FORM 155.32-ICOM2.EN.UL
SECTION 3 - HANDLING, STORAGE, INSTALLATION AND REASSEMBLY
ISSUE DATE:1/10/2018
JOHNSON CONTROLS
29
USE OF OIL
If an oil leak is present do not operate the machine until the leak is repaired and stopped.
Use only the fuel specified on the unit name plate.
Inspect the exhaust duct periodically to check for gas leaks.
If black and white smoke is produced, stop the machine and contact your local Johnson
Controls Service Office for assistance.
Do not block the outer cover suction port or exhaust port. This can cause oxygen
starvation.
VIBRATION AND ISOLATION DETAILS
Before installing the unit, fit rubber vibration isolators to the unit base as shown below. Use
liners to adjust the levelness of the unit. For unit dimension, see
and
.
RUPTURE DISK AND RELIEF PIPING
For YHAU units, this device is a metallic, one time use, rupture disk burst rated at 7.0
PSIG, +/- 2.0 PSI (48.2 kPa, +/- 13.8 kPa).
The size of the rupture disc will depend on
the chiller capacity.
The rupture disk will protect the chiller’s integrity should there ever be a tube rupture or in
the very unlikely event that the unit’s refrigerant vapor pressure gets too high. Unlike vapor
compression cooling machines that relieve refrigerant vapor, if the rupture disk bursts,
absorption machines could expel a vapor and a liquid.
WARNING: During service and maintenance work, be sure to turn OFF the main circuit
breaker (MCB1) and follow all required Lockout and/or Tagout procedures. Close the
main valve of the fuel gas line. Failure to close the gas line may cause electric shock
and burn.
NOTE: The ANSI/ASHRAE 15-2001 safety standard code was recently revised to include
absorption chiller relief devices. Please read and follow these instructions closely to en-
sure the chiller installation is compliant to the revised code.
LD20186
Nut
Washer
Foundation Bolt
Base
Rubber Vibration
Isolator
Sole Plate
Nut
Washer
Filling with Mortar
Foundation Bolt
Rubber Vibration
Isolator
Sole Plate