lp-606 Rev. 000 Rel. 006 Date 2.19.20
4
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 water
heater location. Place the water heater in a location not prone to
freezing.
Failure of the water heater, solar system, or components due to
freeze related damage IS NOT covered by product warranty.
Part 2 - Important Information
A. Scope of this Manual
This manual pertains only to the installation and operation of
the solar water heater. Details for the installation, operation, and
maintenance of the complete solar water heating system, including,
but not limited to: the solar collector(s), boiler, pump, system
controller, valves, and other plumbing components, should be
provided separately by their respective manufacturers.
NOTE:
This manual is primarily a reference document for authorized
installation individuals, as the solar water heater is not permitted to
be installed by non-authorized persons.
In order to meet health and safety regulations, solar system antifreeze
fluid should be food grade polypropylene glycol, FDA rated as
“generally recognized as safe” (GRAS). Using proper concentrations
of glycol, solar systems can be operated at ambient temperatures as
low as -60
o
F. Freeze tolerance limits are based upon an assumed set
of environmental conditions. Refer to the specification sheet included
with the glycol for recommended concentrations. A glycol / potable
B. Local Standards and Authorized Persons
Installation must be completed in accordance with local standards
and regulations.
Installation must also be completed by a qualified tradesperson
who holds relevant industry licenses or certificates. The term
“authorized person(s)” used throughout this document refers to a
suitably qualified professional. Unless otherwise specified, no part
of the solar water heater may be inspected, repaired, or maintained
by anybody other than an authorized person.
C. Terminology
Solar terminology differs from region to region. To avoid confusion,
please note the following:
Supply
– The plumbing line running from the outlet of the collector
to the tank (or heat exchanger).
Return
– The plumbing line running from the tank (or heat
exchanger) to the inlet of the collector. This line incorporates the
circulation pump.
water mix must not exceed 50%, unless the manufacture specifies
that a different ratio is recommended for use with solar water heaters.
Glycol may need to be changed periodically (every 3-5 years) to
prevent it from becoming acidic; please refer to the guidelines
provided by the glycol manufacturer regarding replacement.
NOTE:
The use of glycol not recognized as GRAS is allowed in double
wall heat exchanger models ONLY.
COLD WEATHER HANDLING
- If the water heater has been stored
in a very cold location (BELOW 0
o
F) before installation, handle with
care. Failure to do so could result in damage to the water heater.
D. Locating the Solar Water Heater
This water heater is certified for indoor use only. DO NOT INSTALL
OUTDOORS. Outdoor installations ARE NOT covered by warranty.
To minimize expense, choose a location for the water heater as
centralized to the domestic piping system and near the solar
collectors as possible. Also, locate the water heater and domestic
water piping where it will not be exposed to freezing temperatures.
All piping should be insulated to protect against freezing and
minimize heat loss. Additionally, place the water heater so that the
drain, controls, and inlets/outlets are easily accessible.
NOTE:
If you do not provide the minimum clearances shown in
Figure 3, it might not be possible to service the water heater without
removing it from the space.
NOTE:
A combustible door or removable panel is acceptable front
clearance.
The solar water heater should also be installed in a place where T&P
discharge or a leak will not result in damage to the surrounding area.
Install a 2” high drain pan with a minimum of ¾” drain line to prevent
water damage if leakage should occur. See Figure 3.