Specifications

Control Valves - SMARTLINK
®
MRV
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combustion systems for industry
Maxon reserves the right to alter specifications and data without prior notice.
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10-30.7-62
E - i - 3/14
50120624-001/
Commissioning Procedure with Control Interface
SMARTLINK
®
MRV 10-Point Commissioning Procedure with Control Interface
a) Disable burner light-off by turning off the burner management system or disabling a combustion permissive so that interlocks
cannot be proven. Turn on the combustion blower.
b) Execute Command A-0, Enter Manual Mode. With the ADJUST switch in the up (INDEX) position, push the INC/DEC switch
momentarily to advance the firing rate to position index #9.
c) Execute Command A-3 and select the SMARTLINK
®
Air Valve Actuator’s number by using the INC/DEC switch to light the
desired valve number. (The number of the Air Valve Actuator is on the unit’s label.) Execute Command A-5, Set Max Posi-
tion & Ramp, and adjust the air valve maximum position to satisfy the pressure/flow requirements of the burner. When this
command is executed, both the yellow and green run lights will be flashing indicating the system is in Position Setup Mode.
d) With the ADJUST switch in the middle (ADJ) position, push the INC/DEC switch up or down to change the valve position.
Each push of the INC/DEC switch moves the valve 0.1 degrees. If the switch is held in the up or down position for more than
3 seconds, the valve will move in 0.5 degree steps up to a total travel of 8 degrees from the stored valve position. (All the
numbered lights will momentarily flash when this 8 degree limit or the maximum valve travel is reached.) After moving the
valve to the desired position, press the ENTER button to save the position setting. The command ‘a’ light will momentarily
turn off and then back on (solid) after the position is saved. (Any numbered light that was blinking will also momentarily turn
off and then resume blinking after the position is saved.) Record the valve position feedback in milliamps (mA) or percent
that is present on the OUT+/- terminals of the Control Interface.
e) Execute Command A-0, Enter Manual Mode, again and move to position index #0. Execute Command A-6, Set Min Position
& Ramp, and adjust the minimum air valve position in the same manner as the maximum position was adjusted in step d.
f) Repeat steps b through e for all other air valves installed. SMARTLINK
®
MRV is shipped with factory default minimum and
maximum valve positions of 6.0 and 60.0 degrees, respectively.
g) Momentarily set the mode switch in the RUN position, re-enable the burner management system and light the burner. Exe-
cute Command B-6 to ensure the auto ramp function is set to #1, ON. Select the fuel valve for adjustment using Command
A-3 and then execute Command A-6, Set Min Position and Ramp. This command permits adjustment of the minimum posi-
tion and then creates a linear ramp to the current maximum position. The system is placed in Position Setup Mode, indicated
by the flashing of both the yellow (MANUAL) and green (RUN) lights. With the ADJUST switch in the middle position, trim the
fuel valve's position at index #0 (minimum) based on burner pressure or flow measurement equipment as performed in step
d above. Repeat this step to adjust the minimum and linear position ramp for all other fuel valves in the system.
h) After adjusting index #0 (and forcing a linear position ramp) for the fuel valve, place the adjust switch in the INDEX (up) posi-
tion and execute Command A-2 (Enter Position Setup Mode). Move the MRV firing rate to the next whole integer position
index (index #1) by momentarily pressing the INC/DEC switch until the desired index number is turned ON. Move the
ADJUST switch back to the middle (ADJ) position. Use the INC/DEC switch to adjust valve position based on burner pres-
sure or flow measurement and press ENTER to save the profile to memory as described in step d above. Repeat this adjust-
ment procedure for each whole integer index up to and including index #9 (maximum). If necessary, make gas pressure
regulator adjustments at index #9 and then work back down through the lower indexes making adjustments as required.
i) After the last adjustment is made in Position Setup Mode, use the INC/DEC switch to move to position index #9 (or the high-
est position index adjusted for all valves) with the ADJUST switch in the INDEX (up) position. Select the air valve using Com-
mand A-3 and then execute Command A-4, Commission Valve. Repeat this step for each installed SMARTLINK
®
MRV valve
actuator. The commission command stores the selected valves current position index as its maximum allowable position
index while in RUN mode (i.e. under 4-20 mA firing rate control). If one valve has a "maximum run index" less than the other
commissioned valves, the system will not modulate above the lowest run index. The system will also not modulate in RUN
mode if any valve is not commissioned.
j) Record in the SMARTLINK
®
MRV commissioning table (Table 16, page 10-30.7-87 and -88) the position of each valve and
pressure (or flow) at each index. Execute Command C-6 to save the profile as a backup. Move the MODE switch to the
RUN position and set the user’s temperature controller to AUTO.