Install Instructions

1 62-3046
C.H. • 12-94 • ©Honeywell Inc. 1994 • Form Number 62-3046
T104A
Thermostatic Control
The T104A Thermostatic Control is used with a V110
Valve Body to control radiators, convectors, baseboard
heating units, or other heating units with standard capacity
requirements. The control is self-powered and requires no
electrical connection. The T104A includes an integral sen-
sor, setpoint dial and valve actuator. The T104A Control
attaches to the valve body by threaded connections. The
T104A must be mounted horizontally for accurate tempera-
ture regulation. It is not suitable for use inside enclosures or
where the airflow around the sensor is restricted.
The setpoint dial has reference marks (1-6). The control
has a low limit of 43
°
F (6
°
C) when the dial is turned fully
clockwise to the frost protection mark*. The red button
indicates the 68
°
F (20
°
C) setpoint limit. Higher settings
may be made by holding in the button while turning. The
thermostatic sensor is protected by a safety spring against
temperatures to 125
°
F (52
°
C).
Specifications
MATERIALS OF CONSTRUCTION:
Body: Industrial grade plastics with low thermal
conductivity.
Fastening Ring: Plated brass.
Internal Parts: Brass thermostat capsule, other metals.
TEMPERATURE RANGE: 43° to 79°F (6° to 26°C).
MAX. SENSOR TEMPERATURE: 125°F (52°C).
MAXIMUM OVERALL DIMENSIONS: 2-1/8 in. (54 mm)
wide, 3-5/16 in. (84 mm) long. See Fig.1.
Fig. 1—T104A dimensions in in. (mm).
3 5/16 (84) MAX.
2 1/8
(54)
M9708
TEMPERATURE SETTINGS:
These are the setpoint temperatures, which correspond to
the setpoint dial reference marks, under ideal conditions.
Factor affecting the temperature at the sensor vary for each
installation. It may be necessary to adjust the setpoint higher
or lower to obtain the desired space temperature.
Temperature 0 *123456
°F Off 43 46 54 61 68 73 79
°C Off 6 8 12 16 20 23 26
AVAILABLE VALVE BODIES: See Fig.2.
Fig. 2—V110 Valve Bodies.
OTHER AVAILABLE T104 THERMOSTATIC CON-
TROLS (See Fig.3):
T104B Control with remote sensor/setpoint.
T104C Control with remote sensor and remote setpoint.
T104F Control with remote sensor.
T104V Control with internal sensor and tamper-resistant
setpoint and mounting.
ACCESSORY: A104F1007 Limit Pins.
M9711
V110D
VALVE BODIES
V110E
a
V110F
a
V110E VALVE BODY
IS USED ONLY WITH
T104A CONTROL THAT IS
MOUNTED HORIZONTALLY.
2
3
M9713

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