Rheem 97MDV060 Series Installation Instructions Manual page 71

HUMIDIFICATION/DEHUMIDIFICATION
C2. WITH NON-COMMUNICATING THERMOSTAT
(REQUIRES OPTIONAL HUMIDISTAT)
For non-communicating thermostats, an optional
humidistat must be installed. Controlled humidification and
dehumidification can be accomplished using a humidistat
as shown in Figures 50 or 51. These figures show
FIGURE 50
WIRING FOR OPTIONAL DE-HUMIDIFICATION AND HUMIDIFICATION (WITH OPTIONAL HUMIDISTAT AND HUMIDIFIER).
NOTE: CAN BE USED WITH COMMUNICATING OR NON-COMMUNICATING SYSTEMS.
ST-A1194-79-00
ST-A1194-79-00
FIGURE 51
WIRING FOR OPTIONAL DE-HUMIDIFICATION AND HUMIDIFICATION (WITH OPTIONAL HUMIDIFIER) (HUMIDIFIER WITH INTERNAL
POWER SUPPLY. NOTE: FOR USE WITH NON-COMMUNICATING SYSTEMS.
HUMIDISTAT
HUMIDISTAT (24V)
(CONTACTS OPEN
(24V)
WHEN HUMIDITY
(CONTACTS
IS ABOVE SET POINT)
OPEN
WHEN
HUMIDITY IS
ABOVE SET
POINT)
ST-A1194-80-00
ST-A1194-80-00
HUMIDISTAT
HUMIDISTAT (24V)
(CONTACTS OPEN (24V)
WHEN HUMIDITY
(CONTACTS
IS ABOVE SET POINT)
OPEN
WHEN
HUMIDITY IS
ABOVE SET
POINT)
SPST RELAY WITH N.O.
CONTACTS RATED 24V OR
110V CONTACTS AS NECES-
SARY FOR HUMIDIFIER
1
2
R
C
HUM STAT
W1
W2
G
Y1
Y2
B
S1
S2
SA1 SA2 OAT1 OAT2
S3
SPST RELAY WITH N.O. CONTACTS
SPST RELAY WITH
RATED 24V OR 110V CONTACTS AS
RATED 24V OR 110V
NECESSARY FOR HUMIDIFIER
CONTACTS AS NECESSARY
FOR HUMIDIFIER
installation of a humidifier with external and internal power
supplies respectively. Dehumidification operation will be
disabled if the dipswitch S2-8 is in the "OFF" position. If
this switch is in the "ON" position, dehumidification control
will be active.
1
2
R
C
HUM STAT
W1
W2
G
Y1
Y2
B
S1
S2
L1
SA1 SA2 OAT1 OAT2 HUM HUM EAC
S3
NEUTRAL OR
COMMON
NEUTRAL OR COMMON
- +
SPST RELAY WITH
N.O. CONTACTS 110 OR 24V POWER
110V OR 24V
RATED 24V OR 110V
SUPPLY AS NECES-
POWER SUPPLY
CONTACTS AS NECESSARY
AS NECESSARY
SARY FOR HUMIDIFIER
FOR HUMIDIFIER
FOR HUMIDIFIER
SWITCH #S2-8 MUST BE IN "ON"
SWITCH #S2-8 MUST BE IN "ON" POSITION
POSITION (NOTE: FACTORY (NOTE: FACTORY POSITION IS "OFF").
TURNING THIS SWITCH "OFF" WILL DISABLE
POSITION IS "OFF") TURNING THIS
DEHUMIDIFICATION OPERATION WITH A
SWITCH "OFF" WILL DISABLE
NON-COMMUNICATING THERMOSTAT
DEHUMIDIFICATION OPERATION
WITH A NON-COMMUNICATING
THERMOSTAT
L1
HUM HUM EAC
NEUTRAL OR
COMMON
NEUTRAL OR COMMON
+110 OR 24VAC
+110V OR 24VAC
N.O. CONTACTS
SWITCH #S2-8 MUST BE IN "ON"
SWITCH #S2-8 MUST BE IN "ON" POSITION
POSITION (NOTE: FACTORY
(NOTE: FACTORY POSITION IS "OFF").
POSITION IS "OFF"). TURNING THIS
TURNING THIS SWITCH "OFF" WILL DISABLE
DEHUMIDIFICATION OPERATION WITH A
SWITCH "OFF" WILL DISABLE
NON-COMMUNICATING THERMOSTAT
DEHUMIDIFICATION OPERATION
WITH A NON-COMMUNICATING
THERMOSTAT
HUMIDIFIER WITH
HUMIDIFIER WITH
EXTERNAL 110V OR
EXTERNAL 110V 04
24V POWER SUPPLY
24V POWER SUPPLY
HUMIDIFIER WITH
HUMIDIFIER WITH
INTERNAL POWER
INTERNAL POWER
SUPPLY
SUPPLY
71