Schneider Electric TK-1801, TK-1811, TKR-1811 Catalog Page
APPLICATION
For proportional control of pneumatically-operated
sequenced heating and cooling valves and/or damper
actuators to maintain room air temperature with a zero
energy band between heating and cooling in heating,
ventilating and air conditioning systems.
SPECIFICATIONS
Thermostat: Proportional two pipe type. Thermostat
maintains constant branch pressure when temperature is
between dial setpoints.
Sensing Elements: Two bimetals.
Control Dial Range: Two independent with stops, see
able 1.
T
Th
rottling Range: Adjustable 2 to 10 °F/10 psi change in
branch pressure when temperature is not between dial
setpoints, factory set at 4 °F/10 psi.
Output Air Signal: 0.5 psig (3.4 kPa) to supply air pressure
-0.5 psig (-3.4 kPa).
ro Energy Band Pressure: Adjustable 5 to 11 psig (34 to
Ze
.
.
sig (55 kPa).
Compressor
x 64 mm).
:
76 kPa) factory set at 8 p
Action: See Table 1.
Ambient Limits:
Shipping, -40 to 150 °F (-40 to 65 °C). 0 to 98% R.H.,
non-condensing
Operating, 20 to 115 °F (-7 to 46 °C). 10 to 98% R.H.,
non-condensing
Supply Air Pressure: Clean, oil free, dry air required
(reference EN-123).
Nominal, 20 psig (138 kPa).
Minimum, 15 psig (103 kPa).
Maximum, 30 psig (207 kPa).
Air Connections:
Main (Black), 5/32" dia. spring reinforced plastic tube.
Branch (white), 5/32" dia. spring reinforced plastic tube.
Air Consumption for Sizing Air
TK-18x1, TKR-18x1, 0.012 scfm (5.7 ml/s).
TK-18x1-600 (Aspirated models), 0.028 scfm (13.2
ml/s).
Air Capacity for Sizing Air Mains:
TK-18x1, TKR-18x1, 16 scim (4.4 ml/s).
TK-18x1-600, 56 scim (15.3 ml/s).
Cover: Beige plastic with brushed bronze metal insert as
andard exce
st
brushed stainless steel covers.
Mounting: Upright position on wall.
Dimensions:
TK-18x1, TKR-18x1, 4-3/8" high x 2-3/4" wide x 1-5/8"
dee
TK18x1-600, Wall box — 5" high x 3-1/2" wide x 2-1/2"
deep (127 mm x 89 mm
Cover — 5-1/2" high x 4" wide (140 mm x 102 mm).
pt aspirated models. Aspirated models have
p (111
mm x 70 mm x 43 mm).
TK-1801, TK-1811
TK-1801, TKR-1811
Pneumatic Zero Energy Band
Room Thermostats
General Instructions
Figure-1
Table-1 SPECIFICATIONS.
55 to 85
TK-1801
TKR-1801
TK-1811
TKR-1811
Part Number
Dial Range**
°F 13 to 29 °C
TK-1801-116
TK-1811-116
Application
N.O. Heat
N.C. Cool
N.C. Heat
N.O. Cool
*Direct Acting (D.A.) - Increase output pressure on
temperature rise.
Reverse
temperature rise.
**Control di
built-in dial stops can limit high and/or low setting of each dial.
