Pentax RTH2510 Quick Installation Guide
Quick Installation Guide
RTH2510
7-day Programmable Thermostat
Do you need assistance?
We are here to help.
Call 1-800-468-1502.
Programmable Thermostat RTH2510
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This thermostat is compatible with the following
systems:
• Gas, oil or electric furnace
• Central air conditioner
• Hot water system with or without pump
• Millivolt system
• Central heating and cooling system
• Heat pump without auxiliary/backup heat
• Heat pump with auxiliary/backup heat
Identify System Type
This thermostat cannot be used on
multistage systems.
1.
1
Quick Installation Guide
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1) Turn power off at the heating/cooling system.
2) Remove old thermostat, but leave wallplate with
Remove Old Thermostat
wires attached.
Do not remove wallplate yet.
2.
MERCURY NOTICE: Do not put your old
thermostat in the trash if it contains mercury in a
sealed tube. Contact your local waste
management authority for instructions regarding
recycling and proper disposal.
2
Programmable Thermostat RTH2510
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If any wires are not attached to your old thermostat or are
attached to a terminal marked C or C1, they will not be
connected to your new thermostat. Wrap the bare metal end
of each of these wires with electrical tape, so it cannot touch
and short other wires.
Identify Wires
Do not use
non-connected wires.
Do not use C or C1 wires
Identify and label each wire.
IGNORE WIRE COLORS:
Use terminal screw
designations to identify
wires.
Disconnect wires and remove the old wallplate only
after all wires are labeled. Wrap the wires around
a pencil to prevent them from falling though the
wall opening.
3.
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Quick Installation Guide
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1) Loosen the locking screw at the bottom of the
2) Separate the thermostat from the wallplate as per
3) Position the wallplate against the wall and mark
4) Drill holes at the marked positions and insert
5) Pass the wires through the large opening located
6) Secure the wallplate to the wall with supplied
7) Connect the wires to the terminals.
Mount New Wallplate
thermostat. Note that the screw is captive and
cannot be removed from the wallplate.
Figure 1.
hole positions with a pencil.
NOTE: Levelling is for esthetics only and will not
affect the performance of the thermostat.
supplied wall anchors.
at the bottom center of the wallplate as per
Figure 2.
mounting screws as per Figure 3.
Figure 2
Figure 1
Figure 3
4.
4
Programmable Thermostat RTH2510
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Conventional Systems (Typical Wiring)
1) Match each labeled wire with the terminal having
2) Loosen the terminal screws using a screwdriver,
3) Push any excess wire back into the wall opening.
Connect Wires
the same letter.
insert the wires, then tighten the screws.
• Labels don’t match? See page 6.
• Have a heat pump with auxiliary/backup heat, see pages 7-8.
• Call 1-800-468-1502 for wiring assistance.
5.
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Quick Installation Guide
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Connect Wires (cont’d)
Conventional Systems (Alternate Wiring)
Do not use C, C1 or X wire. Do not use B wire if you already
have O wire. Wrap bare end of wire with electrical tape.
This thermostat cannot be used if your old thermostat had
any two of the following wires: R, RC, RH, 4 and V.
Place a jumper (piece of wire) between Y and W/AUX if you
are using a heat pump without auxiliary/backup heat.
6.
6
Programmable Thermostat RTH2510
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Heat Pump Systems with Auxiliary/Backup Heat
(Typical Wiring)
1) Match each labeled wire with the terminal having
2) Loosen the terminal screws using a screwdriver,
3) Push any excess wire back into the wall opening.
Connect Wires (cont’d)
the same letter.
insert the wires, then tighten the screws.
7.
Labels don’t match? See page 8.
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Quick Installation Guide
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Connect Wires (cont’d)
Heat Pump Systems with Auxiliary/Backup Heat
(Alternate Wiring)
If your old thermostat had E and Aux wires (or alternate
wires), connect both wires to AUX terminal.
Do not use L wire. Wrap bare end of wire with electrical tape.
Do not use C or X wire. Do not use B wire if you already have
O wire. Wrap bare end of wire with electrical tape.
This thermostat cannot be used if your old thermostat had
any two of the following wires: R, RC, V or VR.
8.
8
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