Guide

(*Do not rotate side outlet in its threads to avoid possible
leakage.)
i. Replace cover.
Final checkout of the installation
After any adjustment, set appliance in operation. Observe
several complete cycles to ensure that all burner components
function correctly.
6. Operation
Basic opertation
Knob-A (Figure 3) for manual pilot,
on-off function, and piezo activation.
Knob-B (Figure 3) for temperature
level selection with intergrated
thermostat providing snap action(on-
off) and modulation control for
minimum to maximum flow.
Ignition intrlock
The interlock device prevents the
re-establishment of gas flow – when
no pilot flame is present – until the thermocouple has cooled
sufficiently.
Adjusting temperature
Turn knob-B (Figure 3) toward higher numbers to increase
temperature, toward lower numbers to decrease. Remote
control versions contain a motor that activates this knob, or it
can also be operated manually.
Optional side-outlet control for 2-burner operation
Additonal side-mounted manual valve (knob-C, Figure 3)
primarily for 2-burner gas fireplace applications.
Lighting procedure
a. Turn knob-A (Figure 4) slightly
left towards the ‘IGN’ position
until reaching stop, press down
and hold for five seconds (only
pilot gas flows).
b. Continue pressing down while
turning further left to activate
piezo, continue to hold down for
10 seconds after pilot burner
has been lit. If pilot does not
light, steps a. and b. can be
immediately repeated. (See Note below)
c. Upon lighting, release knob and turn further left to ‘ON’
position (both pilot and main gas flows).
Note: If pilot flame is not established, equipment manufacturer
(OEM) will determine the number of additonal attempts to light
– and with continued failure the purge time.
Shut off procedure
a. Turn knob-A (Figure 4) right until reaching stop.
b. Press down slightly and continue turning right from ‘PILOT’
position to the ‘OFF’ position.
When the thermocoupler has cooled sufficiently (time will vary
based on themocouple type used), pilot lighting procedure can
be repeated. (See Ignition interlock.)
12
Figure 4
Figure 3
(Shown with cover)
7. Very high pressure surges in the gas supply line (or as a result
of exposing the system to high pressure) may result in serious
internal damage and cause leakage or affect control operation.
If you suspect tht a Mertik Maxitrol control has been exposed to
more than 1-1/2 times its maximum inlet pressure, turn off the
gas and have the system checked by an expert.
8. The outlet pressure of the control must be measured to make
sure it is in accordace with intended usage.
9. Caution should be used to guarantee that there is sufficient
inlet pressure to achieve the desired outlet pressure and no
readjustment of the outlet pressure setting should be made
unless the inlet pressure is within the proper limits for the
control. Failure to follow this may result in overfiring of the
appliance or other gas burning device.
10. A Mertik Maxitrol combination control must be used within its
ambient temperature range, and not in excess of its maximum
inlet pressure. The control can be used with all fuel gases.
11. In case of any doubt, please contact the Service Manager,
Maxitrol Company, Southfield, MI. Phone: [phone].
12. Specifications
Maximum Operating Inlet Pressure
1/2 psig (34.5 mbar)
Ambient Temperature (Control)
32° to 176° F (0 to 80° C), or 32° to 225° F (0° to 107° C) for
“T” Models
Control Range
Capacity: 10,000 – 85,000 BTU/hr
Outlet Pressure: 3” w.c. to 5” w.c. (7.5 to 12 mbar)
8” w.c. to 12” w.c. (20 to 30 mbar)
*Piezo & Cable
Min/Max Spark Gap: 3/4 mm
Min/Max Operating Temperature: -4° to 392° F (-20° to 200° C)
Min/Max Lead Lenghs: 150/1000 mm
(*Piezo wire should not be drawn down parallel against
lengths of metal –this can result in reduction or loss of power
to ignitor. When placing the ignition cable/piezo wire, care
should be taken not to stretch it too tightly. If possible, avoid
contact with the appliances’s metal parts, especially those with
sharp edges.)
Maximum Ambient Temperature (Sensor)
Control Range 55° – 95° F: Sensor 122° F ( 50° C)
Control Range 60° – 120° F: Sensor 160° F ( 71° C)
Control Range 85° – 175° F: Sensor 230° F (110° C)
Control Range 210° – 640° F: Sensor 715° F (380° C)
Hardwired Wall Switch
Use 24 gauge wire or larger for a maximum run of 100 feet
Ultrasonic Remote Control and Receiver
Receiver wire to combination control is rated at 350° F
Optimal remote operating distance 20 feet
(For best results use fully charged ALKALINE batteries in
ambient temperatures less than 125° F)