Trane 3518-7064 Installation Instructions

Auto Changeover
3518-7064
Unit Mounted 2 or 4 Pipe
Fan Coil Thermostat, 3 Speed
• 2-pipe systems
• 4-pipe systems
• Pipe sensor compatible
• Configurable
• Large display with backlight
• Selectable Fahrenheit or
Celsius
• Relay outputs (minimum
voltage drop in thermostat)
• Remote sensing
Installation Guide
SAFETY WARNING
Only qualified personnel should install and service the equipment. The installation, starting
up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous
and requires specific knowledge and training. Improperly installed, adjusted or altered
equipment by an unqualified person could result in death or serious injury. When workin9
on the equipment, observe all precautions in the literature and on the tags, stickers, and
labels that are attached to the equipment.
AUGUST 2020 ACC-SVN223B-EN
©2020 TRANE
• This thermostat is for 18-30 VAC applications only; do not use on voltages over 30 VAC
• Use this thermostat only as described in this manual
Warnings, Cautions, and Notices
Read this manual thoroughly before operating or servicing this unit. Safety advisories
appear throughout this manual as required. Your personal safety and the proper operation
of this machine depend upon the strict observance of these precautions.
The two types of advisories are defined as follows:
Indicates a potentially hazardous situation which, if not
WARNING
avoided, could result in death or serious injury.
Indicates a situation that could result in equipment or
NOTICE
property-damage only accidents.
Important Environmental Concerns
Scientific research has shown that certain man-made chemicals can affect the earth's
naturally occurring stratospheric ozone layer when released to the atmosphere. In
particular, several of the identified chemicals that may affect the ozone layer are
refrigerants that contain Chlorine, Fluorine and Carbon (CFCs) and those containing
Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these
compounds have the same potential impact to the environment. Trane advocates the
responsible handling of all refrigerants-including industry replacements for CFCs such as
HCFCs and HFCs.
Important Responsible Refrigerant Practices
Trane believes that responsible refrigerant practices are important to the environment, our
customers, and the air conditioning industry. All technicians who handle refrigerants must
be certified according to local rules. For the USA, the Federal Clean Air Act (Section 608)
sets forth the requirements for handling, reclaiming, recovering and recycling of certain
refrigerants and the equipment that is used in these service procedures. In addition, some
states or municipalities may have additional requirements that must also be adhered to for
responsible management of refrigerants. Know the applicable laws and follow them.
18-30 VAC
Proper Field Wiring and Grounding Required!
Hardwired
Failure to follow code could result in death or serious injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid
these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC
and your local/state electrical codes.
Personal Protective Equipment Required!
Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards. Before
installing/servicing this unit, technicians MUST put on all Personal Protective Equipment (PPE) recommended
for the work being undertaken. ALWAYS refer to appropriate MSDS sheets and OSHA guidelines for proper PPE.
When working with or around hazardous chemicals, ALWAYS refer to the appropriate MSDS sheets and OSHA
guidelines for information on allowable personal exposure levels, proper respiratory protection and handling
recommendations. If there is a risk of arc or flash, technicians MUST put on all necessary Personal Protective
Equipment (PPE) in accordance with NFPA70E for arc/flash protection PRIOR to servicing the unit. Failure to
follow recommendations could result in death or serious injury.
Follow EHS Policies!
Failure to follow instructions below could result in death or serious injury.
All Trane personnel must follow the company's Environmental, Health and Safety (EHS) policies when
performing work such as hot work, electrical, fall protection, lockout/tagout, refrigerant handling, etc. Where
local regulations are more stringent than these policies, those regulations supersede these policies.
Non-Trane personnel should always follow local regulations.
System 1
Heat Only
Black
R
24 24
VAC White VAC
C
Red
Heat W1
Y1
Purple
GH
Fan High
Yellow
Fan Medium GM
Gray
Fan Low GL
Orange/White
Pipe Sensor PS
(Optional)
Red/White
Remote Sensor RS
Blue/White
SC
System 5
2-Pipe Manual Changeover
with Auxiliary
Black
R
24 24
VAC White VAC
C
Red
Heat/Cool W1
Blue
Auxiliary Y1
Purple
GH
Fan High
Yellow
Fan Medium GM
Gray
Fan Low GL
Orange/White
Pipe Sensor PS
(Required)
Red/White
Remote Sensor RS
Blue/White
SC
WARNING
WARNING
WARNING
Wiring Diagrams
System 2 System 3
Cool Only 2-Pipe Manual Changeover
Black Black
R
24
White VAC White
C
Red
W1 Heat/Cool
Blue
Cool Y1
Purple Purple
GH
Fan High Fan High
Yellow Yellow
Fan Medium GM Fan Medium
Gray Gray
Fan Low GL Fan Low
Orange/White Orange/White
Pipe Sensor PS Pipe Sensor
(Optional) (Optional)
Red/White Red/White
Remote Sensor RS Remote Sensor
Blue/White Blue/White
SC
System 6 System 7
4-Pipe Manual Changeover 4-Pipe Auto Changeover
Black Black
R
24
White VAC White
C
Red Red
Heat W1 Heat
Blue Blue
Cool Y1 Cool
Purple Purple
GH
Fan High Fan High
Yellow Yellow
Fan Medium GM Fan Medium
Gray Gray
Fan Low GL Fan Low
PS
Red/White Red/White
Remote Sensor RS Remote Sensor
Blue/White Blue/White
SC
Icon Descriptions
The configuration mode is used to set the thermostat to match your heating/cooling system.
