INSTALLATION
Step 1ÐThermidistat Control Location
Thermidistat Control should be mounted:
·Approximately 5 ft (1.5m) from floor.
·Close to or in a frequently used room, preferably on an inside partitioning wall.
·On a section of wall without pipes or duct work. Thermidistat Control should NOT be mounted:
·Close to a window, on an outside wall, or next to a door leading to the outside.
·Exposed to direct light or heat from a lamp, sun, fireplace, or other
·Close to or in direct airflow from supply registers and
·In areas with poor air circulation, such as behind a door or in an alcove.
Step 2ÐSet DIP Switches
There is a 4 section DIP switch within the Thermidistat Control which must be properly set by the installer. It is easiest to set these 4 switches before the Thermidistat Control is mounted to the wall, so STOP and complete the following steps:
1.Open hinged Thermidistat Control cover.
2.Remove cover completely by snapping it apart at hinge.
3.Open Thermidistat Control by pressing back half of the right end of plastic case inward while, at the same time, pulling front and back halves apart at the right end. The 2 halves will swing apart.
4.Snap hinge apart to completely separate the 2 halves.
5.Switches are located in upper right corner of circuit board. To change switch position, use corner of a small screwdriver to slide switch to opposite position.
6.After switches have been set, do not reassemble the 2 halves. The rear plastic will first be mounted to the wall.
SWITCH 1ÐAC/HP SELECT
Use this switch to select between air conditioner and heat pump systems.
TO SET:
OFFÐfor air conditioner installations. This is factory default. ONÐfor heat pump installations, using either a fan coil or furnace (dual fuel).
SWITCH 2Ð1 SPEED/2 SPEED
This switch tells the system whether the compressor is 1 or 2 speed.
TO SET:
OFFÐfor
SWITCH 3ÐSMART/CONVENTIONAL RECOVERY
Selects between conventional and smart recovery from setback. Conventional recovery changes to new set point at programmed time. Smart recovery, which is active in both heating and cooling, starts 90 minutes earlier and smoothly adjusts set point so room will arrive at programmed temperature at programmed time.
TO SET:
OFFÐfor smart recovery. This is factory default. ONÐfor conventional recovery.
SWITCH 4ÐINSTALLER TEST OFF/ON
Selects a special installer test mode which assists with system startup and checkout. See Step 5, System Startup and
TO SET:
OFFÐfor normal operation. This is factory default. ONÐfor installer test mode.
Step 3ÐInstall Thermidistat Control
Before installing Thermidistat Control, turn off all power to equipment. There may be more than 1 power disconnect. Electrical shock can cause personal injury or death.
1.Turn off all power to equipment.
2.If an existing thermostat is being replaced:
a.Remove existing thermostat from wall.
b.Disconnect wires from existing thermostat, 1 at a time.
c.As each wire is disconnected, record wire color and terminal marking.
d.New or additional wire may be needed to accommodate added humidity outputs.
e.Discard or recycle old thermostat.
NOTE: Mercury is a hazardous waste and MUST be disposed of properly.
3.Select Thermidistat Control rear plastic. (If it is not separated from the remainder of the Thermidistat Control, refer to Step 2 above.)
4.Route wires through large hole in rear plastic. Level rear plastic against wall (for aesthetic value onlyÐThermidistat Control need not be leveled for proper operation) and mark wall through 2 mounting holes.
5.Drill two
6.Secure rear plastic to wall with 2 screws and anchors provided. Additional mounting holes are available for more secure mounting if needed. Make sure all wires extend through hole in mounting base.
7.Adjust length and routing of each wire to reach proper connector block and terminal on rear plastic with
8.Match and connect equipment wires to proper terminals of each connector block. (See Low Voltage Wiring Diagram Reference Chart and Figs. 1 through 28 in separate Wiring Diagram literature). Remember R and C must be connected for proper operation.
Improper wiring or installation may damage Thermidistat Control. Check to make sure wiring is correct before proceed- ing with installation or turning on power.
9.Push any excess wire into wall and against rear plastic. Seal hole in wall to prevent air leaks. Leaks can affect operation.
10.Reattach Thermidistat Control body to rear plastic by first reattaching hinge.
11.Close Thermidistat Control assembly, making sure pins on back of circuit board align with sockets in connector.
12.Turn on power to equipment.
On power up, all display segments will light for 5 sec. For the next 5 sec, a
1.ACÐfor
2.HPÐfor
2