Service manual

MSE Series Electric Boilers – Installation and Service Manual
5
2.4 WALL MOUNTING
CAUTION: Failure to correctly position the boiler may result in element burn out. For example,
installing the boiler with the front casing panel facing upwards will result in element burn out.
This boiler must be installed using the attached wall mounting brackets. It is critical that the boiler be
installed level and oriented as shown in Figure 2 (below). When correctly positioned, the front panel is
vertical and the 1 1/4”NPT outlet connection is directly above the 1 1/4”NPT inlet connection.
The wall mounting brackets on the boiler feature a “key-hole” opening suitable to fit over the head of two
previously installed 5/16” lag screws. The key-hole openings are located on 16” centers (i.e. standard
stud spacing) on the top side of the hangers. The lag screws must be suitably anchored to safely support
the weight of the boiler including water content, piping and wiring.
2.5 PIPING
The BC-1 controller includes six operation modes to handle various piping arrangements and applications
as specified in the BC-1 Controller Manual. The operation mode of the controller must be correctly
selected to match the piping arrangement.
A typical parallel piping arrangement is shown below in Figure 2. Attach pump, expansion tank, drain
valve, pressure relief valve, air vent, pressure temperature gauge and flow switch (as required). Air vents
should be installed at points just upstream from all drops in elevation of the piping system (high points).
A boiler installed above radiation level, or as required by an authority having jurisdiction, must be provided
with a low-water cut-off device at the time of boiler installation.
Figure 2 – Piping Arrangement