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INSTALLATION INSTRUCTIONS
GAS-FIRED DOUBLE-EFFECT
ABSORPTION CHILLER-HEATER
This product is a gas-fired double-effect 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 150 and 200 tons are complete with operating
and safety controls. The chiller-heater is fitted with a low NOx burner, automatic ignition
system, power combustion blower, and proportional firing control.
GENERAL
CONTENTS
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2
2
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4
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9
10
11
12
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CH-MG150
CH-MG200
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14
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15
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22
26
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Summary of Contents for Yazaki CH-MG150
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Page 1: Table Of Contents
CH-MG150 INSTALLATION INSTRUCTIONS CH-MG200 GAS-FIRED DOUBLE-EFFECT ABSORPTION CHILLER-HEATER This product is a gas-fired double-effect 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 150 and 200 tons are complete with operating and safety controls. -
Page 2: General
All precautions in THE YAZAKI WARRANTY WILL BE these instructions, as well as on tags and VOIDED FOLLOWING labels attached to the unit, must be RESTRICTIONS observed to ensure the safety of the... -
Page 3: Standard Specifications
STANDARD SPECIFICATIONS SPECIFICATIONS English CH-MG150 CH-MG200 (Metric) Cooling 1,800 2,400 MBTU/hr (kW/hr) (527.5) (703.4) Capacity Heating 1,245 1,660 MBTU/hr (kW/hr) (364.9) (486.5) Inlet °F 53.6 Chilled Water (°C) (12) Temperature Outlet °F 44.6 (°C) Inlet °F 132.8 Hot Water (°C) -
Page 4: Equipment Dimensions
EQUIPMENT DIMENSIONS Figure 1 – MG150 Dimensions... - Page 5 EQUIPMENT DIMENSIONS Figure 2 – MG200 Dimensions...
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Page 6: Internal Wiring Diagram
INTERNAL WIRING DIAGRAM... - Page 8 KRCH relay has been replaced by the KCH relay. Table 2 – Internal Wiring Diagram Legend...
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Page 9: Installation
Should any damage have occurred, do frame only at the provided holes. not proceed with installation until the other points should be used for horizontal Yazaki distributor has been notified and pulling. any required remedial actions have been completed. The MG-Series units are too large for the typical fork lift. -
Page 10: Rigging
RIGGING The Yazaki chiller-heater is designed lugs. Bring the four individual rigging for overhead rigging with openings in the cables together at a point high enough cabinet and holes in the equipment frame that the angle between the rigging line intended for such use. -
Page 11: Center Of Gravity
Operating Model Center of Gravity Position Weight A - inches B - inches C - inches (mm) (mm) (mm) (kg) CH-MG150 40.2 34.3 67.3 13,700 (1020) (870) (1710) (6,215) CH-MG200 43.7 36.2 65.7 16,200 (1110) (920) (1670) (7,350) CH-MG150 CH-MG200... -
Page 12: Installation Clearances
INSTALLATION CLEARANCES Figure 7 – Installation and Service Clearances... -
Page 13: Location
LOCATION Particular care must be taken when be able to perform such maintenance placing the machine so as to provide and repair tasks. adequate clearance for access to each Finally, as with all mechanical devices, side of the machine. the unit will have to be replaced Maintenance is mostly done through someday. -
Page 14: Leveling
Yazaki more than one gas-fired appliance. Keep documentation. What has been provided in mind that whatever combustion air here are only guidelines to help toward supply is present, it must be capable of proper installation of the unit. -
Page 15: Venting
Yazaki has no kit for this. Warranty may Figure 12 – Factory Vent Cap be void on the Yazaki chiller-heater if such a kit is used, but not installed or In cases where an extended vent is applied correctly. - Page 16 Model Exhaust Gas Volume separation (460mm) between the ceiling and any horizontal run of at 392°F (200°C) vent pipe. CH-MG150 531 CFM (14.5 m³/min) In instances where multiple units must CH-MG100 707 CFM (20.0 m³/min) be vented, and individual venting is...
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Page 17: Piping
Yazaki Strainers in each circuit, particularly the chiller-heater. cooling water circuit, are recommended 2. Do not install any valves in expansion as well. -
Page 18: Typical System Design
TYPICAL SYSTEM DESIGN Figure 18 – Example of Single Module Installation MULTIPLE MODULES Figure 19 – Example of Multiple Module Installation... -
Page 19: Chilled/Hot Water Piping
CHILLED/HOT WATER PIPING A balance valve should be installed at the chilled/hot water outlet and a stop valve should installed chilled/hot water inlet. Both valves should be placed in close proximity to the chiller-heater. After thoroughly testing for leaks, insulate the piping circuit, ensuring an adequate vapor barrier is obtained. -
Page 20: Freeze Protection
7. Use of glycol can cause the unit to operate at a slightly higher internal temperature since Glycol may be permitted for use in heat transfer is dampened. This may result in Yazaki chiller-heaters with certain depletion of inhibitor at a faster rate than what restrictions and observations. -
Page 21: Gas Supply Piping
GAS SUPPLY PIPING Before connecting the gas supply pipe, check the UNIT NAMEPLATE to confirm that it is compatible with the gas type available. Note that there is no LP version of the CH-MG UL Series. The gas piping must be selected and installed in accordance with local building codes and the National Fuel Gas Code (ANSI Z233.1, latest edition). -
Page 22: Electrical
Pressure Specific Multiplier Multiplier Drop Gravity 0.577 0.815 0.926 1.16 0.867 1.42 0.817 1.64 0.775 1.83 2.58 3.16 3.65 4.47 5.15 (Actual capacity of the gas line) = (Pipe Size MBtu/hr Capacity ) times [chart-left] (Actual Gas Pressure Drop Multiplier [middle] times (Actual Specific Gravity Multiplier [right... - Page 23 Yazaki High voltage connections should be Remote Control Panel. However, these made to L1, L2, L3, and G. If the voltage terminals can also be used to interface supply has a “wild leg”...
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Page 24: Typical Field Wiring Diagram
status of pumps or motor. Terminal 3 Terminal 5 should receive the return should receive the return signal from the signal from cooling tower chilled/hot water pump overload auxiliary overload auxiliary contacts. If the return contacts. Terminal 4 should receive the signal is not sensed, the unit will return signal from the cooling water immediately generate an error code... - Page 25 Figure 25 – Optional Remote Control Pad...
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Page 26: Water Quality
Table 6 INSTALLATION CHECK & REQUEST FOR STARTUP After the absorption chiller-heater has send it to the ASP or to Yazaki Energy been installed, piped, and wired as Systems, Inc., at least 3 weeks prior to described in these instructions, but the required startup date. - Page 27 YAZAKI CH-MG SERIES CHILLER-HEATER INSTALLATION CHECK AND REQUEST FOR START-UP Yazaki Authorized Service Provider: Address: Project Name: Project Address: Model No: Serial No: Anticipated Startup Date: A. CHILLER-HEATER D. VENTING □ 1. Unit placed on foundation 1. Factory-provided vent cap installed □...
- Page 28 Email: yazaki@yazakienergy.com Web: www.yazakienergy.com LISTED This symbol on the product’s nameplate 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. MGUL-II-1D1-0914...