Acting (R.A.) - Decrease output pressure on
Control
Action*
Direct
Reverse
al marked °F on one side and °C on the other side;
Printed in U.S.A. 6-10 © Copyright 2010 Schneider Electric All Rights Reserved. F-20007-6
Table-2 TKR-18X1 INCLUDES:
Quantity Description
1 TK-18X1 thermostat
1 Blank cover insert
1 Cover insert with setpoint cutout
2 1/4" x 5/32" barbed fitting
2 5/32" x 5/32" barbed fitting
2 1/4" O.D. x 2" Tygon tubing
2 1/4" x 1/4" compression to tubing fitting
1 5/64" Allen head cover screw
1 5/64" Allen head wrench
ACCESSORIES
AT-65 Series Cover inserts
AT-85 Series Digital thermometer cover kit, plastic cover
AT-95 Series Digital thermometer cover kit, metal cover
AT-504 Plaster hole cover
AT-505 Surface mounting base
AT-506 Pneumatic wall box fitting
AT-509 Wall box required for aspirated thermostats
AT-536 Pneumatic wall thermostat conversion kit
AT-546 Auxiliary mounting base
AT-1100 Series Thermostat guards
AT-533-101 Adapter 1/4" plastic to 5/32" plastic
AT-533-127 Adapter 3/16" copper or 1/4" copper with 1/4"
PKG-1093 Digital thermometer battery replacement kit
TOOL-15 Spanner head driver
TOOL-80-1 Changeover/dial
TOOL-95-1 Pneumatic calibration tool kit
coupling (not included)
solder
to 5/32" plastic
PRE-INSTALLATION
The thermostats are shipped with mounting screws. Wall
fittings must be ordered separately.
Before installation, make a visual inspection of the thermostat
carton for obvious signs of damage.
Air Connections:
Two plastic tubes reinforced with a coil spring are coded M
and B. The M (black) designates the supply main and the B
(white) designates the controlled branch line. See Figure 1.
Figure-2
Options (For quantities of 24 or more of same part
number)
Add “dash number” (-XXX) s
uffix to base part number for
desired option. For metal covers, spcify TK2-18X1-XXX.
Figure-3 Typical Mounting Thermostat to AT-506 Wall Box
Fitting.
INSTALLATION
Requirements
Locate the thermostat where it will be exposed to unrestricted
circulation of air which represents the average temperature of
the controlled space. Do not locate the thermostat near
sources of heat or cold such as lamps, motors, sunlight, or
concealed ducts or pipes.
The thermostat fitting is available for either flush or surface
mounting. See Fig
for surface mounting on all wall surfaces and flush mounting
on plastered or stud walls.
ures 3 and 4. Use the AT-506 wall box fitting
2 © Copyright 2010 Schneider Electric All Rights Reserved. F-20007-6
Procedure
To mount a thermostat on an AT-506 wall box fitting, refer to
Figure 3.
1. Remove and discard the cardboard cover plate on the wall
box. (The cardboard cover protects the fitting while the wal
is being plastered.)
2. Fasten the mounting plate to the wall box with the two flat
headscrews provided. Make sure it is square with the wall
before tightening the screws.
3. f the thermostat tubing is too long for easy coiling in the
l box, it can be cut to length. Cut the tubing at a 45o
wal
angle for ease of inserting the tubing into the “O” ring
seal. Be sure that the coil spring is cut flush with the
tubing.
4. Remove and discard the short piece of tubing from the
connector head of the
5. Insert the main (black) plastic tubing into the left-hand
hole in the connector head. Insert the branch line (white)
tubing into the right-hand hole in the connector.
Insert tubes at least 1/4". Do not use any lubricant on the
plastic tubing.
6. Fasten the thermostat to the mounting plate with the three
Allen mounting screws provided. Tighten the screws
evenly.
wall box.
Figure-5
For installation of external setpoint, refer
to figure 6
1. Insert the knob through hole in cover. The knob should rest
on the calibration screw with the slots aligned with the dial
clamp screws.
2. Insert screw supplied with the knob into the center of the
knob and tighten, being careful not to disturb the setting
of the calibration screw.
To mount a thermostat on an electrical switch box, refer
to Figure 4
1. Attach the mounting plate to the switch box with the two
flathead screws provided. Be sure the mounting plate is
vertical.
2. Slightly rotate the tubes back and forth, and push firmly
onto the fittings. (See Figure 5)
Fasten the thermostat to the mounting plate with the Allen
3.
head screws provided and tighten evenly.
Figure-4 Typical Mounting Thermostat to Electric Box.
Note: The knob must be removed in order to remove
thermostat cover or recalibrate thermostat.
Figure-6
F-20007-6 © Copyright 2010 Schneider Electric All Rights Reserved. 3
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