Honeywell T104F Thermostat User Manual

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T104F  
Thermostatic Control  
The T104F 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 T100A includes a setpoint dial  
andvalveactuator,connectedbyacapillarytubetoasensor.  
The T104F Control attaches to the valve body by threaded  
connections and may be mounted at any angle. Install the  
remote sensor beneath the heating coils in the cold air re-  
turn, or on a nearby wall where the air flow is not 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 thermo-  
static sensor is protected by a safety spring against tempera-  
tures to 125°F (52°C).  
2
M9730  
Specifications  
Fig. 1—T104F dimensions in in. (mm).  
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).  
MAX. OVERALL DIMENSIONS: 2-1/8 in. (54 mm) wide,  
2
1/8 (54)  
3
-5/16 in. (84 mm) long. See Fig. 1.  
3 5/16  
84)  
MAX.  
(
CAPILLARY LENGTH: 6 ft. 8 in. (2 m).  
TEMPERATURE SETTINGS:  
These are the setpoint temperatures, which correspond  
to the setpoint dial reference marks, under ideal conditions.  
Factors 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.  
M9731  
Temperature  
0
*
1
2
3
4
5
6
°
F
Off 43 46 54 61 68 73 79  
AVAILABLE VALVE BODIES:  
See Fig. 2.  
°
C
Off 12 16 20 23 26  
6
8
C. H.  12-94 • ©Honeywell Inc. 1994 • Form Number 62-3047  
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OTHER AVAILABLE T100 THERMOSTATIC  
CONTROLS (See Fig. 3):  
Fig. 2—V110 Valve Bodies.  
T104A Control with internal sensor.  
VALVE BODIES  
V110D  
T104B Control with remote sensor/setpoint.  
T104C Control with remote sensor and remote setpoint.  
T104V Control with internal sensor and tamper-resistant  
setpoint and mounting.  
ACCESSORY  
A104F1007 Limit Pins.  
G111B1053 Bulb guard for protection of sensor when  
mounted on the wall.  
V110E  
V110F  
M9735  
Fig. 3—T104A,B,C,V Thermostatic Controls.  
3
4
4
2
3
2
2
T104A  
T104B  
T104C  
T104V  
M9736  
Installation  
heating coils. Take care not to break, kink or sharply  
bend the capillary tubing.  
IMPORTANT: The T104F can be mounted inside an enclo-  
sureifthesensorislocatedaminimumof3in. (76mm)  
beneath the heating coils in the cold air return. Coil  
excess capillary tubing beneath and away from the  
When mounting the T104F, make sure the bosses on  
theT104Fbasefitsecurelyintothevalvebodygrooves.  
Firmlyhandtightentheknurledring. Impropermount-  
ing can cause overheating. Refer to Fig. 4 for typical  
installations.  
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Fig. 4—Typical installations.  
18 INCH  
MINIMUM  
M9734  
Settings and Calibration  
Setting the Limit  
To set a limit different from the factory setting, proceed  
as follows:  
1. Determine the desired temperature range limit or lock-  
ing temperature. Select the appropriate number on the ad-  
justment knob to match the desired temperature setting. See  
Fig. 5.  
The T104F Control includes an adjustable range limit-  
ing pin (order additional pins separately). The pin is fac-  
tory-set to limit the low range of the control to the frost  
protection (*) setting (see Fig. 5). The pin can be moved to  
a different low or high limit setting and lock point, or it can  
be removed. Use a second pin if both low and high limit  
settings are desired.  
Fig. 5—Temperature settings.  
ADJUSTMENT RANGE SETTING  
1
2
PIN REQUIRED.  
°
C
OFF  
OFF  
6
8
12  
54  
16  
61  
20  
68  
23  
73  
26  
79  
°
F
43  
46  
FACTORY SETTING.  
PIN  
POS.  
TEMP.  
RANGE RANGE  
°F  
TEMP.  
