Start-Up; Check For Gas Leaks; Inspect/Fill Condensate System - Lochinvar Shield SWR125 Installation & Service Manual

9

Start-up

Check/control water chemistry
Conduct water quality testing prior
NOTICE
to installing the appliance.
solutions are available to adjust water
quality.
See the following table for properly operating the water heater
with the appropriate water chemistry. Good water quality will
help extend the life of the appliance by reducing the effects of
scale buildup and corrosion.
Table 9A Water Chemistry
WATER CHEMISTRY
Specification Range
< 5 gpg
5 to 12 gpg
Hardness
> 12 gpg
Dissolved Solids < 350 ppm
pH Level 6.5 to 8.5
Chloride < 150 ppm
1. Do not use the water heater to directly
NOTICE
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 this section.
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.
50
Various
Requirement
Follow recommendations
detailed below (See Notice 3)
No action required -
standard pump
Water softening system
required (See Notice 4)
Hardness level must be
met
Acceptable range
Acceptable range
Installation & Service Manual

Check for gas leaks

Before starting the water heater, and
⚠ WARNING
during initial operation, smell near the
floor and around the water heater for gas odorant or any
unusual odor. Remove the top access panel and smell the
interior of the water heater enclosure. Do not proceed with
startup if there is any indication of a gas leak. Use an approved
leak detection solution. Repair any leaks at once.
DO NOT attempt to measure gas valve
⚠ WARNING
outlet pressure. The gas valve is factory-
set for the correct outlet pressure. This setting is suitable for
natural gas and propane (when configured for LP), requiring
no field adjustment. Attempting to measure the gas valve outlet
pressure could result in damage to the valve, causing potential
severe personal injury, death, or substantial property damage.
Propane water heaters only – Your propane
⚠ WARNING
supplier mixes an odorant with the propane
to make its presence detectable. In some instances, the odorant
can fade, and the gas may no longer have an odor. Before
startup (and periodically thereafter), have the propane supplier
verify the correct odorant level in the gas.

Inspect/fill condensate system

Inspect/check condensate lines and fittings
1. Inspect the condensate drain line, condensate PVC fittings
and condensate trap.
Fill condensate trap with water
1. Remove the PVC cap retaining screw from the PVC cap
(FIG. 9-1).
2. Remove the 2 inch PVC cap with the switch located at the
top of the trap (FIG. 9-1).
3. Fill with fresh water until the water begins to pour out of
the drain.
4. Replace the cap. Press the cap onto the trap until the cap
makes contact with the drain.
5. Replace the retaining screw.
The condensate trap (FIG. 9-1) must be filled
⚠ WARNING
with water during all times of water heater
operation to avoid flue gas emission from the condensate drain
line. Failure to fill the trap could result in severe personal injury
or death.
Figure 9-1 Condensate Trap
NYLON CABLE
CLAMP
RETAINING SCREW
1/2" PVC UNION
IMG00487