3 REMOVING OLD THERMOSTAT
CONTINUED FROM FIRST PAGE
ATTENTION! This product does not contain mercury. How- ever, this product may replace a unit which contains mercury.
Do not open mercury cells. If a cell becomes damaged, do not touch any spilled mercury. Wearing
Mercury must not be discarded in household trash. When the unit this product is replacing is to be discarded, place in a suitable container and return to
4 MOUNTING AND WIRING
!WARNING
Do not use on circuits exceeding specified voltage. Higher voltage will damage control and could cause shock or fire hazard.
Do not short out terminals on gas valve or primary control to test. Short or incorrect wiring will damage thermostat and could cause personal injury and/or property damage.
Thermostat installation and all components of the sys- tem shall conform to Class II circuits per the NEC code.
Electric Heat or Single-Stage
Heat Pump Systems
This thermostat is configured from the factory to operate a heat/ cool, fossil fuel (gas, oil, etc.), forced air system. It is configured correctly for any system that DOES NOT require the thermostat to energize the fan on a call for heat. If your system is an electric or
Hydronic (Hot Water or Steam)
Heating Systems
This thermostat is set to operate properly with a
The factory default setting is forced air heat. Clipping jumper W905 on the circuit board will produce a longer heating cycle which is normally for hot water or steam (hydronic) systems. Both settings produce a very accurate temperature control and can be set to your personal preference. As received, the thermostat cycles the system just under 1˚F. With W905 clipped, the system cycles at approximately 1.5˚F.
!CAUTION
Take care when securing and routing wires so they do not short to adjacent terminals or rear of thermostat. Personal injury and/or property damage may occur.
TERMINAL CROSS REFERENCE CHART
New Thermostat |
| Other Manufacturers’ |
| ||
Terminal Designation |
| Terminal Designation |
| ||
RH | 4 | RH | M | * | * |
R5 | R | ||||
RC | R | R | V | - | - |
G | G | G | F | G | G |
W | W | W | H | 4 | W |
Y | Y | Y | C | Y6 | Y |
*These are
Energy Management Recovery (EMR)
This thermostat is set to operate with EMR. This causes the thermostat to start the heating or cooling system early to have the room temperature reach the program setpoint at the time the period is to start.
To disable EMR, clip jumper W903 (see Fig. 1).
Attach Thermostat Base to Wall
1.Remove the packing material from the thermostat. Gently pull the cover straight off the base. Forcing or prying on the thermostat will cause damage to the unit. If necessary, move the electric heat switch (see ELECTRIC HEAT SYSTEMS, above).
2.Connect wires beneath terminal screws on base using appro- priate wiring schematic (see figs. 2 through 7).
3.Place base over hole in wall and mark mounting hole locations on wall using base as a template.
4.Move base out of the way. Drill mounting holes.
5.Fasten base loosely to wall, as shown in fig. 1, using two mounting screws. Adjust until level, and then tighten screws. (Leveling is for appearance only and will not affect thermostat operation.) If you are using existing mounting holes, or if holes drilled are too large and do not allow you to tighten base snugly, use plastic screw anchors to secure subbase.
6.Push excess wire into wall and plug hole with a
Battery Location
This thermostat requires 2 “AAA” alkaline batteries to operate. If “LO BATTERY” is displayed, the batteries are low and should be replaced with fresh “AAA” Energizer® alkaline batteries. To replace the batteries, install the batteries along the top of the base (see fig. 1). The batteries must be installed with the positive(+) ends to the right.
