Electronic Modulation Gas-Fired Temperature Controls/ Direct Fired Applications
Selectra® systems from Maxitrol maintain precise, stable
gas-red temperatures. Selectra’s unique electronic Modulator or Modulator-Regulator valves control gas ow with instantaneous response and continual adjustment. They are
the superior alternative to mod motors and buttery valves.
OEM or retrot applications include environmental climate
control, as well as industrial or commercial heating processes. Standard temperature adjustment range 55º to 90º F. All
fuel gases are compatible - capacities to 30,000,000 Btu/h.
Available standard companion electronics include temperature selectors, ampliers, and temperature sensors, in a variety of congurations. The amplier supplies output voltage
to the M/MR valve.
MAKE UP AIR APPLICATIONS
Series 14 System
Selectra® Series 14 systems are designed primarily for
make-up air heating, as components of direct red equipment.
SPACE HEATING APPLICATIONS
Series 44 System
Selectra® Series 44 systems are designed primarily for
space heating, as components of direct red equipment.
A wall mounted Selectrastat® senses space temperature
and has an integral selector with either a 55º to 90º F or
40º to 80º F range. A discharge air temperature sensor
(and mixing tube) is a means of limiting the minimum and
maximum discharge air temperature.
Ampliers are available with low-re start duration feature.
Option:
Instead of a Selectrastat, a separate remote tempera-
•
ture sensor and selector can be substituted.
A discharge air temperature sensor is mounted within a mixing tube housing.
Ampliers are available with low-re start duration, and integral or remote temperature selection.
Options:
A room override thermostat provides space tempera-
•
ture control by raising the discharge air temperature to
a preselected point - when used in conjunction with the
remote temperature selector.
An inlet air sensor (and mixing tube) provides inverse
•
change in discharge air for each degree change in inlet air - when installed in a convenient duct location upstream of the burner.
A dual temperature selector replaces TD114 to provide
•
dual control for door heaters, or other applications such
as paint spray booths.
Note: Selector and sensor must have the same temperature range to be compatible.
Amplier or
Amplier-Selector
A1014, A1014U
AD1014USingle Integral__TS114/ MT1 or 2__TS10765
AD1214Dual Integral__TS214/ MT1 or 2____
Selection
Method
Single RemoteTD114TS114/ MT1 or 2T115TS10765
Dual Remote
Remote Selector Model
(if applicable)
TD114HDTS114/ MT1 or 2
TD214TS214/ MT1 or 2
SYSTEM COMPONENTS
SensorOverride Stat
____
Inlet Air
Sensor
Ampliers (A1014 shown)
A1014 (all temperature ranges)
A1014U (replaces A1014L1, suitable
replacement for A1014)(all temperature
ranges - includes 10 or 20 second low re
start capability)
Amplier-Selectors (with integral temperature dial)
AD1014U (shown) (replaces AD1014
and AD1014L1)(all temperature ranges
- includes 10 or 20 second low re start
capability)
Dual Temperature Amplier-Selectors: (AD1214 shown)
AD1214__ (integral dual selector - any
comb. of 2 standard ranges avail.)
Example1 - AD1214BC (120° to 170° F
and 160° to 210° F, use w/TS214BC
Example2 - AD1214AD (80° to 130° F
and 200° to 250° F, use w/TS214AD
Remote Temperature Selectors:
TD114 (55° to 90° F w/override 0° to 40°
over set point)
TD114A (80° to 130° F)
TD114A-1 (80° to 130° F w/ override 0° to
40° F over set point)
TD114B (120 to 170° F)
TD114C (160° to 210° F)
TD114D (200° to 250° F)
TD114E (100° to 250° F)
TD114F (40° to 80° F w/override 0° to 40° over set point)
TD114G (90° to 140° F)
TD114-1 (55° to 90° F w/120° to 170° F override) * use w/TS114
TD114-2 (55° to 90° F w/two outputs)
TD114G-2 (90° to 140° F w/two outputs)
NOTE: Remote Selector and Discharge Temperature Sensor must have
same temperature range to be compatible.
