Related Manuals for Unitrol 8400
Summary of Contents for Unitrol 8400
- Page 1 PROCESS WATER CHILLER 8400, 8401, 8406, 8450, 8451, 8456 UNITROL ELECTRONICS, INC. 702 LANDWEHR ROAD NORTHBROOK, IL 60062 847-480-0115 info@unitrol-electronics.com...
- Page 3 1. Contact the Unitrol service department at 847-480-0115 to discuss the problem you are having with this chiller. 2. If Unitrol concurs that this is a warranty issue, and the chiller is more than 90 days from date of factory shipment, a Unitrol...
- Page 5 This Unitrol water chiller has been designed to operate under the most severe industrial conditions. Please observe the installation instructions to be sure that this chiller will provide years of superior service.
- Page 6 NOTES...
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Page 7: Table Of Contents
TABLE OF CONTENTS Installation……………………………………….………1 Wire and Fuse size chart…………………….………..4 Inter-module Wiring…………………………………….5 Plumbing Pipe insulation…………………………….……..6 Pipe Size Chart……………………………….…….6 Makeup Water………………….…………………..6 Installing Y-Strainer…………….…………………..7 Interconnecting Hose Connection………………...8 Initial Startup………………………….………………..9 Setting Temperature Controller…….……….……12 Temperature Control Operation……………12 Bypassing Chiller During Service………….13 Control Panel……………………………………….14 TROUBLE SHOOTING Diagnostic Lights Low Water Flow…...……………………………….15 Low Freon Fault…………………………………..16... - Page 8 MAINTENANCE RECORD DATE PROBLEM RESOLUTION...
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Page 9: Installation
INSTALLATION UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 THIS CHILLER IS DESIGNED FOR INSIDE INSTALLATION. ONLY CHILLERS PURCHASED WITH THE –OS (OUTSIDE) KIT CAN BE INSTALLED OUTSIDE IN AREAS WHERE THE AIR TEMPERATURE CAN FALL BELOW 45ºF, AND SUCH INSTALLATION WILL VOID THE WARRANTY. - Page 10 INSTALLATION UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 Install the chillers in a location that will keep the air intake (back of chiller with air filter) and air exhaust (front of chiller with expanded metal plate) at least 36” from the nearest wall. This is required to allow maximum air movement over the condenser coil.
- Page 11 INSTALLATION UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 CONNECT POWER HERE 7. LEFT MODULE: Remove the cover from the black junction box and run a flexible cable from a local fused disconnect through the grommeted hole in the basepan to the left of this junction box. The fused disconnect should be no more than 36”...
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Page 12: Wire And Fuse Size Chart
INSTALLATION UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 FUSE AND WIRE CHART: Each module requires a separate power line with an external 3-pole fused disconnect installed within 3 feet from each chiller. Install slow blow (time delay) fuses in the fused disconnect and use connecting wire per the chart below FOR EACH MODULE. -
Page 13: Inter-Module Wiring
INSTALLATION UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 INTER-MODULE WIRING BE SURE TO PROTECT THE WIRE TAGS ON THESE WIRES DURING INSTALLATION INTO THE JUNCTION BOX. INTERCONNECT CABLE IN RIGHT MODULE 1. Route the flexible cable interconnecting cable that comes from the... -
Page 14: Pipe Insulation
INSTALLATION UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 PLUMBING PIPE INSULATION ALL PIPES FROM THE CHILLER AND RETURNING TO THE CHILLER MUST BE INSULATED. COMMERCIAL SNAP-ON FOAM INSULATION IS SUFFICIENT FOR THIS PURPOSE. REASON #1: DURING WARM WEATHER THE INSULATION WILL PREVENT CONDENSATION FROM THE PIPES. -
Page 15: Installing Y-Strainer
INSTALLATION UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 TEE and shut off valve as shown in the plumbing diagram to allow the chiller to be isolated for service purposes. 2. Y-STRAINER FILTER: A flush valve is factory installed on the Y-strainer that was supplied loose with this chiller. -
Page 16: Interconnecting Hose Connection
INSTALLATION UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 INTERCONNECTING HOSE CONNECTION 1. Install the three water hoses that were supplied with this chiller. The two larger hoses have color tape installed on both ends. Connect these hoses to the hose barbs with the same color tape. -
Page 17: Initial Startup
INITIAL STARTUP UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 See photo on page 15 to locate warning lights that are used in this INITIAL STARTUP section. NEVER TOUCH ANY WIRE CONNECTIONS UNTIL YOU ARE SURE POWER HAS BEEN DISCONNECTED. USE A METER OR VOLTAGE... - Page 18 UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 7. The water pump pressure gauge should be showing pressures between 25 – 40psi. If lower or higher pressures are shown, turn chiller off and contact the Unitrol service department at 847-480-0115 to discuss this problem.
