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Important:
Heat Sensitive Sensors.
The Gas 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 it
from failure due to overheating.
STEP 5
- 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 suc-
tion 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 and wiring.
STEP 6
- Pressurize the refrigerant lines and evapo-
rator coil to 150 PSIG using dry nitrogen.
150 PSIG
STEP 7
- Check for leaks by using a soapy solution
or bubbles at each brazed location.
Wet Rag on
Gas Temperature
Sensor (GT)
