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Designs, materials, weights and performance ratings are approximate and subject to change without notice. Visit
armstrong
international.com for up-to-date information.
11
This unit is supplied with a relief valve sized in accordance with ANSI/ASME Heater and Pressure Vessel Code, Section IV. The relief
valve is installed near the hot water outlet. If the valve supplied is replaced, the pressure rating of the valve must not exceed the
listed working pressure of this appliance, and must be rated to the proper BTU/hr capacity of the water heater.
DO NOT, under any
circumstances, thread a cap or plug into the relief valve!
Explosion, serious injury or death may result!
To prevent water damage,
the relief valve piping must be directed to the floor or an open drain, but not connected directly. There must be a 6” space between
the outlet of relief valve piping and drain or floor. Do not hook up to drain system directly without an air gap. Protect from freezing.
Place no other valve between the relief valve and the unit. Do not install any reducing couplings or other restrictions in the discharge
line. The discharge line must allow complete drainage of the valve and line. Manually operate the relief valve at least once a year.
Also, care must be exercised when choosing the location of this appliance, where leakage from the relief valve, leakage from related
piping, or leakage from the tank or connections, will not result in damage to the surrounding areas, or to the lower floors of the
building. A water heating appliance should always be located in an area with a floor drain or installed in a drain pan suitable for water
heating appliances. Under no circumstances, shall Armstrong Hot Water, Inc. be held liable for any such water damage whatsoever.
Pressure Relief Valve
Figure 1.4 - How To Remove The Front Cover
DATE
REV.
NAME
CHANGES
REVISION
LOCATION:
Document created with version :
CONTRACT N° :
SCHEME
03
L1
Main Panel
Main Power Terminal Strip
1
2016.0.0.114
User data 2
1
0
Brian
Brian
11/15/2017
10/10/2017
Updated wire colors & AWG
X1
1
2
3
4
120VAC L1
120VAC L2
Neutral
Ground
240VAC Split Phase
Customer Supplied
X2
1
2
3
4
X3
1
2
3
4
CR
1
A1
A2
03
CR1
12
11
14
42
41
44
03
CR2
12
11
14
42
41
44
CR
2
A1
A2
X4
1
2
3
~
M
P1
Motor
Pump
04-3
04-3
04-5
04-6
04-7
04-5
04-5
X5
1
2
3
SGV1
SGV2
1
2
3
1
2
3
599 Only
12
11
14
03
42
41
44
03
12
11
14
03
42
41
44
03
04-11
04-7
18
White
18
White
18
Black
18
Black
18
Red
18
Bl
ac
k
18
Gr
een
18
Red
18
Bl
ac
k
18
Gr
een
18
Bl
ac
k
18
Red
18
Black
18
Black
18
Black
18
Red
18
Red
18
Green
18
White
18
Red
18
Black
F1
1. Turn off power to unit
SERVICE
RESET
LO
TEMPERATURE
CH
OFF
ON
-
+
WARNING!
WARNING!
Before removing screw and opening front cover,
main power supply must be disconnected (shut off).
HIGH VOLTAGE - RISK OF ELECTRICAL SHOCK!
2. Remove bottom screw(s)
General Information - continued
WARNING! DO NOT, under any circumstances, thread a cap or plug into the relief valve!
Explosion, severe personal injury, death, or major property damage may result.
WARNING! The ABH is certified as an indoor appliance. Do not install the ABH outdoors or
location where it will be exposed to freezing temperatures. This includes all related piping
and components. If the ABH is subjected to flood water or submersed in water, the ABH must
be replaced.
NOTICE! Condensation Removal: This is a condensing, high efficiency appliance, therefore
condensation removal must be addressed to avoid damage to surrounding
area or appliance. See Venting Section for Condensate Requirements (page 26).