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Document: GFH-NT 1500-4000 IM 14 DEC 2016
Gas Fired Heater Instructions
©2016 NOVATEC, Inc. All Rights Reserved
9.0 Place the actuator in the orientation by which it will be attached to the mounting bracket. Slide
the actuator and coupling assembly onto the butterfly valve shaft and attach carefully. Take
precaution not to move the butterfly valve from its minimum position setting.
10.0
Attach a M6 X 16 mm hex head bolt with flat and lock washers through the bracket to the
actuator. Install the screw through the coupling, making sure it is in alignment with the hole in
the butterfly valve.
11.0
Securely tighten the screw on the coupler.
12.0
Confirm the position and tightness of all connections.
13.0
Make all electrical connections and apply power.
14.0
Verify that the stroke motion is smooth over its entire range and that all parameters are
correct.
15.0
Adjust the process Temperature above ambient. Check that the actuator opens the gas
butterfly valve to within 2 degrees of full open but not more than the maximum rotation of the
butterfly valve, which is 75 degrees. Adjust if necessary
There are other actuator parameters that are not used. Refer to the manufactur
er’s bulletin located
in the back section of this manual for further details.
A helpful parameter when setting up the actuator is to change the operational mode from automatic
(based on the 4-20 ma input) to manual (actuator shaft position set by manually pushing the
UP
or
DOWN
keys.
CAUTION: If you place the actuator in manual mode as described below, return to automatic
mode before operating the gas fired heater. Do not leave the gas fired process heater
unattended when in manual mode.
16.0
To place the actuator in manual mode (Manual Position Select):
16.1 Press the
ENTER
key; the message “SC” will appear on the display.
16.2 Press the
UP
or
DOWN
key until the number “05” appears in the display.
16.3 Press the
RESET
key to complete the sequence.
17.0
To return to automatic mode (Signal Input Select):
17.1 Press the
ENTER
key; the message “SC” will appear on the display.
17.2 Press the
UP
or
DOWN
key until the number “06” appears in the display.
17.3 Press the
RESET
key to complete the sequence.
Below is a summary listing of the actuators setup parameters requiring adjustment and the factory
settings. Refer to the manufacture's instruction manual in the back section of this manual for
complete details.
13.2 ACTUATOR PARAMETER FACTORY SETUP SUMMARY
Parameter Selection
Code Setting
Factory Setting
Low Fire Stop (LF)
15 Down
15
High Fire Stop (HF)
15 UP
90
Control Signal Loss (LO)
12 Down
15
Automatic Signal Input Select
06
Yes
Clockwise (CW) Rotation
10
Yes
