CV Series Gas Combination Controls
cv100
cv200
cv300
Applications
CV100
The CV100 is a compact combination control used for applications
with high capacity pilot lines such as large gas boilers and power
burners. The CV100 combines a single solenoid valve and a regulator.
Not having to purchase these components separately reduces both
material and labor costs.
CV200
The CV200 is a redundant combination control, having two solenoid
valves. It is used in direct spark or hot surface ignition applications
which eliminates having a standing or continuous burning pilot ame.
The CV200 is ideally suited for direct vent gas red baseboard
heaters, space heaters, wall furnaces, water heaters, gas replaces,
agricultural heaters, and commercial cooking appliances.
CV300
The CV300 is a redundant combination control similar to the CV200,
but an optional regulated or unregulated pilot is also available. A
regulated pilot can help eliminate expensive service calls in areas
of gas pressure uctuations. Using the CV300 helps to reduce the
cost of installation and eliminates the need to stock a separate pilot
regulator. Another advantage of the CV300 is its greater range of
regulation, up to 80,000 Btu/hr. Applications for the CV300 include
gas replaces, commercial cooking appliances, and patio heaters.
Direct Gas Fired Make-Up Air Unit
© 2011 Maxitrol Company, All Rights Reserved
Basic Operation
Operation
The CV100 combines an electrical shut-off valve with a pressure
regulator. The CV200 and CV300 combine two electrical shut-off
valves (redundant) with a pressure regulator.
Shut-off Valve
The shut-off valves are normally closed solenoid valves. When the
solenoids are energized, the valves open and gas ows from the
inlet through the upstream valve opening to the regulator. Gas
then passes through the downstream valve to the outlet and the
appliance.
Regulator Function
The CV100 regulator is located upstream of the shut-off valve.
The CV200 and CV300 regulator is located between the upstream
valve and the downstream valve and controls the outlet pressure.
There are three key functions in the regulator section of the valve.
A diaphragm senses changes in outlet pressure with reference to
atmospheric pressure. The spring provides a standard to which
the controlled pressure is referred, and a variable restrictor, or
poppet valve, moves in accordance with the diaphragm / spring
assembly to maintain a regulated outlet pressure.
Diaphragm Function
The gas ow stays on the side of the diaphragm opposite the
spring. The spring side of the diaphragm is open to the atmosphere
by a vent in the lid. Changes in inlet gas pressure or downstream
ow requirements (which could change outlet pressure) are
sensed by the diaphragm / spring assembly. This sensing action
causes movement of the variable restrictor (valve) such that outlet
pressure is kept constant.
Dimensions
Model Type “X” 100 / 200 300
Fixed 3.14” 3.48”
Adjustable 3.21” 3.54”
Convertible 3.46” 3.79”
3.75”
Boiler / Water Heater
4.06”
Note, dimensions are maximums and are to
be used only as an aid in designing clearance
for the regulator. Actual production
dimensions are as cast + 0.02 inch. Maxitrol
Company reserves the right to change
specications without notice.
‘X’
(see chart)
CV100 / CV200
‘X’
(see chart)
CV300
© 2011 Maxitrol Company, All Rights Reserved
CV100 CV200 CV300
Solenoid Shut-off Valve w/ Built-in Pressure Regulator single solenoid dual solenoid dual solenoid
CSA Certied X X X
UL Recognized X
Capacity at 1.0” w.c. Pressure Drop @ 42,000 Btu/hr NG @ 42,000 Btu/hr NG @ 75,000 Btu/hr NG
Range of Regulation 2,500 to 45,000 Btu/hr 2,500 to 45,000 Btu/hr
Operating Temperature Range -40º to 175ºF -40º to 175ºF
Rated Inlet Pressure 1/2 psi maximum 1/2 psi maximum 1/2 psi maximum
Inlet Connection (metric and/or standard)
(For other sizes consult Maxitrol Company)
Outlet Connection (metric and/or standard)
(For other sizes consult Maxitrol Company)
Right Side Inlet X X
Electronic Ignition - USED AS THE PILOT VALVE X
Electronic Ignition Systems - Direct Burner (No Pilot) X X
Electronic Ignition Systems - Intermittent Pilot X
12 VDC Coils X X X
24 VAC Coils X X X
110 VAC Coils X X
Natural, Manufactured, Mixed and Propane (LP) Gases,
and LP-Gas Air Mixtures
Screen on Inlet X X X
Outlet Pressure: 2.0” w.c. to 3.0” w.c. NG X X
Outlet Pressure: 3.0” w.c. to 4.0” w.c. NG X X X
Outlet Pressure: 3.0” w.c. to 5.0” w.c. NG X X
Outlet Pressure: 4.0” w.c. to 5.0” w.c. NG X X X
Outlet Pressure: 9.0” w.c. to 11.0” w.c. LP X X X
Convertible Outlet Pressure:
3.5” w.c. NG / 10.0” w.c. LP
Convertible Outlet Pressure:
5.0” w.c. NG / 10.0” w.c. LP
Screen on Outlet X X
Pressure Regulated Pilot Gas Outlet X
Electric Switch for Gas Shut-off X X
Mounting Bracket X X X
Side Mounting Bracket X
Options Spring Options General Technical Data
Conduit Connection
(110 VAC only with coil cong B only)
Outlet Pressure Adjustment
(adjustable, convertible, xed)
3/8” NPT
side inlet= 3/8” NPT
3/8” INV Flare
1/4” NPT
1/8” NPT
3/8” NPT
3/8” INV Flare
1/4” NPT
X X X
X X
X
X X X
3/8” NPT
side inlet= 3/8” NPT
3/8” INV Flare
1/4” NPT
1/8” NPT
3/8” NPT
3/8” INV Flare
1/4” NPT
10,000 to 80,000 Btu/hr
w/ pilot 500 Btu/hr
32º to 175ºF STD
-40º to 175ºF optional
3/8” NPT
1/2” NPT
3/8” NPT
1/2” NPT
1/2” INV Flare
X
P.O. Box 2230 Southeld, MI 48037-2230 USA 248.356.1400 www.maxitrol.com
© 2011 Maxitrol Company, All Rights Reserved
CV_CC_EN_11.2011
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