7
Figure 4. Component Locations - Top View
TRANSFORMER
BOX
OUTLET
PLUMBING
INLET
PLUMBING
GAS VALVE
FLOW SWITCH CONDUIT
F10607
3. WATER TREATMENT
Before and during assembly, the system must be kept free
of impurities, construction dust, sand, copper dust, grease,
carbon deposits, etc., as well as welding flux residue. In
any of these instances, the old system must be rinsed with
clear water mixed with a highly concentrated rinse agent.
More generally, it is advised to implement any procedure
necessary to prevent or treat contamination.
Black oxide sludge (magnetite-Fe
3
O
4
) forms as a result of
continuous electrolytic corrosion in any system unprotected
by an inhibitor. Iron oxide (Fe
2
O
3
) (red oxide sludge) is
produced during oxygenation. Scale deposit is made
up of lime scale contained in most distributed water that
settles over the warmest surfaces of the system. Sludge
and scale do mix together and are the cause of the main
encountered field problems on heating installations.
The presence of these substances means that standard
precautions are not implemented. In this case, product
warranty cannot be applied.
The chemical compatibilitiy of several products for the
treatment of heating water equipment has been tested on
heat exchangers.
Raypak recommends the using of these corrosion inhibitors
in preventive and curative treatment for boilers.
Producers
Fernox
Sentinel
Sotin
ADEY
Inhibitors
Protector
F1 / Alphi 11
X100,
X500
Sotin
212
MC1+
Noise
reducer
X200
Universal
Cleaner
Restorer
X300
Sludge
remover
Protector F1
Cleaner F3
X400
Sotin
212
Antifreeze
Alphi 11
X500
Table B.
Corrosion/Scale Inhibitors and Recommended
Suppliers
Treatment Type
Preventitive
Curative
Protector F1
X
Cleaner F3
X
X
X100
X
X200
X
X300
X
X400
X
X500
X
Alphi 11
X
Sotin 212
X
MC1+
X
Table C. Treatment Type
Water Chemistry
Boiler
Water Temperature
41 to 212°F
pH (system contains aluminum parts)
7.5-8.5
pH (without aluminum parts)
7.5-9.5
Total Dissolved Solids (GPG)
3-9
Table D. Boiler Water Chemistry
Models
Water Hardness
4-12 GPG
Water Hardness
12-15 GPG*
PH
WH7-300B
27.3GPM
36.7GPM
6.0-8.5
WH7-400B
27.3GPM
36.7GPM
WH7-500B
32.8GPM
44GPM
WH7-650B
43.7GPM
58.6GPM
WH7-800B
54.6GPM
73.3GPM
WH7-1000B
65.5GPM
88.0GPM
*
When water hardness is higher than 15 GPG, a softener shall be
used. Water hardness values for calcium carbonate.
Table E. Water Heater Minimum Flow Rate
Содержание Xfiire 1000B
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