A.O. Smith TWI 35-130, Instruction Manual

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8 Instruction manual TWI 35-130 G/TWI 45-190 G
Remark
Supplements or later adjustments and/or additions to any regulations,
requirements and guidelines are applicable at the moment of installing.
The three target groups for this manual are:
• (end)
users;
• installation engineers;
• service and maintenance engineers.
Symbols indicate on every page for which target group the information is
intended. See the table.
Symbols per target group
Service shall be carried out at least once a year both on the gas side and on the
water side. The frequency of the maintenance depends, among other things, on
the water quality, the average number of operating hours per day and the set
water temperature.
Remark
For determining the correct maintenance frequency, it is advised to have
the service and maintenance engineer check the gas side and the water side of
the device three months after installation. The maintenance frequency can be
determined on the basis of this check.
Remark
Regular maintenance lengthens the life of the device.
Both the end user and the service and maintenance engineer are responsible
for regular maintenance. They shall make clear appointments about this.
Remark
If the device is not regularly maintained, the warranty will become null
and void.
Introduction
(End) user
Installation engineer
Target group
Service and maintenance engineer
Symbol
1
1.4 Target groups
1.5 Maintenance