Placing The Boiler; Near Boiler Piping; Supply And Return Lines - Dunkirk Quantrum 90-50 Installation Manual

The boiler should be placed to provide the most direct connec-
tions to the combustion air, vent and system piping as possible.
Place crated boiler as close to selected location as possible and
uncrate boiler. The uncrated boiler may be moved into position
with an appliance dolly or 2-wheel hand truck. The dolly or
hand truck should be inserted under the left hand side of the
boiler. It is possible to slide the boiler for a short distance on a
smooth floor or surface.
Note: refer to manual section "locating the boiler" for
required clearances for servicing and maintenance.
When the installation of the boiler is for a new heating system,
first install all of the radiation units (panels, radiators, base-
board, or tubing) and the supply and return mains. After all
heating system piping and components have been installed,
make final connection of the system piping to the boiler. A hot
water boiler installed above radiation level must be equipped
with a low water cut off device. A periodic inspection is neces-
sary us is flushing of float type devices, per low water cut off
manufacturers specific instructions.
A. Supply And Return Lines
The packaged boiler unit is set up to receive 1 ¼" NPT supply
and return piping from top access. The boiler unit can also
be piped from the left side by turning the supply elbow, and
from the rear of the unit by removing plugs in the rear boiler
section.
NOTE: The circulator pump and isolation valves are fur-
nished within a carton inside the boiler cabinet and can be
installed at the installer preferred location.

PLACING THE BOILER

NEAR BOILER PIPING

Copper supply and return piping must NOT be installed di-
rectly into aluminum boiler section casings due to galvanic
corrosion between dissimilar metals. Iron or steel bushings
or pipe nipples should be used between copper system pip-
ing and boiler to make final connection to boiler. Also, the
use of dielectric unions is acceptable. The packaged boiler is
furnished with iron piping in the front boiler section for the
supply and return connections.
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CAUTION
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