Honeywell TC500A Manual de usuario
MOUNTING INSTRUCTIONS
TC500A Commercial Thermostat
CONNECTED DEVICE FOR COMMERCIAL BUILDINGS
INTRODUCTION
TC500A Commercial Touchscreen Thermostat is designed
to be wall-mounted indoors. Mount in a clean, dry location
away from windows, air ducts, and other places where
environmental factors may affect temperature and
humidity readings. If you mount the Thermostat on the
interior of an outside wall, thoroughly insulate so outside
air behind the sensor does not affect the sensor reading.
To meet the requirements of the Americans with
Disabilities Act, mount no higher than 48" from the floor
and with a minimum clear floor space of 30" X 48" (760 X
1220 mm).
Supported Documents
• TC500A-N Commercial Thermostat Datasheet (31-
00398M)
• TC500A-N Commercial Thermostat User guide (31-
00400M)
• TC500A-N Commercial Thermostat Quick start guide
(31-00401M)
• TC500A-N Commercial Thermostat Pocket guide (31-
00463M)
• TC500A Deco Plate Pocket guide (31-00457M)
When installing this product
1. Read these instructions carefully. Failure to follow
them could damage the product or cause a hazard-
ous condition.
2. Check the ratings given in the instructions and
marked on the product to make sure the product is
suitable for your application.
3. Installer must be a trained, experienced service tech-
nician.
4. After installation is complete, check the product
operation.
5. Be sure wiring complies with all applicable codes,
ordinances and regulations.
WARNING
Electrical Shock Hazard.
Can cause severe injury, death or property
damage.
Disconnect the power supply before beginning
installation to prevent electrical shock and
equipment damage. More than one power supply
may have to be disconnected.
MERCURY NOTICE
If this control is replacing a control that contains
mercury in a sealed tube, do not place your old
control in the trash. Dispose of properly. Contact
your local waste management authority for
instructions regarding recycling and the proper
disposal of an old control. If you have questions,
contact Honeywell Customer Care Center.
Location
Do not install the Thermostat unit where it can be affected
by:
— drafts or dead spots behind doors and in corners.
— hot or cold air from ducts.
— radiant heat from sun or appliances.
— concealed pipes and chimneys.
— unheated (uncooled) areas such as an outside wall
behind the thermostat.
IMPORTANT
To avoid electrical interference, which can cause
erratic performances, keep wiring runs as short as
possible and do not run thermostat wires adja-
cent to the line voltage electrical distribution sys-
tems. Use shielded cable. The cable shield must
be grounded only at the controlled equipment
case.
WHEN USED TO SENSE ROOM TEMPERATURE
Install the Thermostat about 4 ft. (1.2m) above the floor in
an area with good air circulation at average temperature.
(See Fig. 1). Confirm mounting height meets Americans
with Disabilities Act requirements.
TC500A-N/TC500A-W COMMERCIAL THERMOSTAT
31-00399M-02 | Rev.03-21
2
WHEN NOT USED TO SENSE ROOM TEMPERATURE
When using the remote-mounted temperature (and
humidity) sensor(s) to sense ambient conditions, install
the Thermostat in an area that is accessible for setting and
adjusting the temperature and settings.
Fig. 1. Typical mounting location of thermostat
This symbol on our product shows a crossed-out “wheelie-
bin” as required by law regarding the Waste of
Electrical and Electronic Equipment (WEEE) disposal. This
indicates your responsibility to contribute in saving
the environment by proper disposal of this Waste i.e. Do not
dispose of this product with your other wastes. To
know the right disposal mechanism please check the
applicable law.
Regulation (EC) No 1907/2006
According to Article 33 of Reach Regulation be informed
that the substances listed below may be contained in these
products above the threshold level of 0.1% by weight of the
listed article.
Power supply guidelines and
requirements
The thermostat uses 24VAC power from a UL Listed Class-
2 24VAC transformer (not provided in the kit). It also uses a
half-wave rectifier to convert the AC power supply to
onboard power. This enables multiple devices with half-
wave power supplies to be powered from a single,
grounded transformer.
WARNING
Half wave devices and full wave devices must not use the
same AC transformer.
You must maintain wiring polarity. Failure to do so
can result in equipment damage. If the HVAC
equipment has an internal circuit board that is
powered by the same transformer that will power
the Thermostat, verify that it is NOT full wave.
