Features
Features A421 Standard model
Control Front Panel LCD:
Displays the temperature, parameters, and status and allows you to adjust the backlight intensity for ambient light conditions. Custom icons display the system and control status.
Basic and Advanced Programming Menu:
Provides two levels of parameter adjustment and control setup, allowing you to set up advanced features in one menu and easily adjust basic parameters in the other menu.
On/Off Temperature Adjustment:
Allows you to select the temperature values at which the relay turns On and Off, which automatically defines the Heating or Cooling mode of operation.
Switch-Activated Temperature Setback:
Allows you to shift the On/Off temperature by an adjustable setback value. When a user-supplied switch closes the binary input control circuit, the control operates at the defined setback temperatures.
Adjustable Anti-Short Cycle Delay:
Allows you to select the minimum time the output relay remains off before the next on cycle; avoiding short cycling, hard starts, and nuisance overload outages on compressors and other inductive applications.
Adjustable Sensor Offset:
Allows you to adjust the displayed temperature to the actual sensed temperature.
Optional Restricted Adjustment Mode:
Allows you to restrict the On/Off adjustment to your defined temperature range.
Sensor Failure Mode:
Allows you to select the relay On/Off state in the event of a sensor or sensor wire failure.
Backlight Brightness Level:
Allows you to adjust the LCD backlight intensity.
Extra Features A421 Defrost model
Off-Cycle Defrost:
Allows you to shut off the refrigeration system for defined defrost time interval and frequency. You can also start or stop a manual only defrost offcycle.
Extra Features A421 Timer model
Free-Cooling and Ventilation:
Allows you to adjust for free-cooling and timed-ventilation, and provides over-cooling protection.

-30/100F, DIFF 3 - 12 ADJ, 8' CAP, SPDT, NEMA 13/8 X 4 BULB

These thermostats are available with fixed or adjustable differential.
The various control ranges cover a broad range of temperature applications with a minimum number of models.
On request a built-in high or low limit stop is possible and can be adjusted quickly and easily in the field.
All models have a universal way of adjustment.
For this purpose a knob and sealing cap are enclosed.
All are equiped with IP30 enclosure

DIFF 3-12 ADJ,6' CAP, SPST, NEMA 1,3/8 X 4 BULB, OPEN LOW

These thermostats are available with fixed or adjustable differential.
The various control ranges cover a broad range of temperature applications with a minimum number of models.
On request a built-in high or low limit stop is possible and can be adjusted quickly and easily in the field.
All models have a universal way of adjustment.
For this purpose a knob and sealing cap are enclosed.
All are equiped with IP30 enclosure.

The Ranco® ETC Series Electronic Temperature Control offers a full-featured electronic replacement for electrical-mechanical temperature controls used in many commercial refrigeration applications. With its wide temperature range, one and two stage capability, selectable heating/cooling modes and multi-voltage input, the ETC is designed to provide application flexibility. Models available include 120/208/240V AC and 24V AC.

Features and Benefits

Anti-short cycle compressor delay for cooling applications
Wide temperature range (-30°F to 220°F) (-34.4°C to 104.4°C)
Wide differential adjustment (1°F to 30°F) (-17°C to -1°C)
LCD read-out for sensor temperature, control settings, and relay status
High Amp output relay (FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC) single stage
EEPROM memory retains control settings during power outages
Keypad lockout to prevent end-user alteration of settings
8 foot lead with sensor is extendable up to 400 feet using 18 or 22-gauge thermostat wire
Easy 4-step set-up
Heavy-duty relay is 1 HP rated
Selectable °F or °C heating/cooling modes
Single and two stage models
NEMA 1 case and cover
NEMA 4X models available
White backlight on display
Sensor rated IP67 for dust and water (<1m) resistance

Robertshaw® IgnitorPro™ Universal Ignitors are a durable and versatile product contractors can keep on
hand to ensure quick, reliable repairs. These ignitors include all mounting brackets and hardware.

