Instruction manual

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Figure 3: Recommended Piping for Combination
Heating and Cooling (Refrigeration) System
B. Install Pressure Relief Valve. See Figures 8 and 9.
Pressure Relief Valve must be installed with spindle in
the vertical position. Installation of the relief valve must
be consistent with ANSI/ASME Boiler and Pressure
Vessel Code, Section IV.
C. Install Drain Valve in return piping. See Figures 8
and 9.
D. Oil, grease, and other foreign materials which accumu-
late in new hot water and a new or reworked system
should be boiled out, and then thoroughly flushed. A
qualified water treatment chemical specialist should be
consulted for recommendations regarding appropriate
chemical compounds and concentrations which are
compatible with local environmental regulations.
E. After the boiler and system have been cleaned and
flushed, and before refilling the entire system add
appropriate water treatment chemicals, if necessary, to
bring the pH between 7 and 11.
F. CONNECT TANKLESS HEATER PIPING AS
SHOWN IN FIGURE 1. See Table 1 for Tankless
Heater Rating.
Figure 4: Recommended System Bypass Piping
Figure 5: Schematic Tankless Heater Piping