SERIES 28A BOILER INSTALLATION AND OPERATION INSTRUCTIONS

Page 9

5.Insert the large port connector with its steel inner ring into the upper port.

6.Insert the two round port connectors into the lower ports.

NOTE: Apply the spray adhesive supplied with the boiler to the port recess to hold the port connector in place if necessary.

7.Select the correct intermediate section and carefully move it into place against the back section, Figure 4.

CAUTION: Any steam uptake and heater sections must be located as shown in Table 3. Failure to comply with this caution may result in poor boiler performance and prevent the jacket from fitting! Only one intermediate section with an external leg boss has been included. It should be located toward the front of the boiler for optional low water cutoff use. See Table 3.

NOTE: A putty knife or similar tool can be used to hold the port connectors in place while the intermediate section is positioned. It must be removed before the sections make contact or the port connector will be damaged resulting in a leak!

8.Insert the four draw rods through the casting bosses. Thread nuts onto one end of the rods. Place washers on the other end of the rods before threading nuts onto them. Snug the nuts finger tight. Use a spirit level to ensure that the first two sections are plumb and properly aligned, Figure 6. Check the rope to insure that it’s properly positioned. Once the sections are plumb and the rope and port connectors are properly positioned follow the torque sequence shown in Table 4.

Figure 6 - Section Alignment

Table 4 - Section Torque Sequence

 

Step

Rod Position

 

Torque

 

 

ft lbs

Nm

1

Upper Right

25

34

2

Lower Left

25

34

3

Lower Right

25

34

4

Upper Left

10

14

5

Upper Right

50

68

6

Lower Left

50

68

7

Lower Right

50

68

8

Upper Right

75

102

9

Lower Left

75

102

10

Lower Right

75

102

11

Upper Left

30

42

12

Upper Right

125

169

13

Lower Left

125

169

14

Lower Right

125

169

15

Upper Right

125

169

16

Upper Left

40

54

NOTE: With these initial torques the sections may not be metal to metal, which is acceptable. If any of the ports leak during the hydrostatic test the torque can be increased to 200 ft lbs, 271 Nm on the upper right rod. The torque on the lower left and right rods can be increased to 150 ft lbs, 203 Nm. Once the sections are metal to metal additional torque will not improve the seal.

Table 3 - Section Locations

Boiler

 

 

 

 

 

 

 

Section Location Numbered From Front To Back

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Model

1

2

3

4

5

6

7

 

8

9

10

11

12

13

 

14

15

16

17

18

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

28A-4

F

T

H

B

 

 

 

 

 

 

 

F

Front Section

 

 

 

 

 

28A-5

F

H

T

H

B

 

 

 

 

 

 

T

Intermediate Section w/ 5" Tapping & Boss

 

28A-6

F

T

H

T

H

B

 

 

 

 

 

H

Intermediate Section w/ Heater Opening

 

28A-7

F

T

H

P

T

H

B

 

 

 

 

P

Intermediate Section, Plain

 

 

 

28A-8

F

T

H

P

H

T

H

 

B

 

 

B

Back Section

 

 

 

 

 

28A-9

F

T

H

P

H

P

T

 

H

B

 

 

 

 

 

 

 

 

 

 

28A-10

F

H

T

H

P

H

P

 

T

H

B

 

 

 

 

 

 

 

 

 

28A-11

F

H

T

H

P

T

P

 

 

T

H

B

 

 

 

 

 

 

 

 

28A-12

F

H

T

H

P

T

H

 

P

H

T

H

B

 

 

 

 

 

 

 

28A-13

F

H

T

H

P

H

T

 

P

P

H

T

H

B

 

 

 

 

 

 

28A-14

F

H

T

H

P

H

T

 

H

P

H

P

T

H

 

B

 

 

 

 

28A-15

F

H

T

H

P

H

P

 

T

H

P

H

P

T

 

H

B

 

 

 

28A-16

F

H

T

H

P

H

P

 

H

T

H

P

H

P

 

T

H

B

 

 

28A-17

F

H

T

H

P

H

P

 

H

T

H

P

H

P

 

H

T

H

B

 

28A-18

F

H

T

H

P

H

P

 

H

P

T

H

P

H

 

P

H

T

H

B