551066A

112115

• Copper and copper plated tubes
• Brass vent tube fittings Airtrol tank fittings help establish the proper initial liquid level in the compression tank when filling the hydronic system. They help maintain proper system pressurization by directing released air to the compression tank during system operation and permit cooler liquid flow to the boiler during the off cycle as system liquid cools. Airtrol tank fittings must be used with the appropriately sized in-line airtrol or rolairtrol air separator.Sid Harvey Item #:ATF12: Replaces Part #:'s : 3651,
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  ATF12

• Automatic air vents are designed to remove trapped air that accumulates in heating and air conditioning systems automatically
• Air removal enhances performance and life of a system by reducing the effects of corrosion due to oxygen, pockets of air trapped in the heating emitters and cavitation in the circulation pumps
• These automatic air vents eliminate residual air in heating and air conditioning systems without the need for manual intervention
• This prevents undesired noise, wear of devices in the circuits and inefficient performance of heating units
• 90 psi maximum discharge pressure
• 1.75 scfm max discharge rate

502710A

79

• Non adjustment

D18A

• Non adjustment

C18A

418A

• Non adjustment
• Install on radiators near the boiler and in warm rooms
• Venting capacity - equal to 4 ordinary type air valves

518A

• Immersion-type controllers that combine high limit protection with low limit and circulator control in forced hydronic heating systems, including domestic hot water service
• Require 24 VAC thermostat with heat anticipator set at 0.2 amp (plus current draw of gas valve on L8124E)
• Include diaphragm powerhead and micro Switch assembly that respond to temperature changes in boiler water
• Mount directly to boiler
• Provide multi-zone control by using a separate circulator and R845 relay for each zone
• Electrical burner rating: at full load: 7.4 amp at 120 VAC, 3.7 amp at 240 VAC line voltage; at locked rotor: 44.4 amp at 120 VAC, 22.7 amp at 240 VAC line voltage
• Electrical circulator rating: 7.4 amp at 120 VAC, 3.7 amp at 240 VAC full load; 44.4 amp at 120 VAC, 22.2 amp at 240 VAC locked rotor
• 1-1/2" depth insulation

C317-5

• Totally enclosed micro switch snap-acting switches operate on temperature rise to setpoint
• Visible control point scale and external adjustments screw permit easy setting
• Direct or well immersion of the sensing element
• Remote bulb model may be used to sense air temperature in ducts and in outside air sensing applications Honeywell L4006A2007 High or Low Limit Immersion Aquastat Controller, 100 - 240 deg F, 5 - 30 deg F DifferentialSid Harvey Item #:C290A: Replaces Part #:'s : AQU4006A1678-C290 | AQU4006A2007-C290A | C290 | C290R |,
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  C290A

• Totally enclosed micro switch snap acting switches operate on temperature rise to setpoint
• Visible control point scale and external adjustments screw permit easy setting
• Horizontal insertion of the sensing element
• Direct/well immersion of the sensing element
• Remote bulb model may be used to sense air temperature in ducts and in outside air sensing applications
• Contacts make on temperature rise
• Screw terminals wiring

C290-1A