Pro1 Technologies T501M Mechanical Thermostat Instruction Manual
- June 12, 2024
- Pro1 Technologies
Table of Contents
Installation Manual
T501M
Thermostat Application Guide
For Use On
Most 24V Heating and A/C Systems
Gas or Oil Heat
Electric Furnace
Heat Pump With NO Auxiliary Heat
Heat Only Systems
Cool Only Systems
Millivolt Systems
NOT For Use On
Multi Stage Systems
Line Voltage Systems
Compressors With No Built In Delay
3 Wire Hydronic Systems
Specifications
Power Source ………………………………….. 18-30 VAC
Load Rating………………………………………. 1 AMP per terminal, 1.5 AMP maximum on all
terminals combined
Operating Humidity ……………………….. 90% Non-condensing
maximum Heat anticipator range ……………………… 0.15A to 1.2A
Cool anticipator range ……………………. Fixed
Millivolt ……………………………………………… 0.15A for 0.75 VDC systems
Temperature range …………………………..50˚ – 90˚ F ( 10˚ – 32˚ C )
®U.S. Registered Trademark. Patents pending Copyright ©2018 All Rights
Reserved.
Installation Tips
A trained, experienced technician must install this product.
Carefully read these instructions. You could damage this product or cause a
hazardous condition if you fail to follow these instructions.
Wall Locations
The thermostat should be installed approximately 4 to 5 feet above the floor.
Select an area with average temperature and good air circulation.
Installation Tip
Pick an installation location that is easy for the user to access. The
temperature of the location should be representative of the building.
Mercury Notice
All of our products are mercury free. However, if the product you are
replacing contains mercury, dispose of it properly. Your local waste
management authority can give you instructions on recycling and proper
disposal.
Do not install thermostat in locations:
- Close to hot or cold air ducts
- That are in direct sunlight
- With an outside wall behind the thermostat
- In areas that do not require conditioning
- Where there are dead spots or drafts (in corners or behind doors)
- Where there might be concealed chimneys or pipes
Installation Tip:
Electrical Hazard Failure to disconnect the power before beginning to install
this product can cause electrical shock or equipment damage.
Private Label Badge
Subbase Installation
- Horizontal Mount
- Vertical Mount
For horizontal mount, install
one left screw and one right screw. For vertical mount, install one top screw
and one bottom screw.
Removing The Private Label Badge
Gently slide a screwdriver into the bottom edge of the badge. Gently turn the
screwdriver counter clockwise. The badge is held on by a magnet in the front
plastic. The badge should pry off easily. DO NOT USE FORCE.
About The Badge
All of our thermostats use the same universal magnetic badge. Visit the
company website to learn more about our free private label program.
Wiring
Caution: Electrical Hazard Failure to disconnect the power before
beginning to install this product can cause electrical shock or equipment
damage.
Wiring
- If you are replacing a thermostat, make note of the terminal connections on the thermostat that is being replaced. In some cases the wiring connections will not be color coded. For example, the green wire may not be connected to the G terminal.
- Loosen the terminal block screws. Insert wires then retighten terminal block screws.
- Place nonflammable insulation into wall opening to prevent drafts.
Warning:
All components of the control system and the thermostat installation must
conform to Class II circuits per the NEC Code.
Installation Tip
Do not overtighten terminal block screws, as this can damage the terminal
block. A damaged terminal block can keep the thermostat from fitting on the
subbase correctly or cause system operation issues.
Max Torque = 6in-lbs.
Terminal Designations
O Heat pump changeover valve energized in cooling
B Heat pump changeover valve energized in heating
W Heat relay
RH Transformer power for heating
RC Transformer power for cooling
G Fan relay
Y Compressor relay
Wiring Tips
RH & RC Terminals
For single transformer systems, lea the jumper wire in place between the RH
and RC. Remove jumper wirfor two transformer systems.
Wire Specifications
Use 18-22 gauge thermostat wire.
Heat Pump Systems (With NO AUX or Emergency Heat)
If wiring to a heat pump, use a small piece of wire (not supplied) to connect
terminals W and Y.
Wiring Diagrams
Power supply
Factory-installed jumper. Remove only when installing on 2-transformer systems
Use either O or B terminals for changeover valve
Use a small piece of wire (not supplied) to connect W and Y terminals
Removing & Replacing The Front Cover
Replacing Application Faceplates
To remove faceplate from the front cover, press the back of the faceplate near
the edge of the front cover until the faceplate snaps out of its place.
Replace different faceplate by placing the new faceplate in open space on the
front of the front cover.
Press the edge of the faceplate into the front of the front cover until it
snaps into place.
Anticipator Setting
Note
For accurate temperature control, the adjustable heat anticipator must be set
correctly. The anticipator setting should match the current draw of the system
in heat mode for best results.
Heating Anticipator Setting
Set the adjustable heat anticipator to match the current draw of the system in
heat mode. With the thermostat wired to the HVAC system and mounted on the
wall, remove the thermostat from the subbase. Place ammeter probes on the RH
and W terminals.
After one minute of heating runtime, the ammeter will show a steady current
draw value. This current draw value in milliamps on the ammeter is the same
value that the anticipator needs to be set to for best results. Set
anticipator dial to match the steady ammeter reading in milliamps.
To access heat anticipator adjustment arm, pull the cover off from the front of thermostat.
Pro1 Technologies
P.O. Box 3377
Springfield, MO 65804
Toll Free:888-776-1427
Web: www.pro1iaq.com
Hours of Operation: M-F 9AM – 6PM Eastern
Documents / Resources
| Pro1
Technologies T501M Mechanical
Thermostat
[pdf] Instruction Manual
T501M Mechanical Thermostat, T501M, Mechanical Thermostat, Thermostat
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References
Read User Manual Online (PDF format)
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