires does not touch other wires.
System 1 System 2
Heat Only Cool Only
Black
L
24-277 24-277
VAC White VAC
N
Red
Heat H
C Cool
Purple Purple
FH
Fan High Fan High
Yellow Yellow
Fan Medium FM Fan Medium
Gray
FL
Fan Low Fan Low
Orange/White Orange/White
Pipe Sensor PS Pipe Sensor
(Optional) (Optional)
Red/White Red/White
Remote Sensor RS Remote Sensor
(Optional) (Optional)
White/Black White/Black
Set Back SB Set Back
(Optional) (Optional)
Blue/White Blue/White
SC
System 5
System 6
2-Pipe Manual Changeover
with Auxiliary 4-Pipe Manual Changeover
Black
L
24-277 24-277
VAC White VAC
N
Red
Heat/Cool H Heat
Blue
Auxiliary C Cool
Purple Purple
Fan High FH Fan High
Yellow Yellow
Fan Medium FM Fan Medium
Gray
Fan Low FL Fan Low
Orange/White
Pipe Sensor PS
(Required)
Red/White Red/White
Remote Sensor RS Remote Sensor
(Optional) (Optional)
White/Black White/Black
Set Back SB Set Back
(Optional) (Optional)
Blue/White Blue/White
SC
To Install Thermostat
6. Wire nut the thermostat wires to your system wires.
7. Gently tug wire to be sure of proper connection. Double check that each wire is connected to the
proper terminal.
8. Snap thermostat to base that is mounted on the wall. Refasten with screw.
9. Turn on power to the system at the main service panel.
10. Test thermostat operation as described in "Testing the Thermostat".
Wiring Diagrams
System 3
2-Pipe Manual Changeover
Black Black
L L
24-277 24-277
White VAC White VAC
N N
Red
H Heat/Cool H
Blue
C C
Purple
FH FH
Fan High
Yellow
FM Fan Medium FM
Gray Gray
FL FL
Fan Low
Orange/White
PS Pipe Sensor PS
(Optional)
Red/White
RS Remote Sensor RS
(Optional)
White/Black
SB Set Back SB
(Optional)
Blue/White
SC SC
System 7
4-Pipe Auto Changeover
Black Black
L L
24-277
White VAC White
N N
Red Red
H Heat H
Blue Blue
C Cool C
Purple
FH Fan High FH
Yellow
FM Fan Medium FM
Gray Gray
FL Fan Low FL
PS PS
Red/White
RS Remote Sensor RS
(Optional)
White/Black
SB Set Back SB
(Optional)
Blue/White
SC SC
Wire Designator Descriptions
L – 120 VAC Hot Black
N – 120 VAC Neutral White
H – Heat Red
C – Cool Blue
FH – Fan High Purple
FM – Fan Medium Yellow
The configuration mode is used to set the SC900V to match your heating/cooling system.
To configure the SC900V, perform the following steps:
1. Verify the SC900V is in the OFF mode. Press the SYS (left) button until off mode displays.
2. Press the PROG button for 5 seconds while the SC900V is in OFF mode.
Press the up or down button to change settings within each screen.
Press the PROG button to advance to the next screen.
Note: Pressing the SYS button will return you to the previous screen.
To exit configuration mode, press the PROG switch for 5 seconds.
Configuration Mode Settings
1 – System
Select the type of operation you require.
1. Heat Only is for a system with only heating.
System 4
2. Cool Only is for a system with only cooling.
2-Pipe Seasonal Changeover
3. 2-Pipe Manual Changeover is for a 2 pipe system that handles both heating and cooling. The user
selects whether the system will be set to heating or set to cooling.
Black
L
4. 2-Pipe Seasonal Changeover is for a 2 pipe system that handles both heating and cooling. The
thermostat selects whether the system will be set to heat or set to cool based on the pipe sensor
White
N
temperature.
Red 5. 2-Pipe Manual Changeover with Auxiliary is for a 2 pipe system that handles both heating and
Heat/Cool H
cooling. The user selects whether the system will be set to heat or set to cool. If set to heat and the
pipe sensor indicates there is not heat, the auxiliary output will be turned on.
C
6. 4-Pipe Manual Changeover is for a 4 pipe system. The user selects whether the system will be set
to heat, cool or off.
Purple
FH
Fan High
7. 4-Pipe Auto Changeover is for a 4 pipe system. The user selects whether the system will be set to
Yellow
heat, cool, heat & cool or off.
Fan Medium FM
"1" Heat only
Gray
FL
Fan Low
"2" Cool only
Orange/White
"3" 2-pipe manual changeover
Pipe Sensor PS
"4" 2-pipe seasonal changeover
(Required)
Red/White
Remote Sensor RS
(Optional)
White/Black
2 – Temperature Scale
Set Back SB
(Optional)
This thermostat can function in Fahrenheit and Celsius.
Blue/White
SC
F = Fahrenheit (Default)
C = Celsius
3 – Valve Type
This thermostat operates with Normally Open or Normally Closed valves. Select the correct valve
type for your system.
no = Normally Open (Default)
nc = Normally Closed
4 – Temperature Sensor
Select the type of room temperature sensor you are using.
o = Onboard temperature sensor (Default)
r = Remote temperature senso
5 – Fan Operation
Select either Automatic Fan or Continuous Fan.
Automatic Fan will automatically adjust the fan speed (Low, Medium, High) based on the set point
and room temperature. The more the room temperature is from the set point the faster the fan will
operate. The fan will be off in OFF mode.
Continuous Fan will run the fan at the fan speed that is selected with the FAN button. It can be
turned OFF only when in OFF mode.
A = Automatic Fan (Default)
C = Continuous Fan
FL – Fan Low Gray
PS – Pipe Sensor (optional) Orange/White
RS – Remote Sensor (optional) Red/White
SB – Set Back (optional) White/Black
SC – Set Back/Sensor Common Blue/White
Configuration Mode
SYS Up
button
PROG
Down
FAN
button
"5" 2-pipe seasonal changeover w auxiliary
"6" 4-pipe manual changeover
"7" 4-pipe auto changeover (Default)
r