Fig. 2. Power terminals
Power supply wire sizing
Long power supply wiring runs require selecting the wire
gauge appropriately. If the wire gauge is inadequate the
increased resistance and associated voltage drop may
result in insufficient voltage supply to the Thermostat. The
recommended wire gauge guidelines are as follows.
Min. Load = 4VA (all DOs OFF, No Sylk sensor).
If 18-20AWG wire is used for R, C, RC terminal,
Max. Load = 4A, 96VA (all DOs ON).
If 22AWG wire is used for R, C, RC terminal
Max. Load = 3A, 72VA (all DOs ON).
If R-Rc power jumper is not removed, then G, W1, W2, W3,
Y1, Y2, Y3 are powered from the Thermostat’s transformer.
Minimum load includes Thermostat and analog outputs at
full load (Max. 10V voltage output with 2Kohms load).
Every relay output is N.O. (Normally Open) contacts with a
maximum switch rating of 24VAC @1A (24VA). The allowed
maximum load is 96VA, which assumes all 8 relay output
loads are powered from the controller transformer. Actual
power requirements depend on connected loads.
IMPORTANT
Transformer sizing should never exceed the maxi-
mum UL Class 2 rating.
The 24VAC secondary leads are not interchangeable.
Once a lead connects to the GND terminal, it is the
grounded lead. Observe and maintain polarity for
subsequent connections. The GND terminal provides a
reference ground for the circuit board and
communications wiring. Use 18 AWG cable for best results.
WEEE
WEEE (Waste of
Electrical and
Electronic Equipment)
• At the end of the product life,
dispose of the packaging and
product in an appropriate recycling
center.
• Do not dispose of the device with
the usual domestic refuse.
• Do not burn the device.
Product/Part Code
Substance
Name
CAS
Number
Only TC500A thermostat
mainboard PCBA,
thermostat wall plate board
PCBA
Lead 7439-92-1
Lead oxide 1317-36-8
NO
YES
4 FEET
(1.2 METERS)
NO
NO
Diode
+ DC Voltage
GND
Capacitor
Power Terminals
24VAC
R
C
TC500A-N/TC500A-W COMMERCIAL THERMOSTAT
3 31-00399M-02 | Rev.03-21
WARNING
Ensure that all Thermostat power, communications, and
I/O cabling are connected to C or COM according to
these instructions. Failure to follow these instructions
may result in Thermostat operational and
communication failures or equipment damage.
Detaching the wallplate from the
display
The thermostat is an assembly of a wallplate and a display.
It must be disassembled before starting the mounting
procedure.
1. At bottom of the thermostat, loosen the Security
screw using a screwdriver by turning it counter-
clockwise direction.
2. Hold the display unit and pull the paper tail.
Fig. 3. Detaching the wallplate
Mounting wallplate on the drywall
Mount the wallplate vertically on the wall. It supports 18-
22 AWG (0.5-0.75mm2) wires.
NOTE: If you are using a TC500A Deco plate for thermo-
stat mounting, refer to the Deco plate pocket
guide (31-00457M) also.
1. Before mounting the wallplate, make sure that the
thermostat wires are stripped to the length marked
on the wallplate.
Fig. 4. Wire strip length
2. Position and level the wallplate along the wall and
mark the drilling location using a pencil.
Fig. 5. Wallplate drilling locations
3. Remove the wallplate and drill two pilot holes on the
wall, on the marks. For drywall, drill 3/16-in. holes.
For firmer material such as plaster, drill 7/32-in.
holes.
4. Gently tap anchors (provided in the kit) into the pilot
holes until flush with the wall.
5. Pull the wires through the wiring opening of the wall-
plate and position the wallplate over the mounting
holes.
6. Insert the screws into the holes and tighten (screw
torque 0.1Nm).
Mounting the wallplate on the
junction box (optional)
The thermostat wallplate can be mounted vertically on a
US 2”*4” or UK 75*75mm junction box.
NOTE: If you are using other than US 2”*4” or UK
75*75mm junction boxes, then a TC500A Deco
plate can be used for thermostat mounting. Refer
to the Deco plate pocket guide (31-00457M).
1. Install the junction box and perform the wiring as per
its manufacturer’s instruction.
2. Before mounting the wallplate, make sure that the
thermostat wires are stripped to the length marked
on the wallplate.
3. Pull the wires through the wiring opening of the wall-
plate, and position the wallplate along the junction
box to align the mounting holes. For junction box
screw holes, refer to Fig. 5.
