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© 2011 Maxitrol Company, All Rights Reserved
SPACE HEATING APPLICATIONS - Series 44 System
Series 44 Basic System Options
Valves Amplier Selectrastat
Discharge Temp.
Sensor
Space Temperature
Selector
Space Temperature
Sensor
M411, M511, M611,
MR212D, E, G, or J
(see pg. 4)
A1044, A1044U T244 TS144 / MT1 or 2 TD244 TS244
SYSTEM COMPONENTS
Ampliers
A1044U
A1044 Amplier
A1044U (replaces all A1044L1, suitable
replacement for A1044 [C,D,E,H]) (includes
0, 10, or 20 second low re start capability.)
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 80°F / max. 160º to 210°F)
A1044H (min. 40º to 80°F / max. 100º to 160°F)
NOTE: Amplier and Discharge Tempera-
ture Sensor must have same temperature
range to be compatible.
Discharge Temperature Sensors: use with Mixing Tube
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 80°F / max. 100° to 160°F)
Sensors compatible with A1044UF:
TS144F (min. 40° to 80°F / max. 60° to 95°F)
Sensors compatible with A1044UG:
TS144G (min. 40° to 80°F / max. 160° to 210°F)
Mixing Tubes: used with sensors
Lengths:
MT1-9 or 2-9..........................................9”
MT1-12 or 2-12.....................................12”
MT1-23 or 2-23.....................................23”
MT1-28 or 2-28.....................................28”
MT1-57..................................................57”
Valves
Pipe Sizes:
M411.......................................3/8” & 1/2”
M511.....................................1/2” & 3/4”
M611......................................3/4” & 1”
MR212D.......................1”, 1-1/4”, 1-1/2”
MR212E................................1-1/2” & 2”
MR212G................................2-1/2” & 3”
MR212J...................................4” Flanged
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. (See Bulletin
MMR_MT_EN).
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)
Space Temperature Sensor
TS244 (55° to 90°F)
TS244A (40° to 80°F)
NOTE: Space Temperature Selector
and Space Temperature Sensor
must have same temperature range
to be compatible.
NOTE: Selector and sensor must have the same temperature range to be compatible.