Download Honeywell TRADELINE Y594 User's Manual
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Y594 (Multistage Thermostat Subbase) Package TRADELINE ® INSTALLATION INSTRUCTIONS Subbase Ratings APPLICATION These Y594G and Y594J combination packs are designed to meet the specific requirements of Carrier heat pump 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 switch is AUTO-ON. See Table 1 for model information and cross reference from Carrier part numbers. SWITCH RATING: 7.5A inrush, 2.5A running at 30 Vac. MOUNTING: Designed for mounting on wall or horizontal outlet box. Table 1. Heat Pump Thermostat/Subbase Combinations. OS No. Fig. No. Y594G1666 Replaces Carrier Changeover Mode Contains Replaces Honeywell 7 T874G2004 Q674L1892 Y507J1011 T874G1055 Q674L1041 99TZ90041106 HH07AT171 HH93AZ175 Manual changeover in cooling Y594G1674 6 T874G2004 Q674J1274 Y507J1003 T874G1055 Q674J1035 99TZ90040106 HH07AT171 HH93AZ173 Auto changeover in cooling Y594J1001 5 T874J1069 Q674L1900 — T874J1002 Q674L1074 or Q674L1637 — HH07AT175 HH93AZ186 or HH93AZ195 Manual changeover in cooling Y594J1019 4 T874J1069 Q674J1282 — T874J1002 Q674J1068 or Q674J1159 — HH07AT175 HH93AZ183 or HH93AZ196 Auto changeover in heating Thermostat Ratings OPERATION SWITCHING: sealed mercury switch. SWITCH RATINGS: First Stage Heating and Cooling: 6.5A inrush, 1.5A maximum running at 25 Vac. Second Stage Heating and Cooling: 1.5A maximum running at 30 Vac. Changeover Switch: 6.5A inrush, 1.5A running at 25 Vac. HEAT ANTICIPATOR: First Stage Heating and Cooling: fixed voltage type, 1.0A. Second Stage Heating: adjustable, 0.10 to 1.2A; other models, fixed voltage type, 1.0A. TEMPERATURE SETTING RANGE: 42°F to 88°F (6°C to 31°C). The two stages of heat are energized sequentially with changes in temperature. Stage one comes on first; then if the temperature at the thermostat continues to move away from the setpoint, the second stage comes on. The thermostat is set with about 2°F (1°C) between stages. As the heating equipment runs and the temperature begins to move back toward the set point, stage 2 goes off first, then stage one. Subbases include an LED (light emitting diode) indicator. This indicator lights to show that the heat pump cannot operate and the supplemental heat stage is providing all heating. This condition can occur in two instances; when the subbase system switch is set at SUPL. HT. and when the heat pump compressor has malfunctioned. The LEDs are not field replaceable. Copyright © 1995 Honeywell Inc. • • All Rights Reserved X-XX UL 69-0920 Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE RECYCLING NOTICE Mounting and Wiring the Subbase This control contains mercury in a sealed tube. Do not place control in the trash at the end of its useful life. Disconnect power supply to prevent electrical shock or equipment damage. All wiring must comply with local 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 place your old control in the trash. Mount the subbase on a wall or horizontal outlet box. To mount it on a vertical outlet box, order Honeywell part no. 196393A Cover Plate Assembly, which includes an adapter ring with two screws for vertical outlet box mounting and a cover plate to cover marks on the wall. Contact your local waste management authority for instructions regarding recycling and the proper disposal of this control, or of an old control containing mercury in a sealed tube. To install subbase, proceed as follows: � Prepare a hole for the thermostat wires at the chosen location. Run wires to location. � Pull about 6 in. (152 mm) of wire through the hole. INSTALLATION When Installing this Product… IMPORTANT Use 18 gauge, color-coded thermostat cable for proper wiring. � Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous condition. � Check the ratings given in the instructions and on the product to make sure the product is suitable for your application. � Installer must be a trained, experienced service technician. � After installation is complete, check out product operation as provided in these