Carrier 48EZ(N)-A Spezifikationen PDF herunterladen (Seite 13)

31. With control access panel removed, observe unit heating

operation. Watch burner flames to see if they are blue in ap-

pearance, and that the flames are approximately the same for

each burner (see Fig. 15).

32. Turn off unit, remove pressure manometer and replace the

1/8 in. pipe fitting on the gas manifold (see Fig. 14).

33. Attach warning label (P/N 48DU500076) to visible side of

gas valve.

34. Attach conversion label (P/N 48VL500285) above unit

rating plate on exterior of unit.

35. Attach completed conversion responsibility label (see Fig.

8, P/N 48VL500286) inside control access panel.

IMPORTANT: Restart unit and leak check all gas connections

including the main service connection, gas valve, gas spuds, and

manifold pipe plug.

FIRE AND EXPLOSION HAZARD

Failure to follow this warning could result in personal

injury and/or property damage.

Never test for gas leaks with an open flame. Use a

commercially available soap solution made specifically for

the detection of leaks to check all connections. A fire or

explosion may result causing property damage, personal

injury of loss of life.

36. After all leaks are eliminated, replace control access panel.

Table 6 - Single-Stage Sequence of Operations

Trial-for-Ignition Sequence: The ignition sequence is to immediately energize the inducer motor on a call for heat. Within approximately 5

sec of the call for heat, the gas valve will open and the igniter will spark. Seven sec will be allowed to prove flame sense on the far burner.

Flame-Proving: Once flame is proven, the control will wait an additional 45 sec to energize the indoor blower motor. On removal of the call

for heat, the gas valve will immediately shut down, the inducer motor will run for an additional 5 sec, and the indoor blower will run for an

additional 45 sec (n_ininmm).

Table 7 - Single-Stage Rated Heating Input, Propane Gas (2001-6000 ft [610-1829 m] Altitude)

NAMEPLATE INPUT (BTU/HR) RATED HEATING INPUT PROPANE (BTU/HR)

40,000 38,000

60,000 53,000

90,000 79,000

115,000 103,000

130,000 116,000

Pipe Plug /

Manifold

Fig. 14 - Single-Stage Burner Assembly

A07872

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Carrier 48EZ(N)-A Spezifikationen Seite 13