LP-314 Rev. 012 Rel. 003 Date 9.27.19
18
M. Applications
Figure 9 - Piping with Air Handler Application
NOTES:
1. Minimum pipe size
should match connection
size on appliance. Upsize
pipe accordingly if greater
ow is required.
2. A thermal expansion tank
suitable for potable water
must be sized and installed
within the piping system
between the check valve
and cold water inlet of the
appliance.
3. Gas line must be rated
to the maximum capacity
of the unit. Unit must have
10 feet of pipe after gas
regulator.
4. All circulators shall have
an integral ow check.
NOTES FOR AIR HANDLER
APPLICATION (APPLIES
TO DOMESTIC WATER
OUTLET CONNECTIONS
ONLY):
1. MASSACHUSETTS STATE
PLUMBING CODE REQUIRES
A DISTANCE NO GREATER
THAN 50 FEET FROM THE
APPLIANCE TO THE FAN
COIL IN THE AIR HANDLER.
2. MASSACHUSETTS STATE
PLUMBING CODE REQUIRES
AN ELECTRONICALLY
TIMED CIRCULATOR PUMP
TO ACTIVATE EVERY SIX
HOURS FOR 60 SECONDS.
THIS CIRCULATOR IS
REQUIRED TO BE BRONZE
OR STAINLESS.
3. ALL WATER PIPING MUST
BE INSULATED.
4. YOU MUST INSTALL A
VACUUM RELIEF VALVE PER
248 CMR.
NOTE: THIS DRAWING IS
MEANT TO DEMONSTRATE
SYSTEM PIPING CONCEPT
ONLY. THE INSTALLER
IS RESPONSIBLE FOR
ALL EQUIPMENT AND
DETAILING REQUIRED BY
LOCAL CODES.
The piping will not support the weight of the appliance circulator pump. Refer to the pump manufacturer’s installation instructions to
properly support the circulator pump. Failure to comply with these instructions could result in substantial property damage, severe personal
injury, or death.
DO NOT use the heat pack for high temperature (over 160
o
F) applications. Failure to comply will result in substantial overworking of the
appliance, and possibly lead to early appliance failure. Use of the heat pack for high temperature applications WILL VOID the warranty.
Figure 10 - Piping with Zone Valves
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