Install Instructions

AQUA PLUS indirect-fired water heaters — Product Manual
Pre-installation
Figure 1 Clearance recommendations
Codes
1. Installation must conform with instructions in this
manual and, where applicable:
• local, state, provincial, and national codes, laws,
regulations and ordinances.
• in Canada — B149.1 or B149.2 Installation
Code.
2. AQUA PLUS water heaters are exempt from ASME
Section VIII, Division 1 Code construction per In-
terpretation VIII-1-86-136. Check with local codes
for applicability.
3. Where recommendations in this manual differ from
local or national codes, local or national codes take
precedence.
Code restrictions
National Standard Plumbing Code
1. Single-wall heat exchanger in water heater complies
with National Standard Plumbing Code, provided
that:
a. boiler water (including additives) is practically
non-toxic, having toxicity rating or class of 1,
as listed in Clinical Toxicology of Commercial
Products, and
b. boiler water pressure is limited to maximum 30
PSIG by approved relief valve.
Uniform Plumbing Code
1. Single-wall heat exchangers are permitted if they
satisfy all of the following requirements —
a. The heat transfer medium is potable water or
contains only substances which are recognized
as safe by the U. S. Food and Drug Adminis-
tration.
b. The pressure of the heat transfer medium is
maintained less than the normal minimum op-
erating pressure of the potable water system.
c. Exception: Steam complying with #a, above.
d. The equipment is permanently labeled to
indicate that only additives recognized as safe
by the FDA shall be used in the heat transfer
medium.
2. Other heat exchanger designs may be permitted
where approved by the Administrative Authority.
Recommended clearances
Installation location must provide adequate clearances for servicing and
proper operation of the water heater. See Figure 1.
• 1” clearance is permissible to either side of water heater, but the Instruc-
tion label or other labels may be hidden.
• Top (vertical) clearance is 12” minimum.
• Refer to boiler manual for boiler clearances.
Clearance to combustible materials
1. Provide at least ½” clearance between all hot water pipes and combus-
tible materials.
Water heater placement
1. Read and comply with “Location,” page 3 of this manual.
2. Select a convenient location for the water heater, based on domestic
and boiler piping hook-ups.
3. Keeping the distance between boiler and water heater short will:
• reduce piping heat loss.
• provide minimum friction loss.
Install levelling legs
1. Carefully tip the water heater onto its side.
2. Screw the four levelling legs into the base.
3. Return the water heater to the upright position and set in place.
4. Adjust the legs as necessary to level the water heater.
Part number GL-E223-ADOC 0311
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