Installation / Operation Instruction Manual

9
Water Connections continued-
Heat Exchanger (see figure 1)
Before plumbing the heat exchanger inlet or outlet, remove the plastic plugs
from the fitting(s). The heat exchanger inlet and outlet fittings are identified on
top of the indirect water heater. Connect the heat exchanger inlet and outlet
lines with unions. Caution: The heat exchanger fittings contain special plastic
components. If sweat fittings are used, do not apply heat to the fittings.
Sweat tubing adapter before fitting adapter to the heat exchanger connections.
The heat exchanger is designed to be used in a closed system where the
maximum working pressure does not exceed 150 p.s.i. (1034 kPa) and a
maximum flow rate of (5) gallons per minute for the boiler circulation.
Provisions may be necessary to prevent thermal expansion. Consult local
codes and the boiler installation and operating instructions for proper system
flow and connection.
The heat exchanger can be used in conjunction with a hot water space heating
system by either using the hot water supply boiler as the heating means for the
circulating fluid or as a zone of the hot water supply boiler.
The heat exchanger has been designed for use with a non-potable water
heating system. DO NOT connect the heat exchanger connections to the
potable water supply.
WARNING
The internal heat exchanger and its’ components contained in this
appliance are designed for a maximum working pressure of 150 p.s.i.
(1034 kPa) and a maximum supply temperature of 180°F (82°C).
THESE LIMITS MUST NOT BE EXCEEDED UNDER ANY
CIRCUMSTANCES. Irreparable damage to the heat exchanger will
occur which will nullify the warranty.