Johnson Controls T500HCP-1 User manual

FANs 216, 1628.3
Product/Technical Bulletin T500
Issue Date 0899
© 1999 Johnson Controls, Inc. 1
Part No. 24-8347-35, Rev. E www.johnsoncontrols.com
Code No. LIT-216173
T500 Series Thermostats provide an economical
control solution for single-stage, multi-stage, or heat
pump systems. Up to four event setpoints can be
selected, as well as heat, cool, automatic changeover,
and off modes.
Thermostats are available in the following types:
T500HCP-1 (1 heat/1 cool), T500HPP-1 (heat pump,
3 heat/2 cool), T500HPP-2 (heat pump, 1 heat/1 cool),
T500MSP-1 (2 heat/2 cool). Each thermostat is
packaged with the necessary mounting hardware, and
installation is simple and fast for reduced cost.
Figure 1: T500 Series Programmable Thermostats
Features and Benefits
!
!!
!Low-Profile Design Complements any decor
!
!!
!No Batteries Required Retains scheduled events and temperatures
upon loss of power
!
!!
!Lockable Access Cover and
Keypad Lockout
Prevents unauthorized changes
!
!!
!Full Function Liquid Crystal
Display (LCD)
Makes controls easy to read, easy to use
!
!!
!Remote Sensor Terminals Allows the T500 thermostat to be mounted up
to 300 m (1,000 ft) away from the controlled
space using a SEN-500-1 (sold separately)
!
!!
!Auxiliary Output Energizes for auxiliary equipment operation
!
!!
!Fuzzy Logic Control Optimizes control performance
!
!!
!Smart Fan Option Provides continous fan operation in the
occupied mode and intermittent operation at
night
T500 Series Programmable Thermostats

2T500 Series Programmable Thermostats Product/Technical Bulletin
Introduction
The T500 thermostats use an adaptive control routine,
based on fuzzy logic, to determine the heating or
cooling load of the controlled space. The routine
calculates load by evaluating recent room conditions
and room reactions to heating and cooling. This load is
used to determine the cycle rate of the equipment,
giving optimal control of the space.
Supplies Needed
•drill
•4.7 mm (3/16 in.) drill bit
•3 mm (1/8 in.) flat-blade screwdriver
•hammer
•marking pencil
•wire stripper
T500MSP-1
T500HPP-1
T500HCP-1
T500HPP-2
Dimn
114.3
(4-1/2)
127
(5)
101.6
(4)
22.2
(7/8)
Figure 2: T500 Dimensions, mm (in.)
Location Considerations
Locate T500 thermostat as follows:
•on a partitioning interior wall, and approximately
1.5 m (5 ft) above the floor in a location of average
temperature
•away from direct sunlight or radiant heat, outside
walls or behind doors, air discharge grills,
stairwells, or outside doors
•away from steam or water pipes, warm air stacks,
unheated/uncooled areas, or sources of electrical
interference
!
CAUTION: Shock Hazard.
Disconnect power supply before
wiring connections are made to
prevent electrical shock or
possible damage to the
equipment.
Installation and Wiring
Note: When replacing an existing thermostat,
remove and use wire tags to identify terminal
designations.
To install and wire the thermostat:
1. Lift the thermostat cover and insert a small coin
into the slot located in the bottom center of the
thermostat case and twist 1/4 turn. (See Figure 3.)
Grasp the base from the bottom two corners and
separate from the thermostat.
2. Swing the thermostat out from the bottom, and lift
up and out of the base. Place the rectangular
opening in the base over the equipment control
wires protruding from the wall and, using the base
as a template, mark the location of the two
mounting holes. No leveling is required.
3. Use the supplied anchors and screws for mounting
on drywall or plaster. Drill two 4.7 mm (3/16 in.)
holes at the marked locations, tap nylon anchors
flush to wall surface, and fasten. (See Figure 4.)
4. Connect the wires from the existing system to the
thermostat terminals according to wiring
designations in Table 2, Table 3, Table 4, or
Table 5. Push extra wire back into the wall. Wires
must be flush to the plastic base. Plug hole with a
fireproof material to prevent drafts from affecting
ambient temperature readings.