4. Insert the screws into the holes and tighten.
Display unit
Wallplate
Paper tail
Security
screw
4 x 11/32”
(9mm)
2 - 3/8”
(60.3mm)
(UK 75X75cm
junction box
screw holes)
4 x 3/16”
(4.5mm) Drilling location for
wall mounting
Drilling location for wall mounting
3 - 1/4”
(82.75mm)
(US 2”X4” junction
box screw holes)
TC500A-N/TC500A-W COMMERCIAL THERMOSTAT
31-00399M-02 | Rev.03-21
4
Accessories ordering part numbers
Terminal identification
Fig. 6. Thermostat terminal assignments
WARNING
Do NOT wire the thermostat to line voltage.
IMPORTANT
Remove R to RC jumper only for 2 transformer sys-
tems
Table 1. Accessories Part Numbers
Decoplate-N TC500 deco plate for NA
junction boxes
Decoplate-W TC500 deco plate for
Global junction boxes
Table 2. Terminal identification
Terminal Label Connection
24VAC
R24VAC power from heating Class
2 transformer
C
24VAC common (Neutral). For 2
transformer systems, use
common wire from the cooling
transformer
UIO1
1 Universal input/output
COM Common
UIO2
2 Universal input/output
COM Common
UI1
1 Universal input
COM Common
UI2
2 Universal input
COM Common
Sylk
Sylk bus, master, power output
Sylk bus, master, power output
RS485
+BACnet Communications
(coming soon)
_BACnet Communications
(coming soon)
R-RC
Jumper between R and RC for
single transformer system,
remove the jumper in two
transformer system.
24VAC
RC 24VAC power from cooling Class
2 transformer
G Fan
Y1 Relay output, Compressor
contactor (stage1)
Y2 Relay output, Compressor
contactor (stage2)
Y3
Relay output, Compressor
contactor (stage3)/Configurable
Output
W1 Relay output, Heat (stage1)
W2 Relay output, Heat (stage2)
W3 Relay output, Heat
(stage3)/Configurable Output
Aux
Relay dry contact, Aux-1
Relay dry contact, Aux-2
Table 2. Terminal identification (Continued)
Terminal Label Connection
TC500A-N/TC500A-W COMMERCIAL THERMOSTAT
5 31-00399M-02 | Rev.03-21
Wiring the wallplate
IMPORTANT
All wiring must comply with local electrical codes
and ordinances.
NOTE: Supports 18-22 AWG (0.5-0.75mm2). Solid wire is
recommended.
Follow equipment manufacturer wiring instructions when
available. A letter code is located near each terminal for
identification.
CAUTION
Power must not be connected while wiring.
Wiring a unit that is powered may result in electrical
shock and/or equipment damage.
1. Connect wires to the terminals. See Fig. 6 for terminal
assignments and Table 1 for terminal descriptions.
2. Insert the solid wire into the terminal hole directly.
3. (optional) To insert stranded wire end into the wiring
terminal, push the Release tool into the Tool hole and
insert the wires.
Fig. 7. Wire release
4. Push excess wire back into the hole.
5. Check for the loose or frayed wire that may cause a
short.
Mounting the display unit
After all wiring is completed, install the display onto the
wallplate.
1. Hold the display in a tilted position so the latches fit
onto the rectangular slots of the wall plate as shown
in the below image.
2. Insert the latches onto the wallplate rectangular slots
and rotate the display and push it onto wallplate.
3. Gently tighten the Security screw using a screwdriver
by turning it in the clockwise direction (screw torque
0.1Nm).
Release tool
Tool hole
Wiring
terminal
Wallplate
Wall
Wallplate
Bottom screw
Display
Rectangular slots
Latches
Wall
Wallplate
Display
TC500A-N/TC500A-W COMMERCIAL THERMOSTAT
® U.S. Registered Trademark
© 2021 Honeywell International Inc.
31-00399M-02 | Rev.03-21
Honeywell Building Technologies
Honeywell
715 Peachtree Street NE
Atlanta, GA 30308
customer.honeywell.com
buildingcontrols.honeywell.com
DIMENSIONS
3 -19/32 ” (91.2 mm)
4 - 15/32”
(113.7 mm)
4 x 11/32”
(9mm)
2 - 3/8”
(60.3mm)
3 - 1/4”
(82.75mm)
4 x 3/16”
(4.5mm)
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