Operating instructions

13
III. Semi-Pak Boiler Assembly
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:
Pre-Installation.
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:
l. EZ–Connect Carton (either steam or water) includes
trim, controls, wiring and wiring instructions for
installation.
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 and hex bushing provided (¾ NPT to
¼ NPT). See Figures 1 and 2. DO NOT TWIST
CONTROL. Use wrench on hex fitting located at
bottom of control.
b. 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.
c. Install Low Water Cutoff Probe into Tapping "K"
(¾ NPT). HANDLE PROBE WITH CARE.
d. Attach Low Water cutoff Control to Probe by
following instructions packed with control.
e. Install gauge glass fittings into Tappings "C"
(½ NPT). See Figures 1 and 2. Lower fitting has
small drain cock.
f. Install gauge glass and protective rods in fittings.
g. Attach "Lowest Permissible Water Level" Plate
with sheet metal screws in location indicated in
Figure 9.
h. 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 Blow-Down Card to Jacket Left Side
Panel adjacent to low water cutoff.
iv. Provide blow down discharge piping.
b. Attach street elbow siphon and limit to low water
cutoff.
c. 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.
d. Attach "Lowest Permissible Water Level" Plate
with sheet metal screws in location indicated in
Figure 9.
e. Attach "Frequent Water Addition" Label above
the "Lowest Permissible Water Level" Plate.
3. All Steam Boilers and Water Boilers except
"EZW" and "WC" Controls Cartons
a. Install Junction Box. See Figure 18.
i. Remove center knockout in rear of Junction
Box and insert black plastic snap bushing in
hole.
ii. Install mounting bracket to rear of Junction
Box with two (2) blunt sheet metal screws
provided.
Figure 18: Junction Box and Mounting Bracket
Assembly
WARNING
Installation of this boiler should be
undertaken only by trained and skilled
personnel from a qualified service agency.