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Replacement Notes - Honeywell ML6984 User Manual

Series 4000 direct coupled valve actuators
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ML6984, ML7984 SERIES 4000 DIRECT COUPLED VALVE ACTUATORS
NOTE: The 272630D position feedback/auxiliary switch
module cannot be used with ML6984 3-wire
installation. The 272630D requires continuous
power.
ML6984 XL10 Controller
Compatibility
XL10 controllers are designed to work with constant-speed
actuators. ML6984 actuators use direct current motors
which vary their speed as the valve seats or if power supply
voltage is not consistent. ML6984 actuators in 5-wire
mode offer 30 discrete positions only. To minimize
potential valve position drift, XL10 controllers should use
the 3-wire installation and be programmed for a daily valve
exercise cycle.
ML6984 On-Off Operation
For on-off operation, ML6984 requires a 24 Vac SPDT
contact. An interface relay such as RA889 is required to
power the anticipator heater of an electromechanical
thermostat such as T87F (See Fig. 17).
1
L1
R
L2
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
2
SET HEATING ANTICIPATOR TO MATCH CURRENT DRAW OF
RELAY 1K. DO NOT ROUTE RELAY CONTACTS THROUGH
THERMOSTAT.
Fig. 17. ML6984 with Honeywell T87F Round™
Thermostat.
If connecting the ML6984 directly to a T87F with a Series
20 sub-base, clip out the cooling anticipation resistor on
the sub-base between terminals R
for electrical compatibility with ML6984 but may result in
wider room temperature swings due to the loss of
anticipation.
95C-10939—11
1K1
2
B
R
W
W
T5
T6
1K
ML6984
M25501
and Y. This is needed
c

REPLACEMENT NOTES

1
24Vac
1
24Vac
1
CLASS 2 TRANSFORMER. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
Fig. 18. ML6984 with Honeywell T87K Round™
See Fig. 19, if connecting TH5110D or TH6110D
FocusPRO™ thermostats to ML6984. Configure the
thermostats for Series 20 operation.
TH5110D
Rc
TH6110D
R
Y
C
4
W
O/B
G
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
1
PROTECTION AS REQUIRED.
FACTORY INSTALLED JUMPER.
2
OPTIONAL 24 VAC COMMON CONNECTION.
3
CONFIIGURE SYSTEM TYPE TO HEAT ONLY IN THE INSTALLER SETUP.
4
5
TERMINALS R AND T5 ARE INTERNALLY CONNECTED.
Fig. 19. ML6984 with FocusPro™ Electronic Thermostat.
10
HEATING ONLY
W
R
Y
COOLING ONLY
W
R
Y
Thermostat.
THERMOSTAT WIRING TERMINALS
2
3
ML6984
POWER TO OPEN
B
W
R
AND POWER TO
CLOSE
MOTOR OR VALVE
T6
T5
5
(SERIES 20)
T6
T5
C
B
UP
W
DOWN
R
ML6984
T6
T5
C
B
UP
W
DOWN
R
ML6984
M25502
1
L1
R
(HOT)
C
L2
M25503

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