temperature. Main burners and pilot burner should extinguish, and blower should stop.

3.Adjust limit to setting above observed temperature. Ignition sequence should begin.

4.Adjust thermostat to lowest setting. Adjust limit to desired setting.

P.Adjust gas input rate to boiler.

1.Adjust thermostat to highest setting.

2.Check manifold gas pressure. See Table 5 or rating label located in the boiler’s vestibule compartment. Adjust gas valve pressure regulator as necessary (turn adjustment screw counterclockwise to decrease manifold pressure, or clockwise to increase manifold pressure). If pressure cannot be attained, check gas valve inlet pressure. If less than minimum indicated in Table 5 or boiler’s rating label, contact gas supplier for assistance.

3.Clock gas meter for at least 30 seconds. Use Table

13 to determine gas flow rate in Cubic Feet per

Hour.

WARNING

Failure to properly adjust gas input rate will result in over firing or under firing of the appliance. Improper and unsafe boiler operation may result.

4.Determine Input Rate. Multiply gas flow rate by gas heating value.

5.Compare measured input rate to input rate stated on rating plate.

a.Boiler must not be over fired. Reduce input rate by decreasing manifold pressure. Do not reduce more than 0.3 inch w.c. If boiler is still overfired, contact your Burnham distributor or Regional

Office for replacement Gas Orifice.

b.Increase input rate if less than 98% of rating plate input. Increase manifold gas pressure no more than 0.3 inch w.c. If measured input rate is still less than 98% of rated input:

i.Remove Main Burners per procedure in Section IX: Service.

ii.Remove gas orifices. Drill one (1) drill size larger (drill size is stamped on orifice, or see

Section X: Repair Parts).

iii.Reinstall gas orifices and main burners.

Measure input rate.

6.Recheck Main Burner Flame.

7.Return other gas-fired appliances to previous conditions of use.

Q.Review User’s Information Manual and system operation with owner or operator.

Table 13: Gas Flow Rate in Cubic Feet

Per Hour

Seconds

Size of Gas Meter Dial

for One

 

 

 

One-Half

One

Two

Revolution

Cu. Ft.

Cu. Ft.

Cu. Ft.

30

60

120

240

32

56

113

225

34

53

106

212

36

50

100

200

38

47

95

189

40

45

90

180

42

43

86

172

44

41

82

164

46

39

78

157

48

37

75

150

50

36

72

144

52

35

69

138

54

33

67

133

56

32

64

129

58

31

62

124

60

30

60

120

45

Page 45
Image 45
Burnham PVG manual Adjust gas input rate to boiler, Gas Flow Rate in Cubic Feet Per Hour

PVG specifications

Burnham PVG, an innovative leader in the heating industry, presents a range of high-efficiency gas boilers that are designed specifically for residential applications. Burnham has established a solid reputation for producing reliable and durable heating solutions, with the PVG series exemplifying their commitment to quality and performance.

One of the standout features of the Burnham PVG is its advanced stainless steel heat exchanger. This design not only ensures superior heat transfer but also enhances durability and resistance to corrosion compared to traditional cast iron counterparts. The use of stainless steel contributes to the longevity of the system, allowing homeowners to enjoy efficient heating for years with less risk of breakdown.

The PVG series incorporates cutting-edge modulating technology, which adjusts the boiler’s output to match the heating demand. This modulating feature allows for more precise temperature control, optimizing energy consumption and minimizing fuel costs. Unlike conventional boilers that operate at a fixed output, the ability to modulate enables the PVG to deliver precisely the right amount of energy when needed, thus enhancing overall system efficiency.

In addition to its efficiency and performance capabilities, the Burnham PVG is designed with ease of installation and maintenance in mind. The compact design enables versatile installation options, even in tight spaces or retrofit applications. Furthermore, the accessible panel layout simplifies service and maintenance tasks, allowing HVAC professionals to perform routine checks and repairs with ease.

The PVG series also emphasizes user-friendly operations, featuring intuitive controls that allow for straightforward adjustments and monitoring. With options for direct vent and conventional venting systems, homeowners can select the best installation method for their specific needs and living environment.

Additionally, the Burnham PVG aligns with environmental considerations by meeting stringent emissions standards, contributing to reduced greenhouse gas outputs. With its energy-efficient operation and commitment to sustainability, the PVG series represents a forward-thinking choice for those looking to reduce their carbon footprint while enhancing home comfort.

In summary, Burnham PVG is characterized by its durable stainless steel construction, modulating technology, compact design, user-friendly controls, and eco-conscious performance. This series exemplifies what modern residential heating solutions should aspire to achieve: efficiency, reliability, and sustainability, making it an excellent choice for intelligent energy management in the home.