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installation
Remove Old Thermostat
1.
Turn off power to thermostat at main fuse or circuit breaker box.
Ensure that ALL power is disconnected. to prevent electri-
▲
cal shock and /or equipment damage, disconnect electrical
power to the system at the main fuse or circuit breaker until
!
installation is complete.
2.
Remove the front cover of old thermostat. With wires still at-
tached, remove wall plate from the wall. If the old thermostat has
a wall mounting plate, remove the thermostat and the wall mount-
ing plate as an assembly.
3.
Before removing wires from old thermostat, label each wire
with the terminal designation from which it was attached.
Disconnect the wires from the old thermostat one at a time. do
4.
not let wires fall back into the wall.
attention: MerCury notiCe
This product does not contain mercury. However, this product may
replace a product that contains mercury. Mercury and products contain-
ing mercury must not be discarded in household trash. Do not touch any
spilled mercury. Wearing non-absorbent gloves, clean up any spilled
mercury and place in a sealed container. For proper disposal of a prod-
uct containing mercury or a sealed container of spilled mercury, contact
your local hazardous waste center.
Jumper and Circuit Board Selections
JP1 Jumper selection – remote temperature sensor: Removal
of this jumper allows the temperature sensor to be located in a remote
location. Accessory sensors are available in standard 60" lengths but
can be extended to meet application requirements. When running probe
beyond 60" care should be taken to avoid sources of EMF.
•
The remote probe input can be used with a condensate overflow
switch (CO), either in conjunction with a remote probe (normally
closed CO switch) or with local sensing (normally open CO
switch). When the condensate switch activates, the T170 will
display the service wrench and disable all outputs.
JP3 Jumper selection – HVaC setback systems: This jumper is
shipped in the open position to allow for Setback Operation. Place-
ment of a jumper allows for Occupancy Detection and Door Switch Only
Operation. See Choice Below:
•
Setback Operation (Remove JP3): When installed, the TH170
Heating and cooling setback limits are used as temperature
control points. Fan operation in setback is cycled with demand.
Pressing any button will override setback for 1 hour. Setback will
© COPYRIGHT 2008PECO, INC. ALL RIGHTS RESERVED.
override any user setting except if the control is turned to OFF.
Units with an off-override factory setting will override the OFF
setting. Intelligent Occupancy Sensors like the SD200-001 and
SD200-002 can be used with this input to set the HVAC system to
control at setback limits.
•
Occupancy Detection (Install JP3): The TH170 can be used
with PECO S200 series occupancy detection equipment. The
occupancy and door switch inputs are designed to connect to the
SB200 slave sensor and SE200 door switch. The Occupancy
Sensor is a low-level switch that is open when there is occupancy
and closed when unoccupied. The Door Switch is a low-level
switch that is open when the door is open and closed when the
door is closed. This system requires both an Occupancy Sensor
and a Door Switch.
•
Door Switch Only Operation (Install JP3): A stand alone door
switch can be connected to the TH170 to disable the HVAC sys-
tem if the door is left open for more than 2 minutes. A one-time
ten minute override can be initiated by pressing any thermostat
key.
JP4 Jumper selection – unused
Mounting Thermostat
1.
Thermostat mounts to a 4" x 4" box with a 2" x 4" mud ring
mounted horizontally (see diagram).
2.
Pull wires through the hole of the thermostat base.
3.
Mount thermostat base to the wall using the enclosed mounting
screws. Tighten screws evenly but do not over tighten.
4.
Verify that the circuit board is firmly snapped into the cover and
has not been dislodged during handling.
5.
Match and connect equipment wire thermostat using the appropri-
ate wiring schematic as shown in the diagram.
6.
Wire nut all unused wires or terminate properly according to local
building codes.
7.
Push excess wire into wall and plug hole with a fire-resistant
material (such as fiberglass insulation) to prevent drafts from af-
fecting thermostat operation.
8.
Install the cover assembly. Firmly press cover to engage the
cover locking snaps. Should the cover need to be removed in the
future, use a flat edged tool to put pressure on the base sides.
This will release the four side latches.
9.
Turn on power to equipment.
All wiring connections must be made
inside the electric box or the TH170
may be damaged.
P/N 69290 3220-2088 REV 0 PAGE 2
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