![MOUNTING THE PSD111 ON THE WALL](/images/new-backgrounds/174369/1743693x1.webp)
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 PSD111 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 |
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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 it’s base plate using the tabs protruding from it’s body with the other hand.
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| HEATING SYSTEMS |
| COOLING SYSTEMS | |||
| W | W | H | 4 | W |
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| RH RC R | V | 5 |
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| RH | RH |
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P |
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| P |
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J R | B |
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| J R | B |
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U O |
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| U O |
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M V |
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| M V |
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P I | O |
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| P I | O |
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R E |
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| R E |
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E D |
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D | RC |
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| D | RC | R RC | V |
| Y |
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| Y | Y C* | 6 |
| G | F |
| G | F | ||
| G |
| G | ||||
| C TC B |
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| C B TC | |||
| C |
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| C | |||
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| OPTIONAL |
| OPTIONAL |
ALL COMMON WIRES ARE OPTIONAL | ALL COMMON WIRES ARE OPTIONAL |
AND MAY BE TAPED OFF | AND MAY BE TAPED OFF |
| * IF Y AND "C" ARE BOTH PRESENT, |
| "C" IS THE COMMON WIRE |
HEATING / COOLING SYSTEMS | HEATING / COOLING SYSTEMS |
4- or | 5- or |
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| W | W |
| H | 4 |
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| W | W |
| H | 4 |
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| RH RC R | V | 5 |
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| RH |
| V | 5 | |||
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| RH |
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| RH |
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J | P | B** |
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| DO NOT CONNECT |
| R | B** |
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| DO NOT CONNECT | ||
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| A "B" WIRE HERE | J |
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| A "B" WIRE HERE | ||||
U | O | B |
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| E | B |
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| UNLESS YOU ARE SURE | U M |
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| UNLESS YOU ARE SURE | ||||
M V | O |
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| THAT IT IS CORRECT | M | O | O |
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| THAT IT IS CORRECT | |||
P | I | O |
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| P | O |
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E |
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| OPTIONAL | E | V |
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| OPTIONAL | ||
R D |
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| E | RC |
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| R D | RC | RC R |
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| D |
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| Y | Y C* |
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| Y | Y C* |
| 6 | ||
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| G |
| F |
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| G |
| F |
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| G |
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| G |
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| C | B TC |
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| C | B TC |
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| C | OPTIONAL |
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| C | OPTIONAL | ||||||
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ALL COMMON WIRES ARE OPTIONAL | ALL COMMON WIRES ARE OPTIONAL |
AND MAY BE TAPED OFF | AND MAY BE TAPED OFF |
* IF Y AND "C" ARE BOTH PRESENT, | * IF Y AND "C" ARE BOTH PRESENT, |
"C" IS THE COMMON WIRE | "C" IS THE COMMON WIRE |
** IF A "B" WIRE IN YOUR SYSTEM IS A | ** IF A "B" WIRE IN YOUR SYSTEM IS A |
SYSTEM COMMON, THEN CONNECTING IT | SYSTEM COMMON, THEN CONNECTING IT |
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BASE | W |
RH | |
| B |
| RC O |
| Y |
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.
AT THE "B" TERMINAL MAY CAUSE | AT THE "B" TERMINAL MAY CAUSE |
DAMAGE TO YOUR SYSTEM | DAMAGE TO YOUR SYSTEM |
TYPICAL 2 WIRE HEAT HOOKUP | TYPICAL 3 WIRE HEAT HOOKUP |
24 VAC AND MILLIVOLT SYSTEMS | WHERE THIRD WIRE IS FAN WIRE |
G |
C |
TERMINALS |
ATTACHING WIRES
Drill a
each screw location, and insert the
plastic anchors provided. Then mount the base as described below.
P
J R U O M V P I E D R E
D
W |
RH |
B |
O |
RC |
Y |
GAS
VALVE
AC
24 XFMR LINE VAC
P
J R U O M V P I E D R E
D
W |
RH |
B |
O |
RC |
Y |
GAS
VALVE
AC
24 XFMR LINE VAC
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
G |
C |
OPTIONAL COMMON
G |
C |
FAN
OPTIONAL
COMMON
the wall with the two screws provided.
TYPICAL 4 WIRE HOOKUP
HEATING AND COOLING
WIRING DIAGRAMS
These diagrams are provided for new installations or
| W |
P | RH |
J R | B |
U O | |
M V | |
P I | O |
R E | |
E D |
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D | RC |
| Y |
| G |
| C |
TYPICAL 5 WIRE HOOKUP
HEATING AND COOLING
GAS
VALVE
AC
24 XFMR LINE VAC
COOL
COMPRESSOR
FAN
OPTIONAL
COMMON
TYPICAL SINGLE STAGE HEAT PUMP
HEATING AND COOLING
J R U E M M P O E V R DE
W
RH
B
O
RC
Y
G
C
24
VAC
24
VAC
OPTIONAL COMMON
GAS
VALVE
AC
XFMR LINE
AC
XFMR LINE
COOL
COMPRESSOR
FAN
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| USE "B" OR "O" |
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| BUT NOT BOTH |
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P | RH |
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J R | B |
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U O | B |
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M V | CHANGEOVER | |||
P I | O | OR | ||
E D | O | VALVE |
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R E |
| 24 |
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D | RC |
| VAC | AC |
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| XFMR | ||
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| LINE | ||
| Y |
| HEAT |
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| G |
| COMPRESSOR | |
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| FAN |
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| C | OPTIONAL |
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| COMMON |
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NOTE: ADD JUMPER BETWEEN "W" AND "Y"
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