Versatile:
- Replace more than 150 ignitors from leading OEMs
- The perfect truck stock items-minimal inventory
- Round and flat blade designs available
Easy to install: Include all mounting brackets and hardware
Reliable: Constructed with silicon nitride, the new industry standard for durability
- Fewer callbacks
- More repeat business for new installations and preventive maintenance

The Ranco® ETC Series Electronic Temperature Control offers a full-featured electronic replacement for electrical-mechanical temperature controls used in many commercial refrigeration applications. With its wide temperature range, one and two stage capability, selectable heating/cooling modes and multi-voltage input, the ETC is designed to provide application flexibility.

Features and Benefits

Anti-short cycle compressor delay for cooling applications
Wide temperature range (-30°F to 220°F) (-34.4°C to 104.4°C)
Wide differential adjustment (1°F to 30°F)
LCD read-out for sensor temperature, control settings, and relay status
High Amp output relay (FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC) single stage
EEPROM memory retains control settings during power outages
Keypad lockout to prevent end-user alteration of settings
8 foot lead with sensor is extendable up to 400 feet using 18 or 22-gauge thermostat wire
Easy 4-step set-up
Heavy-duty relay is 1 HP rated
Selectable °F or °C heating/cooling modes
Single and two stage models
NEMA 1 case and cover
NEMA 4X models available
White backlight on display
Sensor rated IP67 for dust and water (<1m) resistance

The Robertshaw® 1820 Series Pilot Uni-Kit® models are designed to replace hard-to-find ITT-General PG9 type pilots. A special 1/4” tubing adaptor is typically provided with nut and ball sleeve. Uni-Kits are available with and without a 32” (810mm) thermopile.

Features and Benefits

Many flame pattern types available
Thermocouple or thermopile options
Spark electrode available
Horizontal or vertical gas inlet
Several mounting bracket types available
Aerated pilots with non-linting characteristics

Universal round Silicon Nitride igniter kit. Includes brackets and hardware to replace hundreds of OEM furnace and boiler igniters

Features/Benefits

18 gauge copper high temperature fiberglass insulated lead wires
Faster time to temperature response
Higher resistance to oxidation
Lower power consumption
Measures Approximately 12 3/4 inches in diameter.
See Cross Reference tab for additional numbers
Stronger more durable design
Superior gas lighting ability

The 1830 Series Pilot Uni-Kit® models are designed to be used with all Robertshaw® and most competitive thermocouples. Uni-Kit models include an adaptor that converts a threaded thermocouple/thermopile model 2CH to a snap-in thermocouple type, model 2C.

Features and Benefits

Many flame pattern types available
Thermocouple or thermopile options
Spark electrode available
Horizontal or vertical gas inlet
Several mounting bracket types available
Aerated pilots with non-linting characteristics

The Ranco® ETC Series Electronic Temperature Control offers a full-featured electronic replacement for electrical-mechanical temperature controls used in many commercial refrigeration applications. With its wide temperature range, one and two stage capability, selectable heating/cooling modes and multi-voltage input, the ETC is designed to provide application flexibility. Models available include 120/208/240V AC and 24V AC.

Features and Benefits

Anti-short cycle compressor delay for cooling applications
Wide temperature range (-30°F to 220°F) (-34.4°C to 104.4°C)
Wide differential adjustment (1°F to 30°F) (-17°C to -1°C)
LCD read-out for sensor temperature, control settings, and relay status
High Amp output relay (FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC) single stage
EEPROM memory retains control settings during power outages
Keypad lockout to prevent end-user alteration of settings
8 foot lead with sensor is extendable up to 400 feet using 18 or 22-gauge thermostat wire
Easy 4-step set-up
Heavy-duty relay is 1 HP rated
Selectable °F or °C heating/cooling modes
Single and two stage models
NEMA 1 case and cover
NEMA 4X models available
White backlight on display
Sensor rated IP67 for dust and water (<1m) resistance

The Ranco® ETC Series Electronic Temperature Control offers a full-featured electronic replacement for electrical-mechanical temperature controls used in many commercial refrigeration applications. With its wide temperature range, one and two stage capability, selectable heating/cooling modes and multi-voltage input, the ETC is designed to provide application flexibility. Models available include 120/208/240V AC and 24V AC.

