Johnson Controls T500HCP-1, T500HPP-1, T500HPP-2, T500MSP-1 User Manual

T500 Series Programmable Thermostats

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.

FANs 216, 1628.3

Product/Technical Bulletin T500

Issue Date 0899

Features and Benefits

!!!! Low-Profile Design

!!!! No Batteries Required

!!!! Lockable Access Cover and

Keypad Lockout

!!!! Full Function Liquid Crystal

Display (LCD)

!!!! Remote Sensor Terminals

!!!! Auxiliary Output

!!!! Fuzzy Logic Control

!!!! Smart Fan Option

Figure 1: T500 Series Programmable Thermostats

Complements any decor

Retains scheduled events and temperatures
upon loss of power

Prevents unauthorized changes

Makes controls easy to read, easy to use

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)

Energizes for auxiliary equipment operation

Optimizes control performance

Provides continous fan operation in the
occupied mode and intermittent operation at
night

© 1999 Johnson Controls, Inc.

Part No. 24-8347-35, Rev. E www.johnsoncontrols.com
Code No. LIT-216173

1

ntroduction

I

ocation Considerations

L

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.

upplies Needed

S

•

drill

•

4.7 mm (3/16 in.) drill bit

•

3 mm (1/8 in.) flat-blade screwdriver

•

hammer

•

marking pencil

•

wire stripper

114. 3
(4-1/2)

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:

nstallation and Wiring

I

Note: When replacing an existing thermostat,

remove and use wire tags to identify terminal
designations.

To install and wire the thermostat:

Shock Hazard.

Disconnect power supply before
wiring connections are made to
prevent electrical shock or
possible damage to the
equipment.

T500MSP-1
T500HPP-1

T500HCP-1

T500HPP-2

Figure 2: T500 Dimensions, mm (in.)

127
(5)

101.6
(4)

Dimn

22.2
(7/8)

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.

2

T500 Series Programmable Thermostats Product/Technical Bulletin

!

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 4: Mounting the Base

Figure 3: Separating the T500 from the Base

T500 Series Programmable Thermostats Product/Technical Bulletin

3

nstalling the Thermostat Cover Lock

I

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.

eattaching the Thermostat and Cover

R

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.)

Plastic Lock Pin

Snap

plastic lock

into place.

Figure 5: Installing the Thermostat Lock

Thermostat
Base

Hinged
Ta b s

Figure 6: Installing the T500 Thermostat

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T500 Series Programmable Thermostats Product/Technical Bulletin

IP Switch Selections

D

!

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

1

2
(Smart Fan)

3

4

5

Continued on next page . . .

On Allows 2-event (day, night) programming.

Off Allows 4-event (morning, day, evening, night) programming.

On During the

Off Allows the fan to cycle with equipment or run continuously if the

On 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.

On Locks the keyboard, disabling buttons to prevent tampering. (Only the

Off Unlocks the keyboard.

On

Off

Description

equipment or runs continuously if the

Fan

after programming the thermostat. Smart Fan remembers that the fan should run
continuously during these events after that.

During the
Pressing the
continuously for that night only.

At the end of the
cycling or continuous fan) for the

pressed, regardless of the event. Changing between events does not affect the fan.

∨∨∨∨ and ∧∧∧∧ buttons will function. See

Programming Changes While the Keyboard is Locked,
[Keyboard Locked]

T500HCP-1, T500HPP-2, T500MSP-1 only:

switch.

T500HPP-1 only:

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.

T500HCP-1, T500HPP-2, T500MSP-1 only:

call for heat.

T500HPP-1 only:

heat to be on simultaneously.

morning, day, and evening

button need only be pressed once during the morning, day, or evening event

night

event, the fan automatically cycles with the equipment by default.

Fan

button during the night event overrides and causes the fan to run

night

event, Smart Fan remembers the fan selection (automatic

in this bulletin.)

Compressor/Auxiliary Interlocked: Turns off the compressor when

Compressor/Auxiliary Normal: Allows the compressor and auxiliary

events, the fan automatically cycles with the

Fan

button is pressed. To run continuously, the

morning, day, and evening

Programming the Thermostat, Making

Allows the fan to delay with the plenum

Allows fan to operate immediately with a

events and reverts back.

Fan

button is

Outdoor

Temporary [1 Hour]

and

and

T500 Series Programmable Thermostats Product/Technical Bulletin

5

DIP Switch
(Cont.)

Switch
Selection

Description

6

On

Off

7

LED 1 icon

T500HPP-1, T500MSP-1 only:

T500HPP-1, T500MSP-1 only:

T500HPP-1, T500MSP-1 only:

off/on
(See Table 5.)

8

LED 2 icon

T500HPP-1, T500MSP-1 only:

off/on
(See Table 5.)

