Coleman 9420-381 Digital Wall Thermostat Instruction Manual

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INSTALLATION, OPERATION & APPLICATION GUIDE FOR DIGITAL WALL  

THERMOSTAT 9420*381 & 9420*382  

Features  

The thermostat wiring is factory installed  

by the OEM (Original Equipment  

Manufacturer). RV Products suggests the  

thermostat wiring be a minimum of 20  

gauge. The thermostat is intended for use  

with a 12 VDC control circuit that does not  

exceed 2 amps.  

The thermostat is equipped with a self-  

reseꢁng PTC fuse located in the  

thermostat. The fuse is designed to “open”  

if the circuit is mis-wired or if there is a  

short in the system.  

If the PTC fuse conꢀnues to “open”, the  

fault must be located and corrected.  

The thermostat includes a mounꢀng plate,  

2 screws and 2 wall anchors.  

An oversized accessory wall plate  

(9420*3501) is available for purchase if  

needed.  

Thermostat and Room Temperature  

Sensor Locaꢀon  

WARNING!  

• An internal temperature sensor on the  

thermostat can act as the room sensor.  

• Alternaꢀvely, a remote temperature  

sensor can be connected to the  

thermostat to the SENS connectors. The  

thermostat will show “REMOTE” at the  

top of the display. This situaꢀon would  

allow the thermostat to be located  

virtually anywhere in the coach, as long  

as the user can access the thermostat to  

operate it.  

This appliance is not intended for use by  

young children or infirm persons unless they  

have been adequately supervised by a  

responsible person to ensure they can use the  

appliance safely.  

CAUTION!  

This thermostat should be installed by trained  

technicians only. Adhere to all local and  

naꢀonal codes and ordinances.  

DISCONNECT ALL POWER TO THE SYSTEM  

BEFORE INSTALLING, REMOVING, OR  

CLEANING.  

The Remote Room Sensors available are  

8330-5191 (white) and 8330-3101  

(black).  

1980R189 (08-24-23)  

VIEW FULL SCREEN PDF MANUAL

General	Details
Name	Coleman 9420-381 Digital Wall Thermostat Instruction Manual
Make	Coleman
Language	English
Filetype	PDF (Download)
File size	0.19 MB

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• ALL THERMOSTAT INSTRUCTIONS & USER MANUALS
• Coleman

