Sunlife Enterprises DM180, DM300, DM240 installation manual GAS Valve

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356214-XIM-A-0108

If the temperature limit opens three times within one hour, it will lock-on the indoor blower motor and a flash code is initiated (See Table 24).

GAS VALVE

The UCB continuously monitors the GV. Any time the UCB senses voltage at the GV without a call for heat for a continuous five-minute period, the UCB will lock- on the indoor blower and a flash code is initiated (Table 24). When voltage is no longer sensed at the GV, the UCB will de-energize the indoor blower follow- ing the elapse of the fan off delay for heating.

If voltage has been sensed at the GV for at least 15 seconds during the fan on delay for heating and GV voltage or "W1" is lost, the indoor blower is forced on for the length of the fan off delay for heating.

SAFETY CONTROLS

The unit control board monitors the temperature limit switch and the gas valve of gas furnace units.

The control circuit includes the following safety con- trols:

1.Limit Control (LS).

This control is located inside the heat exchanger compartment and is set to open at the temperature indicated in the Limit Control Setting Table 21. It resets automatically. The limit switch operates when a high temperature condition, caused by inadequate supply air flow occurs, thus shutting down the ignition control and closing the main gas valves and energizing the blower.

2.Centrifugal Switch (CS).

If the draft motor should fail, the centrifugal switch attached to the shaft of the motor prevents the igni- tion controls and gas valves from being energized.

3.Redundant Gas Valve.

There are two separate gas valves in the furnace. Each valve contains a main and a redundant valve.

The redundant valves are located upstream of the main gas valves. Should either or both of the main gas valves fail in the open position the redundant valves serve as back-ups and shut off the flow of gas.

4.Flame Sensor Rod / 100% Ignition Control Lock- Out.

The flame rods and controls are located per Proper Flame Adjustment Figure 22. If an ignition control fails to detect a signal from the flame sensor indi- cating the pilot flame is properly ignited, then the main gas valve will not open. It will continue to try and ignite the pilot for a maximum of 85 seconds, then if the pilot flame is not detected, the ignition control will lock out furnace operation until 24V power is removed from the module either at the unit or by resetting the room thermostat.

5.Rollout Switch.

This switch is located above the main burners in the control compartment, which in the event of a sustained main burner rollout shuts off and locks out both ignition controls closing both gas valves. The ignition controls lock out furnace operation until 24V power is removed from the controls either at the unit or by resetting the room thermostat.

NOTE: The auto reset rollout switch must reset before allowing furnace operation.

6.Auxiliary limit switch (AUX) -

This control is located inside the heat exchanger compartment and is set to open at 190°F. It is a manual reset switch. If AUX trips, then the primary limit has not functioned correctly. Replace the pri- mary limit.

TABLE 21: LIMIT CONTROL SETTING

Units

Capacity, MBH

Limit Control

 

 

(Tons)

 

 

Opens, ºF

Input

Output

 

 

 

 

 

 

15, 20 & 25

300

240

195

 

 

 

 

15, 20 & 25

350

280

195

 

 

 

 

