Carrier 19XL - Manual (Page 137)

Check Relief Devices
Be sure that relief devices have been piped to the outdoors in compliance with the latest
edition of ANSI/ASHRAE Standard 15 and applicable local safety codes. Piping connections
must allow for access to the valve mechanism for periodic inspection and leak testing.
19XL relief valves are set to relieve at the 300 psig (2068 kPa) machine design pressure.
Inspect Wiring
1. Examine wiring for conformance to job wiring diagrams and to all applicable electrical
codes.
Do not check voltage supply without proper equipment and precautions. Serious
injury may result. Follow power company recommendations.
WARNING
!
WARNING
CAUTION CAUTION
!
Do not apply any kind of test voltage, even for a rotation check, if the machine is
under a dehydration vacuum. Insulation breakdown and serious damage may
result.