To configure the thermostat, perform the following steps:
1. Verify the thermostat is in the OFF mode. Press the SYS button until off mode displays.
2. Press the CONFIG button for 5 seconds while the thermostat is in OFF mode.
Fan
Press the up or down button to change settings within each screen.
operation
icon
Auto
Press the CONFIG button to advance to the next screen.
Fan
Note: Pressing the SYS button will return you to the previous screen.
To exit configuration mode, press the CONFIG switch for 5 seconds.
HEAT COOL
Heating operation Cooling operation
icon icon
1 – System
Specifications
Select the type of operation you require.
Electrical rating: 18-30 VAC, 2 amp maximum per output
1. Heat Only is for a system with only heating.
T emperature control range: 45°F to 90°F (7°C to 32°C)
2. Cool Only is for a system with only cooling.
Accuracy: ± 1°F (± 0.5°C)
3. 2-Pipe Manual Changeover is for a 2 pipe system that handles both heating and cooling. The user
Timing: Backlight Operation: 10 seconds
selects whether the system will be set to heating or set to cooling.
Terminations: R, C, W1, Y1,GH, GM, GL, PS, RS, SC
4. 2-Pipe Seasonal Changeover is for a 2 pipe system that handles both heating and cooling. The
thermostat selects whether the system will be set to heat or set to cool based on the pipe sensor
temperature. (Default)
Package Contents/Tools Required
5. 2-Pipe Manual Changeover with Auxiliary is for a 2 pipe system that handles both heating and
Package includes: 3518-7065 thermostat on base, thermostat
cooling. The user selects whether the system will be set to heat or set to cool. If set to heat and the
cover, screws and wall anchors, Installation pipe sensor indicates there is not heat, the auxiliary output will be turned on.
guide.
6. 4-Pipe Manual Changeover is for a 4 pipe system. The user selects whether the system will be set
Tools required for installation: Drill with 3/16" bit, hammer, to heat, cool or off.
screwdriver
7. 4-Pipe Auto Changeover is for a 4 pipe system. The user selects whether the system will be set to
heat, cool, heat & cool or off.
2 – Temperature Scale
System 4
This thermostat can function in Fahrenheit or Celsius.
2-Pipe Seasonal Changeover
F = Fahrenheit (Default)
C = Celsius
Black
R R
24
VAC White
3 – Valve Type
C C
This thermostat operates with Normally Open or Normally Closed valves. Select the correct valve
Red
W1 Heat/Cool W1
type for your system.
no = Normally Open (Default)
Y1 Y1
nc = Normally Closed
Purple
GH GH
Fan High
Yellow
4 – N/A
GM Fan Medium GM
Gray
GL Fan Low GL
5 – N/A
Orange/White
PS Pipe Sensor PS
(Required)
6 – Pipe Sensor (Y/N) (for 2 pipe system only)
Red/White
RS Remote Sensor RS
Select whether you are using a pipe sensor to monitor the pipe temperature.
Blue/White
n = No Pipe Sensor Connected
SC SC
y = Pipe Sensor Connected (Default)
Wire Designator
7 – Pipe Sensor Cooling
Descriptions
Pipe temperature below this setting is considered to be cooling. If pipe sensor temperature is
R – 24 VAC Hot Black
R above this selected temperature for more than the Pipe Sensor Delay Time the cool valve will be
turned off.
C – 24 VAC Common White
C
Changes setting between 50ºF and 65ºF (10.0ºC and 18.5ºC) Default: 60
W1 – Heat Red
W1
Y1 – Cool Blue
8 – Pipe Sensor Heating
Y1
GH – Fan High Purple
Pipe temperature above this setting is considered to be heating. If pipe sensor temperature is
below this selected temperature for more than the Pipe Sensor Delay Time the heat valve will be
GM – Fan Medium Yellow
GH
turned off.
GL – Fan Low Gray Changes setting between 70ºF and 90ºF (21.0ºC and 32.0ºC) Default: 80
GM
PS – Pipe Sensor (optional) Orange/White
GL
9 – Pipe Sensor Delay Time
RS – Remote Sensor Red/White
This is the time that the valve will be open to verify the pipe temperature before the valve is turned
PS
SC – Sensor Common Blue/White
off. This gives time for circulation through the system.
Changes setting between 0 and 5 minutes at 1 minute intervals Default: 5
RS
SC
Configuration Mode
SYS
Up
button
CONFIG
Down
FAN
button
Configuration Mode Settings