II.
ASSEMBLE SUPPLIES NEEDED FOR
INSTALLATION
The standard method of installation for units in manufactured
homes is with accessory base and roof assembly kit.
NOTE:
If installing any other kit, Installation Instructions will be
furnished with kit.
In addition to items included in base and roof assembly kit, the
following items are required to install unit. All sizes listed are
suggested.
•
Adhesive duct tape, U.L. 181 aluminum or equivalent.
WARNING:
Incorrect type of duct tape may be a fire
hazard. A failure to follow this warning could result in a
fire or explosion, and personal injury or death.
•
8 No. 10 X 1/2 rust-resistant, self-tapping sheet metal screws
(holding roof flashing).
•
Permanent sealant such as "mastic."
•
4 wood screws (base template).
•
2 No. 8 X 3/4 wood screws (unit to floor). Do not overtighten
and compress seal.
•
Silicone caulking (roof flashing)
•
Thermostat cable (18 gage wire minimum).
NOTE:
The number of conductors needed depends on type of
unit and thermostat being installed. Air conditioning units require
4- or 5-conductor wire depending on type of thermostat being
used. (Some thermostats require a C terminal connection for
proper operation.) Heat pump units require 6-conductor wire.
CAUTION:
Do not use thermostat wire with less than
the recommended number of conductors.
CAUTION:
Failure to adhere to indoor air, outdoor air,
and exhaust air requirements as listed in the following
sections will void unit warranty.
III.
SETUP
A.
Indoor-Air Duct Requirements
The MA1A and MH1A units are designed to be installed in 1 of
the following ways:
1. Installed flush with the wall. (See Fig. 4.)
2. Recessed behind a louvered door. (See Fig. 5.)
3. Installed in a closet with 1 or 2 return-air grilles. (See Fig.
6.) Refer to Installation of Unit Behind a Louvered Door or
Enclosed in Closet section for grille sizes.
Fig. 2—Unit Reference Drawing
DIMENSIONS (IN.)
UNIT SIZE
H
BLOWER TOP SCHEME
018
57
Scheme No. 2
024
57
Scheme No. 2
030
67
Scheme No. 1
036
67
Scheme No. 1
A95358
11
9
⁄
16
″
10
3
⁄
8
″
7
7
⁄
16
″
10
11
⁄
16
″
5
1
⁄
4
″
5
3
⁄
4
″
4
15
⁄
16
″
20
″
25
″
12
3
⁄
4
″
1
1
⁄
32
″
1
13
⁄
16
″
9
3
⁄
4
″
3
11
⁄
16
″
5
1
⁄
2
″
18
″
9
″
6
13
⁄
16
″
18
9
⁄
16
″
H
6
7
⁄
16
″
8
9
⁄
16
″
4
3
⁄
4
″
9
3
⁄
8
″
4
5
⁄
8
″
BLOWER TOP
SCHEME NO. 1
BLOWER TOP
SCHEME NO. 2
14-IN. ROUND
DRAIN
Fig. 3—Typical Installation
NOTE:
If a door is used to enclose unit, refer to "Installation of
Unit Behind a Louvered Door or Enclosed in Closet" in Setup
section.
A95338
WALL
THERMOSTAT
THERMOSTAT WIRES
FROM THERMOSTAT
BLOCK
OUTDOOR-AIR
EXHAUST
14
″
INSULATED
FLEX DUCT
PRIMARY
ELECTRICAL
SUPPLY
CONNECTIONS
OUTDOOR-AIR
PLENUM
INDOOR SUPPLY
DUCT
INDOOR
PLENUM
CONDENSATE DRAIN HOSE
(PIPE TO OUTSIDE OF STRUCTURE)
ROOF
ROOM AIR INTAKE
AND FILTER
—2—