Optional: ETD-1 enclosure, EFP-1 cover plate only - no enclosure
Discharge Air Temperature Sensors: use with Mixing Tube
TS114 (55° to 90° F)
TS114A (80° to 130° F)
TS114B (120° to 170° F)
TS114C (160° to 210° F)
TS114D (200° to 250° F)
TS114E (100° to 250° F)
TS114F (40° to 80° F)
TS114G (90° to 140° F)
TS114J (110° to 160° F) To be used w/ AD1014-1116
TS214__ (dual sensor - any combination of 2 standard ranges available)
Example 1 - TS214G (55° to 90° F and 90° to 140° F, use w/TD114 &
TD114G, or TD214G [selector w/switch], or AD1214G)
Example 2- TS214AD (80° to 130° F and 200° to 250° F, use w/TD114A &
TD114D, or TD214AD [selector w/ switch], or AD1214AD)
Mixing Tubes: (and sensor)
MT1-9 or 2-9 (9” length)
MT1-12 or 2-12 (12” length)
MT1-23 or 2-23 (23” length)
MT1-28 or 2-28 (28” length)
MT1-57 (57” length)
Valves:
M411 (3/8” & 1/2” pipe size)
M511 (1/2” & 3/4” pipe size)
M611 (3/4” & 1” pipe size)
MR212D (1”, 1-1/4”, 1-1/2” pipe size)
MR212E (1-1/2” & 2” pipe size)
MR212G (2-1/2” & 3” pipe size)
MR212J (4” anged)
MR212-2D, E, G, J (used for
2-speed blower or dual fuel
operation)
NOTE: M (Modulator) valve
requires a pressure regulator for
high re setting. MR (Modulator-Regulator) valve requires no
pressure regulator up to 5 psi.
OPTIONAL SYSTEM COMPONENTS:
Dual Temperature Selector:
DOOR HEATERS -TD114HD use w/TS114 (door closed 55° to 90°
F/open 90° to 140° F)
PAINT SPRAY BOOTHS OR OTHER DUAL APPLICATIONSTD214__ (dual selector w/switch - any comb. of 2 standard ranges avail.)
Example 1- TD214G (55° to 90° F [spray] and 90° to 140° F [dry], use w/TS214G
Example 2 - TD214AD (80° to 130° F and 200° to 250° F, use w/TS214AD
TD214__X (same as TD214__, less enclosure)
Inlet Air Temperature Sensors: use with Mixing Tube
Note: Selector and sensor must have same temperature range to be compatible.
A1044, A1044UT244TS144 / MT1 or 2TD244TS244
SYSTEM COMPONENTS
Sensor
Space Temperature
Selector
Space Temperature
Sensor
Ampliers
A1044U (replaces all A1044L1, suitable replacement for A1044 [C,D,E,H]) (includes 0,
10, or 20 second low re start capability.)
A1044U
A1044 Amplier
A1044L Amplier
Discharge Temperature Sensors: use with Mixing Tube
Mixing Tubes: used with sensors
A1044UF (replacement for A1044FL1)
A1044UG (replacement for A1044G[L1])
A1044 (min. 40° to 80° F/ max. 80° to 140° F)
A1044C (min. 20° to 60° F/ max. 80° to 140° F)
A1044D (min. 20° to 60° F/ max. 35° to 75° F)
A1044E (min. 20° to 60° F/ max. 60° to 120° F)
A1044G (min. 40º to 80º F / max. 160º to 210º F)
A1044H (min. 40º to 80º F / max. 100º to 160º F)
NOTE: Amplier and Discharge Temperature Sensor must have same temperature
range to be compatible.
Sensors compatible with A1044U:
TS144 (min. 40° to 80° F/max. 80° to 140° F)
TS144C (min. 20° to 60° F/max. 80° to 140° F)
TS144D (min. 20° to 60° F/max. 35° to 75° F)
TS144E (min. 20° to 60° F/max. 60° to 120° F)
TS144H (min. 40º to 80º F / max. 100º to 160º F)
Sensors compatible with A1044UF:
TS144F (min. 40º to 80º F / max. 60º to 95º F)
Sensors compatible with A1044UG:
TS144G (min. 40º to 80º F / max. 160º to 210º F)
MT1-9 or MT2-9 (9” length)
MT1-12 or MT2-12 (12” length)
MT1-23 or MT2-23 (23” length)
MT1-28 or MT2-28 (28” length)
MT1-57 (57” length)
NOTE: M (Modulator) valve requires an
upstream pressure regulator for low re &
high re settings. MR (Modulator/Regulator) valve requires no upstream pressure
regulator up to 5 psi inlet.
Selectrastat (Senses and Selects)
T244 (55° to 90° F)
T244A (40° to 80° F)
or optional pair to replace
Selectrastat
Space Temperature Selector
TD244 (wall mount 55° to 90° F)
TD244A (wall mount 40° to 80° F)
TD244P (panel mount 55° to 90° F)
TD244AP (panel mount 40° to 80° F)