TWIN-FLO
ROOM T’STAT
1
2
115V LINE
CIRCULATOR
ZONE VALVE
W/AUX. SW.
TRANS
LOW VOLT
115/24V
MIN
MAX
T-STAT
(NEUTRAL)
L2
115/1/60
LINE IN
L1
BLUE
(HOT)
SPDT
2
1
3
BLOWER
WHT
MOTOR
BLK
RED
CAT-68254-A
BLUE
OFF
WIRING Diagram 3
Electrical Connections
CAUTION! For Supply Connections, use wires suitable for at least 194° F (90° C).
3.
A shaded pole motor is used to drive the Twin-Flo
III
blower on 115 -120 V. 60 hz. Since current drain is
very small, wiring codes for short circuit protection only will apply. The motor is connected in series with a
normally open aquastat in contact with the heating element. Therefore, the blower runs only when unit is suffi -
ciently hot and the switch is in the "min" or "max" position (not "off"). A ground screw is supplied with all units.
Electrical connections are to be made to all units following the diagrams below. Choose the diagram that
best suits your application.
Since the blower runs on all Twin-Flo
III
models only when the system circulator pumps hot water through
the unit, simply connect it to the 115 V line. The blower then starts after a short warm-up, and stops a few
minutes after the circulator shuts off (see diagram #1).
Adding a line voltage type room thermostat will permit the setting of a maximum room temperature (see
diagram #2). This 'T' stat will only operate the kickspace unit. If the circuit or system circulator is not running,
the kickspace heater will not operate.
All electrical connections must conform to local and national codes.
Connection through a circulator or zone auxiliary switch may also be used to permit instant shutdown of the
blower as the circulator stops (see diagram #3).
K-42
K-84
K-120
1 GALLON
2 GALLONS
3 GALLONS
.
50
.50
.74
.17'
.8'
1.2'
53
103
127
30.7
30.7
66.8
.22'
.95'
1.5'
AMP
K42
CFM (HIGH SPEED)
MOTOR INFORMATION
FRICTION LOSS (HEAD)
3200
3200
3200
.43'
1.45'
2.97'
.034
.034
.068
115
115
115
WATT
K84
VOLTAGE
RPM
K120
HP
MIN
MAX
T-STAT
(NEUTRAL)
L2
(GND)
WIRING DIAGRAM 1
GREEN SCREW
115/1/60
LINE IN
L1
BLUE
(HOT)
SPDT
2
1
3
BLOWER
WHT
MOTOR
BLK
RED
115V LINE
CAT-68252-A
BLUE
OFF
WIRING DIAGRAM 2
LINE VOLT
ROOM T’STAT
R
W
MIN
MAX
T-STAT
(NEUTRAL)
L2
(GND)
GREEN SCREW
115/1/60
LINE IN
L1
BLUE
(HOT)
SPDT
2
1
3
BLOWER
WHT
MOTOR
BLK
RED
115V LINE
CAT-68253-A
BLUE
OFF
