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whl-648 Rev. 000 Rel. 003 Date 3.6.18
19
Figure 8 - Water Pressure vs. Flow through the Restrictors - 140 Models
Figure 9 - Water Pressure vs. Flow through the Restrictors - 199 Models
Part 4 - Water Piping
Failure to follow the instructions in this section WILL VOID the
warranty and may result in property damage, severe personal
injury, or death.
Do not apply a torch within 12” of the appliance. If sweat
connections are used, sweat tubing to the adapter before tting
adapter to the water connections on the appliance. Damages due
to improper installation practices ARE NOT covered by warranty.
Dielectric unions or galvanized steel ttings must not be used in a
system with this appliance. Doing so WILL VOID the warranty. Use
only copper, brass, or stainless steel ttings. Teon thread sealant
must be used on all connections.
A. General Plumbing Guidelines
Use two wrenches when tightening water piping at the appliance.
Use one wrench to prevent the appliance return or supply line from
turning. Failure to prevent piping connections from turning could
cause damage to appliance components.
The appliance control module uses temperature sensors to provide
both high limit protection and modulating temperature control. The
control module also provides low water protection by sensing the
water level in the heat exchanger. Some codes / jurisdictions may
require additional external controls.
The water connections must be installed in accordance with all local
and national plumbing codes, or any applicable standard which
prevails.
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