Install Instructions

5
2 Pre-installation
1. The installation must conform to the instructions in this
manual and all applicable local, state, provincial, and
national codes, laws, regulations, and ordinances.
Installations in Canada must conform to B149.2
Installation Code.
2. Be certain the domestic water supply to the tank has
physical and chemical characteristics that fall within
the limits shown in Table 2A. Where questions exist as
to the composition of the water on the job, a qualified
water treatment expert should be consulted.
Water with characteristics outside the limits
shown in Table 2A may severely shorten the
life of the tank due to corrosion. Damage
to tanks in such cases is not covered under
warranty.
3. Read and understand all installation requirements in this
manual.
Table 2A
Water Chemistry Requirements
Water used in the tank must have characteristics falling
within the following limits:
Characteristic Min. Max.
Ph 6.0 8.0
Chloride (PPM) -- 80
CAUTION
Locating the Tank
1. Choose a location for your water heater centralized to the
piping system. You must also locate the SDT/SET water
heater where it will not be exposed to freezing temperatures.
Additionally, you will need to place the water heater so that
the controls, drain, and inlet/outlets are easily accessible.
This appliance must not be installed outdoors, as it is
certified as an indoor appliance, and must also be kept
vertical on a level surface.
2. Keep distance between boiler and water heater to a
minimum to:
a. reduce piping heat loss
b. provide minimal friction loss
3. Figure 1-1 on page 4 shows the weights of all the tanks filled
with water. Make sure that the location chosen for the tank
is capable of supporting it.
This appliance must be placed where leakage
from the relief valve, leakage from the
related piping, or leakage from the tank or
connections, will not result in damage to the
surrounding areas, or to the lower floors of
the building. A water heater should always
be located in an area with a floor drain or
installed in a drain pan suitable for water
heaters. Lochinvar shall not be held liable for
any such water damage.
CAUTION
SDT/SET Installation & Operation Manual
24” MIN CLEARANCE FROM
ELEMENT COVER
(SET Models)
Figure 2-1 Element Cover Clearances
NOTICE
1. Do not use the water heater to directly
heat swimming pool or spa water.
2. At initial fill and during water heater
start-up and testing, check system
thoroughly for any leaks. Repair all leaks
before proceeding further.
3. When water hardness levels are less
than 5 gpg or 85.5 mg/l, the following is
recommended:
a. Flush and clean existing water heating
system prior to installation.
b. Inspect and, if necessary, replace the
anodes in any existing tanks.
c. Install a Y-strainer on the inlet of each
water heater as detailed in diagram.
d. Limit the run time of the hot water
recirculation loop.
e. Filter the hot water recirculation loop
to a level of 10 microns. CAUTION:
Check recirculation pump size to verify
it is sized for filter addition and upsize if
necessary.
4. When water softener is required, a
Template Assisted Crystallization system
is recommended.