Table of Contents
Advertisement
The T-4516 is also a dual
temperature, dual dial thermostat
for individual day and night
control or weekend setback.
Functionally it is similar to the
T-4506; however, it features an
additional output air terminal
which can be used as an on-off
switchline pressure. The manual
indexing switch is standard on
this thermostat. Depressing the
switch exhausts the switchline
pressure and restores day
operation of the individual
thermostat without affecting other
system thermostats. The switch
can be unlatched manually or will
automatically reset with the day
cycle.
The T-4756 is a dual temperature,
dual dial heating-cooling
thermostat which accomplishes
mode switchover between direct
and reverse actions, with a change
in supply pressure from 15 to
20 PSIG (105 to 140 kPa). An
energy conservation model is
available with factory stops to limit
the set points to 75 F (24 C)
maximum for heating and 75 F
minimum for cooling. This model
is furnished with WARM and COOL
dials.
Low Volume Output
Thermostats
The low volume output
thermostats employ a ball type,
force balance control port to
provide proportional feedback and
stable control. These thermostats
are electrically non-conductive
and allow test probe access
without removal of the cover.
Attractive low profile
2 T-4000 Product Bulletin
covers are included with these
thermostats.
Model Descriptions
The T-4100 is a single
temperature thermostat. The unit
features exposed or concealed
set point adjustment and a
standard Fahrenheit and Celsius
thermometer. With the use of a
remote restrictor, this instrument
requires only one air connection.
The T-4110 is a single temperature
thermostat designed specifically for
mounting in ceiling terminal units.
This thermostat may be located
within a room air sampling
chamber, return air grille, or is
available with an optional
protective cover which incorporates
an aspirator feature to be powered
by the duct air pressure when
mounted in a diffuser. Available in
direct or reverse models, the unit
features a long flexible plastic
lever, connected to its set point
adjuster, which extends through the
ceiling or diffuser allowing
adjustment from inside a room.
The T-4600 is an energy manager
heating-cooling thermostat which
features two outputs and
individually adjustable
sensitivities and set points for
heating and cooling. Available in
dual direct, dual reverse, or direct
and reverse action models, the
independent set points can result
in a deadband to encourage
energy conservation and prevent
energy waste by eliminating
heating and cooling overlap
(see Fig. 2).
Note: All dual temperature
thermostats come equipped with
element identification labels
indicating the function of the
element.
Installation
Thermostat installation
procedures vary between the
high volume output and low
volume output units. Various
accessories are available (see
Table 1) to facilitate mounting
room thermostats on virtually
any wall surface. For a
complete list of accessory
repair parts, refer to Installation
Data T-4000-A.8.
All thermostats can be mounted
horizontally or vertically; air
connections are made with 5/32 in.
O.D. polytubing to barbed fittings
furnished on the units. Only high
volume output thermostats that do
not have manual indexing switches
can be concealed mounted with the
use of an aspirator wallbox and
flush wallplate. Other accessories
can be used for ceiling suspended
mounting. Several kits are also
available for converting existing
thermostats. For complete
mounting instructions, refer to
Installation Data T-4000-A.
Adjustment
The procedure for set point and
sensitivity adjustment depends on
the type of thermostat and method
of mounting. For detailed adjusting
instructions, refer to Adjustment
Data T-4000-B.
Hide quick links:
Advertisement
Table of Contents
