Reznor YDSA Unit Installation Manual Manual de usuario Pagina 11
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Form I-Y, P/N 273646R6, Page 11
5.3.1 Down ow Roof
Curbs
Both Option CJ31 and CJ34 are 16" (406mm) high roof curbs designed for vertical
(down) discharge. These curbs include integral cross supports for supply air and
optional return air duct work.
FIGURE 5 - Layout, Dimensions, and Weights of Option CJ31 & CJ34 Roof Curbs
Supply
Air
Return
Air
Downflow Curb Options CJ31 and CJ34
2x6
Wood
Nailer
Insulation
16”
(406mm)
Cross-Section
View
(Control End
of Unit)
(Inlet Hood End)
(Condenser Side of Unit - Base extends
30” / 761mm beyond this side of curb.)
Return
Air
(DxF)
Supply
Air
(DxE)
Unit
Airflow
A
B
D
EF
Top View
C
G H
Curb
Layout
Option Model and Size
Cabinet
Size
A B C D
E** F** G H
(Outside of Curb Rails) (Area Inside the Curb*)
CJ31
No Energy
Wheel
YDHA & YDMA 060,
090, 120, 150
1
119-11/16
(3040)
43-7/16
(1103)
115-15/16
(2945)
39-11/16
(1008)
31
(787)
17
(432)
25-3/4
(654)
14-29/32
(379)
YDHA & YDMA 180,
210, 240 YDSA 120, 150
2
123-11/16
(3141)
50-11/16
(1287)
119-15/16
(3046)
46-15/16
(1192)
31
(787)
19
(483)
25-13/16
(656)
18-13/16
(478)
YDHA & YDMA, 300,
360 YDSA 180, 210
3
154-11/16
(3929)
63-11/16
(1618)
150-15/16
(3834)
59-15/16
(1522)
31
(787)
21
(483)
28-7/32
(717)
28
(711)
CJ34
With Energy
Wheel
YDHA & YDMA 060,
090, 120, 150
1
128
(3251)
43-7/16
(1103)
124-1/4
(3156)
39-11/16
(1008)
31
(787)
17
(432)
25-3/4
(654)
23-1/4
(591)
YDHA & YDMA180, 210,
240 YDSA 120, 150
2
132
(3353)
50-11/16
(1287)
128-1/4
(3257)
46-15/16
(1192)
31
(787)
19
(483)
25-13/16
(656)
27-1/8
(689)
YDHA & YDMA, 300,
360 YDSA 180, 210
3
154-11/16
(3929)
63-11/16
(1618)
150-15/16
(3834)
59-15/16
(1522)
31
(787)
21
(483)
28-7/32
(717)
28
(711)
Weights of Downow Roof
Curb Option CJ31 and CJ34
by Cabinet Size
Roof
Curb
Cabinet 1 Cabinet 2 Cabinet 3
lbs kg lbs kg lbs kg
Option
CJ31
237 108 257 117 322 146
Option
CJ34
248 112 268 122 322 146
* Area enclosed by the roof curb must comply with clearance to
combustible materials. If the roof is constructed of combustible
materials, area within the roof curb must be ventilated, left open,
or covered with non-combustible material which has an “R” value
of at least 5. If area within curb is left open, higher radiated sound
levels may result. NOTE: If installing a unit with a high efciency,
condensing gas-red heat section, the area within the curb must be
left open.
** When cutting only duct openings, cut “E” & “F” dimensions 1/4”
(6.4mm) in from duct opening to allow clearance. Cut the curb rail
sides of the duct opening(s) parallel to the curb rail. For Cabinet
Size 1, measure a maximum of 1-1/2” (38mm) in from the side rail.
For Cabinet Size 2, measure a maximum of 3/4” (19mm) in from
the side rail.
*** See chart on page 68 for cross-reference by Model Size or
Model and Heat Size to Cabinet Size.
Dimensions - inches (mm)
- WARNING: 1
- 1.0 General 2
- 1.2 General 3
- Information 3
- 1.3 Warranty 3
- 1.4 Installation 3
- Controls Options: 5
- 4.0 Clearances and Dimensions 6
- 4.2 Dimensions 7
- 4.2 Dimensions (cont’d) 8
- Side View 9
- 5.0 Mounting 10
- (Control End 11
- (Inlet Hood End) 11
- 5.0 Mounting (cont'd) 12
- Roof Curb 13
- Option CJ55 16
- Return Air 17
- Supply Air 17
- 5.4 Rigging and 19
- 6.0 Mechanical 20
- Cabinet Size Dim “A” 21
- 1 32.44 / 824 21
- 2 40.31 / 1024 21
- 3 49.39 / 1255 21
- 6.0 Mechanical (cont’d) 22
- 7.0 Electrical and 23
- 7.2 Supply Wiring (cont’d) 24
- FIGURE 18 - High and Low 26
- Electrical Compartment 26
- • Allows same access as 27
- • Shipped with the unit for 28
- 7.5.3 Field Wiring 29
- (cont’d) 29
- • P/N 256957 30
- • P/N 42782 30
- Variable Frequency Drive 31
- Setting Fan CFM 31
- Condenser Fan Control 31
- Compressor Amps/ 31
- 8.0 Controls 32
- 8.2 Supply Fan 33
- 8.1 System 33
- Controller 33
- 8.0 Controls (cont'd) 34
- 9.0 Optional 35
- Equipment 35
- Sections 35
- 9.1.2 Power Exhaust 36
- Option PE__ 36
- 9.2 Gas Heat 37
- 9.2 Gas Heat Section (cont’d) 38
- Single Heat Section 39
- Manifold Assembly with 39
- 2-Stage Option AG71 39
- Manifold Pressure Tap 39
- Venter Control 43
- Pressure Switch 43
- Gas Pressure Safety 51
- Switches, Option BP4 51
- Section 54
- Control Access 55
- Condenser 55
- High-Efficiency 57
- Vent(s) 57
- 9.3 Electric Heat 58
- 10.2.2 Additional Gas 59
- Heat Checklist Prior to 59
- Startup: 59
- Alarm Prg Esc Up Enter Down 60
- (continued) 61
- Balance Airow 62
- 10.4 Other Control Settings 64
- 10.5 Checklist 66
- Size and Type 68
- Appendix (cont’d) 69
- Start-Up Information Form 74
- References 75
- I) Form I-Y (Version .5) 76
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