Aube Technologies TH148LE-P, TH147-P User Manual
TH147-P & TH148LE-P
2. Installation
Programmable Thermostats
Installation
and User Guide
1. Introduction
The TH147-P and TH148LE-P programmable thermostats can be
used to control:
• a gas, fuel oil or electric furnace - 2 or 3 wires
• a central air conditioner - 2 or 3 wires
• a hot water system with or without pump - 2 wires
• a millivolt system - 2 wires
• a central heating and cooling system - 4 or 5 wires
Attention: These thermostats are not compatible with heat pumps
or multi-stage systems.
Display
Adjustment
buttons
Backlight
button
Note: The installation must be performed by an electrician or a qual-
ified installer.
2.1 Removing the Old Thermostat
IN ORDER TO AVOID ANY RISK OF ELECTRIC SHOCK, CUT
POWER TO THE HEATING/COOLING SYSTEM.
n Remove the old thermostat to access the wires.
Attention: If the old thermostat was mounted onto an electrical box,
it might have been powered by 120/240 volts. In this case, the
TH147-P or TH148LE-P thermostat cannot be used.
o Identify and label each wire (with the corresponding letter on
the wire terminal) and remove them from the terminals.
p If necessary, strip the end of each wire
(maximum of 6 mm).
q Wrap the wires around a pencil to prevent
them from falling into the wall.
r If the hole in the wall is too big, insulate it
using a non-flammable material in order to
avoid air draughts behind the thermostat.
2.2 Installing the New Baseplate
For a new installation, choose a location approximately 1.5 m
(5 feet) above the floor and on an inside wall. Avoid draughty
areas (top of staircase, air outlet, etc), dead air spots (behind
doors), direct sunlight or areas near concealed pipes or chimneys.
System operating
mode selector
Functions
Heating/cooling control X X
Fan control X X
7-day programming including:
- Pre-programmed energy-saving schedule
- Early Start
- Temporary bypass
- Time display (12 h or 24 h)
Programmable cycle lengths X X
Temperature display in °C or °F X X
Backlit display X X
Battery replacement indicator X X
Filter replacement indicator X X
Unoccupied mode activated remotely (requires Aube’s CT240) X
Interchangeable faceplates (titanium, charcoal & taupe) X
Automatic daylight savings changeover X
Fan operating
mode selector
Programming
buttons
TH147-P
X
X
X
X
X
TH148LE-P
n Remove the thermostat faceplate.
o Loosen the locking screw in order to separate the thermostat
X
X
X
X
X
from its baseplate (the screw cannot be completely removed).
p Gently tilt the thermostat upwards.
q Mark and bore the appropriate mounting holes (or use the
existing holes). Insert the plastic anchors.
r Pass the wires through the opening of the baseplate and fix the
baseplate to the wall using the screws provided.
TH147-P and TH148LE-P 400-147-000-D 18/4/06 1/5
2.3 Connecting the Thermostat
Refer to the following table for matching the wire labels with the
thermostat terminals.
Terminals Description Wire labels
Rh Heating power supply Rh, R, 4, V
Rc Cooling power supply Rc, R
W Heating signal W, W1, H
Y Cooling signal Y, Y1, M
GFan G, F
Un / Un Input for a remote control device (TH148LE-P only) -
Note: Do not connect wires identified as C, X or B. Wrap the bare
end of these wires with electrical tape.
n Loosen the screws of the terminal
block and insert the wires in the
respective terminals.
o Tighten the screws.
Important: The red jumper wire between
Rh and Rc terminals must be removed in a
5-wire installation.
2.3.1 2-wire Heating
Heat relay
2.3.2 2-wire Cooling
2.3.5 4-wire Heating and Cooling
Heat relay
Cool relay
Fan relay
2.3.6 5-wire Heating and Cooling
Fan relay
Heat relay
Cool relay
Note: Remove the red jumper wire between terminals Rc and Rh.
2.4 Remote Control Input (TH148LE-P only
)
The TH148LE-P thermostat has an input to which a CT240 telephone controller (optional) or any other remote control system (e.g.,
home automation) can be connected. When the input receives a
12-VDC signal, the thermostat switches from its current mode to the
unoccupied mode and vice versa when the signal is removed.
The unoccupied mode can be used to re-adjust the temperature to
save energy when you are away for an extended period of time. To
set the unoccupied mode temperature, see section 4.
2.4.1 Connecting to CT240
Connect TH148LE-P terminals UN and UN to
CT240 terminals A and C (no polarity to observe).
2.3.3 3-wire Heating
2.3.4 3-wire Cooling
Cool relay
Heat relay
Cool relay
Fan relay
Fan relay
2.4.2 Connecting to a Home Automation System
Connect TH148LE-P terminals UN and UN to a
12-VDC circuit as shown.
2.5 Setting JP2 Jumper
The jumper specifies how the fan will operate when it is placed in
automatic mode.
JP2 jumper
Leave the jumper in this position if you
HG
have a gas or fuel oil furnace.
Place the jumper in this position if you
HE
have an electric furnace.
TH147-P and TH148LE-P 400-147-000-D 18/4/06 2/5
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