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HUMIDISTAT
Fig. 38 — Humidistat Connections to UCB
Fig. 39 — RAV180 Unit with Hot Gas Re-Heat Dehumidification System
20
UNIT CONTROL
BOARD
C
HUM
G
W2
W1
Y2
Y1
R
THERMOSTAT
PROGRAMMABLE
THERMOSTAT
Rc
Rh
W1
G
Y2
C
O/W2/B
Y1
OAT
RRS
SRTN
HUM
D1
D2
V+
Vg
and Programmable Thermostat
Specifications subject to change without notice.
To Connect a Field-Supplied Thermidistat device
1. Route the Thermidistat multi-conductor thermostat
cable (field-supplied) through the bushing the unit's
louvered end panel.
2. Route the cable through the snap-in wire tie and up
to the web bushing near the control box.
3. Feed the cable through the bushing and into the bot-
tom left side of the control box after removing one of
the two knockouts in the corner of the box. Use a
connector to protect the cable as it enters the control
box.
4. Use the connector and the wire tie to reduce any
slack in the thermostat cable to ensure that it will not
be damaged by contact with the condenser coil.
5. The Thermidistat has dry contacts at terminals D1
and D2 for dehumidification operation (see Fig. 39).
Connect D1 to the R terminal on the UCB. Connect
D2 to the HUM terminal on the UCB. Refer to the
installation instructions included with the field-sup-
plied thermidistat device for more information.
TYPICAL UNIT WIRING DIAGRAMS
See Fig. 40 - 42 for examples of typical unit control and
power wiring diagrams. These wiring diagrams are mounted
on the inside of the unit control box. Refer to the wiring dia-
grams in the unit control box when making field power wir-
ing connections.
UNIT CONTROL BOARD
THERMOSTAT CONNECTIONS
C
HUM
G
W2
W1
Y2
Y1
R
RAV-180-01SI
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