8
A. PRESSURE TEST BLOCK ASSEMBLY
1. Make up cold water supply connection to the boiler.
2. Install pressure gauge or pressure-temperature
gauge in tapping provided. See Boiler Dimensional
drawing, Figure 7.1 (Section 7).
3. Plug all open tappings in the boiler and fill with
water. Apply approximately thirty (30) psig pressure.
Check to make certain that all joints and fittings are
water tight.
4. After all joints and connections have been proven
tight, remove cold water supply and plugs from
all tappings that are to be used. See Figure 7.1
(Section 7) for tapping locations.
B. BOILER RETURN CLEARANCE
Return piping must allow for opening and closing Burner
Mounting Plate. PB Heat, LLC suggests installing a
1-1/4 NPT tee, a 90° elbow, and a 1-1/4 NPT x 5” long
nipple in the return tapping before a vertical stand pipe
is used.
C. STEAM BOILER PIPING
1. Refer to the Steam Installation Survey and Hydronics
Institute Residential Hydronic Heating Installation/
Design Guide for guidance.
2. See Figures 3.1 through 3.4. The return from
system should always enter equalizer through
Hartford Loop, 2” to 4” below normal water line
(see dimensional drawing for normal water line).
3. See Table 3.1 for pipe size information.
4. Use swing joints to attach header to avoid damage to
the boiler due to thermal expansion and contraction
of steam header pipe.
5. Pipe the steam header a minimum of 24” above the
normal water line using swing joints to attach the
risers into the steam header.
3. PIPING & CONTROLS
PIPING & CONTROLS
Boiler
Model No.
Risers Header Equalizer
EC(T)-e-03-075 1-2” 2” 1-1/4”
EC(T)-e-03-100 1-2” 2” 1-1/4”
EC(T)-e-03-120 1-2” 2” 1-1/4”
EC(T)-e-04-125 2-2” 2-1/2” 1-1/2”
EC(T)-e-04-150 2-2” 2-1/2” 1-1/2”
EC(T)-e-04-175 2-2” 2-1/2” 1-1/2”
EC(T)-e-05-175 2-2” 2-1/2” 1-1/2”
EC(T)-e-05-200 2-2” 3” 1-1/2”
EC(T)-05-250 2-2” 3” 1-1/2”
EC(T)-06-275 2-2” 3” 1-1/2”
EC(T)-06-300 2-2” 3” 1-1/2”
Table 3.1: Steam Pipe Sizing
Do not pipe boiler before jacket is installed.
NOTICE
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