Summary of the content on the page No. 1
Y594
(Multistage Thermostat Subbase)
Package
®
TRADELINE
INSTALLATION INSTRUCTIONS
Subbase Ratings
APPLICATION
SWITCH RATING: 7.5A inrush, 2.5A running at 30 Vac.
These Y594G and Y594J combination packs are designed
MOUNTING: Designed for mounting on wall or horizontal
to meet the specific requirements of Carrier heat pump
outlet box.
equipment. The Y594 packs are designed for 2 stage heat
and 1 stage cool applications. The system switch is SUPL
HT-HEAT-OFF-COOL or SUPL HT-ON-OFF. The fan
switc
Summary of the content on the page No. 2
Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE RECYCLING NOTICE Mounting and Wiring the Subbase This control contains mercury in a sealed tube. Disconnect power supply to prevent electrical shock or Do not place control in the trash at the end of its equipment damage. All wiring must comply with local useful life. electrical codes and ordinances. Follow equipment manufacturer wiring instructions when available. If this control is replacing a control that contains mercury in a sealed tube, do not p
Summary of the content on the page No. 3
Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE VERTICAL MOUNTING Note the tabs along the top inside edge of the OUTLET SCREWS (2) 1 BOX thermostat base. The tabs fit into the subbase notches. Mount the thermostat on the subbase and COVER ADAPTER PLATE 2 tighten the captive mounting screws. See Fig. 1. Do RING 2 not overtighten captive mounting screws. This can damage the threads in the subbase. Place the upper edge of the thermostat cover on the base and swing cover downward until it engages
Summary of the content on the page No. 4
Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE ON R FAN G AUTO CO 10 8 12 C1 Y 11 9 OFF O ON CO STAGE SUPL. HEAT P SUPL. HEAT E H1 32 L ON C 4 H2 6 W2 5 ON X SUPL. HEAT FIELD WIRING CONNECTION DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT SYSTEM COMPONENTS THERMOSTAT SUBBASE L1 L2 (HOT) 1 R FAN FALL COMPRESSOR CONTACTOR SWITCH Y H1 AUTO 2 G ON FAN RELAY 3 W2 HEAT RELAY 1 H1 ANTICIPATOR OUTDOOR 4 THERMOSTAT H2 ANTICIPATOR SUPL. HT. LED (RED) L 5 HEAT RELAY HEAT RELAY 2 H2 FALL CONT
Summary of the content on the page No. 5
Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE ON R FAN G AUTO C0 8 10 12 C1 Y COOL 9 COOL O OFF 11 C0 STAGE HEAT P SUPL. SUPL. HEAT HEAT E HEAT H1 2 L HEAT 3 C 4 6 H2 5 W2 HEAT X SUPL. HEAT FIELD WIRING CONNECTION DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT SYSTEM COMPONENTS THERMOSTAT SUBBASE L1 L2 (HOT) 1 FALL R FAN COMPRESSOR CONTACTOR H1 SWITCH Y 2 AUTO G 3 ON H1 FAN RELAY HEAT RELAY 1 ANTICIPATOR 2 W2 4 H2 OUTDOOR ANTICIPATOR SUPL. HT. THERMOSTAT FALL LED (RED) 5 L H2 6
Summary of the content on the page No. 6
Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE ON R FAN G AUTO C1 8 Y 9 OFF CO 10 ON SUPL. HEAT O ON H1 1 4 2 ON E SUPL. HEAT H2 6 W2 L C SUPL. HEAT SUPL. HEAT FIELD WIRING CONNECTION DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE 1 L1 1 O (HOT) H1 ANTICIPATOR L2 FAN SWITCH AUTO G ON 2 FAN RELAY R H1 OUTDOOR THERMOSTAT FALL 4 W 2 EM. HT. RELAY 1 H2 6 EM. HT. RELAY EM. HT. RELAY 2 H2 ANTICIPATOR CONTACT 1 FALL SYSTEM SWITCH E EM.
Summary of the content on the page No. 7
Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE ON R FAN G AUTO C1 8 Y 9 10 CO COOL OFF HEAT SUPL. HEAT O HEAT H1 4 1 2 HEAT E SUPL. HEAT H2 6 W2 L C SUPL. HEAT SUPL. HEAT FIELD WIRING CONNECTION DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE 1 L1 1 O (HOT) H1 ANTICIPATOR L2 FAN SWITCH AUTO G ON 2 FAN RELAY R H1 OUTDOOR THERMOSTAT FALL 4 W 2 HEAT RELAY 1 H2 6 HEAT RELAY HEAT RELAY 2 H2 ANTICIPATOR CONTACT 1 FALL SYSTEM SWITCH E HE
Summary of the content on the page No. 8
Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE LED Indication Set system switch on subbase at SUPL. HT. The SUPL. HT. LED should light. Simulate compressor failure and energize the system. The FAULT LED should light. CALIBRATION Thermostat These thermostats are accurately calibrated at the factory. They do not have provision for field calibration. 1.2.8 STAGE TWO MOVE INDICATOR TO ANTICIPATOR Thermometer MATCH CURRENT RATING HEATING CONTROL OF PRIMARY CONTROL The thermometer in your thermostat has
