Table of Contents
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OPERATING INSTRUCTIONS
GAS-FIRED DOUBLE-EFFECT
ABSORPTION CHILLER-HEATER
This product is a gas-fired absorption unit which provides chilled water for cooling or
hot water for heating in central plant type air conditioning systems. Units with nominal
refrigeration capacities of 30, 40, 50, 60, 80, and 100 tons are complete with operating
and safety controls.
When this equipment is correctly applied, installed in accordance with Yazaki
INSTALLATION INSTRUCTIONS, and properly maintained, it can provide many years
of trouble-free operation.
CH-K30, 40, 50, 60, 80, 100
CONTENTS
Page
2
2
3
4
6
7
STARTUP & MAINTENANCE
7
DATA SHEET
7
7
7
Page
8
8
8
8
9
10
10
11
11
13
14
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Table of Contents
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Summary of Contents for Yazaki CH-K30
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Page 1: Table Of Contents
30, 40, 50, 60, 80, and 100 tons are complete with operating and safety controls. When this equipment is correctly applied, installed in accordance with Yazaki INSTALLATION INSTRUCTIONS, and properly maintained, it can provide many years of trouble-free operation. -
Page 2: General
Warranty. operation general maintenance If the equipment does not operate as requirements of Yazaki CH-K gas-fired expected, check the Troubleshooting Guide double-effect Absorption Chiller-Heaters. in these instructions BEFORE calling your Please read ALL instructions carefully and Yazaki Authorized Service Provider (ASP) observe precautions. -
Page 3: Heating Operation
water is cooled to 44.6°F while the (7°C) refrigerant vapor attracted concentrated solution dripping over the absorber tubing bundle. Absorber A deep vacuum in the absorber is maintained by the affinity of the concentrated solution from the LGE for the refrigerant vapor formed in the evaporator. -
Page 4: Controls
CONTROLS GENERAL INFORMATION A control panel is built into each controls and interlocks can be explained by (Figure 3) absorption chiller-heater and is located on your ASP. the control box, behind the hinged, lower Once COOLING or HEATING operation is front-left panel. - Page 5 Figure 4 – CONTROL BOX LAYOUT Fuse Rating Chart Symbol Amps Replacement Bussmann Model GLQ-3, GMQ-3 or GMQ-3-2/10, Rated 300vac. Fuji Model FGAO-2, Rated 250vac. Fuji Model FGAO-2, F11, F12 Rated 250vac. Fuji Model FGAO-2, F31, F32 Rated 250vac. FB11, Fuji Model FGAO-2, FB12 Rated 250vac.
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Page 6: Control Adjustments
THRP Settings (amps) Unit Size 208v 230v K100 Figure 6 – SOLUTION PUMP THERMAL OVERLOAD CONTROL ADJUSTMENTS The leaving chilled water temperature is Similarly, the leaving hot water standard controlled to a standard rating point of rating point is 131°F . -
Page 7: Operation
OPERATION COOLING REMOTE CONTROL To engage the unit in Cool mode, press The chiller-heater can be Enabled or the COOL button on the Control Panel. Disabled remotely. It can also be instructed Then choose between RUN and REMOTE to change between Cool and Heat modes setting. -
Page 8: Maintenance
GENERAL INFORMATION MAINTENANCE SHOULD For your safety, keep the area around PERFORMED TRAINED the equipment clear and free of combustible EXPERIENCED PERSONNEL. Your Yazaki materials, gasoline and other flammable Authorized Service Provider can help substances. DO NOT obstruct service (ASP) -
Page 9: Chemical Maintenance
*** Great care must be taken to ensure the chiller-heater’s vacuum section. Just that no oil enters the Yazaki chiller- because the vacuum pump has stopped heater! Permanent damage could result producing bubbles in the water bucket does from even a small amount of oil being NOT mean the vacuum level is adequate. -
Page 10: Winter Shutdown
SHUTDOWN The fluids within the chiller-heater itself appropriate measures to ensure the fluids in need no preparation for freezing conditions. all fluid circuits are protected from freezing Only the fluids in the chilled water and (glycol, heat tape, etc.) cooling water circuits need to be addressed If a chiller-heater is to be shut down long- during potentially freezing conditions. -
Page 11: Water Quality
WATER QUALITY It is the End User’s responsibility to have the limits specified in Table 1. The water quality in cooling water analyzed and chemically treated as the chilled water, cooling water, and heat medium often as necessary so that it conforms to the circuits shall not exceed the following limits: COOLING CHILLED... - Page 12 Generator (HGE) GLS reports open. Ignored for the first 30 seconds and Manual solution level error ignored after 20 minutes of operation. Unit locks out. WT sensor reads below 14°F or above 212°F (-10°C) WTO sensor error Auto (100°C). Optional seismic switch is open when it should be Seismic switch error Manual closed.
- Page 13 Please send a copy of any maintenance data sheets to Yazaki Energy Systems, Inc., at the address, FAX number, and/or email address listed on the last page of this document.
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Page 14: Warranty
6 of this Limited Express Warranty. UNDER NO CIRCUMSTANCES SHALL YESI BE LIABLE FOR 1. SCOPE OF COVERAGE. The Limited Express Warranty of Yazaki CONSEQUENTIAL OR INCIDENTAL DAMAGES. If the limitation Energy Systems, Inc. (“YESI”) applies to the initial retail of liability fails the essential purpose, CUSTOMER’s liability... - Page 16 Email: yazaki@yazakienergy.com Web: http://www.yazakienergy.com This symbol on the product’s name plate means it is listed by UNDERWRITERS LABORATORIES, INC. Yazaki reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. KUL-OM1-1A-1011...
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