Application; Installation - Honeywell ML7999C Product Data

10-5/16
(277)
4-27/32 (123) 2-1/2 (64)
Fig. 2. V5197A Firing Rate Gas Valve, with
mounting bracket (included) and ML7999C Actuator
(not supplied), dimensions in in. (mm).

INSTALLATION

When Installing this Product...
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a
hazardous condition.
2. Check the ratings given in the instructions and on the
product to make sure the product is suitable for your

application.

3. Installer must be a trained, experienced service
technician.
4. After installation is complete, check out product
operation as provided in these instructions.
WARNING
Fire or Explosion Hazard.
Can cause property damage, severe personal
injury, or death.
Tighten the hub setscrews to a torque of
60 lb-in. (7 N•m).
WARNING
Electrical Shock Hazard.
Can Cause serious injury or death.
Disconnect power supply before installation.
ML7999C UNIVERSAL PARALLEL-POSITIONING ACTUATOR
7-1/8
(181)
3-25/32
(96)
6-7/16 (165)
M17528
3
Location
CAUTION
Actuator Damage Hazard.
Deteriorating vapors and acid fumes can damage
the actuator metal parts.
Install actuator in areas free of acid fumes and
other deteriorating vapors.
CAUTION
Equipment Damage Hazard.
Temperature extremes will damage actuator.
Do not locate actuator where ambient temperatures
will exceed the limits listed in the Specifications
section.
CAUTION
Equipment Damage Hazard.
Excessive vibration will damage actuator.
Do not locate actuator where vibration will exceed
the limits listed in the Specifications section.
Mounting ML7999C Actuator
The actuator mounts on a 1/2 in. round or square shaft. For
shafts smaller than 1/2 in, self-centering adapters are
available for 5/16 in. and 3/8 in. shafts. For shafts larger
than 1/2 in., adapters are available for 5/8 in., 3/4 in., and
9/16 in.
CAUTION
Equipment Damage Hazard.
Lateral forces on actuator hub will damage
actuator.
Make sure actuator is mounted square with bracket
and with shaft centered in actuator hub or binding
can occur, damaging the actuator.
1. Place the actuator over the shaft, see Fig. 3.
2. Position and seat the actuator.
3. Rotate the shaft to match the actuator position.
4. Install the mounting bracket accessory (not
included), if needed. See Fig. 4.
5. Partially tighten hub setscrews to ensure actuator
seats firmly against mounting bracket with shaft
centered in hub.
6. Tighten the anti-rotation bolt to the torque
recommendation for the selected bolt/nut.
7. Tighten the hub setscrews against the shaft to a
torque of 60 lb-in.
32-00079EF—01