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VJS 150 TM 1-1/2" SWEAT BRASS SPIROVENT JR AIR ELIMINATOR
Simple to install with a straight in-line full flow design
Integral patented air release mechanism
VJS 100 TM 1" SWEAT BRASS SPIROVENT JR AIR ELIMINATOR
Simple to install with a straight in-line full flow design
Integral patented air release mechanism
VJS 075 TM 3/4" SWEAT BRASS SPIROVENT JR AIR ELIMINATOR
Simple to install with a straight in-line full flow design
Integral patented air release mechanism
Simple to install with a straight in-line full flow design
Integral patented air release mechanism
VJR 100 TM 1" FPT BRASS SPIROVENT JR AIR ELIMINATOR
Simple to install with a straight in-line full flow design
Integral patented air release mechanism
VJR 075 TM 3/4" FPT BRASS SPIROVENT JR AIR ELIMINATOR
Simple to install with a straight in-line full flow design
Integral patented air release mechanism
No bypass, isolating valves or replacement filters to clog and reduce flow
Dirt can be flushed while the system is in full operation
Quiet operation
Minimum pressure drop
always constant
Increased component life
Reduced oxygen-based corrosion and pump cavitation
Provides optimum heat transfer
Optional removable head for bundle inspection
No bypass, isolating valves or replacement filters to clog and reduce flow
Dirt can be flushed while the system is in full operation
Quiet operation
Minimum pressure drop
always constant
Increased component life
Reduced oxygen-based corrosion and pump cavitation
Provides optimum heat transfer
Optional removable head for bundle inspection
Front Diagnostic Lights
Switchable Priority
Built-in Priority Protection
Simplified Wiring
Premium Sealed Relays
Compact Design
Fuse Protected
100% Factory Tested
Isolated End Switch
Contractor Friendly PC Board Layout
Universal Thermostat Compatibility
24 Volt Power Output for hard wired thermostats
Field Replaceable Transformer
Front Diagnostic Lights
Switchable Priority
Built-in Priority Protection
Simplified Wiring
Premium Sealed Relays
Compact Design
Fuse Protected
100% Factory Tested
Isolated End Switch
Contractor Friendly PC Board Layout
Universal Thermostat Compatibility
24 Volt Power Output for hard wired thermostats
Field Replaceable Transformer
Front Diagnostic Lights
Switchable Priority
Built-In Priority Protection
Simplified Wiring
Premium Sealed Relays
Compact Design
Fuse Protected
100 Percent Factory Tested
Isolated End Switch
Contractor Friendly PC Board Layout
Universal Thermostat Compatibility
24 Volt Power Output for Hard Wired Thermostats
Field Replaceable Transformer
Add-On Power Control Plug
Built-In Post Purge and Pump Exercise Functions
Switchable Primary Circulator Output
Two Boiler Contacts, Utilizes Full Functionality of Mod-Con Boilers
Expandable to 20 Zoning Panels
Interface with EXP Zone Valve Controls
UL Approved
Made in USA
Front Diagnostic Lights
Switchable Priority
Built-In Priority Protection
Simplified Wiring
Premium Sealed Relays
Compact Design
Fuse Protected
100 Percent Factory Tested
Isolated End Switch
Contractor Friendly PC Board Layout
Universal Thermostat Compatibility
24 Volt Power Output for Hard Wired Thermostats
Field Replaceable Transformer
UL Approved
Made in USA
Microprocessor-based control designed to regulate the supply water temperature of a single boiler, based on the outdoor temperature
The FuelMizer is a boiler reset control and switching relay in one unit
it is ideal for retrofit application, but may also be used in new installations. Its quality features include full outdoor boiler reset control: it can control the system or zone valve circulator or it can override outdoor reset when DHW tank is calling. Its easy to install and set and will not affect the boilers warranty. Front mounted LED lights offer full diagnostic information
The FuelMizers typical energy savings is about 14%, with some customers experiencing 30%
Front Diagnostic Lights
Switchable Priority
Built-In Priority Protection
Simplified Wiring
Premium Sealed Relays
Compact Design
Fuse Protected
100 Percent Factory Tested
Isolated End Switch
Contractor Friendly PC Board Layout
Universal Thermostat Compatibility
24 Volt Power Output for Hard Wired Thermostats
Field Replaceable Transformer
UL Approved
Made in USA
Brass threads provide a metal-to-metal seal that ensures a leak-free installation
Integrated wrench flats enable secure installation without damage to the housing
McDonnell and Miller's patented Self-cleaning probe minimizes scale build-up and extends the recommended cleaning interval to 5 years
"Plug and Play" wiring harnesses are available for most residential gas-burning boilers
Electronic operation
Easy to install and wire
Red low water indicating LED
Green power indicating LED
No blow down required
