Carrier 59SP5A Installation, Start-Up, Operating And Service And Maintenance Instructions page 71

Since t he furnace uses a condensing heat exchanger, some w ater
willaccunmlate inthe unit a s aresult ofthe heat transfer process.
Therefore, once i t has been o perated, it cannot beturned offand
leftoffforanextended period o f time when temperatures will
reach 32°F(0°C)or lower unless w interized. Follow these
)rocedures towinterize your f urnace:
UNIT COMPONENT DAMAGE HAZARD
Failure to follow this caution may result in damage to the
furnace and other property damage.
Do not use ethylene glycol (automotive antifreeze coolant or
equivalent). Failure of plastic components may occur.
1. Obtain propylene glycol (RV/swinmfing pool antifreeze or
equivalent).
2. Turn off gas and electrical supplies to your fllmace.
3. Remove fllmace control door.
4. Remove the top unused robber plug from the port on the
collector box opposite the condensate trap. See Fig 57.
5. Connect a field supplied 3/8-in. (9.5-ram) ID tube to the
open port on the collector box.
6. Insert a field supplied flmnel into the tube.
7. Pour 1 quart of anti-freeze solution into the flmnel/tube.
Antifreeze should mn through the inducer housing, overfill
condensate trap and flow to an open drain.
8. Replace the robber plug in the port on the collector box.
9. Remove the nfiddle unused robber plug from the port on the
collector box opposite the condensate trap. See Fig. 57.
10. Repeat Steps 5 through 8.
11. If a condensate pump is used, check with pump manufacturer
to verify pump is safe for use with antifreeze used. Allow
pump to start and pump anti-freeze to open drain.
12. Replace main door.
13. When fllmace is re-started, flush condensate pump with clear
water to check for proper operation before re-starting fllmace.
14. Propylene glycol need not be removed before re-starting
furnace.
0 o o L _0
)0 _0
2-in.
(50.0)
216-in,
_ (4.6)
2.5 mm +/- .75 ram)
/
Fig. 56 - Igniter Position - Side View
Al1272
Fig. 57 - Priming Condensate Trap
Al1392
g
(644)
Fig. 55 - Igniter Position - Top View
Al1405
71