18-BH15D7-5
© 2006 American Standard Inc. All rights reserved
Model:
TAYPLUS103A
INSTALLER'S
GUIDE
ALL phases of this installation must comply with
NATIONAL, STATE AND LOCAL CODES.
Hybrid Comfort™ System
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work.
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INSTALLATION OF BONNET THERMOSTAT THT01248
(BAYSEN03ATEMPAA) ON ALL OIL FURNACES
"A" COIL APPLICATION (UPFLOW)
1. Remove the front cover panel from the "A" coil enclosure.
2. Select a location to make a 1-1/2" hole for the bonnet
thermostat to pass through (see figure 2) in front of the coil
baffle of "A" coil.
3. The location of the 1-1/2" hole should be on a vertical line
(plane) to the top of the "A" coil and approximately 4"- 6"
down from the front end of the coil.
4. With the template provided make the 1-1/2" hole in the coil
baffle and install the bonnet thermostat with the screws
provided in the kit.
5. Drill a 3/8" hole in the front cover panel for field wiring and
install the grommet provided with this kit.
6. Connect the bonnet thermostat leads in the Plus One Control
Center through the grommet. (See hookup diagram).
7. Replace the front cover panel on "A" coil enclosure and
secure.
"A" COIL APPLICATION (DOWNFLOW)
1. Select a location on the air entering side of the coil enclosure
to make a 1-1/2" hole for the bonnet thermostat to pass
through (see Figure 1, page 2).
2. The location of the 1-1/2" hole should be on a horizontal line
(plane) to the top of the "A" coil. The bonnet thermostat
cannot be in contact (touching) the coil.
3. With the template provided, make the 1-1/2" hole in the coil
enclosure and install the bonnet thermostat with the screws
provided .
GENERAL
The Plus One system was designed to combine warm air furnaces
(indoor units) with heat pumps for maximum comfort and energy
efficiency during the entire year.
This is compatible only with furnaces having 24V transformers at
least 35 VA.
The control center enclosure is made of galvanized steel, with an
attractive decorative logo on the front panel.
This enclosure is 9-3/16" x 7-1/8" x 2-1/2" in size. When the
cover is removed, the components are readily accessible for field
hook-up or service. All field electrical connections are to
terminal board, or wire nuts (field supplied). This assembly can
be mounted in any position.
INSPECTION
1. Unpack the Plus One Control Center and remove cover.
Included inside are:
Control Box Assembly
Installer's Guide
2. Check for any shipping damage. If there is any, report it to the
carrier immediately.
3. The field electrical connections and wiring must be done in
accordance with the "National Electrical Code" and must
comply with local electrical codes.
4. Minimum gauge 18 AWG thermostat
wire.
SYSTEM USAGE AND INSTALLATION
This system uses a heat pump outdoor section with an indoor
heat pump coil, a Plus One Control Center and a warm air
furnace.
The Plus One Control Center as shipped from the factory is for
operation in the "non-restricted" mode. For "restricted" opera-
tion, field wire in accordance with appropriate diagram (included
in these instructions). TAYSTAT250A is required.
1. The indoor coil must be installed on the supply side of the
furnace.
2. The Plus One Control Center is installed in close proximity to
the furnace.
3. The outdoor thermostat (when used in restricted operation
only) is installed in the outdoor section in accordance with
TAYSTAT250A installation requirements.
NOTE: For Load Shedding in the heating cycle, use the restricted
hook up diagram. The utility company's load shedding relay will
be wired in place of the ODT as shown. The utility company's relay
must be a SPDT switch type.
NOTE: Do not connect wires to the W terminal at the comfort
control terminal #1 at ODT if utility company requires lockout
(restriction) of gas furnace at an outdoor temperature above
the setting on the ODT. Emergency heat cycle and furnace
blower will come on if the comfort control is in Emergency
Heat mode.
