HTP Drain Back, Установка, Запуск, Обслуживание, Запчасти, Гарантия

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lp-585 Rev. 000 Rel. 001 Date 9.10.18
4
A. When Servicing the Solar Water Heating System
To avoid electric shock, disconnect electrical supply before performing
maintenance.
To avoid severe burns, allow solar collector and associated equipment
to cool before servicing.
ALL PIPING AND PLUMBING CONNECTIONS SHOULD BE MADE
WITH COPPER PIPE ONLY. No less than ¾” I.D. copper tube of the
type meeting local codes must be used for piping. Pipe runs must be
solidly attached with proper clamping methods. Soldered connections
should be secured with 95/5 lead-free solder. Use only pipe rated for
250
o
F minimum on both the collector return and supply piping.
PEX piping is approved for use in the solar loop of drain back systems
ONLY.
B. Local Installation Regulations
Installation of this solar water heating system may be governed
by individual local rules and regulations for this type of system,
which must be observed. Always use the latest edition of codes. The
installation, adjustment, service, and maintenance of the solar water
heater must be done by a licensed professional who is qualified and
experienced in the installation, service, and maintenance of solar hot
water systems.
UNCRATING SYSTEM COMPONENTS - Any claims for damage
or shortage in shipment must be filed immediately against the
transportation company by the consignee.
C. Chemical Vapor Corrosion
Products to Avoid
Areas Likely to Have
Contaminants
Spray cans containing
fluorocarbons
Dry cleaning / laundry areas
and establishments
Permanent wave solutions Swimming pools
Chlorinated waxes / cleaners Metal fabrication plants
Chlorine-based swimming pool
chemicals
Beauty shops
Calcium chloride used for thawing Refrigeration repair shops
Sodium chloride used for water
softening
Photo processing plants
Refrigerant leaks Auto body shops
Paint or varnish removers Plastic manufacturing plants
Hydrochloric or Muriatic acid
Furniture refinishing areas and
establishments
Cements and glues New building construction
Antistatic fabric softeners used in
clothes dryers
Remodeling areas
Chlorine-type bleaches, laundry
detergents, and cleaning solvents Garages and workshops
Adhesives used to fasten building
products
Table 1 - Products and Areas Likely to Have Contaminants
NOTE: DAMAGE TO THE DRAIN BACK TANK, SOLAR SYSTEM, OR
RELATED COMPONENTS CAUSED BY EXPOSURE TO CORROSIVE
VAPORS IS NOT COVERED BY WARRANTY. (Refer to the limited
warranty for complete terms and conditions.)
D. Insulation Blankets
For installation of insulation blankets, refer to Solar Water Heating
System Design and Installation Guidelines, SRCC OG-300 .
E. Water Temperature Adjustment
An ASSE 1017 rated mixing valve to avoid severe burns or death
from scalding temperatures IS REQUIRED PER SRCC OG-300.
Approximate Time / Temperature Relationships in Scalds
120
o
F More than 5 minutes
125
o
F 1 1/2 to 2 minutes
130 o F About 30 seconds
135 o F About 10 seconds
140 o F Less than 5 seconds
145 o F Less than 3 seconds
150 o F About 1 1/2 seconds
155 o F About 1 second
Table 2 - Approximate Time / Temperature Relationships in Scalds
Households with small children, disabled, or elderly persons may
require a 120
o
F or lower temperature setting to prevent severe
personal injury or death due to scalding.
In addition, to prevent scalding, the high temperature of the potable
water must be limited using an ASSE 1016 tempering valve. This
valve is usually located between the hot water storage tank and
faucets in bathrooms, kitchens, etc. Tempering valves are mandatory
under most codes and usually set to a maximum of 120
o
F. Tempering
valves must be rated for high-temperature solar use.
F. Freeze Protection
NOTE: Consider piping and installation when determining drain
back tank location. Place tank in a location not prone to freezing.