T500 Series Programmable Thermostats Product/Technical Bulletin 3
!
CAUTION: Equipment Damage Hazard.
Before applying power, make all
wiring connections and check
the connections. Short-circuited
or improperly connected wires
may result in permanent
damage to the unit.
Figure 3: Separating the T500 from the Base
Figure 4: Mounting the Base

4T500 Series Programmable Thermostats Product/Technical Bulletin
Installing the Thermostat Cover Lock
If desired, insert the plastic lock piece into the bottom
of the mounted base. The ends of the lock piece
should fit snugly under the lock pins extending from the
bottom of the mounted base. The tab in the middle of
the lock piece should extend downward from the
mounted base. (See Figure 5.)
To release the locking mechanism, press the lock
piece up and into the base while gently prying open the
thermostat at the same time. Use caution to avoid
cracking the thermostat base or cover.
Thermostat
Base
Plastic Lock Pin
Snap
plastic lock
into place.
Figure 5: Installing the Thermostat Lock
Reattaching the Thermostat and Cover
to the Installed Base
1. Position the thermostat inside the cover, and
attach on the hinged tabs located at the top of the
base.
2. Swing the thermostat and cover down, and press
on the bottom center edge until they snap in place.
(See Figure 6.)
Hinged
Ta b s
Figure 6: Installing the T500 Thermostat

T500 Series Programmable Thermostats Product/Technical Bulletin 5
DIP Switch Selections
!
CAUTION: Equipment Damage Hazard.
Before selecting a minimum
on/off time, ensure the
equipment can tolerate the
following maximum hourly
cycle rates: 7.5 cycles per hour
when using 4-minute on/off, or
15 cycles per hour when using
2-minute on/off.
Table 1: DIP Switch Selections
DIP Switch Switch
Selection
Description
1On Allows 2-event (day, night) programming.
Off Allows 4-event (morning, day, evening, night) programming.
2
(Smart Fan)
On During the morning, day, and evening events, the fan automatically cycles with the
equipment or runs continuously if the Fan button is pressed. To run continuously, the
Fan button need only be pressed once during the morning, day, or evening event
after programming the thermostat. Smart Fan remembers that the fan should run
continuously during these events after that.
During the night event, the fan automatically cycles with the equipment by default.
Pressing the Fan button during the night event overrides and causes the fan to run
continuously for that night only.
At the end of the night event, Smart Fan remembers the fan selection (automatic
cycling or continuous fan) for the morning, day, and evening events and reverts back.
Off Allows the fan to cycle with equipment or run continuously if the Fan button is
pressed, regardless of the event. Changing between events does not affect the fan.
3On Allows 2-minute minimum on/off time for heating and cooling equipment.
Off Allows 4-minute minimum on/off time for heating and cooling equipment.
4On Locks the keyboard, disabling buttons to prevent tampering. (Only the Outdoor and
∨
∨∨
∨and ∧
∧∧
∧buttons will function. See Programming the Thermostat, Making
Programming Changes While the Keyboard is Locked, and Temporary [1 Hour]
[Keyboard Locked] in this bulletin.)
Off Unlocks the keyboard.
5On T500HCP-1, T500HPP-2, T500MSP-1 only: Allows the fan to delay with the plenum
switch.
T500HPP-1 only: Compressor/Auxiliary Interlocked: Turns off the compressor when
the auxiliary heat is on. The compressor will remain off for 2 minutes after the
auxiliary heat is turned off to ensure that the heat pump coil has cooled.
Off T500HCP-1, T500HPP-2, T500MSP-1 only: Allows fan to operate immediately with a
call for heat.
T500HPP-1 only: Compressor/Auxiliary Normal: Allows the compressor and auxiliary
heat to be on simultaneously.
Continued on next page . . .

