PB Heat EC Series User Manual download pdf (Page 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 and 3.2. 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 AND CONTROLS

PIPING AND CONTROLS

Do not pipe boiler before jacket is

installed.

NOTICE

REAR

FRONT

EQUALIZER

REAR

FRONT

EQUALIZER

HEADER

RISERS

Figure 3.1: Steam Boiler Piping, EC-03

Figure 3.2: Steam Piping, EC-04 to EC-06

Boiler Model No. Risers Header Equalizer

EC/ECT-03-075

EC/ECT-03-100

EC/ECT-03-120

EC/ECT-04-125

EC/ECT-04-175

EC/ECT-05-200

EC/ECT-05-250

EC/ECT-06-275

EC/ECT-06-300

1-2"

2-2"

2-1/2"

1-1/4"

1-1/2"

Table 3.1: Steam Pipe Sizing

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 26 27

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PB Heat EC Series User Manual Page 8

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