Install Instructions

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107750-01 - 9/17
Example Pump Parameter selections (continued):
XII. Operation F. Changing Adjustable Parameters (continued)
Single Boiler with Supply Piped IWH, System and DHW Wired to Master
CAUTION: It is the installers responsibility
to select boiler piping congurations that provide the proper ow rates and performance for the boiler and indirect water heater.
Parameter Selections:
System Pump = “Central Heat, Optional Priority” Boiler Pump = “any demand” DHW Pump = “Primary Loop Piped IWH” DHW Priority Enable is optional Explanation: When call for Domestic Hot Water is received the DHW pump is turned on and the boiler pump is turned on. This piping arrangement permits the system pump to run or not run when there is a domestic hot water call for heat. Domestic hot water priority is optional. It is permissible for the domestic and system pumps to run at the same time. The boiler pump must run for every call for heat.