- Page 19 INITIAL STARTUP UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 21. Chiller should now be ready for operation. Contact Unitrol if there are any issues with this chiller. Call from the chiller. 22. Turn the ON/OFF switch OFF and replace all interior covers and exterior panels.
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Page 20: Setting Temperature Controller
INITIAL STARTUP UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 SETTING TEMPERATURE CONTROLLER The temperature displayed on the temperature controller is the water tank temperature. 1. Push the SEL button on the TEMPERATURE CONTROLLER. The SV light will glow, and the display will show the current selected temperature set point. -
Page 21: Bypassing Chiller During Service
CONNECTING LOAD TO CHILLER: TURN ON VALVES #3, #4, and M TURN OFF VALVES: #1, and #2 If any problems are incurred during this installation, contact the Unitrol service department at 847-480-0115. Please have the model number and serial number ready. -
Page 22: Control Panel
TROUBLE SHOOTING UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 SV light ON. When temperature CONTROL PANEL displayed is selected target temperature (“SV”). SV light OFF Water pump pressure When temperature displayed is water tank temperature. Push the SEL button to When ON, the Freon toggle between functions. -
Page 23: Diagnostic Lights
TROUBLE SHOOTING UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 DIAGNOSTIC LIGHTS See page 14 for location of diagnostic lights in this section. LOW WATER FLOW: Each module has a separate WATER FLOW switch located in their own enclosures. These are switches on a T with a gray junction box on top. -
Page 24: Low Freon Fault
TROUBLE SHOOTING UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 a. The overload on the water pump MOTOR STARTER K1 has tripped. The blue reset button on the overload can be pushed to reset the contactor. However the cause should be found and corrected. Otherwise this contactor will continue to trip. Tripping of the overload can be caused by one of the following conditions: i. -
Page 25: Low Water Level Fault
TROUBLE SHOOTING UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 conditions, or more frequently for factories that have a large dust or grinding dust content in the air. DIRTY CONDENSER COILS: If dirt has been trapped on the surfaces of the condenser coil’s fins, the ability for these surfaces to transfer air to the passing air stream will be greatly reduced. -
Page 26: Preventive Maintenance
PREVENTATIVE MAINTENANCE UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456 ONLY A CERTIFIED REFRIGERATION TECHNICIAN SHOULD BE ALLOWED TO SERVICE THE SEALED REFRIGERATION SECTION OF THIS CHILLER CLEAN THE CONDENSER: Inspect the evaporator coil fins (behind the air intake filter) every 3 months of operation. -
Page 27: Plumbing Installation Drawing
DOCUMENTS UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456... -
Page 28: Schematic Diagram, 460/3 Chillers
DOCUMENTS UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456... -
Page 29: Optional Dew Point Controller Schematic
DOCUMENTS UNITROL MODEL 8400, 8401, 8406, 8450, 8451, 8456... -
Page 31: Optional Fault Monitor System
OPTIONAL 8001-21 FAULT MONITOR SYSTEM... - Page 32 UNITROL ELECTRONICS, INC. 702 LANDWEHR ROAD NORTHBROOK, ILLINOIS 60062 847-480-0115 techsupport@unitrol-electronics.com...