13)Run gas valve safety shutdown test:

•For standing pilot boiler models, disconnect the thermocouple from gas valve. Both pilot burner and main burners should stop firing.

•For intermittent ignition boiler models, with main burners firing, disconnect ignition cable from ignition module. Both pilot burner and main burners should stop firing.

15) Check the manifold pressure and adjust if necessary. To do this, use the following procedure:

WARNING

FAILURE TO FOLLOW THE FOLLOWING PROCEDURE EXACTLY COULD RESULT IN OVER- FIRING OF THE BOILER AND A CARBON MONOXIDE HAZARD.

a)Connect a manometer to the line pressure tap on the gas valve (see Figures 24 and 25).

b)Check the line pressure with all gas appliances on and off. The line pressure at the boiler must be within the following limits regardless of what combination of appliances is firing:

Line Press (inches w.c.)

Natural Gas

LPGas

Min.

5.0

11.0

Max.

14.0

13.0

If the line pressure falls outside of these limits, find and correct the cause of the problem before proceeding further.

c)Connect a manometer to the manifold (outlet) pressure tap on the gas valve (see Figures 24 and 25).

d)Read the manifold pressure. It should be set at:

 

Natural Gas

LP Gas

Manifold Press. (inches w.c.)

3.5

10.0

e)If a manifold pressure adjustment is needed, make the adjustment by turning the regulator (see Figures 24 and 25) screw clockwise to raise the pressure and counter clockwise to reduce the pressure. If a manifold pressure adjustment is made, recheck the line pressure to be certain that it is still within acceptable limits. Replace the cover screw on the regulator.

16)Test thermostat operation while the boiler is running. Turn the thermostat to the lowest setting. Circulator should stop running. For standing pilot boiler models, pilot burner should remain lit but the main burners should stop firing. For intermittent ignition boiler models both pilot burner and main burners should stop firing. Raise the thermostat back to the highest setting. Circulator should restart. The main burners( for standing pilot boiler models) or pilot burner and main burners (for intermittent ignition boiler models) should relight.

17)Verify high limit operation. Allow the boiler water temperature to increase to hi limit setting. Circulator should continue running. For standing pilot boiler models, pilot burner should remain lit but the main burners should stop firing. For intermittent ignition boiler models both pilot burner and main burners should stop firing.

18)Allow the boiler water temperature to drop below high limit setting.

19)The main burners (for standing pilot boiler models) or pilot burner and main burners (for intermittent ignition boiler models) should relight.

24

22

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Crown Boiler AWI095, TWI095, TWI128, TWI061, TWI162, AWI061, AWI195, AWI162, AWI229, AWI262, AWI037, AWI128, AWI295
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AWI262, AWI095, TWI095, AWI195, AWI037 specifications

Crown Boiler is a renowned name in the heating industry, providing high-quality, efficient heating solutions that cater to various residential and commercial needs. Among its impressive lineup, the AWI and TWI series stand out for their design, technology, and performance.

The Crown Boiler AWI061 and TWI061 are part of the Hydronic Boiler range, designed to deliver efficient hot water heating. The AWI series features an advanced pressure-jet design that allows it to operate with exceptional fuel efficiency, reducing operating costs for homeowners and businesses alike. Additionally, these models come equipped with an integrated pump system that ensures a consistent supply of hot water, making them ideal for both space heating and domestic hot water applications.

Meanwhile, the AWI162 and AWI128 models are engineered for higher output, addressing larger heating needs without compromising efficiency. These models showcase a robust heat exchanger made of durable cast iron, promoting longevity and effective heat transfer. The AWI series boilers feature a modern control system that allows for precise temperature management, enhancing comfort while minimizing energy consumption.

The Crown Boiler AWI295, on the other hand, steps up with a significant heating capacity suited for commercial applications. This model is designed with advanced safety and efficiency technologies, including an intelligent control module that monitors temperature and pressure, ensuring optimal performance while preventing malfunctions. The large water volume design allows for enhanced thermal stability and consistent heating output.

A notable characteristic across these models is their ease of installation and maintenance. Crown Boiler has engineered the units with user-friendly features, including accessible components and simplified diagnostics that help technicians service the boilers swiftly. Moreover, the durability of cast iron construction ensures that these units can withstand high thermal stress while delivering reliable performance over the years.

In summary, Crown Boiler’s AWI061, TWI061, AWI162, AWI128, and AWI295 models offer a range of solutions equipped with advanced technologies and features designed for efficiency and reliability. These boilers are suitable for diverse heating needs, promising optimal comfort and convenience in both residential and commercial settings. With Crown Boiler's longstanding commitment to quality, customers can be assured of a robust heating solution backed by exceptional service.
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