C A U T I O N
Read instructions carefully before removing any wiring from existing thermostat. Wires must be labeled before they are removed. When removing wires from their terminals, ignore the color of the wires since they may not comply with any standard.
W | REMOVING THE OLD THERMOSTAT |
Y |
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1.Switch electricity to the furnace and air conditioner OFF; then proceed with the following steps.
2.Remove cover from old thermostat. Most are
be loosened.
3.Note the letters printed near the terminals. Attach labels (enclosed) to each wire for identification. Label and remove wires one at a time. Make sure the wires do not fall back inside the wall.
4.Loosen all screws on the old thermostat and remove it from the wall.
MOUNTING THE PSDH121 ON THE WALL
1. Decide whether the thermostat will be mounted vertically or horizontally.
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| C | A U T I O | N |
| Be careful not to drop the unit or disturb electronic parts. | ||||
Y | Y |
| 2. Strip insulation 3/8 in. (9.5mm) from wire ends and | ||
W | W |
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| R | clean off any corrosion. |
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| 3. Fill wall opening with | ||
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| prevent drafts from affecting the thermostat. | ||
4. Cup the thermostat with one hand behind the thermostats display. Separate the unit from its base plate using the tabs protruding from its body with the other hand.
C A U T I O N
Do not allow wires to touch each other or parts on thermostat. Terminated wires must be trapped between black spacer and brass terminal. Securely tighten all eight electrical terminal screws.
J4 J3 J2 J1
JUMPER POSITIONS
(FOR REFERENCE ONLY NOT SHOWN TO SCALE)
INSTALLATION OPTIONS
There are four options which are set by a group of numbered jumpers on the rear of the units circuit board. They are:
J1: The minimum run time jumper J1 sets the minimum length of time that the thermostat must remain with Heat or Cool either on or off before it will automatically switch to the alternate On or Off state. This feature prevents short cycling, and provides compressor protection for cooling units. Choices are 2 or 5 minutes.
J2: The temperature format: jumper selects whether your thermostat displays temperatures in Celsius or Fahrenheit.
J3: This Jumper determines whether the display will be horizontally or vertically oriented.
J4: This Jumper controls the “swing” or temperature variation in the home. Using the smaller number results in more stable temperature, while the wider setting is provided as a more energy efficient alternative. Users of force hot water systems
| TAB |
BASE | E |
Y | |
| B |
| W2 O |
| R |
| G |
| C |
| TERMINALS |
ATTACHING WIRES
N O T E
If you are mounting the base to a soft material like plasterboard or if you are using the old mounting holes, the screws may not hold. Drill a
Then mount the base as
described below.
may find the 0.25 setting more comfortable.
The table at left is printed on the circuit board. To change a jumper
position. The closed or shorted position is that which covers both a jumpers pins. To prevent its loss, a jumper may be placed over one pin only for the open positions. After settings have been changed, press
the
5. Route the wires through the large hole in the base plate by the terminal block. Hold the base against the wall, with the wires coming through. Position the base for best appearance (to hide any marks from an old thermostat). The terminal block should be either to the right of or below the routing hole. Attach the base to the wall with the two screws provided.
PLEASE REVIEW THE WIRING DIAGRAMS IN THE NEXT COLUMN
FOR PROPER TERMINAL CONNECTION
INSTALL BATTERIES
For detailed instruction, see BATTERIES/MAINTENANCE to install batteries at this time.
●Turn the power back on to your heating and/or air conditioning system.
●Verify that the system and its fan are operating properly. When set to a high temperature, the heating system should provide warm air after a short time. Likewise, a cooling system should provide cool air after a short time. Usually sound from the furnace and air conditioning units can be heard while they are running. The rush of moving air should be heard within a short time after either has been started.
●The Installation is now complete.
CALIBRATION
Your thermostat is carefully calibrated at the factory, and will measure temperature to within ±1°. However, you can adjust the reading of your thermostat:
●Slide the MODE switch to OFF.
●Press and hold the Up and Down buttons until the display shows a single digit between +5F°(+3C°) and
●Then the Up or Down buttons may be used to adjust the reading.
●The display will return to normal operation after 4 seconds without an adjustment.
© COPYRIGHT 2004 LUX PRODUCTS CORPORATION. ALL RIGHTS RESERVED | 2 |
