Pentair MASTERTEMP User manual

Rev. A 1-21-08 P/N 473756
IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS
WARNING
FOR YOUR SAFETY - READ BEFORE OPERATING
This product must be installed and serviced by a professional service technician qualified in pool/spa heater installation
and maintenance. Some jurisdictions require that installers be licensed. Check with your local building authority about
contractor licensing requirements. Improper installation and/or operation could create carbon monoxide gas and flue
gases which could cause serious injury or death. If you do not follow these instructions exactly, a fire or explosion may
result, causing property damage, personal injury or loss of life. Improper installation and/or operation will void the
warranty. For additional free copies of these instructions; call [phone].
120/240 VAC NATURAL GAS/LP GAS
ASME MODELS Natural Propane
400K BTU/HR (MasterTemp) 460775 460776
400K BTU/HR (Max-E-Therm) 460763 460764
MasterTemp®and Max-E-Therm®
POOL HEATERS
BYPASS ACCESS PLUG KIT (472648Z) INSTRUCTIONS
[ASME MODELS - ONLY]
Pentair Water Pool and Spa, Inc.
1620 Hawkins Ave., Sanford, NC 27330 •[phone] •[phone]
10951 W. Los Angeles Ave., Moorpark, CA 93021 •[phone] •[phone]
Visit us on the Internet @ www.pentairpool.com or www.staritepool.com
© 2008 PentairWater Pool and Spa, Inc. All rights reserved.
This document is subject to change without notice.

P/N 473756 Rev. A 1-21-08
Location
The 2-inch Pipe Plug, (for access to Internal Bypass
Valve), is located at the top of the Manifold.
Function
The 2-inch Pipe Plug provides access to the Internal
Bypass Valve.
Servicing Procedure
To remove the Bypass Access Plug:
WARNING
Fire or explosion hazard. Disconnect all power
to the heater and close the External Manual
Gas Valve before starting this procedure.
1. Turn off the filter pump and all electrical
powerto the heater. Close theexternal Manual
Gas Valve.
2. If the heater is below the water level of the
pool, close isolation valves to avoid draining
the pool.
3. Open the Pressure Relief Valve to drain the
heater.
4. Remove covers or doors andpanels foraccess
to the Bypass Access Plug.
5. Insert the Pipe Plug Tool into the Manifold
Bypass Access Plug, see Figure 2.
6. Using a 7/8” open end wrench, or an
adjustable wrench, turn the Pipe Plug Tool
counter-clockwise to open the BypassAccess
Plug.You will now have access to the Internal
Bypass Valve.
7. Reassemble the ManifoldBypassAccessPlug
by reversing Steps 1 through 6 above.
[NOTE: A.S.M.E. manifolds must not be removed
from heater units since it would void the A.S.M.E.
certification.]
7/8" Open End Wrench
Tool, Pipe Plug
Bypass Access Plug
[Manifold]
Manifold
[A.S.M.E.]
Figure 2.
Save These Instructions Together With Your Existing Operation & Installation Manual For Future Reference.
© 2008 Pentair Water Pool and Spa, Inc. All rights reserved.
This document is subject to change without notice.
Trademarks and Disclaimers: The Pentair Pool Products®logo , Because reliability matters most®, MasterTemp®and Max-E-Therm®are trademarks and/or registered trademarks of
Pentair Water Pool and Spa, Inc. and/or its affiliated companies in the United States and/or other counties.Sta-Rite®is a trademark and/or registered trademark of Sta-Rite Industries, LLC.
Unless noted, names and brands of others that may be used in this document are not used to indicate an affiliation or endorsement between the proprietors of these names and brands
and Pentair Water Pool and Spa, Inc. Those names and brands may be the trademarks or registered trademarks of those parties or others.
Manifold
[A.S.M.E.]
Figure 1.