I 5 | REFER to the back of the Control Unit: |
If you have Electric Heat or a Heat Pump you must place the Gas/Electric jumper in the ELECT position (thermostat controls the Fan).
If you have Gas Heat the Gas/Electric Jumper should be in the GAS position (furnace controls the Fan).
6 Heat Pump Switch
.If you have a HEAT PUMP: Change the NORMAL/PUMP switch on the back of the unit to PUMP.
.If your heat pump has auxiliary heat, select the DIFFERENTIAL jumper. This controls how often your auxiliary heat will come on. '2' is most comfort (cold climates) '4' is most efficient (warm climates)
The unit must be reset when a jumper is changed.
A | G | Y | W | RH | B | O | RC W2 | C |
|
| oC |
| ||
| Differential | jumper |
| ||
| jumper |
|
|
| |
GAS |
| 2 3 4 |
| PUMP | |
|
| C | SHORT24 | NORMAL | |
|
| SHORT | |||
ELECT |
| F ON | OPEN12 |
| |
|
|
|
| ||
Gas / Electric | 12/24hr |
|
|
| |
jumper | Normal/Heat Pump | ||||
jumper | |||||
Circuit | switch |
| PG 5 | ||
Board |
|
|
| ||
7 Install Batteries
The 8050C requires batteries to operate your system and retain its programming in memory.
.Switch MODE switch to OFF and the FAN switch to
.AUTO.
Insert 2 AA alkaline batteries according to the
.polarity noted in the compartment.
Press the RESET button to clear the transient program memory. Initially, LCD display will go off.
NOTE: Replace the batteries when this LOW battery indicator appears on the display or once a year. With batteries removed, you have approximately 30sec before your custom programming is lost.
BATTERY
| AA |
| |
| A |
|
|
A |
|
| |
|
| TIME | SET |
|
|
| |
| P |
| E |
| SD |
| |
OCK |
|
| TIM |
OT |
|
| |
TCL |
|
| |
SE | IMESLNCY |
| E |
| T ERGE |
| |
| EM |
| TIM |
| P |
| |
| EXT |
| TER |
ME | N |
| FIL IEW |
|
| REV | |
HO |
| LD |
|
DAY | MPHO |
| |
| TE COPY | FAN | |
RAM |
| SET | |
|
| ||
PROG |
| RE |
|
DE |
|
|
|
MO |
|
|
|
Please be aware of the following power options
1) The 8050C can run on batteries only. (2AA Alkaline)
The batteries will last well over 1 year. If the batteries are not replaced the thermostat
will stop working. |
|
2) The 8050C can run on the C wire if available. | (24 VAC ONLY) |
As shown in the wiring diagrams, The C wire is the other side of the 24VAC heating transformer.
If the C wire is used, the batteries are for AC power loss only and are not required.
PG 6