instructions. � If mounting the subbase on a vertical outlet box, install adapter ring with the two screws provided in the assembly. See Fig. 1. � Pull wire through cover plate, if used, and subbase wire opening. Secure the cover plate and subbase with the two screws provided, but do not tighten down. � Level the subbase using a spirit level. See Fig. 2. Tighten subbase mounting screws. The subbase mounting slots provide for minor out-of-level adjustments. CAUTION � � � � � Disconnect power supply to prevent electrical shock or equipment damage. Run wires as close as possible to the subbase. To prevent interference with the thermostat linkage, keep wire length to a minimum. Push excess wire back into the hole, and plug hole to prevent drafts from affecting thermostat operation. Do not overtighten thermostat captive mounting screws because damage to subbase threads can result. Do not short across coil terminals on relay. This may burn out the heat anticipator. Never install more than one wire per terminal unless factory-supplied jumper with spade terminal is used. IMPORTANT An incorrectly leveled subbase will cause the temperature control to deviate from setpoint � Connect the system wires to the subbase. See Fig. 4-7. A letter is stamped near each terminal for identification. The terminal barrier permits straight or conventional wraparound wiring connections. See Fig. 3. Either method is acceptable. Run wires as close as possible to the subbase, keeping wire length to a minimum. Push excess wire back into hole. Plug hole to prevent drafts. IMPORTANT Thermostats are calibrated at the factory by using subbases mounted at true level. Inaccurate subbase leveling will cause thermostat control deviation. Mounting the Thermostat � Remove the thermostat cover by pulling the bottom edge of the cover away from the base until it snaps free of the retaining posts. NOTE: The cover is hinged at the top and must be removed by pulling out at the bottom. Location Install the thermostat about 5 ft (1.5m) above the floor in an area with good air circulation at average room temperatures. � Carefully remove and discard the polystyrene packing insert that protects the mercury switches during shipment. � Turn the thermostat over and locate the spring fingers that engage the subbase contacts. Make sure the spring fingers are NOT bent flat, preventing proper electrical contact with the subbase. � Set adjustable heat anticipator indicators, if provided, as described in Setting the Heat Anticipator(s) section. Do not mount the thermostat where it may be affected by: — drafts, or dead spots (no air movement) behind doors, in corners, and above or below shelves. — hot or cold air from ducts. — radiant heat from the sun, lights, or appliances. — concealed pipes and chimneys. — unheated or uncooled areas such as an outside wall behind the thermostat. 69-0920 2 Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE VERTICAL OUTLET 1 BOX MOUNTING SCREWS (2) � Note the tabs along the top inside edge of the thermostat base. The tabs fit into the subbase notches. Mount the thermostat on the subbase and tighten the captive mounting screws. See Fig. 1. Do 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 retaining posts on base. Tighten the locking cover screws if assembly is provided. COVER PLATE 2 ADAPTER RING 2 1 HORIZONTAL OUTLET BOX SETTING Setting the 2nd Stage (Y594G1666 and Y594G1674 Only) Heat Anticipator Set the adjustable heat anticipator to match its primary control current draw. If the primary control nameplate has no rating or if further adjustment is necessary, use the following procedure to measure the current draw of each stage: � Remove thermostat from the subbase. Make sure the power is on. � Connect an ac ammeter of appropriate range between the heating terminals of the subbase: Stage 2: between W2 and R. � Move the system switch to HEAT or ON. � After one minute, read the ammeter and record the reading. � Remount the thermostat and use a ballpoint pen to set the adjustable heat anticipator(s) to match the reading(s) measured