Eco-King HWB-299, Инструкция по установке и обслуживанию

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E93.1801EN171 HWB installation manual 99
18 COMMISSIONING THE WATER HEATER
First: flushing the water heater with water
After installation of the water heater the first step, before commissioning, is to flush the water heater and the whole
heating installation with fresh water to remove pollution, debris and other materials that might cause a blocking.
This must also be done with heating installations, where only the water heater is replaced.
Existing and new heating systems must be cleaned with a hydronic system cleaner; see additional information in
section 7.12. System cleaner must be drained and thoroughly flushed with clean water to remove any residual
cleaner, prior to installing a new water heater. NEVER leave a system cleaner for longer than recommended by
the manufacturer of the cleaner. Never put system cleaner inside the water heaters heat exchanger.
Second: filling & venting the water heater and the system
After flushing the water heater and the installation the system can be filled with fresh water. Fill the water heater
and the heating system by using the appropriate filling valve. The water pressure of the system normally lies
between 21.8 and 40 psi (1.5 and 2.0 bar) – see § 7.20 ‘Water pressure’
The water heater has an automatic air vent situated inside the water heater. This vent is always open, and the
venting outlet goes via a plastic tube through the bottom to the outside. Shortly after putting the water heater into
operation, check the water pressure and add or remove some water to obtain the required pressure.
During the commissioning, make sure that no water can enter the water heater and make contact with the electrical
parts.
Third: check the water flow
Before starting the water heater ensure the pump is installed and operating correctly and that there are no ob-
structions or closed valves that could prevent water flow through the heat exchanger.
Mounting Condensate Trap
When mounting the bottom part of the condensate trap, before commissioning the water heater and/or after
maintenance, it must
ALWAYS be completely filled with water.
This is a safety measure: the water in the condensate trap keeps the flue gases
from leaking out of the heat exchanger via the condensate drain.
When the water heater receives a heat demand the electronics will start the operation of the water heater. Before
the water heater is used, the water heater must be adjusted and set at the minimum and maximum load.
NOTICE: Always ensure the water heater pump is functioning correctly and that there is flow through the heat
exchanger after working on the water heater or system.
WARNING
The condensate trap must always
be filled to the edge with water,
before replacing to the unit.
WARNING