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W180 ZONE CONTROL SYSTEM
Fig. 23—Typical wiring for two HVAC systems to assure power supply isolation.
120 VAC
120 VAC
NOTE:
1. TO ENSURE ISOLATION, R1 MUST NOT BE CONNECTED TO R2.
2. TO ENSURE ISOLATION, THE TRANSFORMER AT POINT X MUST NOT BE CONNECTED TO AN EARTH GROUND.
HONEYWELL TotalHome
Wiring and connections between the TotalHome
tem and the W180 System are provided by the installer of
®
the TotalHome
System. The TotalHome
W180 System should each have their own, separate HBus
networks. This allows the systems to work independently
of each other. After verifying that both systems are operat-
ing properly as stand-alone systems, they can be intercon-
nected through the HBus network.
®
The TotalHome
tween the two controllers, one for HBus Data + (H3) and
one for HBus Data – (H4), and mark these wires at both
ends.
Prior to servicing either system, disconnect the inter-
connecting wires. Reconnect these wires after servicing
is completed. Verify proper operation of the combined
system.
S321A TOUCHPADS
NOTES:
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazardous
condition.
2. Check the ratings and description given on the prod-
uct to make sure the product is suitable for your
application.
3. Installer must comply with all local building codes
and ordinances when installing this product.
68-0139
SYSTEM #1
R1
COMP
SYSTEM #2
COMP
®
SYSTEM
®
System and the
installer will connect two wires be-
W
G
Y
R8285A1048
OR EQUIVALENT
X
R2
W
G
Y
4. Installer must be a trained, experienced service
®
Sys-
technician.
5. The Touchpad may be mounted in a 3-gang junction
box or in a hole cut in a drywall panel.
6. After installation is complete, check out product
operation as provided in these instructions.
CAUTION
Disconnect power before installation to prevent
electrical shock or equipment damage.
The Touchpad may be located in any room. However,
mounting in bathrooms and other high humidity areas is not
advised. Multiple Touchpads may be installed for conve-
nience. Because the Touchpad does not perform tempera-
ture sensing, location is not as limited as for a thermostat.
The Touchpad may be located at a customer-specified
height above the floor. When the customer does not specify,
mount the Touchpad for best viewing (at or slightly below
eye level; usually 5 ft., 4 in. [1.63m] above the floor).
Install and wire the Touchpad as follows:
1. Remove the Touchpad from its package. Set aside all
mounting materials (for example, screws, plastic screw
anchors) until later in the mounting procedure.
2. Use a flat-bladed screwdriver to remove the trim ring
from the Touchpad (Fig. 24). Set aside the cover until the
Touchpad has been mounted.
28
RELAY CONNECTIONS
RLY 1
1/2 com
RLY 2
spare A
RLY 3
3/4 com
RLY 4
spare B
spare C
RLY 5
5/6 com
RLY 6
spare D
RLY 7
7/8 com
RLY 8
M8167
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