in step 4. See Fig. 8. THERMOSTAT THERMOSTAT COVER OL CO 80 70 60 50 SUBBASE 80 70 60 T HEA 50 SUBBASE MOUNTING SCREWS (2) 80 70 60 CAPTIVE MOUNTING SCREWS (2) 50 1 NOT INCLUDED WITH UNIT. 2 ACCESSORY PARTS AVAILABLE (193121A). M6009 Fig. 1. Installation of subbases and thermostat on outlet box. SPIRIT LEVEL TOP MOUNTING HOLES (2) Temperature Setting Move the heating and cooling levers to the desired positions. The minimum differential between heating and cooling setpoints is 3°F (2°C). Some thermostat models have nonadjustable lever stops, which set the maximum heating control point at 68°F or 72°F (20°C or 22°C) and the minimum cooling control point at 78°F (26°C). Do not attempt to exceed these limits. Some models have only one lever for heating and cooling. THERMOSTAT CABLE OPENING WIRING TERMINAL Subbase Setting POST (2) FOR MOUNTING THERMOSTAT MOUNTING HOLES (2) Available subbase system switch positions vary by thermostat model. Positions control thermostat operation as follows: OFF: Heating and cooling systems are off. If the fan switch is at the AUTO position, the fan is also off. HEAT: Heating system is controlled by the thermostat. Cooling system is off. COOL: Cooling system is controlled by the thermostat. Heating system is off. ON: Thermostat automatically switches between heat and cool modes, depending on the indoor temperature. SUPL. HT.: Supplemental heat is energized. Cooling system is off. Compressor cannot operate. TO SPRING FINGER CONTACTS ON THE THERMOSTAT (UP TO 12) M927 Fig. 2. Leveling the subbase. FOR STRAIGHT INSERTION– STRIP 5/16 in. (8 mm) FOR WRAPAROUND– STRIP 7/16 in. (11 mm) Fan switching positions control fan operation as follows: ON: Fan operates continuously. AUTO: Fan operates with heat pump and supplemental heat as controlled by the thermostat. BARRIER SUBBASE TERMINAL SCREW M928 Fig. 3. Wiring connections. 3 69-0920 Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE ON R FAN CO 10 8 12 C1 Y 11 9 OFF G AUTO O ON CO STAGE SUPL. HEAT P SUPL. HEAT E H1 3 2 L ON C 4 H2 6 W2 5 ON X SUPL. HEAT FIELD WIRING CONNECTION DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT THERMOSTAT SYSTEM COMPONENTS SUBBASE L1 L2 (HOT) 1 R FAN SWITCH FALL COMPRESSOR CONTACTOR Y H1 AUTO 2 G ON FAN RELAY 3 W2 HEAT RELAY 1 H1 ANTICIPATOR OUTDOOR THERMOSTAT 4 H2 ANTICIPATOR SUPL. HT. LED (RED) L 5 HEAT RELAY CONTACT 1 H2 FALL HEAT RELAY 2 C 6 E 8 RISE HEAT RELAY CONTACT 2 9 SYSTEM SWITCH X C1 ANTICIPATOR CO "P" RELAY SUPL. HT. 10 HEAT RELAY 3 "X" RELAY P ON CO COOL CHANGEOVER VALVE OFF RISE C1 11 12 O 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M4563 Fig. 4. Y594J1019 Thermostat/Subbase switching and internal connections. 69-0920 4 Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE ON R FAN G AUTO C0 8 10 12 C1 Y COOL COOL 9 O OFF 11 C0 STAGE HEAT P SUPL. HEAT SUPL. HEAT E HEAT H1 2 L HEAT 3 C 4 H2 6 5 W2 HEAT X SUPL. HEAT FIELD WIRING CONNECTION DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT THERMOSTAT SYSTEM COMPONENTS SUBBASE L1 L2 (HOT) 1 FALL R FAN SWITCH H1 2 3 H1 ANTICIPATOR COMPRESSOR CONTACTOR Y AUTO G ON H2 ANTICIPATOR OUTDOOR THERMOSTAT SUPL. HT. LED (RED) 5 L H2 6 RISE 8 SYSTEM SWITCH 9 SUPL. HT. C1 ANTICIPATOR CO HEAT RELAY CONTACT 1 HEAT RELAY CONTACT 2 HEAT X OFF "X" RELAY "P" RELAY P RISE 11 O 12 1 HEAT RELAY 3 E COOL CO HEAT RELAY 2 C 10 C1 HEAT RELAY 1 W2 4 FALL FAN RELAY 2 COOL CHANGEOVER VALVE POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M4564 Fig. 5. Y594J1001 Thermostat/Subbase switching and internal connections. 5 69-0920 Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE ON R FAN G AUTO C1 OFF 8 9 CO 10 Y ON SUPL. HEAT O ON H1 4 1 2 ON E SUPL. HEAT H2 6 W2 L SUPL. HEAT C SUPL. HEAT FIELD WIRING CONNECTION DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE L1 1 (HOT) L2 O 1 H1 ANTICIPATOR FAN SWITCH AUTO G ON 2 FAN RELAY R H1 OUTDOOR THERMOSTAT FALL W2 4 EM. HT. RELAY 1 H2 6 EM. HT. RELAY EM. HT. RELAY 2 CONTACT 1 H2 ANTICIPATOR FALL SYSTEM SWITCH E 2 8 EM. HT. RELAY CONTACT 2 EM.HT. RELAY 3 CO L C1 ANTICIPATOR SUPL. HT. RISE 9 SUPL. HT. LED (RED) ON C COMPRESSOR CONTACTOR 1 OFF C1 RISE Y 10 1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 N.O. SWITCH – INSTALLER ADDED, TO LIGHT EM. HT. LED WHEN COMPRESSOR OPERATION IS NOT NORMAL. Fig. 6. Y594G1674 Thermostat/Subbase switching and internal connections. 