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

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lp-585 Rev. 000 Rel. 001 Date 9.10.18
3
Introduction
Drain back tanks are designed to allow solar collectors and related
piping to drain heat transfer fluid into the drain back reservoir when
not in use.
Drain back systems are versatile: ideally suited for both cold and warm
regions. The drain back process protects solar system components from
both freezing and overheating, and saves power by shutting down the
solar system when there is no longer a demand for hot water. Drain back
systems have fewer components than pressurized systems, making
drain back systems easier to use, service, and maintain. The drain back
tank ships without a heat exchanger for use with a solar water heater
with an internal heat exchanger.
This manual intends to familiarize you with the proper installation and
maintenance of your solar water heating system. This system must
be installed by a licensed solar or plumbing contractor in accordance
with SRCC Standard OG-300 and all applicable national, state, and local
codes.
NOTE: Solar system performance and efficiency varies with factors such
as: household hot water load, ambient air temperature, collector/roof
pitch, collector orientation, and seasonal intensity.
Job site conditions will require your installation contractor to supply
some or all of the following:
• Plumbing connections
• Piping and insulation
• Valves between the existing domestic water system and the
drain back solar system
Part 1 - General Safety Information
Installer -
Read all instructions in this manual before installing.
Perform steps in the given order.
User - This manual is for use only by a qualified heating installer /
service technician. Have this solar water heating system serviced /
inspected annually by a qualified service technician.
Failure to adhere to these guidelines can result in substantial
property damage, severe personal injury, or death.
NOTE:
Obey all local codes. Obtain all applicable permits before
installing the solar system.
NOTE: Install all solar system components and piping in such a
manner that does not reduce the performance of any fire rated
assembly.
Part 4 - Installation 8
A. Checklist 8
B. Tools and Materials 8
C. Locating the Drain Back Tank 8
D. Specifications and Dimensions 9
Part 5 - Piping 9
A. Potable Water Piping 9
B. Water Chemistry Requirements 10
C. Solar Heat Exchanger Piping 10
D. Necessary Components for Water Heater Installation 10
E. Installation of the Drain Back Tank 11
F. Solar System Pump 12
G. Electrical Installation 12
H. Installing the Drain Back Tank Sight Tube 12
I. Applications 13
Part 6 - Fluid Quality 15
A. Solar Loop Fluid Quality 15
B. Fluid Safety Labeling 15
C. Freeze Protection 15
Part 7 - Start-Up Preparation 15
A. Check for Leaks in the Solar Loop 15
B. Fill the Drain Back Reservoir 15
C. Start-Up Procedure 15
Part 8 - Service / Maintenance Procedures 15
A. Shutdown Procedures 16
B. Draining the Drain Back Reservoir 16
C. Routine Maintenance 16
D. Vacation Shutdown Procedure 16
E. Estimated Life of Components 16
F. Temperature and Pressure Relief Valve 16
Part 9 - Troubleshooting 16
A. Leaks 16
B. Other Problems 16
C. Operating Suggestions for the User 16
Part 10 - System Parts Listing 17
A. Estimated Component Life 17
B. Warranties and Disclaimers 17
Limited Warranty 25
Customer Installation Record Form 27
DO NOT USE THE SOLAR SYSTEM IF ANY PART HAS BEEN
SUBMERGED IN WATER.
Immediately call a qualified service
technician. Components may need to be replaced. Attempting
to operate components that have been submerged could create
numerous harmful conditions, such as a potential gas leakage
causing a fire and/or explosion, or the release of mold, bacteria,
or other harmful particulates into the air. Operating a previously
submerged water heater could result in property damage, severe
personal injury, or death.
NOTE:
Damage due to flood or submersion is considered an Act of
God, and IS NOT covered under product warranty.
NOTE: Failure to follow the procedures and instructions in this manual
WILL VOID the warranty.
High heat sources (sources generating heat 100
o
F / 37
o
C or greater,
such as stove pipes, space heaters, etc.) may damage plastic
components of the water heater as well as plastic vent pipe materials.
Such damages ARE NOT covered by warranty. It is recommended to
keep a minimum clearance of 8” from high heat sources. Observe heat
source manufacturer instructions, as well as local, state, provincial,
and national codes, laws, regulations and ordinances when installing
this water heater and related components near high heat sources.
NOTE: If the solar water heating system is exposed to the following,
do not operate. Immediately call a qualified service technician.
1. Fire
2. Damage
3. Submersion in Water
Failure to adhere to these guidelines can result in substantial
property damage, severe personal injury, or death.
Only use this solar hot water system as intended and described
in this installation manual. Any use other than described will void
warranty and may lead to fire, property damage, personal injury, or
death.
Improper installation or use may result in property damage. Such
damages ARE NOT covered by warranty.
Ensure there are no low points or dips in sloped non-vertical supply
and return pipe runs from the solar collectors to the drain back tank.
Low points and improperly designed solar piping can trap water and
possibly rupture in freezing weather. Pitch non-vertical piping ¼” per
foot towards the drain back tank to facilitate proper drainage, and
take care to properly layout piping to ensure there are no low points.
In addition, the drain back tank and solar storage tank must be
protected from freezing temperatures. Care must be taken when
filling the system to avoid overfilling and exposing pipes to a
freezing condition.