Boiler Systems And Operation; General - IBC HC 33-124 Installation And Operating Instructions Manual

HC SERIES BOILERS HC 13-50, HC 23-84, HC 29-106, HC 33-124, HC 20-125, HC 33-160

2.0 BOILER SYSTEMS AND OPERATION

2.1

GENERAL

The HC series modulating condensing boilers are designed to heat both the
indoor space and an indirect domestic hot water tank. The boiler's unique heat
exchanger design incorporates separate copper water ways for space heating
and for domestic hot water generation.
The boiler's control is equipped to provide outdoor reset control for the space
heating load and also can provide a set-point water temperature for the space
heating load. Installing the outdoor sensor is optional but recommended for
additional efficiency.
The boiler is equipped with a factory installed pump. The pump is pre-wired and
will operate with any call for space heating and when heating an IBC indirect
water heater. The pump will not operate with a call for domestic hot water using
the boiler's internal domestic hot water tankless coil.
The boiler pump will operate for 10 seconds every 24 hours to help prevent pump
from seizing. The pump will be energized 24 hours after the last call for heat and
every 24 hours after that until the next call for heat.
The DC series boiler can generate domestic hot water in several ways.
The boiler is equipped with an electronic boiler controller, which ignites the
burner and continuously monitors the flame throughout each call for heat. The
control also displays the current operating conditions of the boiler and any error
messages should a problem occur.
The boilers controller also provides frost protection. When the boiler's heat
exchanger becomes too low the burner switches on to keep the heat exchanger
warm. Please ensure that the condensate trap is protected from freezing. The
boiler must be installed indoors in a heated space.
2-1
BOILER SYSTEMS AND OPERATION