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Table 3 — Physical Data — 42D Series Units
*Calculate Operating Weight of unit: Shipping Weight + Coil Water Weight x Number of Coil Rows.
Table 4 — Physical Data — 42S Series Units
*Calculate Operating Weight of Unit: Shipping Weight + Coil Water Weight x Number of Coil Rows.
†42SJ units require two filters.
PRE-INSTALLATION
Unpack and Inspect Units —
Remove shipping wraps
from all units. Check the shipment against shipping order.
Make sure that furnished only items, such as thermostat,
grilles, etc., are accounted for, whether packaged separately or
shipped at a later date. If shipment is damaged or incomplete,
file claim with transportation company and advise Carrier im-
mediately.
Protect Units from Damage — The equipment must
always be properly supported. Temporary supports used during
installation or service must be adequate to hold the equipment
securely. Equipment should always be stored in the proper ori-
entation as marked on the carton. To maintain warranty, protect
units against adverse weather, theft, vandalism, and debris on
jobsite. Equipment covered in this manual is not suitable for
outdoor installations. Do not allow foreign material to fall into
drain pan. Prevent dust and debris from being deposited on mo-
tor and fan wheels. Manufacturer's warranty is void if foreign
material is allowed to be deposited on the motor or blower
wheels of any unit.
Prepare Jobsite for Unit Installation — To save
time and to reduce the possibility of costly errors, set up a com-
plete sample installation in a typical room at jobsite. Check all
critical dimensions such as pipe, wire, and duct connection
requirements. Refer to job drawings and product dimension
drawings as required (see Fig. 1-36). Instruct all trades in their
part of the installation.
Identify and Prepare Units — Be sure power require-
ments match available power source. Refer to unit nameplate
and wiring diagram.
1. Check all tags on unit to determine if shipping screws are
to be removed. Remove screws as directed.
2. Rotate the fan wheel by hand to ensure that the fan is
unrestricted and can rotate freely. Check for shipping
damage and fan obstructions.
UNIT SIZE 42D 0608101214161820
NOMINAL AIRFLOW (cfm) 600 800 1000 1200 1400 1600 1800 2000
SHIPPING WEIGHT (lb)*
42DA 64 79 93 110 119 129 137 155
42DC 94 107 150 169 174 178 195 220
42DD 150 163 176 195 220 235 240 247
42DE 135 155 165 184 199 215 232 243
42DF 157 167 177 199 215 229 249 258
COIL WATER WEIGHT
(Approx lb per row of coil)
1.31.61.92.32.73.03.43.7
COILS
FPI 10 fins/inch
Coil Face Area (sq ft) 1.62.12.53.03.54.14.65.0
MOTOR (qty) 11122222
BLOWER (qty) 11122222
FILTERS
Nominal Size (in.) (1-in. thick)
42DA NA
42DC 14 x 21 14 x 26 14 x 30 14 x 35 14 x 40 14 x 45 14 x 50 14 x 54
42DD
(Front Return) 12
3
/
4
x 21 12
3
/
4
x 26 12
3
/
4
x 30 12
3
/
4
x 35 12
3
/
4
x 40 12
3
/
4
x 45 12
3
/
4
x 50 12
3
/
4
x 54
(Bottom Return) 12
3
/
4
x 21 12
3
/
4
x 25 12
3
/
4
x 29 12
3
/
4
x 34 12
3
/
4
x 39 12
3
/
4
x 44 12
3
/
4
x 49 12
3
/
4
x 53
42DE 14 x 14
3
/
4
14 x 19
3
/
4
14 x 23
3
/
4
14 x 28
3
/
4
14 x 33
3
/
4
14 x 38
3
/
4
14 x 43
3
/
4
14 x 47
3
/
4
42DF 14 x 14 14 x 20 14 x 24 14 x 28 14 x 34 14 x 38 14 x 44 14 x 48
Qty
1
SUPPLY DUCT COLLAR 1-in.
PIPING CONNECTIONS
(Sweat - 4-Row)
Inlet (in. OD)
5
/
8
7
/
8
1
1
/
8
Outlet (in. OD)
5
/
8
7
/
8
1
1
/
8
UNIT SIZE 42S 03 04 06 08 10 12
NOMINAL AIRFLOW (cfm) 300 400 600 800 1000 1200
SHIPPING WEIGHT (lb)*
42SG,SU 180 225 240 260 280 305
42SH 202 247 262 286 311 336
42SJ 360 450 480 520 560 610
COIL WATER WEIGHT
(Approx lb per row of coil) 1.6 1.6 2.3 2.3 3.1 3.1
COILS
FPI 14 fins/inch
MOTOR (qty)
42SG,SH,SU 111111
42SJ 222222
BLOWER (qty)
42SG,SH,SU 111111
42SJ 222222
FILTERS
Nominal Size (in.) (1-in. thick) 12
1
/
2
x 24
1
/
4
16
1
/
4
x 26
3
/
4
20
1
/
2
x 29
1
/
4
Qty 1†
PIPING CONNECTIONS
Inlet (in. OD)
1
/
2