White Rodgers 1F85RF-275 Installationsanleitung Seite 5

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5
Figure 1 – Thermostat base
Figure 2 – Back of thermostat base
RC/PS
Switch
Position Description
RC For Hardwire Applications. Requires Common Wire
from System Transformer to "C" Terminal on Thermostat
PS For Power Stealing Applications. Use When Common
from the System Transformer is not Available for
Connection to the "C" Terminal on the Thermostat
RC/PS Switch (Thermostat Power Option)
NOTE: If set to PS (Power Stealing), the thermostat "C" terminal
must not have a wire connected.
When the system is not providing enough power for the
thermostat, the display will be bright when the system is not
running and dim when the system is running. If the system is
not providing enough power, we recommend connecting a
150 Ohm, 10 Watt resistor between terminals W and C of the
furnace or Y and C of the air conditioner, or both, to increase
the power provided.
ANTENNA
MOUNTING HOLE
MOUNTING HOLE
ELEC/GAS SWITCH
RC/PS
SWITCH
MOUNTING
HOLE
MOUNTING
HOLE
ANTENNA
WIRE
Figure 3 – Remote sensor base
REMOTE
COMMUNICATION
RECEIVER
ANTENNA
WIRE
Thermostat 24 VAC Requirement
The thermostat must have 24 VAC supplied for the receiver
to operate. When the system wiring is connected, if a system
common wire is connected to terminal C, the system is
providing 24 VAC to the thermostat. The RC/PS switch (see
Fig 1) must be in the RC position.
If the thermostat does not have a common wire connected to
terminal C, the thermostat can use Power Stealing to get the
required 24 VAC. The RC/PS switch must be in the PS
position.
INSTALLATION
Do not remove battery tag to power the sensor with batteries
until instructed to do so. The thermostat requires 24 volt system
power to operate correctly. If the thermostat goes blank, system
power is not reliable and will be corrected in the System Power
section below.
1. Remove the packing material from the thermostat and
sensor.
2. Pull the front cover of the thermostat straight off the base.
Forcing or prying will cause damage to the control.
3. Using the thermostat base as a template, place on the
selected wall locations and mark the location of all
mounting holes (Figure 1), and the hole for the thermostat
antenna wire illustrated in Figure 2.
4. Move base out of the way and drill the holes. If mounting
holes drilled are too large and do not allow you to tighten
base snugly, use the plastic screw anchors (provided) for
secure mounting.
5. Make sure the remote communication receiver is
plugged in properly to the thermostat and that the
antenna wire is routed through the thermostat subbase
as shown in Figure 2.
6. Insert antenna wire into the wall and position base into
mounting position.
7. Fasten base loosely to wall, using two mounting screws.
Place a level against bottom of base (leveling is for
appearance only and will not affect sensor operation)
and then tighten screws.
8. In the thermostat location, push excess wire into wall and
plug hole with a fire resistant material (such as fiberglass
insulation) to prevent drafts from affecting the thermostat
operation.
Mounting Thermostat and Sensor
CAUTION
!
To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse or
circuit breaker box until power is required.
Before disconnecting wires from the old thermostat, mark
wires for terminal identification so the proper wiring connec-
tions will be made to the new thermostat.
Remove Old Thermostat
Locate the thermostat/sensor about 5 ft. above floor level on
an interior wall in an area that represents the average room
temperature.
Do not mount directly on or near HVAC equipment or other
sources of electrical noise.
Avoid locations close to windows or near adjoining outside
walls, doors leading outside, areas close to air registers or
their direct air flow or areas with poor circulation like alcoves.
Avoid locating the sensor on a concrete wall, junction box or
metal plate. Make sure there are no electrical wires, metal,
pipes or duct work in the part of the wall chosen for the
sensor location.
For proper RF wireless communication, the antenna wire
MUST be installed into the wall. If the antenna wire is
hanging between the wall and the thermostat the RF
communication may not be reliable
Antenna wire must be installed into the wall, it can not be
between the thermostat and wall.
Thermostat and indoor sensor are not approved for
installation in unconditioned space.
Guidelines for Thermostat/Sensor Locations
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