JOHNSON CONTROLS
102
FORM 155.35-ICOM2.EN.CE/GB (1018)
DATE: 10/30/2018
SECTION 7 – MAINTENANCE
LD26802
Exhaust Gas Absorption Chiller
(Two Exhaust Gas Outlet Flanges)
Exhaust Gas
By-pass Damper
Exhaust Gas
Inlet Damper
Purge Blower
Other equipment shall be
prepare by customer
Cooling Water
Chimney
Gas Engine
Radiation Heat Exchanger
(out of scope)
Chilled Water
Exhaust Gas
Outlet Damper 1
Cooling
Tower
Cooling
Tower
Exhaust Gas
Outlet Damper 2
Temperature gauge (or sensor)
Pressure gauge
Expansion joint
WATER QUALITY CONTROL
Use the following guidelines to be sure of the highest
water quality control standards:
• Limit the water pressure to the maximum safe
working pressure for chilled / hot water and cool-
ing water.
• Install a 10-20 or finer mesh strainer in the chilled
/ hot and cooling water piping.
• Install a thermometer and a pressure gauge in the
inlet and the outlet of the chilled / hot and cooling
water piping.
• Install tapping (with valve) for chemical cleaning
of the inlet and the outlet of the cooling water and
chilled / hot water piping.
• Install an air vent valve at the highest part of the
piping and a drain valve at the lowest part of the
piping.
• Keep the cooling water temperature higher than 20
°C while the chiller-heater operates.
• Turn the cooling tower on and off.
You may also bypass the cooling water
through a three-way valve to keep the
cooling water at the designed conditions.
FIGURE 38 -
CHILLED / HOT WATER, COOLING WATER AND WASTE EXHAUST GAS SYSTEM (EXAMPLE
OF TWO EXHAUST GAS OUTLET FLANGE)
• Replace the water regularly and control the wa-
ter quality. Operating the chiller-heater for longer
than 15 days with low quality water causes corro-
sion and scale production.
• Make sure the shut off valves installed at the
chiller-heater inlet and outlet of the chilled/hot
and cooling water are open on the inlet side.
If the chiller-heater runs without the
valves completely open, a strong turbulent
flow can be generated. The turbulence
may cause damage in the water chamber
case and the copper tube of the chiller-
heater. If you need to adjust the flow rate
of the chilled / hot water and cooling wa-
ter, be sure to adjust the valves installed at
the outlet side of the chiller-heater.
Содержание YHAU-CE
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