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PAGE 6
NUMBER
EVAPOR.
OF
RATE
SECTIONS
GPM
3
.61
4
.85
5
1.19
6
1.52
7
1.86
8
2.19
9
2.53
10
2.86
11
3.20
12
3.53
Feed water makeup requirements.
NOTE
These recommendations are considered normal for
compact buildings on the basis of 80% receiver use.
Where buildings are spread out, additional receiver
capacity may be necessary because of the extended
time required for condensation to return to the receiver.
9.
WATER PIPING
See FIGURE 5 for acceptable water piping diagram. TABLE
6 gives pumping rate and supply & return sizing for standard
installations.
BOILER SIZE
GPM
3
30
4
41
5
58
6
74
7
90
8
106
9
123
10
139
11
155
12
171
Based on 20°F system temperature drop.
NOTE
Boiler supplied with 4" water supply tapping and 3" return
tapping.
19A SERIES BOILER
INSTALLATION INSTRUCTIONS
TABLE 5
WATER 1"
MIN. FEED
BELOW WATER
WATER PUMP
LEVEL GAL.
RATE-GPM
1.4
1.22
1.9
1.70
2.4
2.37
2.9
3.04
3.3
3.71
3.8
4.38
4.3
5.05
4.8
5.72
5.2
6.39
5.7
7.06
TABLE 6
RETURN CONN.
SUPPLY CONN.
2"
2"
2-1/2"
3"
3"
3"
3"
3"
3"
3"
SYSTEM SUPPLY
CONNECTIONS
CONDENSATE
RECEIVER
CAP.-GAL.
GATE VALVE
12
16
SUPPORT RELIEF VALVE
22
DISCHARGE PIPE
29
TERMINATE DISCHARGE
35
PIPE SO AS TO AVOID
DISCHARGE ON PERSONS
41
47
54
60
66
SYSTEM RETURN
CONNECTION
GATE VALVE
BLOWDOWN VALVE
TO DRAIN
10. TANKLESS HEATERS
Heater openings are provided for below-the-water-line tankless
heater coils in all special intermediate sections when ordered.
See TABLE 2 for the conr•ct placement of these heater
sections. Install the low limit temperature control in the 3/4"
tap located in the center of the coil.
If the heater sections are installed in an order other than in
2"
TABLE 2 the jacket panels will not match.
2"
11. SMOKE HOOD
2-1/2"
Install smoke hood with the correct size smoke pipe
3"
connecting collar using the 5/16" x 1-1/2" studs and hex nuts
furnished in screw seats in the back section. Apply self-
3"
adhesive insulating tape (Items 21 and 22 in Parts detail
3"
drawing on Page 2) to smoke hood flange and damper angle
3"
Item 23. Fasten the slide damper in the open position for
starting the burner adjustment process.
3"
4"
See FIGURE 6 for recommended "L" coil piping and FIGURE
4"
7 for SM9-18 single and/or dual piping arrangements.
CHECK VALVE
CIRCULATOR
RELIEF VALVE
GATE
VALVE
TYPICAL WATER PIPING DIAGRAM
FIGURE 5
EXPANSION
TANK
AIR REMOVAL
PIPING
C.W. MAKEUP
CONNECTION
PRESSURE
REGULATING
VALVE
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