Features and Benefits

Anti-short cycle compressor delay for cooling applications
Wide temperature range (-30°F to 220°F) (-34.4°C to 104.4°C)
Wide differential adjustment (1°F to 30°F) (-17°C to -1°C)
LCD read-out for sensor temperature, control settings, and relay status
High Amp output relay (FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC) single stage
EEPROM memory retains control settings during power outages
Keypad lockout to prevent end-user alteration of settings
8 foot lead with sensor is extendable up to 400 feet using 18 or 22-gauge thermostat wire
Easy 4-step set-up
Heavy-duty relay is 1 HP rated
Selectable °F or °C heating/cooling modes
Single and two stage models
NEMA 1 case and cover
NEMA 4X models available
White backlight on display
Sensor rated IP67 for dust and water (<1m) resistance

Universal flat silicon carbide igniter kit. Includes brackets and hardware to replace hundreds of OEM furnace and boiler igniters

SENSOR, FLAME, SILICON CRBD, 3100°F, 24 IN

18 ga copper high temperature fiberglass insulated lead wires
Faster time to temperature response, higher resistance to oxidation
Longer usable life, lower power consumption, more robust in transit, stronger more durable design
Supco flat igniters offer an efficient , stronger, reliable hot surface silicon carbide design, superior gas lighting ability
Universal kit that replaces all Robertshaw igniters part numbers to minimize inventory

Universal flat silicon nitride igniter kit. Includes brackets and hardware to replace hundreds of OEM furnace and boiler igniters

Features/Benefits

18 gauge copper high temperature fiberglass insulated lead wires
Faster time to temperature response
Higher resistance to oxidation
Longer usable life
Lower power consumption
More robust in transit
Stronger more durable design

Time to Temperature: <17 seconds @ 120 +/- 1.0 VAC
Resistance: 34 - 64 Ohms
Minimum Temperature: 2192°F / 1200°C @ 98 Volts
Maximum Temperature: 2732°F / 1500°C @ 132 Volts
Steady State Current: 0.8 to 2.0 Amps Maximum @ 120 Volts
Igniter Material: Silicon Nitride

The Robertshaw® 1820 Series Pilot Uni-Kit® models are designed to replace hard-to-find ITT-General PG9 type pilots. A special 1/4” tubing adaptor is typically provided with nut and ball sleeve. Uni-Kits are available with and without a 32” (810mm) thermopile.

Features and Benefits

Many flame pattern types available
Thermocouple or thermopile options
Spark electrode available
Horizontal or vertical gas inlet
Several mounting bracket types available
Aerated pilots with non-linting characteristics

The Robertshaw® Flame Sensor Assembly and Replacement Sensors have high temperature Kanthol sensor rods that will withstand 1800°F (982°C). The sensor rod is 4” long and can be cut and bent to match an original unit. Excellent replacement for most manufacturers' flame sensors.

Features and Benefits

Includes 30” of Teflon® insulated lead wire with a 482°F (250°C) rating
Connects to a 1/4” quick connect terminal

Robertshaw® IgnitorPro™ Universal Ignitors are a durable and versatile product contractors can keep on
hand to ensure quick, reliable repairs. These ignitors include all mounting brackets and hardware.

Versatile:
- Replace more than 150 ignitors from leading OEMs
- The perfect truck stock items-minimal inventory
- Round and flat blade designs available
Easy to install: Include all mounting brackets and hardware
Reliable: Constructed with silicon nitride, the new industry standard for durability
- Fewer callbacks
- More repeat business for new installations and preventive maintenance

The 1830 Series Pilot Uni-Kit® models are designed to be used with all Robertshaw® and most competitive thermocouples. Uni-Kit models include an adaptor that converts a threaded thermocouple/thermopile model 2CH to a snap-in thermocouple type, model 2C.

Features and Benefits

Many flame pattern types available
Thermocouple or thermopile options
Spark electrode available
Horizontal or vertical gas inlet
Several mounting bracket types available
Aerated pilots with non-linting characteristics

The 1830 Series Pilot Uni-Kit® models are designed to be used with all Robertshaw® and most competitive thermocouples. Uni-Kit models include an adaptor that converts a threaded thermocouple/thermopile model 2CH to a snap-in thermocouple type, model 2C.

