Carrier 42C Series Product Data page 130

Guide specifications — 42D series
Fan Coil Unit — Ducted Models
HVAC Guide Specifications — 42D
Size Range: 600 to 2000 Nominal Cfm
Carrier Model Numbers:
42DA (Ceiling Furred-in)
42DC (Ceiling Furred-in with Plenum)
42DD (Vertical with Galvanized Casing)
42DE (Ceiling with Galvanized Casing)
42DF (Ceiling Exposed Cabinet)
Part 1 — General
1.01 SYSTEM DESCRIPTION
Horizontal, 2-pipe or 4-pipe or electric heat fan coil
unit for ducted installations; horizontal furred-in or
exposed ceiling model, ceiling cabinet, or vertical
model with galvanized casing for closet or utility
room installation.
1.02 QUALITY ASSURANCE
Units shall be ETL approved, except for 42DF. All
units shall be CSA (Canadian Standards Association)
approved, including 42DF. Each coil shall be factory
tested for leakage at 300 psig air pressure with coil
submerged in water. Insulation and adhesive shall
meet NFPA (National Fire Protection Association)
90A requirements for flame spread and smoke gen-
eration. All equipment wiring shall comply with NEC
(National Electrical Code) requirements. The 42DF
model shall be tested and certified in accordance
with AHRI Standard 440, latest edition.
1.03 DELIVERY, STORAGE AND HANDLING
Unit shall be handled and stored in accordance with
the manufacturer's instructions.
Part 2 — Products
2.01 EQUIPMENT
A. General:
Factory assembled, horizontal or vertical blow-thru
ducted fan coil unit. Unit shall be complete with
water coil(s), fan(s), motor(s), drain pan, and
all required wiring, piping, controls and special
features. Standard insulation shall be dual density
fiberglass insulation.
B. Horizontal, Furred-in Base Unit (42DA):
1. Outside panels shall be galvanized steel, lined
on the inside with
tion and a 1 in. long collar for supply duct
connection.
2. The drain pan shall be constructed of 18-gage
galvanized steel extending the entire length and
width of coil(s) and pitched for drainage. The
inside surface of the drain pan shall be coated
with closed-cell, fire retardant foam. An exten-
sion drain pan shall be provided for installation
at the jobsite under the factory-furnished elec-
tric water valves.
130
1 / -in. thick fiberglass insula-
2
C. Horizontal Base Unit with Plenum for Concealed
Installation (42DC):
Unit shall have a factory-installed, 18-gage galva-
nized steel plenum section and 1-in. throwaway fil-
ter. The plenum shall be either bottom or rear
return, lined with 1 /
2
and include a removable panel to provide access to
the fan/motor assembly.
D. Horizontal, Enclosed Unit for Concealed Installation
(42DE):
Unit shall be constructed of galvanized steel with
removable panels for access to internal compo-
nents. Units have 1 /
2
track with 1-in. throwaway filter, 1-in. supply collar,
and 2 1 / -in. return-air collar on rear of unit for duct
2
connection.
E. Horizontal Cabinet Unit for Exposed Installation
(42DF):
Unit shall be constructed of steel with arctic white
re-coatable baked enamel finish. Cabinet shall be
lined with 1 / -in. fiberglass insulation and have
2
removable bottom access panel. Unit shall include
hinged bar type return-air grille on rear of unit with
1-in. throwaway filter and integral double deflection
supply-air grille.
F. Vertical, Enclosed Unit for Closet Installation
(42DD):
Unit shall be constructed of galvanized steel with
1
/ -in. fiberglass insulation. Unit shall include front
2
return-air opening with 1-in. throwaway filter and
1-in. supply-air duct collar.
G. Fans:
Direct-driven, double-width fan wheels shall have
forward-curved blades, and be statically and dynami-
cally balanced, with scrolls and fans constructed of
galvanized steel.
H. Coils:
Standard base unit shall be equipped with a 4-row
coil for installation in a 2-pipe system. Additional
coil depth and circuiting shall be provided for instal-
lation in a 4-pipe system as described in the Special
Features section. All coils shall have
tubes and aluminum fins (10 fins per inch) spacing;
Coil fins are mechanical bonded to tube joints. The
copper tubes comply with the ASTM (American
Society for Testing and Materials) B-75. The fin
thickness is 0.0045-in. and tube thickness is 0.016-
inch. All coils are tested with air under water and are
suitable for design working pressures of 250 psig at
220 F. Burst tested at 300 psig.
I. Controls and Safeties:
The fan motor(s) shall be equipped with integral,
automatic reset thermal overload motor protection.
-in. thick fiberglass insulation
-in. fiberglass insulation, filter
1
/ -in. copper
2