69-0920 6 M4565 Y594 (MULTISTAGE THERMOSTAT SUBBASE) PACKAGE ON R FAN G AUTO C1 8 9 CO 10 Y COOL OFF HEAT SUPL. HEAT O HEAT H1 4 1 2 HEAT E SUPL. HEAT H2 6 W2 L SUPL. HEAT C SUPL. HEAT FIELD WIRING CONNECTION DENOTES CONNECTION POINT BETWEEN SUBBASE AND THERMOSTAT THERMOSTAT SUBBASE SYSTEM COMPONENTS COOL CHANGEOVER VALVE L1 1 (HOT) L2 O 1 H1 ANTICIPATOR FAN SWITCH AUTO G ON 2 FAN RELAY R H1 OUTDOOR THERMOSTAT FALL W2 4 HEAT RELAY 1 H2 6 HEAT RELAY CONTACT 1 H2 ANTICIPATOR FALL SYSTEM SWITCH HEAT RELAY 2 E 2 8 HEAT RELAY CONTACT 2 HEAT RELAY 3 SUPL. HT. 9 CO 10 C COMPRESSOR CONTACTOR 1 COOL Y C1 RISE 1 COMPRESSOR FAULT SUPL. HT. LED (RED) OFF C1 ANTICIPATOR RISE L HEAT POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 2 N.O. SWITCH – INSTALLER ADDED, TO LIGHT EM. HT. LED WHEN COMPRESSOR OPERATION IS NOT NORMAL. M4566 Fig. 7. Y594G1666 Thermostat/Subbase switching and internal connections. 7 69-0920 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 2 .1 0 Thermostat .1 .1 These thermostats are accurately calibrated at the factory. They do not have provision for field calibration. 5 .2 1.2 .8 .6 .4 .3 STAGE TWO ANTICIPATOR HEATING CONTROL MOVE INDICATOR TO MATCH CURRENT RATING OF PRIMARY CONTROL Thermometer The thermometer in your thermostat has been accurately calibrated at the factory. The thermometer should only adjustment if it has been dropped or shifted due to mishandling. M4550 Fig. 8. Adjustable heat anticipator shown. To switch positions, use thumb and index finger to slide lever to desired position. Switch lever must stop in detent directly over the desired function indicator mark for proper system operation. If the setpoint lever and the thermometer reading do not agree, use the following procedure: � Remove the thermostat cover by pulling up from the bottom edge of the cover away from the base until it snaps free of the cover clip. � Set the thermostat cover on a table near an accurate thermometer. � Allow ten minutes for cover thermometer to sense area temperature; compare the readings. Be careful not the touch the thermometer or breathe on it. � If the readings are the same, replace cover and put the system into operation. � If the readings are different, insert a small screwdriver in the thermometer slot and turn it until the thermometers have the same reading. See Fig. 9. � Replace thermostat cover and put the system into operation. CHECKOUT Heating Set the system switch on the subbase at HEAT or ON and the fan switch at AUTO. Move the heating lever on the thermostat about 10°F (6°C) above room temperature. Heating (both stages if two-stage thermostat) should start if there is no time delay or outdoor temperature limiting system, and the fan should come on. Move the heating lever about 10°F (6°C) below room temperature. Heating and fan should shut off. Cooling CAUTION Do not operate cooling if outdoor temperature is below 50°F (10°C). Refer to manufacturer recommendations. Set the system switch on the subbase to COOL or ON and the fan switch to AUTO. Move the cooling lever on the thermostat about 10°F (6°C) below room temperature. Cooling and fan should start. Move the cooling lever about 10°F (6°C) above room temperature. Cooling and fan should stop. Fan Set the fan switch to ON. Move the system switch to different positions; the fan should run continuously. Move the fan switch to AUTO. Move the system switch to different positions. Fan operation is controlled with the heating or cooling system. Home and Building Control Honeywell International, Inc. 1985 Douglas Drive North Golden Valley, MN 55422 69-0920 J.H. 5-95 M5070 Fig. 9. Thermometer calibration. Home and Building Control Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Scarborough, Ontario M1V 4Z9 8 www.honeywell.com/yourhome