Features and Benefits

Many flame pattern types available
Thermocouple or thermopile options
Spark electrode available
Horizontal or vertical gas inlet
Several mounting bracket types available
Aerated pilots with non-linting characteristics

The Robertshaw® IgnitorPro™ Universal Ignitors are the perfect truck stock item. All universal ignitors replace over 150 ignitors currently used in the field. To allow for universal applications, mounting brackets and hardware are included. Robertshaw IgnitorPro Universal Ignitors are recommended for operating voltage of 120V AC.



Features and Benefits

120V Round Ignitor
Replaces WH Hot Rod 21D64-2
3 Year Limited Warranty
Includes Universal Brackets

The 1830 Series Pilot Uni-Kit® models are designed to be used with all Robertshaw® and most competitive thermocouples. Uni-Kit models include an adaptor that converts a threaded thermocouple/thermopile model 2CH to a snap-in thermocouple type, model 2C.

Features and Benefits

Many flame pattern types available
Thermocouple or thermopile options
Spark electrode available
Horizontal or vertical gas inlet
Several mounting bracket types available
Aerated pilots with non-linting characteristics

Evaporator Fan Universal Motor Kit 220 Volt 3000 RPM, Single Speed CW -clockwise rotation OR CCW-counter clockwise rotation. Replaces over 450 different evaporator motor types, Break off 2" Motor Shaft with Breakaways at 1/2" and 1-1/2".

Features/Benefits

Break off 2" motor shaft with breakaways at ½" and 1 ½"
CSA® Approved
Impedance protected
Includes all mounting accessories and hardware
Prefastened multi fit, break off mounting bracket
Replaces over 450 different evaporator type motors
Reversible rotation
Shaft diameter ⅛"
Single speed
UL® Recognized

Universal flat silicon carbide igniter kit. Includes brackets and hardware to replace hundreds of OEM furnace and boiler igniters

SENSOR, FLAME, SILICON CRBD, 1800°F, 3100°F

18 ga copper high temperature fiberglass insulated lead wires
Faster time to temperature response, higher resistance to oxidation
Longer usable life, lower power consumption, more robust in transit, stronger more durable design
Supco flat igniters offer an efficient , stronger, reliable hot surface silicon carbide design, superior gas lighting ability
Universal kit that replaces all Robertshaw igniters part numbers to minimize inventory

Evaporator Fan Universal Motor Kit 120 Volt 3000 RPM, Single Speed CW -clockwise rotation OR CCW-counter clockwise rotation. Replaces over 450 different evaporator motor types, Break off 2" Motor Shaft with Breakaways at 1/2" and 1-1/2".

Features/Benefits

Break off 2" motor shaft with breakaways at ½" and 1 ½"
CSA® Approved
Impedance protected
Includes all mounting accessories and hardware
Prefastened multi fit, break off mounting bracket
Replaces over 450 different evaporator type motors
Reversible rotation
Shaft diameter ⅛"
Single speed
UL® Recognized

The TPI AC Volt 50 is a hand held device for determining the presence or absence of AC voltage in insulated wires, wall receptacles, fuses, junction boxes, switches, and any other voltage carrying electrical system.

The 1830 Series Pilot Uni-Kit® models are designed to be used with all Robertshaw® and most competitive thermocouples. Uni-Kit models include an adaptor that converts a threaded thermocouple/thermopile model 2CH to a snap-in thermocouple type, model 2C.

Features and Benefits

Many flame pattern types available
Thermocouple or thermopile options
Spark electrode available
Horizontal or vertical gas inlet
Several mounting bracket types available
Aerated pilots with non-linting characteristics

A/C DRAIN LINE CLEANER.
HELPS PREVENT COSTLY WATER DAMAGE CAUSED BY CLOGGED A/C CONDENSATE DRAINS.
Prevents clogs and build-up by loosening and removing mold, mildew, scum and water deposits in A/C & refrigeration drain pans, lines & pumps.
Safe for drain pipes, pumps and pans, is non-corrosive.
Ready to use liquid allows application in difficult to access condensate pans and lines.
When used regularly helps prevent further build-up.
Treats up to a 4-Ton unit.

Introducing the RS9010-2 Universal Thermostat Wall Plate designed to complement any decor while providing a secure and stylish mounting solution for your thermostat.

Fits all Pro-Series Wall Thermostats including the non-programmable, programmable, touchscreen and WiFi models.