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

Pressure Limit Installation

Figure 9: Pressure Limit Installation for Probe

LWCO Equipped Boilers

NOTICE

L404A Pressure Limits contain mercury in a sealed tube. Do not place limit in the trash at the end of its useful life.

If this limit is replacing a limit that contains mercury in a sealed tube, do not place your old limit in the trash.

Contact your local waste management authority for instructions regarding recycling and the proper disposal of this limit, or of an old limit containing mercury in a sealed tube.

If you have questions, call Honeywell Inc. at

1-800-468-1502.

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.

WARNING

Aquastat bulb must be fully inserted into the well.

8.Connect the field 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 field 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.

CAUTION

Do not apply pressure to the gauge case - this may result in inaccurate readings.

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.

22

Page 21 Page 23
Page 22
Image 22
Burnham V8 Series manual Float-Type Low Water Cut-Off Pressure Limit Installation
Page 21 Page 23

V8 Series specifications

The Burnham V8 Series is a prestigious line of oil-fired boilers renowned for their efficiency, reliability, and advanced design features. Tailored for residential and light commercial applications, this series exemplifies the perfect blend of tradition and modern technology, ensuring long-term performance and comfort for users.

One of the hallmark features of the Burnham V8 Series is its exceptional cast iron construction, which provides durability and superior heat retention. This robust design allows for an extended lifespan while ensuring that the boiler can withstand the rigors of daily use. The cast iron sections are engineered to facilitate optimal heat transfer and efficiency.

The V8 Series boasts an impressive fuel efficiency rating, often exceeding 85%. This high efficiency is achieved through a combination of advanced combustion technology and the boiler's thoughtful design, which minimizes heat loss. Users benefit not only from lower energy bills but also from a reduced environmental footprint, making the Burnham V8 Series a sustainable choice for heating solutions.

In terms of technology, the Burnham V8 Series features a standing pilot ignition system or an optional intermittent ignition device that enhances safety and efficiency. The advanced burner design allows for smooth operation and excellent fuel utilization, further contributing to the overall economy of the system.

Another notable characteristic is the versatility of the Burnham V8 Series. It can be easily adapted to work with various heating systems, including hot water heating applications. Its compatibility with different fuels, such as natural gas or oil, gives users the flexibility to choose the best energy source for their needs, providing longevity and value.

The installation process is made straightforward with ample connectivity options for plumbing and flue. Its compact design enables easier placement within homes or commercial spaces without compromising performance. Furthermore, the boiler is backed by extensive warranties, ensuring peace of mind for homeowners and businesses alike.

In conclusion, the Burnham V8 Series stands out as a reliable and efficient heating solution, blending robust construction with advanced technology. Its commitment to performance, versatility, and efficiency makes it an excellent choice for meeting the heating demands of various applications while promoting environmental responsibility. Whether for a single-family home or a light commercial building, the Burnham V8 Series remains a trusted leader in the industry.
Top Page Image Contents