in order to keep condenser water supply isolated from brazed plate heat exchanger (BPHX). water-source unit shall have a dry contact to enable/disable a 2-way solenoid valve. A high voltage output shall also be available from the water-source unit (0.2A, 250V max) to operate a 2-way solenoid valve. water-source unit shall have a 0V 10V output to operate a flow control – valve. water-source unit shall have a dry contact available to operate external water pumps. water system shall have a maximum working pressure of 285 PSI. system inlet temperatures shall be within the temperatures noted below. Inlet Water Temperature 1 Circulating Type Operation Standard Usage Range Water Usage Range Limit Heat Source Cooling Loop 68°F 95°F 50°F 113°F – – Water Heating Cooling 59°F 95°F 50°F 113°F – – Ground Heat Ground 23°F 113°F – Source Loop Heating 41°F 77°F – (14°F 113°F) 2 – 1 When inlet water temperature is below 50°F, appropriate anti-freeze protection must be used according the manufacturer’s guidelines. 2 Strict management of anti-freezing concentration is required. Consult the VRF manufacturer before application. Electrical: water-source unit electrical power shall be 208/230 volts, 1 phase, 60 hertz. 208/230 VAC water-source unit shall be capable of satisfactory operation within voltage limits of 187-228 volts (208V/60Hz) or (230V/60Hz). water-source unit shall be controlled by integral microprocessors. control circuit between the indoor units and the water-source unit shall be 0.5VDC - 7VDC completed using stranded, annealed copper conductor, two-core, 16 AWG, shielded cable to provide total integration of the system (F1/F2). ELECTRONIC EXPANSION VALVE KIT (SINGLE ZONE) FOR HEAT PUMP
in order to keep condenser water supply isolated from brazed plate heat exchanger (BPHX). water-source unit shall have a dry contact to enable/disable a 2-way solenoid valve. A high voltage output shall also be available from the water-source unit (0.2A, 250V max) to operate a 2-way solenoid valve. water-source unit shall have a 0V – 10V output to operate a flow control valve. water-source unit shall have a dry contact available to operate external water pumps. water system shall have a maximum working pressure of 285 PSI. system inlet temperatures shall be within the temperatures noted below. Type Circulating Water Operation Inlet Water Temperature 1 Standard Usage Range Usage Range Limit Heat Source Water Loop Cooling 68°F – 95°F 50°F – 113°F Heating Ground Heat Source Ground Loop Cooling 59°F – 95°F 50°F – 113°F Heating 41°F – 77°F 23°F – 113°F (14°F – 113°F) 2 1 When inlet water temperature is below 50°F, appropriate anti-freeze protection must be used according the manufacturer’s guidelines. 2 Strict management of anti-freezing concentration is required. Consult the VRF manufacturer before application. Electrical: water-source unit electrical power shall be 208/230 volts, 1 phase, 60 hertz. 208/230 VAC water-source unit shall be capable of satisfactory operation within voltage limits of 187-228 volts (208V/60Hz) or (230V/60Hz). water-source unit shall be controlled by integral microprocessors. control circuit between the indoor units and the water-source unit shall be 0.5VDC - 7VDC completed using stranded, annealed copper conductor, two-core, 16 AWG, shielded cable to provide total integration of the system (F1/F2). ELECTRONIC EXPANSION VALVE KIT (SINGLE ZONE) FOR HEAT PUMP
DVM%20S%20Water%201%20Phase%20Guide%20Spec_DVM%20S%20Water%201%20Phase%20Guide%20Spec.docx