8 716 473 148
2
Index
Index
1
Warning
2
2
Appliance details
4
2.1
Features
4
2.2
GWH-425-HNO specifications (Technical data)
4
2.3
Unpacking the GWH-425-HNO heater
5
2.4
General rules to follow for safe operation
5
2.5
Dimensions and installation clearances
6
3
Installation instructions
7
3.1
Introduction
7
3.2
Proper location for installing your heater
7
3.3
Heater placement and clearances
8
3.4
Mounting installation
8
3.5
Gas piping & connections
10
3.6
Measuring gas pressure
12
3.7
Water connections
12
3.8
Electrical connections
13
4
Operation instructions
14
4.1
For your safety read before operating your water
heater
14
4.2
Lighting instructions
14
4.3
To turn off appliance
14
4.4
Setting the water temperature
14
4.5
Electrical diagram
16
5
Maintenance and service
17
5.1
Maintenance intervals
17
5.2
Water valve
17
5.3
Pilot
17
5.4
Main burners
17
5.5
Vent assembly
17
5.6
Mineral scale build-up
17
6
Troubleshooting
18
6.1
Introduction
18
6.2
Pilot will not light
18
6.3
Pilot lights but the burners will not come on
18
6.4
Hot water temp fluctuates from hot to cold
18
6.5
Water is too hot
19
6.6
Water is not hot enough
19
7
Interior components diagram and parts list 20
7.1
Interior components
20
7.2
Components diagram
21
7.3
Parts list
22
8
Protecting the environment
23
9
Fifteen Year Limited Warranty
24
1
Warning
For your safety
Do not store or use gasoline or other flammable,
combustible or corrosive vapors and liquids in the
vicinity of this or any other appliance.
Warning:
If the information in this
manual is not followed exactly, a fire or
explosion may result causing property
damage, personal injury or death.
Warning:
Improper
installation,
adjustment, alteration, service or
maintenance can cause injury or
property damage. Refer to this manual.
For assistance or additional information
consult a qualified installer, service
agency or the gas supplier.
Upon completion of the installation,
these instructions should be handed to
the user of the appliance for future
reference.
Warning:
Carefully plan where you
install the heater. If a gas appliance is
not installed correctly, fatal accidents
can result from lack of air, carbon
monoxide poisoning or fire.
Warning:
Place the heater in a location
where water leaks will do NO DAMAGE
to adjacent areas.
