Pentair ETi 400 - Page 4

WWW.PENTAIR.COM
All indicated Pentair trademarks and logos are property of Pentair Inc. or its global aliates in the U.S.A and/or other countries. Third party
registered and unregistered trademarks and logos are the property of their respective owners.
© 2020 Pentair. All rights reserved. This document is subject to change without notice.
*476253*
P/N 476253 REV. A 7/28/20
FREQUENTLY ASKED QUESTIONS
• Which fuel does my heater use?
Inspect the heater's gas orice. The outer face of the gas orice will be marked with either
FN (Natural Gas) or NL (Propane).
• What certications does the ETi 400 meet?
The ETi heater is certied by The American Society of Mechanical Engineers (ASME). The heater
also complies with CSD-1 standard and CSA certied for ANSI Z21.56 /CSA 4.7. Certication sheets
are either included with the heater manual, or inside the packing slip attached to each heat exchanger.
• What makes the ETi 400 heat exchanger special?
The direct-re heat exchanger is made of extremely durable and highly corrosion-resistant titanium. The heat
exchanger's temperature rise is 30°F +/
-
5°F (
-
1°C +/
-
15°C).
• How e󰀩cient is the ETi 400 heater?
The ETi 400 has one of the highest thermal e󰀩ciencies in the pool industry. 96% of the heat generated during the
combustion process is transferred directly to pool water. This high e󰀩ciency improves your heat up time and reduces
your energy cost as shown by the formulas below:
3
TIME
=
Pool/Spa Volume
X
8.34
X
ΔT
Heater BTU
X
0.96
ENERGY
COST
=
Heater BTU
X
Time
100,000
X
Gas Price
Time: Hours required to heat pool
Pool/Spa Volume: Volume of pool in gallons
ΔT: Desired temperature rise
Heater BTU: Heater BTU rating
Gas Price: Local gas price (therm/dollar)
• Will the outside of my heater become hot?
Thanks to the heater's high e󰀩ciency most of the heating capacity goes directly into your pool, but a small amount is expelled
as exhaust. This means the heater's plastic and metal outer surfaces remain close to room temperature.