Space Heating - IBC DC 23-84 Installation And Operating Instructions Manual

WARNING
The correct 12KΩ temperature
sensor (or aquastat) must be
used to operate the indirect
water heater properly. If the
incorrect sensor is used
the domestic hot water may
overheat causing serious
injury or death.
2-8
DC SERIES COMBI BOILERS DC 23-84, DC 29-106, DC 33-124, DC 33-160
2.5.2 Domestic Hot Water with an IBC Indirect Water
Heater
The DC series boiler can be connected to an IBC indirect water heater. Connect
the IBC indirect water heater's boiler supply and boiler return connections to the
boiler's primary loop (see Figure #28, Page 1-25). Properly sized piping must be
installed. A properly sized pump must also be installed between the boiler and
the IBC indirect water heater. The IBC indirect water heater is shipped with a
water temperature sensor designed to be used with the SL or VFC series boilers
only. The correct DC series temperature sensor is available from your local IBC
wholesaler or you can use an aquastat.
2.6

SPACE HEATING

2.6.1 Overview
The DC series boiler is designed to be installed in a primary/secondary type
piping system. The boiler comes complete with a factory installed boiler pump.
The pump is designed to circulate heating system water through the boiler's heat
exchanger and primary loop piping only. The building's distribution piping system
requires a dedicated pump or pumps to provide circulation of the space heating
water through the heating system. The building pump or pumps will require a
separate control system or relays to operate the pumps.
Zoning of the space heating system can be accomplished many ways. Several
control packages are available from your local wholesaler and offer an easy
method of connecting the zoning system to the boiler. Example piping and
electrical drawing are available at www.ibcboiler.com
The boiler supplies heat to the space using an Outdoor Reset Curve. With an
outdoor sensor installed the boiler will automatically adjust its space heating
water temperature based on the parameters programmed into the boiler. See
Page 2-4 for parameter information. If there is no outdoor sensor installed the
boiler will assume the outdoor temperature is 32°F (0°C). The boiler will supply a
water temperature based on the outdoor reset curve and an outdoor temperature
of 32°F (0°C).
INSTALLATION AND OPERATION INSTRUCTIONS