10/22/2008
3
BI302B
CAUTION
Hazards or unsafe practices could result in property damage, product damage, severe personal
injury and/or death.
3.
Remember, safety is the installer’s responsibility and the installer must know this product well enough to instruct the
end user on its safe use.
Safety is a matter of common sense - - a matter of thinking before acting. Professional installers have training and
experienced practices for handling electrical, sheet metal, and material handling processes. Use them.
CLEARANCES
MINIMUM CLEARANCE FROM
COMBUSTIBLE SURFACES
SUGGESTED MINIMUM
SERVICE CLEARANCE
BACK
0 INCH
0 MM
0 INCH
0 MM
LEFT
1 INCH
25 MM
6 INCHES
152 MM
RIGHT
1 INCH
25 MM
6 INCHES
152 MM
FRONT
1 INCH
25 MM
24 INCHES
610 MM
TOP
1 INCH
25 MM
24 INCHES
610 MM
BOTTOM
REQUIRED CLEARANCE – 10 INCHES/254 MM
AVAILABLE, ELECTRO INDUSTRIES, INSTALL PARTS OR KITS
EMB-BK
MINI-BOILER PLUMBING KIT BASIC
EMB-P2
PUMP KIT 1/25HP BOILER
ES-24-SRO
STAT DIG SLAB/ROOM/ROOM 24VAC
@WFS5 WATER
SENSOR
5616
TRANSFORMER HTR 4X4 PLATE 40VA 24VAC
5576
AIR ELIMINATOR 3/4" ROLLAIRTROL
5456A
GAUGE PRES/TEMP 75 PSI/320DG F .25"
5453
VALVE RELIEF 30 PSIG .75” NPT MALE
5590
EXPANSION TAN K 40K BTU 20.1 GALLON
EMB-PK
MINI-BOILER INSTALL KIT PREFERRED
EB-5415A ZONE
CONTROLLER
MECHANICAL INSTALLATION
CAUTION
Electro Industries Inc. requires the use of dielectric isolation between the boiler vessel supply and return
piping when the boiler is plumbed using copper or any other dissimilar metal. Damage to the vessel
caused by galvanic corrosion voids Electro Industries’ warranty.
Reference drawing BX304
At the outlet pipe the first fitting must be the supplied Tee with the sensor well fitting. It is important that the WarmFlo
®
aquastat sensor be as close as possible to the vessel, reference detail A on drawing BH304. Please reference BD705 for
proper installation of the sensor. After the Tee and the sensor have been permanently installed, route the sensor cable
along the right side of the unit and properly affix (do not puncture cable) to the wall.
The plumbing components and piping layout shown on drawing BX304 has been very carefully picked and should be
plumbed as shown. When following this diagram, the water fill procedure becomes very simple and almost guarantees the
removal of all air or prevents air locking problems. Experienced hydronic heating installers may be able to eliminate
components such as regulated fill valve, check valve, temperature gauge, etc., but the inclusion of these components
guarantees installation and initial operating success.
The key mechanical components required include:
