41
NOTE
Do not use PVC, iron, or any piping
which has been treated with
chromates, boiler seal or other
chemicals.
Hot water supply
• Try to make the piping as short as possible.
The longer the piping, the greater the heat loss.
• Use mixing valves with low water flow resistance.
• Use shower heads with low pressure loss.
NOTE
Do not use lead, PVC, iron or any
piping which has been treated with
chromates, boiler seal or other
chemicals.
Perform the following insulation measures for
prevention of freezing.
• Take appropriate heat insulation measures (e.g.
wrapping with heat insulation materials, using
heat tape, electric heaters, solenoids, or pipe
covers) according to the climate of the region
to prevent the plumbing external to the Combi
Boiler from freezing.
The freeze prevention heaters will not prevent
this plumbing from freezing.
• Make sure that there are no water leaks from the
cold and hot water supply lines, then insulate the
pipes completely.
• Be sure to also completely insulate the water
supply valve and the cold and hot water
connections on the Combi Boiler.
• For temporary freeze protection measures, refer
to the Owner’s Guide.
Completely
insulate the
water inlet and
outlet fittings.
Do not cover the
water drain plug with
insulation.
The water in the pipe
can be drained.
Insulate the water supply
valve completely.
8.1.2 Freeze Prevention
Outdoor Installation
• For information about outdoor installation,
contact Pavilion Customer Center at 1-855-443-
8468.
Indoor Installation
• This Combi Boiler has functions to protect itself
from freezing by operating the pump and turning
on the burner when the thermistor detects lower
than 39°F(4°C).
• Freezing is prevented within the Combi Boiler
automatically unless the outside temperature
without wind is below -30°F (-35°C).
• If this model is installed in an area where the
outside temperature can approach freezing
conditions of -30°F (-35°C) or below, then
additional freeze protection measures must be
used. For temporary freeze protection measures,
refer to the Owner’s Guide.
NOTE
The room temperature must be
greater than 32°F (0°C) to prevent
freezing and the room inside must not
have negative pressure.
Both Indoor and Outdoor Installation
• The freeze prevention will not prevent freezing in
the external plumbing of the unit.
Protect this plumbing with insulation, heat tape
or electric heaters, solenoids, or pipe covers.
• In order for the freeze prevention to operate, the
unit must have power at all times.
NOTE
Freeze damage is not covered by the
warranty.
• Freezing is prevented within the Combi Boiler
automatically unless the outside temperature
without wind is below -4°F (-20°C).
• If this model is installed in an area where the
outside temperature can approach freezing
conditions of -4°F (-20°C) or below, then
additional freeze protection measures must be
used.
CAUTION
performance.
- If the water pressure is low, the Combi Boiler
cannot perform to its full capability, and may
become a source of trouble for the client.
- If the water pressure is too high, use a Pressure
Reducing Valve and a Water Hammer Arrester.
• Recommend installing a pressure meter on the
DHW inlet.
• Mount a check valve (near the DHW inlet) when
required by local code.
• Mount a shut off valve (near the DHW inlet).
Connecting the DHW pipe
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