12
Field-installed accessories
Automatic air vents — Automatic air vents have fiber
washers which allow air in the pipes to pass through, auto-
matically bleeding the system, and eliminating the need to
manually remove air from the system. When wet, washers
swell and seal the system.
Drip lips (removable drain extension) — Drip lips are
frequently used when valves are added after unit installa-
tion and space limitations will not permit use of an
extended drain pan. The drip lip is placed on the end of
the drain pan and is pitched toward the pan to ensure
proper drainage. The drip lip gives positive control of con-
densate from valves and controls.
Panels, frames, and grilles — Panels, frames, and
grilles on the 42S Series units can be chosen in a wide vari-
ety of combinations to suit room decorating requirements
and allow access to the unit for maintenance. Discharge
grilles are double deflection type, aluminum finish or
painted. Return-air access panels containing return-air
grilles are available in five different types as illustrated on
pages 114 and 115.
PANELS, FRAMES AND GRILLES
42D SEISMIC COMPLIANCE OPTION COMPATIBILITY CHART
OPTION DESCRIPTION
UNIT
42DA 42DC 42DE 42DF 42DD
2-Pipe Hydronic Coil
Configurations
3-Row Coil I I I/O I/O I/O
4-Row or 5-Row Coil I I I/O I/O I/O
6-Row Coil I I I/O I/O I/O
7-Row or 8-Row Coil I I I/O I/O N/A
4-Pipe Hydronic Coil
Configuration
3/1, 3/2 or 4/1 Split Coil I I I/O I/O I/O
4/2 Split Coil I I I/O I/O I/O
6/1 or 6/2 Split Coil I I I/O I/O N/A
Electric Heat All electric heat options I I I/O I/O I/O
Service Switches All service switch options I I I/O I/O I/O
Coil Options
Stainless steel coil wrapper I I I/O I/O I/O
Coil air vents (manual or automatic) I I I/O I/O I/O
Coil drains I I I/O I/O I/O
PSC Motors 115V, 208V, 230V, 277V, Single Phase, 60 Hz I I I/O I/O I/O
Control Packages
All control package options EXCEPT Fan Coil
Open and CCN Controllers (Digit 16 cannot be
W or Z)
I I I/O I/O I/O
Individual Valves and
Valve Packages
All valve options EXCEPT modulating valves
and valve packages containing modulating
valves
I I I/O I/O I/O
Filters
1-inch throwaway or permanent washable NA I I/O I/O I/O
1-inch pleated MERV 8 NA I I/O I/O I/O
Drain Pan
Standard drain pan I I I/O I/O I/O
Stainless steel drain pan I I I/O I/O I/O
Tell-Tale I I I/O I/O I/O
Drip Lip I I I/O I/O I/O
Extended main drain pan (galvanized or stain-
less steel)
I I I/O I/O I/O
Condensate overflow switch (option 26-A) I I I/O I/O I/O
Cabinet Insulation
Standard Tuf-Skin fiberglass insulation I I I/O I/O I/O
Foil-faced fiberglass insulation I I I/O I/O I/O
LEGEND
I — International Building Code (IBC) Compliance
O — Office of Statewide Health Planning and Development (OSHPD)
Pre-Approved (OSP-0229-10)
NOTES:
1. For Horizontal Units (42DA, DC, DE, DF) - Seismic compliance
option includes factory-supplied, field-installed isolation hanger
and seismic restraints required for a given unit.
2. For Vertical Unit (42DD) - Seismic compliance option offers hard
mounting or isolated mounting. For hard mounting, expansion
anchors with all brackets is factory supplied, field installed. For
isolated mounting, required isolation mounting system is factory
provided, field installed.
3. Direct expansion (DX) coils and steam coils are not compatible
with seismic compliance option.
4. Electronically commutated motors (ECM) are not compatible with
seismic compliance option.
PANEL
NO.
DESCRIPTION
1
Standard, 18-gage galvanized steel. Coated with baked-on
Arctic White enamel finish. Attached to unit with
1
/
4
turn
fasteners.
2
18-gage galvanized steel. Coated with baked-on Arctic White
enamel finish. Includes access door for concealed unit-
mounted controls.
3
Bar-type extruded aluminum with frame matching double
deflection supply grille. Fastens to wall and unit with 1
1
/
2
in.
long screws.
4
and
5
18-gage galvanized steel. Coated with baked-on Arctic White
enamel finish. Frame mounted on sheetrock with screws.
Panel mounted in frame with
1
/
4
turn fasteners.
All Each panel provides access to all internal components.
Options (cont)
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