Adjustments - Honeywell V9055A Manual

V9055A,D MODULATING FLUID POWER GAS VALVE ACTUATOR
W R B
W R B
1 2
AUX COM
SWITCH
NC
NO
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
2 CIRCUIT CLOSED WITH ACTUATOR DE-ENERGIZED.
Fig. 4. Wiring for V9055 Modulating Gas Valve Actuator.
12
15
12 10
11
13
14
14
TERMINALS OF 203422C ADAPTER. [ ] TERMINALS TO V9055.
TERMINALS OF R4140 OR BC7000.
Fig. 5. Hookup of V9055 for firing rate
control with a 4-20 mA input.
203422C—V9055 Adapter (For 4-20 mA
Input) Installation
The 203422C Adapter Board allows the V9055 Modulating
Fluid Power Gas Valve Actuator to be controlled with a
4-20 dc mA input. The adapter mounts in the wiring
compartment and provides screw terminals for field wiring.
1. Remove the screws from terminals R,B and W on the
V9055 Actuator.
2. Position the adapter board to the R, B and W terminals
and install and tighten three screws (four screws pro-
vided in bag assembly) to the R, B, and W terminals.
3. Connect field wiring from 4-20 mA controller to the + and
- terminals on the 203422C adapter board. Be sure to
observe polarity.
CAUTION
Equipment Damage Hazard.
Incorrect wiring can damage the controller or adapter
board.
Be sure to observe polarity from the controller to the
203422C Adapter Board.
60-2311-11
PROPORTIONING CONTROLLER
(140 OHM POTENTIOMETER)
L1 HOT
1
L2
2
V9055 GAS VALVE ACTUATOR
M7323
[B] +
–
4 – 20 m A
[R]
CONTROLLER
[W]
TERMINALS OF RM7800.
4. Reconnect power.
5. With manual shutoff gas valve Closed, apply power to
the V9055 and check its operations with the 4-20 mA
temperature controller by manually incrementing and
decrementing the output; 4 mA input will drive the V9055
to low-fire position; 20 mA drives to high-fire. Assure
V9055 completes a full stroke.
6. Turn manual shutoff gas valve to the open position and
test the remainder of the system for proper operation.
7. If the V9055 is being used for firing rate control, connect
system according to the drawing in Fig. 5.
8. Sequence the burner through a normal startup.
CAUTION
Equipment Damage Hazard.
Improper wiring can cause equipment damage or
danger to personnel.
Label all wires prior to disconnection when servicing
valves. Wiring errors can cause improper and
dangerous operation. Verify proper operation after
servicing.

ADJUSTMENTS

+
IMPORTANT:
When using the V9055D with the V5055/V5097C or E
–
(two seals) Valves, match low-fire minimum adjust-
ment to the burner and the application. Too low of an
adjustment could result in loss of burner flame. Also
plan to check this low-fire adjustment at periodic
maintenance intervals.
Adjust Low-Fire Setting
M2494A
The low-fire setting is adjustable from approximately 0.14 to
0.65 inch valve stem travel (with respect to V5055B/V5097B
Gas Valve). The low-fire adjustment is factory-set at the
maximum position (approximately 50 percent of full gas flow
capacity). Refer to form 70-8311 for valve flow (capacity)
curves. Check to be sure the low-fire setting is at maximum
(fully clockwise) before starting the adjustment procedure. To
adjust:
1. Remove the lead to the V9055 terminal R. Jumper termi-
nal R to W. This will prevent the actuator from going to
the high-fire position.
2. Using a Phillips screwdriver, turn the low-fire adjusting
screw to the desired low-fire position. Do not push inward
on screw.
3. Shut down the burner, and then restart. Repeat several
times to be sure the low-fire setting is suitable for correct
burner lightoff.
4. Turn off power supply. Remove R-W jumper, and recon-
nect the lead to terminal R on the V9055.
Adjust the Auxiliary Switch (if used)
The auxiliary switch is adjustable throughout the stroke of the
actuator. With the switch installed in the actuator, turn the
adjusting screw (Fig. 3) clockwise
operate earlier in the stroke and counterclockwise
operate later in the stroke.
6
to cause the switch to
to