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Manual Robertshaw 9420

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Summary
  • Robertshaw 9420 - page 1

    DIGIT AL NON-PROGRAMMABLE THERMOST A T 9420 HEA T PUMP H NeW 2 Heat / 2 Cool User's Manual Quick Start Installation Application The Robertshaw 9420 is a multi-stage thermostat designed to control 24 V AC heat pump systems. Features • Summer and winter setpoints •L arge back lit display • Adjustable 1 st stage temperature differential: 0. ...

  • Robertshaw 9420 - page 2

    IMPORT ANT SAFETY INFORMA TION W ARNING: • Always turn off power at main fuse or circuit breaker panel before installing, removing, cleaning, or servicing thermostat. • Read all the information in this manual before installing this thermostat. • This is a 24 V AC low-voltage thermostat. Do not install on voltages higher than 30 V AC. • All ...

  • Robertshaw 9420 - page 3

    Recycling Thermostat If this thermostat is replacing a thermostat that contains mercury in a sealed tube, do not place your old thermostat in the garbage. Contact your local waste management authority for instructions regarding proper disposal of the thermostat. If you have any ques- tions, call Robertshaw technical support at 1-800-445-8299. Step ...

  • Robertshaw 9420 - page 4

    5. Place thermostat against the wall at desired location. Make sure wires will feed through opening (Figure 4) on base of thermostat. 6. Mark placement of mounting holes (Figure 4). Set base aside. 7. If mounting on drywall, tap plastic anchors into wall. NOTE: ENCLOSED PLASTIC ANCHORS DO NOT REQUIRE A DRILLED HOLE FOR DRYW ALL. 8. If mounting on a ...

  • Robertshaw 9420 - page 5

    5 T yp ical heat p um p with cool active reversin g valve and auxiliar y /emer g enc y heat. T yp ical heat p um p with heat active reversin g valve and auxiliar y /emer g enc y heat. T yp ical heat p um p with cool active reversin g valve and auxiliar y /emer g enc y heat. Does not have se p arate wire for emer g enc y heat (j um p W2 & E ) . ...

  • Robertshaw 9420 - page 6

    15. Replace thermostat cover by snapping into place. 16. T urn on power to system. T est thermostat as described in the following section. Step 3: T esting the Thermostat W ARNING: DO NOT SHORT (JUMPER) ACROSS TERMINALS OF GAS V AL VE OR SYSTEM CONTROL TO TEST OPERA TION. THIS WILL DAMAGE THE THERMOST A T AND VOID YOUR WARRANTY . CAUTION: DO NOT SW ...

  • Robertshaw 9420 - page 7

    7 NOTE: ONCE THE THERMOST A T TURNS OFF , A BUIL T IN 5-MINUTE DELA Y PREVENTS THE SYSTEM FROM TURNING ON AGAIN. THIS PROTECTS THE COMPRESSOR. NO ADDITIONAL TIME DELA Y RELA Y IS REQUIRED. TO OVERRIDE THE 5-MINUTE DELA Y FOR INST ALLA TION, PRESS THE RESET BUTTON. 3. Put the EMER-HEA T -OFF-COOL switch into the OFF position. The air conditioning sy ...

  • Robertshaw 9420 - page 8

    Step 4: Customizing the Thermostat ◆ Settings System Cool: The thermostat controls the cooling. Off: The heating and cooling systems are off. Heat: The thermostat controls the heat. Emer: The thermostat controls the second stage emergency heat. Used only when the primary stage of heat is not functioning or requires service. The display shows EMER ...

  • Robertshaw 9420 - page 9

    9 ◆ T emperature Differential 2 nd Stage Delay The temperature differential is factory set at 1.0°F (.5°C) for the 1st stage differential and 2°F (1°C) for the 2nd stage. This means that whenever the room temperature changes by one degree Fahrenheit from the tempera- ture setting, the system will turn on. If the system turns on too often, inc ...

  • Robertshaw 9420 - page 10

    10 WIRING OPENING Reset Switch ◆ Reset To reset the thermostat press the RESET button located just below the lower left corner of the display . Step 5: T r oubleshooting Symptom Remedy Display shows CHECK Monitors system status. Call your local HV AC service provider . Check F/C (Fahrenheit/Celsius) setting. See Changing Fahrenheit (F) to Celsius ...

  • Robertshaw 9420 - page 11

    T wo Y ear Limited Warranty Climate Controls Americas warrants to the original contractor installer , or to the original consumer user , each new Robertshaw thermo- stat to be free from defects in materials and workmanship under normal use and service for a period of two (2) years from date of purchase. This warranty and our liability does not appl ...

  • Robertshaw 9420 - page 12

    NOTES 12 ...

Manufacturer Robertshaw Category Musical Table

Documents that we receive from a manufacturer of a Robertshaw 9420 can be divided into several groups. They are, among others:
- Robertshaw technical drawings
- 9420 manuals
- Robertshaw product data sheets
- information booklets
- or energy labels Robertshaw 9420
All of them are important, but the most important information from the point of view of use of the device are in the user manual Robertshaw 9420.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Robertshaw 9420, service manual, brief instructions and user manuals Robertshaw 9420. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Robertshaw 9420.

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A complete manual for the device Robertshaw 9420, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Robertshaw 9420 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Robertshaw 9420.

A complete Robertshaw manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Robertshaw 9420 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Robertshaw 9420, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Robertshaw 9420, that we can find in the current document
3. Tips how to use the basic functions of the device Robertshaw 9420 - which should help us in our first steps of using Robertshaw 9420
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Robertshaw 9420
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Robertshaw 9420 in a specific country, if it was not possible to solve the problem on our own.

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