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INSTALLATION
DESCRIPTION
This Digital Thermostat uses microcomputer
technology to provide precise time, humidity,
and temperature control. This thermostat
SPECIFICATIONS
(-)HC-TST402DFMS: 7 Day program-
ming; residential applications.
ELECTRICAL DATA
Electrical Rating:
20 to 30 VAC, 50/60 Hz with common
0.05 to 1.5 Amps per terminal
2.5 Amps maximum total load (all
terminals combined).
Hardwired only.
C terminal is required.
PRECAUTIONS
WARNING
!
Do not short out terminals on gas valve
or primary control to test. Short or
incorrect wiring will damage thermostat
and could cause personal injury and/or
property damage.
Do not use on circuits exceeding
specified voltage. Higher voltage will
damage thermostat and could cause
shock or fire hazard.
Thermostat installation and all compo-
nents of the system shall conform to
Class II circuits per the NEC code.
MULTI-STAGE/HEAT PUMP INSTALLATION/CONFIGURATION
offers the flexibility to design heating and
cooling programs that fit building needs.
This thermostat is adaptable to most 24 volt
Standard Systems:
Multi-stage gas, oil, electric.
Single-stage or two-stage compressor
heat pump.
THERMAL DATA
Setpoint Temperature Range:
45° to 99°F (7° to 37°C)
CAUTION
!
To prevent electrical shock and/or
equipment damage, disconnect electric
power to system at main fuse or circuit
breaker box until installation is
complete.
NOTE
Read all instructions thoroughly before
beginning installation.
This thermostat is intended for use with a
low voltage system. Do not use on a line
voltage system.
(-)HC-TST402DFMS
residential forced air multi-stage or heat
pump systems with electric or fossil fuel
auxiliary.
Operating Ambient Temperature:
32° to 110°F (0° to 43°C)
Operating Humidity Range:
90% non-condensing max.
Shipping Temperature Range:
-4° to 149°F (-20° to 65°C)
Do not exceed ratings shown in the Specifi-
cations section, above. If in doubt about the
electrical ratings of your heating/cooling
system, have it inspected by a qualified
heating and air conditioning contractor or
licensed electrician.
All wiring must conform to local and
national electrical codes and ordinances.
This control is a precision instrument, and
should be handled carefully. Rough handling
or distorting components could cause the
control to malfunction.
Part No. 37-6775A
0615
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Related Manuals for Rheem HC-TST402DFMS Series
Summary of Contents for Rheem HC-TST402DFMS Series
- Page 1 (-)HC-TST402DFMS MULTI-STAGE/HEAT PUMP INSTALLATION/CONFIGURATION INSTALLATION DESCRIPTION This Digital Thermostat uses microcomputer offers the flexibility to design heating and residential forced air multi-stage or heat technology to provide precise time, humidity, cooling programs that fit building needs. pump systems with electric or fossil fuel and temperature control.
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Page 2: Installation
INSTALLATION ATTENTION! Remove the front cover of the old thermo- Place the base over the hole in the wall stat. With wires still attached, remove wall where the wires come out and mark mount- This product does not contain mercury. plate from the wall. - Page 3 MULTI-STAGE TERMINAL OUTPUTS Refer to equipment manufacturers’ instruc- This thermostat is designed to operate a Use the terminal output information below to tions for specific system wiring information. single-transformer system. If you have a two- help you wire the thermostat properly for transformer system, cut and tape off one your multi-stage system.
- Page 4 CONFIGURATION SWITCHES RESET SWITCH See the Troubleshooting section at the end of this document for more information about the function of this switch. E2/P SWITCH (DHM) TERMINAL FUNCTION The E2/P switch is located on the back of the thermostat body (see fig. 2). This switch controls how the DHM terminal will be energized.
- Page 5 INSTALLER CONFIGURATION BEFORE TURNING POWER ON, please HEAT PUMP COMPRESSOR PROGRAMMABLE COOL FAN-OFF read the following instructions. Before CONFIGURATION. AND FAN-ON DELAY. operating the system, you must configure (Installer table step 2; this item is displayed (Installer table steps 7 and 8.) These items the thermostat to operate properly with only when heat pump was selected in step 1.) allow a selection of 0 to 127 seconds of fan-...
- Page 6 INSTALLER TABLE NOTE: You must be in the User Configuration Menu to enter the Installer Table. Firmly press TIME TIME at same time and release to enter the Configuration Menu. BACK Step Press Button(s) Displayed (Factory Default) Press UP or DOWN to select: COMMENTS Page Selects type of system.
- Page 7 COMPRESSOR OFF DELAY PROGRAMMABLE BLOWER BALANCE POINT Lockout Bypass Option Installer table, step 11 is available if the fossil fuel kit alternative option (PUMP Installer table step 14, bbP, is available only FOR QUALIFIED SERVICE TECH- OFF) is selected. when configured for Heat Pump systems, NICIANS’...
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Page 8: Service Reminder
SERVICE REMINDER The Service Button Menu allows you to view or program as many as 4 reminders that indicate when service is required. 1. Humidifiers = A programmable run time in hours to indicate on the LCD when the humidifier will need to be serviced. 2. -
Page 9: Check Thermostat Operation
CHECK THERMOSTAT OPERATION FAN OPERATION right of HOLD, indicating that the thermostat is calling for Humidification. COOL/DEHUMIDIFY If your system does not have a G terminal If configured for Heat Pump 1, 2, or 3 1. Press the button until COOL is SYSTEM Connection, skip to HEAT/HUMIDITY the third stage of... - Page 10 TROUBLESHOOTING Symptom Possible Cause Corrective Action No Heat/No Cool/No Fan 1. Blown fuse or tripped circuit breaker. Replace fuse or reset breaker. (Common Problems) 2. Furnace power switch to OFF. Turn switch to ON. 3. Furnace blower compartment door or Replace door panel in proper position to engage panel loose or not properly installed.
- Page 11 TROUBLESHOOTING Symptom Possible Cause Corrective Action Thermostat Setting and Thermostat 1. Thermostat thermometer setting requires The thermometer can be adjusted +/- 5 degrees. Thermometer Disagree adjustment. See Temperature Display Adjustment in the Operating Manual under Configuration. Thermostat Display Shows CHCK PAD, 1.
- Page 12 H O M E O H O M E O WNER HELP LINE WNER HELP LINE WNER HELP LINE: : : : : 1-800-284-2925 1-800-284-2925 1-800-284-2925 H O M E O H O M E O H O M E OWNER HELP LINE WNER HELP LINE 1-800-284-2925 1-800-284-2925...