4 Events Per Day

Smart Fan Disabled

Heat/Cool: 4 Min ute

(Minimum On)

Keyboard Unlocked

Fan Immediate

with Heat Call

1

2

3

4

5

O
N

2 Events Per Day

Smart Fan Enabled

Heat/Cool: 2 Minute
(Min imum On)

Keyboard Locked

Fan On with
Plenum Switch

Figure 7: T500HCP-1 Factory-Set DIP Switch

Settings (All Off)

Allows multi-stage heating or cooling.

Allows single-stage heating or cooling.

Optional selection: LCD icon comes on with LED 1.

Optional selection: LCD icon comes on with LED 2.

Table 2: T500HCP-1 Output Terminal
Designations

Terminal Function

W1

Y1

G

R

24V

24V(c)

RS2

RS1

RS+V

Energizes on call for heating

Energizes on call for cooling

Energizes fan on call for heating or
cooling or by pressing

Fan

button

Independent switching voltage

24 VAC from equipment transformer

24 VAC (common) from equipment
transformer

Connections for outdoor air
temperature or indoor remote
sensors; refer to instructions included
with sensors.

W1

Y1

24V

24V(c)

RS2

RS1

RS+V

Heating

Cooling

Fan

Common

Figure 8: T500HCP-1 Wiring Terminals

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T500 Series Programmable Thermostats Product/Technical Bulletin

G

R

Hcp-1wire

4 Events Per Day

Smart Fan Disabled

Heat/Cool: 4 Minute

(Minimum On)

Keyboard Unlocked

Compressor/Auxiliary

Normal

Single Stage

LED 1 Icon Off

LED 2 Icon Off

1

2

3

4

5

6

7

8

ON

Figure 9: T500HPP-1 DIP Factory-Set

DIP Switch Settings

1st Stage Compressor

24VAC

Figure 10: T500HPP-1 Wiring Terminals

2 Events Per Day

Smart Fan Enabled

Heat/Cool: 2 Minute
(Minimum On)

Keyboard Locked
Compressor/Auxiliary

Interlocked
Multi-stage

LED 1 Icon
(Filter)

LED 2 Icon
(Wrench/Fault)

W2

Table 3: T500HPP-1 Output Terminal
Designations

Terminal Function

W2

Y2

W1

Y1

G

R

24V

24V(c)

O

B

LED 1

LED 2

RS2

RS1

RS+V

NO

COM

NC

Energizes auxiliary heat as
second-stage heating in emergency
heat mode

Energizes compressor No. 2 on call
for second-stage heating or cooling

Energizes auxiliary heat as
last-stage heating or first-stage in
emergency heat

Energizes compressor No. 1 on call
for heating or cooling

Energizes fan on call for heating or
cooling or by pressing

Fan

button

Independent switching voltage

24 VAC from equipment transformer

24 VAC (common) from equipment
transformer

Energizes reversing valve in the
cooling mode

Energizes reversing valve in the
heating mode

Input connection that energizes
LED 1 or LED 2 from remote status
device (See Figure 9 and Table 6.)

Connections for outdoor air
temperature or indoor remote
sensors; refer to instructions
included with sensors.

The relay coil is de-energized in the
night event. In all other events, the
relay coil is energized. (See
Figure 16.)

T500 Series Programmable Thermostats Product/Technical Bulletin

7

4 Events Per Day

Smart Fan Disabled

Heat/Cool: 4 Minute

(Minimum On)

Keyboard Unlocked

Fan Immediate

with Heat Call

1

2

3

4

5

ON

2 Events Per Day

Smart Fan Enabled

Heat/Cool: 2 Minute
(Minimum On)

Keyboard Locked

Fan On with
Plenum Switch

Table 4: T500HPP-2 Output Terminal
Designations

Terminal Function

Single-Stage
Heat Pump
Thermostat

Conventional
Single-Stage
Heat/Cool
Thermostat

Figure 11: T500HPP-2 Factory-Set DIP Switch

Settings (All Off)

RS2
RS1

RS+V

Compressor

Fan

24VAC

Common

W1

B

Hpp-2wire

Figure 12: T500HPP-2 Wiring Terminals

Note:

W1*

Jumpered to Y1
(See Note.)

Energizes on call
for heating
(See Note.)

Y1

Energizes
compressor
contactor

Energizes on call
for cooling
(See Note.)

(See Note.)

G

R

Energizes fan on call for heating or
cooling or by pressing

Fan

button

Independent switching voltage
(See Note.)

24V

24V(c)

24 VAC from equipment transformer

24 VAC (common) from equipment
transformer

RS2
RS1

RS+V

O

Connections for outdoor air temperature
or indoor remote sensors; refer to
instructions included with sensors

Energizes

Not used
reversing valve in
the cooling mode

B

Energizes

Not used
reversing valve in
the heating mode

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.

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T500 Series Programmable Thermostats Product/Technical Bulletin