2
PRE-INSTALLATION
General —
The 35L,N units are dual duct terminals avail-
able with factory-installed pneumatic, analog, and Carrier
Comfort Network® (CCN) Direct Digital Control (DDC)
control options. See Table 1. Figure 1 shows the basic box.
Figure 2 is an example of a unit identification label.
Table 1 — 35L,N Units
STORAGE AND HANDLING — Inspect for damage upon
receipt. Shipping damage claims should be filed with shipper
at time of delivery. Store in a clean, dry, and covered location.
Do not stack cartons. When unpacking units, care should be
taken that the inlet collars and externally mounted components
do not become damaged. Do not lift units using collars, sensors
or externally mounted components as handles. Do not lay
uncrated units on end or sides. Do not stack uncrated units over
6 ft high. Do not manhandle. Do not handle control boxes by
tubing connections or other external attachments. Table 2
shows component weights.
INITIAL INSPECTION — Once items have been removed
from the carton, check carefully for damage to duct connec-
tions, coils or controls. File damage claim immediately with
transportation agency and notify Carrier.
UNIT IDENTIFICATION — Each unit is supplied with a
shipping label and an identification label (Fig. 2).
INSTALLATION PRECAUTION — Check that construction
debris does not enter unit or ductwork. Do not operate the
central-station air-handling fan without final or construction
filters in place. Accumulated dust and construction debris
distributed through the ductwork can adversely affect unit
operation.
SERVICE ACCESS — Provide service clearance for unit
access.
CODES — Install units in compliance with all applicable code
requirements.
Table 2 — 35L,N Unit Weights
LEGEND
DDC —
Direct Digital Controls
NOTE: Data is based on the following conditions:
1. Unit casing is 22 gage.
2. Unit insulation is
1
/
2
-in. thick, 1.5-lb Tuf-Skin Rx™ dual density
fiberglass.
3. Units rated with standard linear flow sensor.
Warranty —
All Carrier-furnished items carry the standard
Carrier warranty.
CONTROL ARRANGEMENTS
The 35L,N dual duct units are offered with a wide variety of
factory-mounted controls that regulate the volume of air deliv-
ery from the unit and respond to cooling and heating load
requirements of the conditioned space. Stand-alone controls
will fulfill the thermal requirements of a given control space.
These devices are available in both pneumatic and electronic
arrangements. Carrier PIC (Product Integrated Controls) is a
communicating control that is integrated with the building sys-
tem. The PIC controls are compatible with the CCN system. A
number of DDC (Direct Digital Controls) control packages by
others are available for consignment mounting, as indicated.
Control offerings are:
35(L,N)A: Analog Electronic
35(L,N)C: CCN Direct Digital Electronic
35(L,N)P: Pneumatic
35(L,N)N: None or DDC by others
Each control approach offers a variety of operating func-
tions; a control package number identifies combinations of
control functions. The following listings contain the basic
function arrangements for each control offering. Because of the
UNIT
DESCRIPTION
35L
Basic unit, no mixing
35N
Premium unit, high mixing, constant volume flow sensing
UNIT
SIZE
BASE
UNIT
(lb)
WITH
PNEUMATIC
CONTROLS
(lb)
WITH DDC OR
ANALOG CONTROLS
(lb)
35L
4, 5, 6
29
37
47
7, 8
33
41
51
9, 10
41
49
59
12
51
59
69
14
67
75
85
16
75
83
93
22
129
137
147
35N
6
31
39
49
8
42
50
60
10
61
69
79
12
80
88
98
14
98
106
116
16
111
119
129
UP
FACTORY NO:
832889
ITEM:
003
MODEL NO:
35LN 06
COLD INLET CFM:
HOT INLET CFM:
HAND (COLD INLET LOC):
MIN
0
RC
SIZE:
C=06 H=06
MAX
VP:
VP:
MAX
.000
.000
MIN
.000
.000
D000 CTRL BOX E
CFGCD:
1A*0*0*0R*0606*D000*00*000*0000
ODS:
2181487
TAG:
Fig. 2 — Unit Identification Label
Fig. 1 — 35L Dual Duct Box
Summary of Contents for 35L Series
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