Provide Intermediate Switching of a Line Voltage Device from a Low Voltage Controller
Integral Transformer Provides Low Voltage Power For Control Circuit
Integral Transformer Provides Low Voltage Power for Control Circuit
The RA832A is a DPST Relay, One Relay Pole is Designed for Low Voltage or Millivoltage (PowerPile) Auxiliary Load, Two Other Relay Poles are for Line Voltage Loads
Provides Intermediate Switching of a Line and Low Voltage Devices from a Line or Low Voltage Controller and is Typically Applied in Hydronic Heating Systems
Replaceable Socketed Relays
Two Troubleshooting LED
Replaceable Transformer Fuse
Push to Test Button
Low Voltage Contact Rating for PowerPile Applications
Long Life DC Relay Drive Control Technology
No Clog Vent
Dirt and Debris Resistant
360 Degree Adjustable Collar Ring for Installation Flexibility
Stainless Steel Concentrator Which Eliminates Gurgling Noise
No Clog Vent
Dirt and Debris Resistant
360 Degree Adjustable Collar Ring for Installation Flexibility
Stainless Steel Concentrator Which Eliminates Gurgling Noise
Bronze Body for Rigid Construction
Guarantees Fast Start up with Automatic Venting
Micro-Bubble Concentrator has Three Times the Impact Area of Other Products
Helps Prevent Corrosion of System Components
Improves System Efficiency
Made in USA
No Clog Vent
Dirt and Debris Resistant
360 Degree Adjustable Collar Ring for Installation Flexibility
Stainless Steel Concentrator Which Eliminates Gurgling Noise
Bronze Body for Rigid Construction
Guarantees Fast Start up with Automatic Venting
Micro-Bubble Concentrator has Three Times the Impact Area of Other Products
Helps Prevent Corrosion of System Components
Improves System Efficiency
Made in USA
No Clog Vent
Dirt and Debris Resistant
360 Degree Adjustable Collar Ring for Installation Flexibility
Stainless Steel Concentrator Which Eliminates Gurgling Noise
Bronze Body for Rigid Construction
Guarantees Fast Start up with Automatic Venting
Micro-Bubble Concentrator has Three Times the Impact Area of Other Products
Helps Prevent Corrosion of System Components
Improves System Efficiency
Made in USA
No Clog Vent
Dirt and Debris Resistant
360 Degree Adjustable Collar Ring for Installation Flexibility
Stainless Steel Concentrator Which Eliminates Gurgling Noise
Bronze Body for Rigid Construction
Guarantees Fast Start up with Automatic Venting
Micro-Bubble Concentrator has Three Times the Impact Area of Other Products
Helps Prevent Corrosion of System Components
Improves System Efficiency
Made in USA
No Clog Vent
Dirt and Debris Resistant
360 Degree Adjustable Collar Ring for Installation Flexibility
Stainless Steel Concentrator Which Eliminates Gurgling Noise
Bronze Body for Rigid Construction
Guarantees Fast Start up with Automatic Venting
Micro-Bubble Concentrator has Three Times the Impact Area of Other Products
Helps Prevent Corrosion of System Components
Improves System Efficiency
Made in USA
The PA404A is a Pressure Actuated High Limit, Safety Control for Steam Heating Boilers
It Breaks an Electrical Circuit to Shut Down the Burner if Steam Pressure Rises Above a Safe Level
The PA404B is Used with Suspension-Type Unit Heaters to Make the Fan Circuit When a Pressure Rise Indicates the Presence of Steam
Each Model Contains an SPST Micro Switch Snap Acting Switch
Sensitive Pressure-Actuated Diaphragm Expands or Contracts with Pressure Variations, Moving a Lever Mechanism Which Operates the Snap Switch
A Screw on Top of the Case Allows Set Point Adjustment without Removing the Cover
Differential is Adjusted by Means of a Dial Located Inside the Case
Immersion Type Controllers that Combine High Limit Protection with Switching Relay Control of Burner and Circulator Motors
High Limit Opens Burner Circuit Only
Select Models Include Transformer and Accessory Terminals for Adding a Remote Low Limit Controller
Case Available for Horizontal or Vertical Mounting
Requires a 24 Volt AC Thermostat with Heat Anticipator Set at 0.2 Ampere
Trade Line Models Include Well Adapter, Tube of Heat Conductive Compound and Range Stops
Immersion Type Controllers that Combine High Limit Protection with Switching Relay Control of Burner and Circulator Motors
High Limit Opens Burner Circuit Only
Select Models Include Transformer and Accessory Terminals for Adding a Remote Low Limit Controller
Immersion Type Controllers that Combine High Limit Protection with Switching Relay Control of Burner and Circulator Motors
High Limit Opens Burner Circuit Only
Select Models Include Transformer and Accessory Terminals for Adding a Remote Low Limit Controller
Case Available for Horizontal or Vertical Mounting
Requires a 24 Volt AC Thermostat with Heat Anticipator Set at 0.2 Ampere
Trade Line Models Include Well Adapter, Tube of Heat Conductive Compound and Range Stops