Burnham V8 Series Bedienungsanleitung PDF herunterladen (Seite 22)

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e. An L404F pressure limit does not require

leveling.

7. On units with a heater opening, install the aquastat

controller well in the ½" NPT or ¾” NPT tapping in

tankless heater plate or cover plate. Slip the bulb of

the aquastat into the well and secure the control in

place with the set screw.

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8. Connect the ﬁ eld wiring to the pressure limit, the

LWCO, the R8239A Control Center/J-box and the

burner J-box or burner disconnect J-box.

If equipped with tankless heater, connect ﬁ eld

wiring from the aquastat control to the R8239A

Control Center transformer terminals or oil burner

primary control's "T-T" terminals.

Make the wiring connections as shown in Figures

19, 20 and 21.

NOTE:

• The R7184P Primary Control has pre-installed

"T-T" jumper resistor. To activate "T-T"

terminals, "T-T" jumper must be removed. To

remove, use side cutting pliers to cut jumper (see

Figure 28).

• Do not remove (cut) "T-T" jumper unless

wiring diagram indicates a direct connection

from thermostat and/or tankless heater aquastat

control to the oil burner primary control's "T-T"

terminals.

Refer to Paragraph S for details on use of burner

disconnect junction box provided with all

knockdown boiler builds.

O. INSTALL TRIM AND CONTROLS WITH

BECKETT BURNER. - Water Boilers Only (See

Figures 1A, 1B, 1C and 5).

1. Thread ½” NPT pipe plugs into gauge glass tappings

in the upper right side of front section.

2. Thread ¾” NPT pipe plug in probe low water cut off

tapping (just left of gauge glass tappings).

3. Thread combination pressure/temperature gauge into

¼” NPT tapping. Tighten with wrench applied to the

square shank of the gauge.

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4. Screw drain valve into ¾" NPT side outlet of the

1½” NPT x 90° elbow (note - lower front section

tapping “G” is used for standard return on water

boilers).

5. If circulator (not supplied with boiler) is to be

mounted directly to 1½" NPT boiler return tapping

"G", use the piping arrangements outlined in steps a.

thru e. as follows: (see Figures 13A, 13B and 13C)

a. Thread 1½” NPT x 3” long nipple and 1½”

NPT x 90° elbow with ¾" NPT side outlet

into the return tapping and tighten with a pipe

wrench.

Figure 9: Pressure Limit Installation for Probe

LWCO Equipped Boilers

Figure 8: Float-Type Low Water Cut-Off and

Pressure Limit Installation

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