6T500 Series Programmable Thermostats Product/Technical Bulletin
DIP Switch
(Cont.)
Switch
Selection
Description
6On T500HPP-1, T500MSP-1 only: Allows multi-stage heating or cooling.
Off T500HPP-1, T500MSP-1 only: Allows single-stage heating or cooling.
7LED 1 icon
off/on
(See Table 5.)
T500HPP-1, T500MSP-1 only: Optional selection: LCD icon comes on with LED 1.
8LED 2 icon
off/on
(See Table 5.)
T500HPP-1, T500MSP-1 only: Optional selection: LCD icon comes on with LED 2.
4 Events Per Day
Smart Fan Disabled
Heat/Cool: 4 Minute
(Minimum On)
Keyboard Unlocked
ON
1
3
2
45
2 Events Per Day
Smart Fan Enabled
Heat/Cool: 2 Minute
(Minimum On)
Keyboard Locked
Fan Immediate
with Heat Call
Fan On with
Plenum Switch
Figure 7: T500HCP-1 Factory-Set DIP Switch
Settings (All Off)
RS2
RS1
W1
Y1
G
R
24V
24V(c)
Heating
Cooling
Fan
Common
Hcp-1wire
RS+V
Figure 8: T500HCP-1 Wiring Terminals
Table 2: T500HCP-1 Output Terminal
Designations
Terminal Function
W1 Energizes on call for heating
Y1 Energizes on call for cooling
GEnergizes fan on call for heating or
cooling or by pressing Fan button
RIndependent switching voltage
24V 24 VAC from equipment transformer
24V(c) 24 VAC (common) from equipment
transformer
RS2
RS1
RS+V
Connections for outdoor air
temperature or indoor remote
sensors; refer to instructions included
with sensors.

T500 Series Programmable Thermostats Product/Technical Bulletin 7
Compressor/Auxiliary
Normal
Single Stage
LED 1 Icon Off
LED 2 Icon Off
4 Events Per Day
Smart Fan Disabled
Heat/Cool: 4 Minute
(Minimum On)
Keyboard Unlocked
ON
1
3
2
456
2 Events Per Day
Smart Fan Enabled
Heat/Cool: 2 Minute
(Minimum On)
Keyboard Locked
78
LED 1 Icon
(Filter)
LED 2 Icon
(Wrench/Fault)
Compressor/Auxiliary
Interlocked
Multi-stage
Figure 9: T500HPP-1 DIP Factory-Set
DIP Switch Settings
W2
1st Stage Compressor
24VAC
Figure 10: T500HPP-1 Wiring Terminals
Table 3: T500HPP-1 Output Terminal
Designations
Terminal Function
W2 Energizes auxiliary heat as
second-stage heating in emergency
heat mode
Y2 Energizes compressor No. 2 on call
for second-stage heating or cooling
W1 Energizes auxiliary heat as
last-stage heating or first-stage in
emergency heat
Y1 Energizes compressor No. 1 on call
for heating or cooling
GEnergizes fan on call for heating or
cooling or by pressing Fan button
RIndependent switching voltage
24V 24 VAC from equipment transformer
24V(c) 24 VAC (common) from equipment
transformer
OEnergizes reversing valve in the
cooling mode
BEnergizes reversing valve in the
heating mode
LED 1
LED 2
Input connection that energizes
LED 1 or LED 2 from remote status
device (See Figure 9 and Table 6.)
RS2
RS1
RS+V
Connections for outdoor air
temperature or indoor remote
sensors; refer to instructions
included with sensors.
NO
COM
NC
The relay coil is de-energized in the
night event. In all other events, the
relay coil is energized. (See
Figure 16.)

