V404, V504, V524, V804, AND VS824 AUTOMATIC VALVE OPERATORS
7
95-6999-08
CALIBRATE OPERATOR AND INSTALL SETTING KNOB
Calibration is necessary whenever the V504, V524. operator or the bulb and bellows assembly is replaced. During
calibration, refer to Table 3 to correlate room temperature with the numbers on the setting dial.
V504/V524 WITH DIAL ON OPERATOR
1.
Light pilot as described under Pilot Lighting Proce-
dure. Place a reliable thermometer near the tem-
perature sensing bulb to measure room
temperature. Wait 5-10 minutes.
2.
If the main burner is on, turn the calibration knob
clockwise just until the burner goes off. If the main
burner is off, turn the calibration knob counter-
clockwise just until the burner goes on.
3.
Choose one of the red setting dials. Use Part No.
394018 when the knob can be reached and turned
directly; use Part No. 394138 when a rod and han-
dle will be installed on the dial.
4.
Slide the dial over the knob, so that the dial number
corresponding to the room temperature aligns with
the indicator on the valve body. See Table 3 and
5.
Insert the screw supplied with the dial and tighten
firmly while holding the dial in place.
6.
If using 394138 Dial, insert 1/4 in. rod (obtain
locally) into end of dial. Align hole in end with hole
in dial sleeve. Fasten with cotter pin.
7.
Turn dial to desired setting, making sure the cali-
bration knob is turning with the dial. If not, repeat
steps 2-5.
Fig. 12. Calibrating V504/V524 with dial on operator.
V504/V524 WITH DIAL MOUNTED ON CABINET.
1.
Light pilot as described under Pilot Lighting Proce-
dure. Place a reliable thermometer near the tem-
perature sensing bulb to measure room
temperature. Wait 5-10 minutes.
2.
Set the remote dial to the number corresponding
with the bulb temperature. See Table 3 and Fig. 13.
Fig. 13. Calibrating V504/V524 with dial mounted on
cabinet.
3.
If the main burner is on, turn the calibration knob
slowly clockwise until the burner goes off. If the
main burner is off, turn the calibration knob slowly
counterclockwise until the burner goes on.
4.
Slide the black locking knob over the calibration
knob with the setting indicator in the notch. See
Fig. 13. lnsert the screw supplied with the dial and
tighten firmly.
5.
Set remote dial to desired setting.
Table 3. Temperature Dial Setting Correlation.
Setting Dial Number
1
2
3
4
5
6
7
8
9
Approximate Temperature
35 F-75 F [2 C-24 C]-Range
35
[2]
40
[4]
45
[7]
50
[10]
55
[13]
60
[16]
65
[18]
70
[21]
75
[24]
50 F-90 F [10 C-32 C] Range
50
[10]
55
[13]
60
[16]
65
[18]
70
[21]
75
[24]
80
[27]
85
[29]
90
[32]