19
Important:
Heat Sensitive Sensor.
The temperature Sensor must be removed or a wet
rag must be wrapped around the suction line between
the Sensor and the braze joint to protect the Sensor
from failure due to overheating.
STEP 7
- Braze refrigerant line connections.
Note:
The suction line must be insulated prior to
brazing the line set to the air handler stubs.
1. Pull back the insulation before brazing the suction
line.
2. Wrap the Gas Temperature Sensor (GT) with a wet
rag.
3. Braze the refrigerant line connections.
Important:
Care must be taken during brazing to
avoid damage to unit components.
STEP 8
- Pressurize the refrigerant lines and
evaporator coil to 150 PSIG using dry nitrogen.
150 PSIG
STEP 9
- Check for leaks by using a soapy solution or
bubbles at each brazed location.
