Installer`s Guide ZZSENSAL0400AA
Contents
1. 18 HD31D1 1 ZZSENSALO400AA Remote Indoor Temperature Sensor Use with CONT402 Comfort Controls ALL phases of this installation must comply with NATIONAL STATE AND LOCAL CODES APPLICATION This Wall Mount Temperature Sensor is used with the CONT402 Comfort Control SPECIFICATIONS Operating Ambient Temperature Range 20 to 120 F 6 7 to 48 9 C Display Range 20 to 120 F 6 7 to 48 9 C Sensor Accuracy 5 F at 75 F Operating Relative Humidity 5 to 90 non condensing Finish White Dimensions in in mm 1 54 39 wide x 1 93 49 high x 745 19 deep Storage Temperature 40 to 140 F 40 to 60 C INSTALLATION When Installing this Product 1 Read these instructions carefully Failure to follow them could damage the product or cause a hazardous condi tion to Check the ratings given in the instructions and on the product to make sure the product is suitable for your application A CAUTION Disconnect power supply before connecting wiring Failure to do so may cause equipment damage 3 Installer must be a trained experienced service techni cian 4 After installation is complete check out product opera tion as provided in these instructions Location and Mounting Fig 2 A CAUTION If the Remote Indoor Temperature Sensor fails control reverts to the on board temperature sensor Therefore the Comfort Control must be installed in the conditione2. REMOTE SENSOR IS REQUIRED REFER TO FIGURE 5 SINGLE A 402 Wiring a single Sensor Pub No 18 HD31D1 1 TARAA WADA Pe Sensor subbase and cover SENSORS MUST BE ARRANGED IN THIS CONFIGURATION TO OPERATE CORRECTLY MULTIPLE A 402 Wiring Multiple Sensors Pub No 18 HD31D1 1 Installers Guide COOL HEAT AUTO OFF ROOM o Room Temperature Reading on CONT402 Comfort Control OPERATION Once installed and the Comfort Control Installer Setup is complete the remote inside temperature is displayed on the Comfort Control Home Screen as the Room Temperature See Fig 6 The Remote Indoor Temperature Sensor converts room temperature to a resistance that the Comfort Control can interpret The Sensor has a negative temperature coefficient NTC which means that resistance decreases as the temperature increases See Table 1 The Sensor can be used to provide one remote input see Fig 3 or as a temperature averaging network with multiple Sensors connected as shown in Fig 5 CHECKOUT For best results leave the Remote Indoor Temperature Sensor at a stable room ambient for a minimum of twenty minutes before taking a resistance measurement With an accurate thermometer 1 F 0 5 C measure the temperature at the sensor location allowing time for the thermometer to stabilize before reading To verify sensor resistance remove one wire from one of the Sensor w
3. and level the subbase on the wall with the thermo stat wire protruding through the wiring opening hole of the subbase Slide the subbase a short distance up the wall until the thermostat wire rests against the bottom Installers Guide 5 FEET 1 5 METERS M4476 A Typical location for ZZSENSALO400AA Sensor edge of the wire opening hole in the subbase adjacent to the top edge of the printed circuit board and wiring connector This should result in a sufficient amount of wall material left between the top mounting and wiring opening holes 8 Use a pencil to mark both mounting holes Remove the subbase from the wall and drill two holes in the wall for mounting Gently tap anchors provided into the drilled mounting holes until flush with the wall 9 Position and level the subbase on the wall with the thermostat wire through the wiring opening hole of the subbase and with the mounting holes aligned with the two anchors Mount the subbase on the wall using the provided mounting screws Wiring Fig 3 4 5 Electrical Interference Noise Hazard Can cause erratic system operation Keep wiring at least one foot away from large inductive loads such as motors line starters lighting ballasts and large power distribution panels IMPORTANT Erratic temperature readings from a sensor can occur as a result of any of the wiring practices described below Avoid these practices to assure correct operation Do not route t
4. d space 1 Choose a location for mounting the Sensor on an inside wall about 5 ft 1 5m above the floor 2 Be sure cable distance between the Sensor and the Comfort Control is less than 200 feet Fig 1 ZZSENSALO400AA Sensor 3 Make sure there is good air circulation at average temperature at the chosen location Avoid the following locations because they can introduce errors in sensor measurements See Fig 2 a Hot areas caused by i Concealed pipes or ducts Gi Drafts from fireplaces or other heat sources iii Convection or radiant heat from the sun or electrical equipment b Cold areas caused by i Concealed pipes or ducts Gi Drafts from windows and doors iii Unheated areas on the other side of the wall location c Dead air areas G Behind doors furniture and curtains ii In corners and alcoves 4 Remove remote indoor sensor cover by grasping the cover at the top and the bottom and gently pulling it straight off the subbase Position and level the subbase for appear ance only Device functions correctly even when not level 5 Use a pencil to mark the wiring opening hole Remove the subbase from the wall and drill one hole in the wall for the wiring opening 6 Run wire cable to the wiring opening hole at the selected wall location Pull approximately three inches of wire through the wiring opening in the wall 18 gauge thermo stat wire is recommended 7 Position
5. emperature sensor wiring with building power wiring next to control contactors or near light dimming circuits electric motors or welding equipment Avoid poor wiring connections Avoid intermittent or missing building earth ground A CAUTION Disconnect power supply before connecting wiring Failure to do so may cause equipment damage 2 2005 American Standard Inc All Rights Reserved Wiring must comply with applicable codes ordinances and regulations 1 Strip 1 4 in of insulation off two wires Bend the bare wire downward 90 degrees to easily insert into the terminal block 2 Loosen terminal block screws Insert two wires into the terminal block 3 Securely tighten each terminal block screw Push excess wire back into the hole 5 Plug the hole with nonflammable insulation to prevent drafts from affecting the remote indoor sensor 6 Install the remote indoor sensor cover onto the subbase by gently pressing the cover over the subbase until the tabs snap into place SENSOR e Outdoor Temp Remote Indoor Sensor Outdoor Temp Remote Indoor Sensor w A T je T N Zle 3S a Z je N Z COOLING 1st S lt 24VAC common VS MODE fan 2 v pa e z a fe fe Oo HEATING 3rd 24VAC HOT HEATING 2nd HEATING 1st Humidistat Humidistat IF MORE THAN ONE
6. iring terminals Use an ohmmeter to measure the resistance across the sensor Then verify the sensor accuracy with the temperature resistance in Table 1 on page 4 Reinstall the removed wire TROUBLESHOOTING If the remote indoor temperature sensor fails control reverts to the on board temperature sensor Therefore the comfort control must be installed in the conditioned space CALIBRATION Table 1 Sensor Resistance at Room Temperature The Remote Indoor Temperature Sensor is calibrated at the factory and cannot be recalibrated in the field ROOM TEMPERATURE OHMS OF RESISTANCE Ce f a f e o C e o o e o f e o e e o i C e e G o o Oo The Remote Indoor Temperature Sensor response can be calibrated at the Comfort Control See the Installer s Guide or User s Manual for details a a Oo oD sw n n pn Nn O F o e Oo e L NP OP oayTsA alINiIo aA American Standard Inc 6200 Troup Highway Tyler TX 75707 For more information contact Since the manufacturer has a policy of continuous product and product data improvement it reserves the right to your local dealer distributor change design and specifications without notice
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