
Simultaneous Heating & Cooling Chiller for Solar Applications
$ 25,076.80 CAD
Payments:
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Simultaneous Heating & Cooling (SHC) Chiller for Solar Applications. Primary DC 380V / Secondary AC 208/230-1-50/60
1-Equipment:
A. General:
- Unit is factory assembled and tested.
- Assembled on heavy gauge steel mounting/lifting rails.
- Contained within the unit cabinet shall be all factory wiring, piping, controls, refrigerant charge (R410a), POE oil and special accessories required prior to start up.
- Brass body strainers with 20 mesh screen and blow down shall be supplied in cabinet as a field installable accessory.
B. Unit Cabinet:
- Composed of heavy gauge galvanized steel casing with a baked polyester powder coat ing.
- Capable of withstanding 500-hour salt spray test in accordance with the ASTM (U.S.A.) standard.
C. Condenser Fans:
- Five blade glass reinforced polypropylene (PP) petals mounted on a cast aluminum hub construction and shall be dynamically balanced and corrosion resistant.
- Discharge air is vertical.
- Motors and blades shall be protected by coated steel wire safety guards.
D. Fan Motors:
- Condenser fan motor is variable speed, brushless DC type.
- Condenser fan motors is Totally Enclosed Air Over (TEAO), use Class B insulation, and permanently lubricated ball and/or sleeve bearings.
- Condenser fan motors is internally overload protected with automatic reset.
E. Compressor:
- Unit contains one Emerson/Copeland variable speed DC scroll compressor.
- Direct current DC, 900-7,200 rpm (15-120Hz).
- Compressor motor shall be suction gas cooled.
- External motor protection.
- Externally protected by low and high pressure cutout devices and discharge temperature sensing thermistor.
- Individual vibration isolators.
- Compressor compartment is internally insulated using noise reducing elastomeric foam insulation.
F. Solar Inverter:
- Unit contains one Pika 7601C Power Core Inverter matched with S2501 PV links at solar panels.
G. Pump:
- Unit is capable of incorporating a field installed chilled liquid solution pump internally. (Space restricted)
- Unit has chilled liquid solution piping to the exterior of the cabinet.
H. Evaporator (Cooling):
- Evaporator has one refrigerant circuit and one liquid solution circuit.
- Evaporator rated for a refrigerant side working pressure up to 550 psig.
- Evaporator rated for a water side working pressure up to 150 psig.
- Single pass, ANSI type 316 stainless steel, brazed plate construction with copper/nickel brazing material.
I. Condenser (Heating):
- Condenser has one refrigerant circuit and one liquid solution circuit.
- Condenser rated for a refrigerant side working pressure up to 550 psig.
- Condenser rated for a water side working pressure up to 150 psig.
- Single pass, ANSI type 316 stainless steel, brazed plate construction with copper/nickel brazing material.
J. Evaporator/Condenser (Cooling/Heating):
- Condenser coil is air-cooled with integral sub-cooler.
- Constructed of rifled copper tubing mechanically bonded to aluminum fins.
- Cleaned and dehydrated.
- Factory leak tested to 650 psig.
K. Refrigerant Circuits:
- Each circuit contains liquid line strainers, electronic expansion valves, solenoid valve, check valve, refrigerant charge of R410a, and POE compressor oil.
2-Controls and Safeties
- Chiller is completely factory wired and tested.
- Temperature control shall be based on leaving liquid solution temperatures.
- 1. Temperature accuracy shall be + - 1°F
- Controls is capable of variable speed control.
- Controls includes the following components:
- 24vac transformers to serve all controllers, relays, and control components.
- Microprocessor based liquid solution temperature controller.
- Leaving water temperature thermistors.
- Chilled liquid solution flow switches.
- All functions shall be addressable, logic, code, and algorithm controlled.
- Ethernet port supplied for communication and monitoring.
- Compatible with Building Automation Systems (BAS) using BACnet protocol.
- Unit is equipped with all necessary components in conjunction with the control system to provide the following protection:
- Low refrigerant pressure.
- High refrigerant pressure.
- Water side cold & hot flow.
3-Operating Characteristics
3.1-Temperatures
- Unit is capable of starting and running at outdoor temperatures from 0°F to 120°F.
- Unit is capable of initial startup in cooling mode with a maximum 80°F entering fluid temperature and ambient not above 95° F.
- Maximum sustained entering fluid solution temperature to the evaporator shall not exceed 70°F in cooling mode.
- Minimum 10% glycol solution is required in all applications. For outdoor temperatures below 32°F, reference the propylene glycol manufacture’s data table of field installed polypropylene glycol solution concentrations.
3.2-Electrical Requirements
- Primary DC electrical power supply shall enter the unit at a single location.
- Secondary AC electrical power supply if used, shall enter the unit at a single location.
- Electrical power supply shall be rated to withstand 90°C operating ambient temperature.