Trane RT-SVX10C-EN Roof Curb and Ductwork, Se,Sl, Sahf Sshf Sfhf Sxhf Sehg Sfhg Sxhg HF/G

Installation (Continued)

Table 3-3

Typical Unit & Curb Weights

		Typical Unit Operating Weight (1)						Roof Curb
Unit		SE,SL,						Max. Weight (3)
Size	SAHF	SSHF	SFHF	SXHF	SEHG	SFHG	SXHG	SAHF	S*HF/G
C20	4360	4690	4970	4580				490	510
C25	4520	4860	5130	4750				490	510
C30	5220	5590	5840	5460				490	510
C40	6890	7400	7880	7240				515	550
C50	7890	8450	8900	8290				515	550
C55	8140	8690	9170	8540				515	550
C60	9320	9650	10120	9480				610	640
C70	9860	10160	10640	10040				610	640
C75	9860	10160	10640	10040				610	640
C90					14730	15400	14580		770
D11					15310	15940	15160		770
D12					15730	16370	15560		770
D13					16080	16710	15930		770
		Typical Unit Operating Weight (2)						Roof Curb
Unit		SE,SL,						Max. Weight (3)
Size	SAHF	SSHF	SFHF	SXHF	SEHG	SFHG	SXHG	SAHF	S*HF/G
C20	4650	5000	5270	4860				490	510
C25	4830	5180	5440	5060				490	510
C30	5570	5930	6200	5800				490	510
C40	7290	7820	8280	7650				515	550
C50	8350	8900	9380	8740				515	550
C55	8600	9160	9640	9010				515	550
C60	9840	10150	10620	10010				610	640
C70	10370	10690	11160	10560				610	640
C75	10370	10690	11160	10560				610	640
C90					15460	16050	15240		770
D11					15950	16590	15810		770
D12					16380	17010	16220		770
D13					16730	17380	16580		770

Note: 1. The weights shown in this table represents the typical unit operating weights for the heating/cooling function indicated with an economizer and exhaust fan installed.

2.The weights shown represents the typical unit operating weights for the heating/cooling function indicated with an economizer, exhaust fan with supply & exhaust VFD installed.

3.Roof curb weights include the curb and pedestal.

Roof Curb and Ductwork

The roof curbs for 20 through 130 Ton units consists of two main components; a pedestal to support the unit’s con- denser section and a "full perimeter" enclosure to support the unit’s air handler section.

Before installing any roof curb, verify;

1.That it is the correct curb for the unit,

2.That it includes the necessary gaskets and hardware,

3.That the purposed installation location provides the required clearance for proper operation.

4.Insure that the curb is level and square. The top surface of the curb must be true to assure an adequate curb-to-unit seal.

Step-by-step curb assembly and installation instructions ship with each Trane accessory roof curb kit. Follow the in- structions carefully to assure proper fit-up when the unit is set into place.

Note: To assure proper condensate flow during operation, the unit (and curb) must be as level as possible. The maximum slope allowable for rooftop unit applications, excluding SSH_'s, is 4" end-to- end and 2" side-to-side. Units with steam coils (SSH_'s) must be set level!

If the unit is elevated, a field constructed catwalk around the unit is strongly recommended to provide easy access for unit maintenance and service.

Recommendations for installing the Supply Air and Return Air ductwork joining the roof curb are included in the curb instruction booklet. Curb ductwork must be fabricated and installed by the installing contractor before the unit is set into place.

Note: For sound consideration, cut only the holes in the roof deck for the ductwork penetrations. Do not cut out the entire roof deck within the curb perimeter.

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