SCALE MARKING  
0
*
1
2
3
4
5
6
°C  
2
*
43 - 79  
6 - 26  
3
61 - 79  
16 - 26  
NONE  
OFF - 79 OFF - 26  
4
4
4
a
b
b
68  
20  
72  
22  
0 - 68  
43 - 68  
0 - 73  
43 - 73  
0 - 20  
6 - 20  
0 - 23  
6 - 23  
1
1
4b + *  
5
5 + *  
M9729  
3
62-3047  
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2. Lift the end cap off the adjustment knob. See Fig. 6.  
Locking the Control at a Single Temperature  
. Determine the desired locking temperature. Select the  
1
appropriate number on the adjustment knob to match the  
desired temperature setting. See Fig. 5.  
Fig. 6—Lift the end cap off the adjustment knob.  
2
. Lift the end cap off the adjustment knob. See Fig. 6.  
3. Remove the adjustment knob from the actuator as  
follows:  
3
. Remove the adjustment knob from the actuator as  
ADJUSTMENT  
KNOB  
END  
CAP  
a. Turn the adjustment knob so the desired knob setting  
is aligned with the white line on the actuator base.  
b. Pulltheknobofftheheadoruseascrewdriverinserted  
in one of the slots to pry off the knob. See Fig. 7.  
2
4
. Insert the pin in slot 4a for 68°F (20°C) or slot 4b for  
ACTUATOR  
M9715  
7
2 °F (22°C).  
Fig. 8—Insert the pin in the slot to set the limit  
range.  
follows:  
a. Turn the adjustment knob so the desired knob setting  
is aligned with the white line on the actuator base.  
b. Pulltheknobofftheheadoruseascrewdriverinserted  
into one of the slots to pry off the knob. See Fig. 7.  
LIMIT PIN  
WHITE LINE  
5
4b  
4a  
3
PIN  
POSITION  
*
Fig. 7—Remove the knob from the actuator.  
(SEE FIG. 5)  
FIXED STOP  
4
. Push the limit pin up and slide it into the slot that  
SCREWDRIVER SLOT (2)  
LIMIT PIN REMOVED  
M9723  
WHITE LINE  
CALIBRATION  
INDENT  
5. To replace the adjustment knob, align the knob setting  
from step 3a with the white line on the base and push the  
knob toward the base. Make sure the three arm clips snap in  
place at the top of the adjustment knob.  
RED  
BUTTON  
6. Replace the end cap.  
BASE  
ACTUATOR HEAD  
ARM CLIP (3)  
Recalibrate T104F Control  
1
. Lift the end cap off the adjustment knob. See Fig. 6.  
2. Pulltheknobofftheheadoruseascrewdriverinserted  
in one of the slots to pry off the knob. See Fig. 7.  
. Turn the actuator head clockwise until the head stops  
Fig. 7). The calibration indent should be aligned approxi-  
M9714  
3
(
mately with the white line on the base when the head stops.  
If the indent is 180 degrees from the white mark, unscrew the  
head completely from the base and rethread the head to the  
base so that it is aligned with the white mark. Turn the act-  
uatorheadclockwiseuntiltheheadstops. Completeremoval  
of the head from the base is required only if the actuator was  
previously dismantled.  
corresponds with the desired temperature limit. If the lower  
limit remains at the frost protection mark (*), insert an  
additional pin in the slot that corresponds with the second  
limit.  
Example 1:  
If the desired temperature range is 43° to 73°F (6° to  
2
3°C), leave the pin in the slot marked * and add one pin in  
NOTE:Thedistancebetweentheactuatorheadandthestatic  
portion of the control should be approximately 3/8 in.  
slot 5.  
(9 mm).  
Example 2:  
If the desired temperature range is OFF to 68°F (23 °C),  
4. Turn the actuator head counterclockwise approxi-  
matelyoneturnuntilthecalibrationindentontheheadaligns  
with the white line on the base. For the 72 °F (22°C) single  
temperature setting, align the indent with the center of the  
adjustable limiting pin.  
5. Replace the adjustment knob by aligning the red  
button with the white line on the base and pushing the knob  
toward the base. For the 72°F (22°C) single temperature  
setting, align the red button with the center of the adjustable  
limiting pin. Make sure the three arm clips snap in place at  
the top of the adjustment knob.  
move the pin to slot 5. No additional pin is required.  
