Carrier 28QX - Manual (Page 30)

40FS INDOOR AIR HANDLER AND HEAT
PUMP UNIT
1. Run Refrigerant System Performance check.
2. Refer to appropriate instructions for further
details.
28QX INDOOR COIL
1 .
2 .
3.
4.
5.
Inspect and clean if necessary.
Change filter or clean with water and detergent
if filter is of permanent type.
Check freeze-up protector. It should be secure
and well insulated.
Open bleed valve on 28QX till water comes out.
This will purge air from system. If 28QX is not
at highest point in system, open field installed
valve.
Make sure all water pipes are fully insulated.
SOLAR PANELS
1. Clean and inspect glass for damage.
2. Inspect panels and associated piping for leaks.
3. Make sure that insulation on piping is in good
condition.
4. Inspect condition of framing:
• Is it level?
• Are panels at correct angle?
• Is flashing leak tight?
• Is frame secure to structure?
5. Make sure collector sensor is secure and well
insulated.
6. On 34GL systems, there is a pressure relief
valve on the highest point of return piping. Be
sure it is in good condition.
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