State 520 - Manual (Page 9)

Installation
9 │
Page
The dark squares indicate the direction the
dipswitches should be set to.
Left bank of dipswitches
Left bank of dipswitches

There is a 3” clearance from
the left and right sides of the
unit to combustible and non‐
combustible
surfaces. However, if any
portion or area of the surface
is exposed to the exhaust
fumes (i.e. directly to the sides
of the vent cap), that surface
must be at least 24” away.

Keep the clearances.
2,500 to 4,000 ft 4,000 to 5,000 ft Altitude
HIGH‐ALTITUDE INSTALLATIONS
Check the elevation where your water heater is installed. Set dipswitches shown in the table below
depending on the altitude. These dipswitches (No. 5 and No. 6) are on the computer board on the left
bank only.
0 to 2,500 ft
(DEFAULT)
Over 5,000 ft
Switch No.5 OFF ON OFF
Consult
our Technical
Services
Department
at 1‐877‐
737‐2840
Switch No.6 OFF OFF ON
INSTALLATION FOR OUTDOOR MODELS
1. Install the Outdoor model only in areas with mild, temperate climates.
2. The Outdoor model shall be wall‐mounted or mounted on a stand. Locate the Outdoor model in
an open, unroofed area and maintain the following minimum clearances:
DO NOT adjust any dipswitches on the right bank.
1
2
3
4
5
6
7
8
N O
9
1
0
N O
1
2
3
4
5
6
7
8
9
1
0
N O
1
2
3
4
5
6
7
8
9
1
0
Side 3”
Top 36”
Side 3”
Front 24”
Bottom 12”
Back 0.5”