8T500 Series Programmable Thermostats Product/Technical Bulletin
ON
1
3
2
45
4 Events Per Day 2 Events Per Day
Smart Fan Disabled Smart Fan Enabled
Heat/Cool: 4 Minute
(Minimum On)
Heat/Cool: 2 Minute
(Minimum On)
Keyboard Unlocked Keyboard Locked
Fan Immediate
with Heat Call
Fan On with
Plenum Switch
Figure 11: T500HPP-2 Factory-Set DIP Switch
Settings (All Off)
RS2
RS1
RS+V
W1
B
Hpp-2wire
Compressor
Fan
Common
24VAC
Figure 12: T500HPP-2 Wiring Terminals
Table 4: T500HPP-2 Output Terminal
Designations
Terminal Function
Single-Stage
Heat Pump
Thermostat
Conventional
Single-Stage
Heat/Cool
Thermostat
W1* Jumpered to Y1
(See Note.)
Energizes on call
for heating
(See Note.)
Y1 Energizes
compressor
contactor
(See Note.)
Energizes on call
for cooling
(See Note.)
GEnergizes fan on call for heating or
cooling or by pressing Fan button
RIndependent switching voltage
(See Note.)
24V 24 VAC from equipment transformer
24V(c) 24 VAC (common) from equipment
transformer
RS2
RS1
RS+V
Connections for outdoor air temperature
or indoor remote sensors; refer to
instructions included with sensors
OEnergizes
reversing valve in
the cooling mode
Not used
BEnergizes
reversing valve in
the heating mode
Not used
Note: Single-Stage Heat Pump:
Leave the factory-installed jumper connected
between W1 and Y1 and wire O or B as shown in
Figure 12.
Conventional Single-Stage Heat/Cool:
Remove the factory-installed jumper between W1
and Y1 and wire as shown in Figure 12. Note that
the O and B terminals are not used in this
application.

T500 Series Programmable Thermostats Product/Technical Bulletin 9
Single Stage
LED 1 Icon Off
LED 2 Icon Off
4 Events Per Day
Smart Fan Disabled
Heat/Cool: 4 Minute
(Minimum On)
Keyboard Unlocked
ON
1
3
2
456
2 Events Per Day
Smart Fan Enabled
Heat/Cool: 2 Minute
(Minimum On)
Keyboard Locked
78
LED 1 Icon
(Filter)
LED 2 Icon
(Wrench/Fault)
Multi-stage
Fan Immediate
with Heat Call Fan On with
Plenum Switch
Figure 13: T500MSP-1 Factory Set
DIP Switch Settings
W2
R
NO
COM
NC
2nd Stage Heating
2nd Stage Cooling
1st Stage Heating
1st Stage Cooling
Fan
24VAC
Common
Figure 14: T500MSP-1 Wiring Terminals
Table 5: T500MSP-1 Output Terminal
Designations
Terminal Function
W2 Energizes on a call for
second-stage heat
Y2 Energizes on a call for
second-stage cooling
W1 Energizes on a call for first-stage
heat
Y1 Energizes on a call for first stage
cooling
GEnergizes fan on call for heating or
cooling or by pressing the Fan
button
RIndependent switching voltage
24V 24 VAC from equipment
transformer
24V(c) 24 VAC (common) from equipment
transformer
OEnergizes in the cooling mode
BEnergizes in the heating mode
LED 1
LED 2
Input connection that energizes
LED 1 or LED 2 from remote status
device (See Figure 13 and
Table 6.)
RS2
RS1
RS+V
Connections for outdoor air
temperature or indoor remote
sensors; refer to instructions
included with sensors
NO
COM
NC
The relay coil is de-energized in the
night event. In all other events, the
relay coil is energized. (See
Figure 18.)

10 T500 Series Programmable Thermostats Product/Technical Bulletin
Wiring Diagrams
1st Stage
Compressor
1st Stage
Heat Fan
W1 Y1 G 24V(c) R24V
T1 T2
RS+V RS1 RS2
Remote
Sensor
(if used)
Thermostat
Equipment
Electronics
If the transformer (T2) is to power all of the loads,
R and 24 must be connected by inserting jumper J 1
located above the relays. If a separate 24V
transformer (T1) is to be used, remove J 1 to
disconnect R and 24V(c).
P
P
Hcp-1diag
J1P
Optional
Figure 15: T500HCP-1 Wiring Schematic