5. To replace the adjustment knob, realign the knob  
setting in step 3a with the white line on the base and push the  
knobtowardthebase. Makesurethethreearmclipssnapinto  
place at the top of the adjustment knob. If the actuator was  
turned with the adjustment knob off, recalibrate the control  
according to the instructions in Recalibrate T104F Control  
section.  
6. Replace the end cap.  
6. Replace the end cap.  
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Troubleshooting  
Sympton  
Possible Cause  
Solution  
1. System is operating properly.  
All sections of 1. Many radiators are over-sized and all  
the radiator are  
not heating.  
sections are not required to heat up to  
maintain the set room temperature.  
Underheating. 1. Sensor is in the wrong location.  
1. Change the sensor location or change the control  
type. See installation instructions.  
2
3
. Excess capillary tube is coiled above or 2. Coil excess capillary tube below or away from the  
too near the heat source. heat source.  
. Flow through the valve is in the wrong 3. Check the arrow on the valve body. It should be in  
direction.  
the direction of the flow. Change the valve direction  
or flow direction.  
4
. Inadequate system temperature or  
pressure.  
4. Check the operating and limiting controls on the  
boiler. Check the circulating pump and isolating  
valves.  
5
6
. Steam traps are defective.  
. Air lock in the hot water system.  
5. Repair or replace the traps.  
6. Open the valve fully to allow air to pass. Install  
vents.  
7
. Scale or debris is blocking flow.  
7. Flush the system. Do not use oil base additives.  
Clean strainer insert in steam applications.  
8
. Heating cabinet dampers are closed.  
8. Open or remove the dampers.  
Overheating.  
1. Sensor is in the wrong location.  
1. Change the sensor location or change the control  
type.  
2
3
4
. Control is not properly installed.  
2. Set the bosses in the grooves and tighten the  
knurled ring to the valve body.  
3. Replace the control.  
. Capillary tube is broken, kinked, or  
bent sharply.  
. Dirt or scale is under the seat,  
preventing tight shutoff.  
4. Remove the control from the valve body, allowing  
the valve to open fully and flush away scale and  
debris. Reinstall the control and turn fully clock-  
wise. If the valve does not fully close, remove con-  
trol and cartridge using a cartridge changer tool or  
service socket (isolate valve from system if not  
using changer tool). Inspect and clean valve seat  
area and disc. Always use a strainer insert in steam  
applications.  
5
. Flow through the valve is in the wrong 5. Check the arrow on the valve body. It should be in  
direction, damaging the valve seat. the direction of the flow. Change the valve direction  
or flow direction. Remove the valve cartridge and  
inspect for damage to the seat disk.  
. Steam traps are defective.  
6
7
6. Repair or replace the traps.  
. Excessive differential pressure is  
forcing the valve open (hot water  
systems).  
7. Install a differential pressure regulator (D146A) to  
maintain less than 117 kPa (17 psi) differential  
between supply and return pipes.  
Chattering or  
knocking.  
1. Flow through the valve is in the wrong 1. Check the arrow on the valve body. It should be in  
direction. the direction of the flow. Change the valve direction  
or flow direction.  
2
. Vacuum in the system.  
2. For steam—check traps and vents. For hot water—  
check expansion tank operation and location.  
3
. Excessive differential pressure.  
3. Install a differential pressure regulator (D146A) to  
maintain less than 117 kPa (17 psi) differential  
between supply and return pipes.  
4
. Binding of piping.  
4. Make sure there is adequate space for piping.  
5
62-3047  
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Honeywell Braukmann  
Honeywell Braukmann  
Honeywell Limited—Honeywell Limitée  
740 Ellesmere Road  
Helping You Control Your World  
Honeywell Inc.  
1
985 Douglas Drive North  
Golden Valley, MN 55422  
Scarborough, Ontario  
M1P 2V9  
QUALITY IS KEY  
PrintedinGermany  
www.honeywell.ca/braukmann  

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