Selection Of Boiler Size - PENSOTTI DK2 Series Installation And User Manual

Pensotti Heatline Quatech Series
The electrical system to this unit should be supplied by a separate circuit provided with a fused
disconnect switch at the service panel.
All boiler installations must conform to the A.S.M.E. Boiler Code. If the boiler requires National
Board approval consult PNA, Inc. for special order. Many states and local authorities require
National Board inspection and registration for installation in buildings used for public assembly,
more than four (4) apartments, etc. It is important therefore that these instructions be followed
carefully and that a competent Pensotti Heatline Quatech Series dealer installs the boiler only.
The boiler should only be used as the primary heating source of a well-designed and installed
hydronic heating. It is the responsibility of the installer to ensure that this boiler is installed
properly and that all settings and adjustments are made before putting the unit into service.
The boiler is provided with a Lifetime Limited Warranty. A copy of the warranty is found on the
inside front cover.

Selection of Boiler Size

It is important that the boiler be properly sized for the job. The boiler should be of a sufficient
capacity to satisfy the heat load and the domestic hot water load if the unit is to be used for this
purpose.
Most heating systems are oversized. In fact, recent US Government DOE and HUD surveys found
existing equipment in the field to be as much as 400% oversized.
Reducing the firing rate of the boiler results in longer burner on-times increased A.F.U.E. and
provides significant savings for the consumer.
The improved A.F.U.E. of the Pensotti Heatline Quatech Series is highly effective heat generator
when it is matched to the heatloss of your home.
The first and only correct way to size the boiler is to determine the actual heat loss of the structure
to be heated. DO NOT base the heat load on the existing radiation since this may not be adequate.
If the boiler size is selected on this basis it may not heat the building properly. Also, take care not
too oversize, since this may lead to short cycling and inefficient operation.
After computing a complete and actual heat loss of the structure, you may now select the correct
boiler required. The correct boiler is selected by matching the boiler's Net I-B-R Rating to the
actual heat loss of the building.
If the calculated load exceeds the capacity of the largest size Pensotti Heatline Quatech Series
boiler, two or more units may be installed. Modular installations can be a sound investment
leading to an increase in fuel efficiency. Consult PNA, Inc. for further information on Modular
(multiple) boiler installations and larger boiler options.
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