Johnson Controls Unitary Products

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Contents Installation Table of Contents List of Tables List of FiguresGeneral Safety ConsiderationsInspection ReferenceApprovals Renewal PartsTon Sunline & Magnum & MagnaDRY Model Number Nomenclature Product NomenclatureLimitations InstallationInstallation Safety Information Location Unit Application DataClearances Rigging and HandlingFixed Outdoor AIR Intake Damper DuctworkFilters Service AccessField Wiring DM ELECTRIC/ELECTRIC and GAS/ Electric Units Control Wire Sizes Power and Control WiringThermostat Electric Heat Application Data Optional Electric HeatGAS Heat Application Data Optional GAS HeatGAS Piping Pipe SizingExternal Supply Connection External SHUT-OFF Vent and Combustion AIR Hood Vent and Combustion AIR HoodsOptional Power EXHAUST/BAROMETRIC Relief Damper Rain Hood Enthalpy Setpoint Adjustment Four and SIX Point Loads Models Physical DataSize DM Electrical Data -WITHOUT Powered Convenience OutletDM Electrical Data -WITH Powered Convenience Outlet Front View Rear View Dimensions Unit Clearances and Rain Hood Dimensions 15, 20 & 25 TON AIR Temp Altitude Meter Altitude Correction FactorsALTITUDE/TEMPERATURE Conversion Factor High Static Drive CFM 80 m3/s 30 m3/s 10 m3/s 40 m3/s 1030 378 321 258 199 134 1070 417 361 299 240 XIM-A-0108 DM300 Unit Downflow Duct Connections CFM Blower Motor and Drive Data Power Exhaust PerformanceStatic RESISTANCES1 Checking AIR Supply CFM PhasingDrop Pressure Nominal CFM Thousands Supply AIR IWGCooling Sequence of Operation OperationSequence of Operations Overview LOW-PRESSURE Limit Switch Reset Safety ControlsCompressor Protection Flash CodesLimit Control Setting Heating Operation ErrorsHeat Anticipator Setpoints Electric Heat Anticipator SetpointsGAS Valve Piping GAS Heating Operation ErrorsGAS Valve START-UP Cooling Shut Down START-UP GAS HeatPRE-START Check List POST-START Check List GASBurner AIR Shutter Adjustment Manifold GAS Pressure AdjustmentBurner Instructions Checking GAS InputAdjustment of Temperature Rise TroubleshootingCooling Troubleshooting Guide GAS Rate Cubic Feet PER HourXIM-A-0108 XIM-A-0108 XIM-A-0108 XIM-A-0108 GAS Heat Troubleshooting Guide XIM-A-0108 Unit Flash Codes Unit Control Board Unit Control Board Flash CodesOption Byte Setup Unit Control Board Option SetupXIM-A-0108 Johnson Controls Unitary Products Johnson Controls Unitary Products York Drive Norman, OK

DM300, DM240, DM180 specifications

Sunlife Enterprises has made significant strides in the competitive market of digital management tools with their innovative lineup of products: the DM240, DM300, and DM180. Each of these devices has been engineered to cater to specific operational needs while sharing a common foundation of advanced technology, versatility, and user-centric design.

The DM240 is an entry-level model that caters to small businesses looking for an efficient digital management solution without the hefty price tag. With a compact design and intuitive user interface, the DM240 allows for seamless integration into various work environments. Key features include a high-resolution touchscreen display, which facilitates easy navigation and quick access to essential functions. The device supports wireless connectivity options, ensuring users can manage tasks from anywhere within their operating environment. The energy-efficient design of the DM240 also promotes sustainability without compromising performance.

Moving up the line, the DM300 offers enhanced capabilities for medium-sized enterprises. This model is powered by advanced processing technology, allowing for faster data handling and superior multitasking. The DM300 features expanded memory and storage options, ensuring that users can manage larger datasets effortlessly. Additionally, with built-in advanced security features like biometric authentication and encrypted data storage, businesses can ensure that sensitive information remains protected. The intuitive software interface of the DM300 is designed for ease of use while providing advanced analytics tools to enable users to make data-driven decisions.

At the top of the range is the DM180, a sophisticated solution tailored to large organizations with complex digital management needs. The DM180 showcases a state-of-the-art design with high-performance computing capabilities. It features an expansive multi-touch display, allowing multiple users to interact simultaneously, facilitating collaboration and teamwork. The DM180 is equipped with cloud integration options, promoting real-time data access and sharing among teams, regardless of location. Its scalability ensures that businesses can adapt the system to accommodate growth without compromising functionality. Moreover, it offers comprehensive reporting and analytics tools, empowering organizations to gain valuable insights into their operations.

In summary, Sunlife Enterprises’ DM240, DM300, and DM180 models stand out for their unique features designed to meet the evolving needs of businesses. With a focus on user experience, performance, and security, these devices are poised to help organizations enhance productivity and drive innovation in the digital management landscape.
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