III. Semi-Pak Boiler Assembly
WARNING
Installation of this boiler should be undertaken only by trained and skilled personnel from a qualified service agency.
A.Remove Crate
1.Remove all hold down screws and brackets.
2.Slide boiler to rear of skid and carefully remove from crate skid onto 2 inch thick piece of wood and then onto floor. Do not bump boiler jacket against floor.
3.Do not drop boiler at any time.
B.Move Boiler To Permanent Position. Refer to Section I:
C.Identify Trim and Controls
FIRST - Determine controls ordered with boiler and refer to appropriate section(s) following:
There are two ordering methods for trim and controls:
1.
2.Separate Trim Carton (steam or water) and Control Carton (steam or water). Only wiring requiring special connections is provided. For wiring requirements, refer to Section VIII: Electrical and appropriate wiring diagram.
D.Install Trim and Controls
Refer to appropriate paragraphs (following) for trim and controls to be installed.
1.Steam Boiler with Probe Low Water Cutoff
a.Install pressure limit control into Tapping "H" with siphon, ¾" x ¼" hex bushing, ¾" elbow and ¾" x 3" nipple provided. See Figures 1 and 2. DO NOT TWIST control. Use wrench on hex fitting located at bottom of control. See
Figure 18.
b.The L404F pressure limit employs a snap action switch and does not require leveling. See Figure 18.
c.Install pressure gauge into Tapping "B" (½ NPT bushed to ¼ NPT). See Figures 1 and 2. Tighten with wrench applied to square shank on back of gauge. DO NOT APPLY PRESSURE ON GAUGE CASE since this may destroy calibration of gauge.
d.Install Low Water Cutoff Probe into Tapping "K"
(¾ NPT). HANDLE PROBE WITH CARE.
e.Attach Low Water cutoff Control to Probe by following instructions packed with control.
f.Install gauge glass fittings into Tappings "C"
(½ NPT). See Figures 1 and 2. Lower fitting has small drain valve.
g.Install gauge glass and protective rods in fittings.
h.Attach "Lowest Permissible Water Level" Plate with sheet metal screws in location indicated in Figure 9.
i.Attach "Frequent Water Addition" Label above the "Lowest Permissible Water Level" Plate.
2.Steam Boiler with McDonnell & Miller 67 Float Low Water Cutoff
a.Install Low Water Cutoff, see instructions packed with control.
i. Screw brass nipples with union halves into Tappings "C" (½ NPT). See Figure 1 and 2.
ii. Attach Gauge Glass/Low Water Cutoff Assembly to union halves.
iii. Affix
Panel adjacent to low water cutoff. iv. Provide blow down discharge piping.
b.Attach street elbow siphon and pressure limit control to low water cutoff. DO NOT TWIST control. Use wrench on hex fitting located at bottom of control.
c.The L404F pressure limit employs a snap action switch and does not require leveling. See Figure 18.
d.Install pressure gauge into Tapping "H" (¾ NPT bushed to ¼ NPT). See Figures 1 and 2. Tighten with wrench applied to square shank on back of gauge. DO NOT APPLY PRESSURE ON GAUGE CASE since this may destroy calibration of gauge.
e.Attach "Lowest Permissible Water Level" Plate with sheet metal screws in location indicated in Figure 9.
f.Attach "Frequent Water Addition" Label above the "Lowest Permissible Water Level" Plate.
Figure 18: L404F Pressure Limit Control
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