openings in the door. Each opening should have a free area of not less than 1 square
inch per 1,000 BTU (140 square inch per US GPH) of the total input for all appliances
in the enclosure. One opening located, near top of enclosure and one near the bottom.
BASEMENT
Where a boiler is installed in a full basement, infiltration is normally adequate to
provide air for combustion.
In buildings of tight construction where the basement windows are weather stripped,
one opening communicating with a well-ventilated attic or with the outdoors should be
provided. The opening should have a minimum free area of 1 square inch per 1,000
BTU per hour of total input for all appliances in the enclosure.
SPECIAL CONDITIONS
Where a boiler is located in an area where the operation of exhaust fans, kitchen
ventilation systems, clothes dryers, or fireplaces may create conditions of
unsatisfactory combustion or venting, special provisions should be made for additional
air for combustion, as specified by local authority.
TRIM ASSEMBLY
Install the drain valve in the 1-¼” tapping on the backside of the boiler. Install the
safety relief valve in the ¾” tapping on the backside of the boiler. The safety relief
valve should be piped to a place of safe discharge. Install your air bleed connection
into the 90° elbow mounted in the top ¾” tapping behind the smoke collector box.
Install the altitude gauge in the ¼” tapping provided on the front in the coil plate.
PACKAGED BOILER
Controls and burner are installed and pre-wired at the factory. Install Relief Valve as
noted in Trim Assembly.
BOILER PIPING
Minimum supply and return pipe size of not less than 1¼” to be used.
The recommended locations of pumps, expansion tanks, etc. are illustrated in Figures
2, 3, & 4. Relief valve discharge and drain valve piping should be piped to a safe place
of discharge. ALL plugs and water connections should be checked for leaks upon
installation and annually.
TANK-LESS WATER HEATING PIPING
The tank-less heater may be connected as shown in Figure 4. A mixing valve (not
supplied) may be used to reduce the water temperature at kitchen or bathroom taps.
When connecting to the domestic water coil a pressure temperature relief valve must
be installed.
High temperature water for a dishwasher may be obtained by piping as shown.
THE NUTS THAT SECURE THE TANKLESS COIL FLANGE SHOULD BE TIGHTENED
BEFORE THE BOILER IS FILLED WITH WATER, AFTER INITIAL FIRING AND EVERY
YEAR DURING ANNUAL MAINTENANCE. DETERIORATION DUE TO COIL GASKET LEAKS
SHALL VOID WARRANTY.
