Mars 70803 Betriebsanleitung

INSTALLATION AND OPERATING INSTRUCTIONSNon-Programmable ElectronicThermostat Heat/Cool®Model 7080370803-IM 12/18/06 2:10 PM Page 1

10Wiring DiagramsTypical 5-Wire SystemRC RHGYWBOInstall JuHEAT 24 VACTRANSFORMERCOMHOTCOOL 24 VACTRANSFORMERCOMHOTFANCONTROLCOOLCONTROLHEATCONTROL7080

11Wiring DiagramsTypical Single Stage Heat Pump SystemRC RHGYWBOInstall JumperInstall JumperCOOTRAREV. VALVECOOL ENERGIZED24 VACTRANSFORMERCOMHOTFANCO

12Wiring DiagramsTypical 2-Wire Millivolt SystemRC RHGYWBOInstall JuCOOTRACOMHEATCONTROL24 VACTRANSFORMERHOT70803-IM 12/18/06 2:10 PM Page 12

13Wiring DiagramsTypical 4-Wire SystemRC RHGYWBOInstall JumperCOOTRAHEATCONTROLCOM24 VACTRANSFORMERHOTCOOLCONTROLFANCONTROL70803-IM 12/18/06 2:10 PM

1470803-IM 12/18/06 2:10 PM Page 14

15WarrantyONE YEAR LIMITED WARRANTYMotors & Armatures Inc. warrants each new MARS thermostat against any defects due tonon-conforming material or

INSTALLATION AND OPERATING INSTRUCTIONSNon-Programmable Electronic Thermostat Heat/Cool®Model 7080370803-IM 12/18/06 2:10 PM Page 16

2Compatible with low voltage single stage gas, oil or electric heating or cooling systems and single stage heatpumps. For use on 24VAC systems (not to

3Removing The Existing Thermostat1) CAUTION: Make certain the power to the system has been disconnected. 2) Remove the cover of the old thermostat a

4• GAS / ELECTRIC: Configures the thermostat to either gas/oil or electric heating systems.•C / F: Sets the display in either Celsius or Fahrenheit.•N

54) Set the system switch to the HEAT position and depress the redarrow key until the temperature set point is at least 3 degreesabove the room temper

62) When the desired setting is made, release the key and the unit will automatically store the setting after 5seconds.Cooling Fan Time Delay is facto

7Understanding Additional Features• High Temperature Protection: While in the HEAT position, if the room temperature reaches 93 F (34 C),the thermosta

8TroubleshootingSYMPTOM CORRECTIVE ACTIONDisplay is blank Install 2 fresh AA Alkaline batteriesNo heat Set system switch to HEAT and raise set point a

9(Troubleshooting cont.)SYMPTOM CORRECTIVE ACTIONSystem fan runs continuously Set fan switch to AUTO.Check thermostat wiring & connections.HI is d