Pre-Installation Requirements; Pressure Relief Valve - Munchkin T50M Installing, Operating & Maintaining

C. PRE-INSTALLATION REQUIREMENTS
The Munchkin is designed for installation on non-rated flooring, in alcoves, basements, utility rooms,
and closet but never a bedroom closet. Choose a location for your Munchkin, centralized to the piping
system, along with consideration for Electrical (Part 2, Page 8), Gas Connection (Part 3, Page 10) and
Venting (Part 4, Page 13).
The Munchkin is certified as an indoor appliance. Do not install the Munchkin
outdoors or locate where it will be exposed to freezing temperature. This includes all
related piping and components. If the Munchkin is subjected to flood water or
submersed in water, the Munchkin must be replaced.
Service clearance of the Munchkin: See Section 1, Figures 1-1 and 1-2.
If the Munchkin is set up for liquefied petroleum (LP) gas, some geographic areas follow the Uniform
Mechanical Code, section 304.6, "Liquefied petroleum gas burning appliances shall not be installed in
a pit, basement or similar location where heavier-than-air gas might collect. Appliances so fueled, shall
not be installed in a below grade under-floor space or basement unless such location is provided with
an approved means for removal of unburned gas."
Condensation removal: This is a condensing high efficiency appliance, therefore
condensation removal must be addressed to avoid damage to surrounding area or
appliance. See Part (4) Section E for Condensate Requirements (pg. 21).
D. PRESSURE RELIEF VALVE
A pressure relief valve is installed into the front right side manifold. We recommend a WATTS ¾"
M 335 MI valve or equivalent and meets the requirements of ANSI/ASME Heater and Pressure
Vessel Code, Section IV or CSA B51; Heater, Pressure Vessel and Piping Code as applicable for
heating heaters. A ¾" pipe must be directed to a floor drain or suitable location within 6" of a drain
or floor. Protect from freezing, do not plug or cap pressure relief valve. Serious explosion causing
property damage and or loss of life could result. Under no circumstances should the relief valve
be eliminated, capped or plugged.
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GENERAL INFORMATION
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