Install Instructions

ManualsBrandsMaxitrol ManualsHeating SuppliesAmplifier (250° to 650°F)

Remote Selector: Remote Selector:

Remote Selector: Cut hole in chosen panel location (TD94 -

3 5/8" x 3 5/8" / 92.1 x 92.1 mm, TD294 - 3 5/8" x 6 3/8" / 92.1 x

161.1 mm) - retract mounting brackets - insert selector into

panel cut out - turn mounting screws until controller is rigidly

mounted. Ambient temperature at selected location should be

between 15

and 140

F / -9

and 60

Amplifier: Amplifier:

Amplifier: Slide or snap out circuit board from amplifier base.

Mount base with two screws in chosen location protected from

weather or contaminated atmosphere. (Ambient temperature at

this location must be between -40

and 125

F / -40

and 52

Amplifier is ready for wiring when circuit board is replaced on

base - protective cover need not be removed.

Control wiresControl wires

Control wires

connecting the remote temperature selector to the amplifierconnecting the remote temperature selector to the amplifier

connecting the remote temperature selector to the amplifier

must not be run close to or inside conduit with power ormust not be run close to or inside conduit with power or

must not be run close to or inside conduit with power or

ignition wires. Doing so may cause the unit to functionignition wires. Doing so may cause the unit to function

ignition wires. Doing so may cause the unit to function

erratically or may destroy the amplifier.erratically or may destroy the amplifier.

erratically or may destroy the amplifier.

Power Supply: Power Supply:

Power Supply: Modulating power to terminals 1 and 2 should

be supplied by a 24V AC, 50/60 Hz, transformer. Modulating

current requirements: .8 amp maximum / 1.2 amp maximum for

"H" models.

Automatic control valves requiring more than a 24V AC 20 VA

transformer, are to use an independent power supply. The

amplifier relay has the capacity to handle required loads up to a

maximum of 10 amps. If exceeding 10 amps, an auxiliary relay

with contact rating sufficient to handle the automatic gas valve

will be necessary.

Optional Room Override Thermostat (T115):Optional Room Override Thermostat (T115):

Optional Room Override Thermostat (T115): For use with

TD94E-0409 single dial remote selectors only. Mount in heated

area out of direct path of discharge air stream. The T115

thermostat senses space temperature and should the

temperature drop below the T115 setting, the discharge air is

automatically reset to a higher temperature. This override

temperature is adjustable from 0° - 40° F above the TD94E

setpoint and is set with a dial located on the back of the TD94E.

When the T115 temperature setpoint is satisfied, the discharge

air temperature returns to the normal TD94E setting.

TS394 Temperature Sensor:TS394 Temperature Sensor:

TS394 Temperature Sensor: Locate where average (mean)

temperature can be sensed. Ensure that it is not touching side of

unit. (Sensor and wire are able to withstand 700

F / 371

ambient temperature.) If sensor location is beyond its 4 ft. / 1.22

m lead length from the controller, complete the connection using

18-22GA fiberglass insulated wire (see note below) or 18-22GA

standard copper wire.

NOTE:NOTE:

NOTE: Use fiberglass insulated wire if in direct contact with

heated air or surfaces. Avoid use of fiberglass insulated wire

beyond heated air or surface areas.

TS194 Temperature Sensor w/ Mixing Tube: TS194 Temperature Sensor w/ Mixing Tube:

TS194 Temperature Sensor w/ Mixing Tube: Sensor contained

within mixing tube assembly - installed in discharge airstream.

(Sensor is able to withstand 300

F / 149

C maximum

temperature.)

Modulator / Modulator-Regulator Valve: Modulator / Modulator-Regulator Valve:

Modulator / Modulator-Regulator Valve: Mount in upright

position in horizontal run of pipe, downstream of other controls.

Amplifier/Selector: Amplifier/Selector:

Amplifier/Selector: Install 1/4 DIN box in chosen location - cut

hole in panel (3 5/8" x 3 5/8" / 92.1 x 92.1 mm) - retract mounting

brackets - insert controller into panel cut out - turn mounting

screws until controller is rigidly mounted. Ambient temperature

at selected location should be between 15

and 125

F / -9

and

Power Supply:Power Supply:

Power Supply: Modulating power to terminals 7 and 8 should

be supplied by a 24V AC, 50/60 Hz, transformer. Modulating

current requirements: .8 amp maximum / 1.2 amp maximum for

"H" models.

Automatic control valves requiring more than a 24V AC 20 VA

transformer, are to use an independent power supply. The

amplifier relay has the capacity to handle required loads up to a

maximum of 10 amps. If exceeding 10 amps, an auxiliary relay

with contact rating sufficient to handle the automatic gas valve

will be necessary.

AmplifierAmplifier

Amplifier

/Selector/Selector

/Selector

AD1094 and AD1494

Override StatOverride Stat

Override Stat

T115

AmplifierAmplifier

Amplifier

A1094 and A1494

Temperature SensorTemperature Sensor

Temperature Sensor

TS394

Remote Temp. SelectorRemote Temp. Selector

Remote Temp. Selector

TD94E

Dual Temp. SelectorDual Temp. Selector

Dual Temp. Selector

TD294E

ValveValve

Valve

Temp. Sensor w/Mixing TubeTemp. Sensor w/Mixing Tube

Temp. Sensor w/Mixing Tube

TS194/MT1

Installation of Components

Remote System ItemsRemote System Items

Remote System Items

Self-contained System ItemsSelf-contained System Items

Self-contained System Items

Common ItemsCommon Items

Common Items