Coleman 9420-381 Digital Wall Thermostat Instruction Manual Overview

Summary of Contents

• Page 1: Installation, operation & application guide for digital wall thermostat 9420*381 & 9420*382. The thermostat wiring is factory installed by the OEM. The thermostat is intended for use with a 12 VDC control circuit that does not exceed 2 amps. The thermostat is equipped with a self-resetting PTC fuse located in the thermostat. If the PTC fuse continues to “open”, the fault must be located and corrected. The thermostat includes a mounting plate, screws, and wall anchors. An internal temperature sensor on the thermostat can act as the room sensor. A remote temperature sensor can be connected to the thermostat to the SENS connectors. This appliance is not intended for use by young children or infirm persons unless supervised. This thermostat should be installed by trained technicians only. Disconnect all power to the system before installing, removing, or cleaning.
• Page 2: Installation A mounting plate should be affixed to the wall using two screws, with wall anchors included if needed. Electrical shock hazard: Turn off power at the main service panel before removing the existing thermostat. Wire the thermostat to the motorcoach, referring to the Wire Labeling and Connectors section for guidance. The thermostat is a sensitive electronic instrument; accurate temperature control requires careful placement. Locate the thermostat on an inside wall about five feet above the floor in a dry area with good air circulation. Avoid installing the thermostat in areas with unusual heating conditions, such as direct sunlight or near heat-producing appliances. The thermostat must be installed in a vertical position. Place the thermostat on the mounting plate and gently slide it down to lock it in place. Turn on the power to the thermostat after installation. Refer to the operation guide for thermostat display information and operation instructions.
• Page 3: Wire labeling and connectors The labeling of the inputs/outputs of the thermostat can be found on the rear of the thermostat. Refer to the table below for labels and definitions. WHP connection for electric heat output is used for heat pump or the strip heat accessory for the A/C. The connectors of the thermostat can accept 20 AWG solid wire. To insert a wire, strip the wire to the appropriate length (5/16”). Lightly tug on the wire to ensure the connection is solid. To remove a wire, press down on the connector’s tab with a screwdriver and pull wire vertically. It is recommended to use the same gauge wire in that position or a larger gauge wire. Reference illustration below for connectors. The wires must be spliced (or terminated) following the electrical code and using good workmanship practices.
• Page 4: Dip switches HVAC mode and fan mode selection Upon powering up the thermostat, the display will show the HVAC mode set to ‘Off’ and the fan mode set to ‘Off’. The dip switches will enable/disable certain functions of the thermostat. To apply any changes to the dip switches after initial installation, the device must be rebooted. Refer to the table below for the dip switch descriptions. To set the HVAC mode, press the knob; the display will show the HVAC mode section with the currently selected mode blinking. The display will show HVAC mode and state, the current temperature, temperature units, the sensor in use, the set point temperature, and the fan mode and state. The dip switches can be accessed from the rear of the thermostat when the back plate is not attached. Dip switches must be properly set for the equipment installed on the vehicle for the thermostat functions to work as intended.
• Page 5: Operation guide for digital wall thermostat 9420*381 & 9420*382 The thermostat screen has a black background with a white LCD display. A rotary knob is used to switch between selections and temperature settings. The knob features a push button to select the desired setting. This appliance is not intended for use by young children or infirm persons unless they have been adequately supervised by a responsible person.
• Page 6: Thermostat display provides information about the HVAC operation mode selected by the user. The fan state indicates when the fan is operating. Fan mode shows the user-selected fan speed. The knob indicates when the thermostat is controlled by a remote sensor. Current temperature reflects the room temperature where the sensor is located. Rotating the knob clockwise increases the temperature setting, while counterclockwise decreases it. Pressing the knob accepts any changes made to the temperature setting. Temperature units can be displayed in Fahrenheit or Celsius. HVAC state shows the type of A/C or heat currently operating. To adjust the set point, the thermostat must be in an HVAC mode other than 'Off'.
• Page 7: Temperature unit change allows the thermostat to display temperature in either Fahrenheit or Celsius. To change the temperature units, press and hold the knob until the display changes. The thermostat has a 15-minute timer that prevents the opposite HVAC mode from operating if the set temperature and room temperature remain within 2° F. In electric heating mode, if the temperature reaches 5° F below the set point, gas heat will turn on to assist electric heat. Electric heat can receive strikes if it requires assistance from gas heat, and it will be disabled for 1 hour and 45 minutes after three strikes. Some settings will be retained when power is lost, including set points for cool, heat, electric heat, and gas heat. Settings are stored automatically upon any changes made to set points or temperature units. A 3-minute delay will be initiated for both the compressor and electric heat outputs after demand is satisfied to protect against short cycling. The HVAC outputs are disabled in off mode, while the compressor and selected fan speed operate in cool mode. In heating mode, the system can utilize electric heat, gas heat, and fan as needed.
• Page 8: Sleep mode is activated automatically 10 seconds after the last user interaction. In sleep mode, the LCD will dim, and power usage will drop. The first user interaction will wake up the device and brighten the display. The thermostat can be manually rebooted by pressing and holding the knob for 12 seconds. If the user was changing any setting and the knob was not pressed to accept the current selection, the thermostat will auto accept the current selection after 7 seconds and apply any changes. Temperature range for cooling and heating is from 33° F to 99° F and 1° C to 37° C. If the current temperature is below 33° F, the display will show “LO” and if the temperature is above 99° F, the display will show “HI”.