Polaris BSS, Инструкция по эксплуатации, Страница: 21 / 63

21
The Condensate Cleanout Cap must be on and tight when unit is
in operation.
NOTE: If the “Blocked Exhaust “ Fault message is ever displayed
on the control system LCD, check the condensate drain first and
ensure it is not blocked.
Old trap piping is not compatible with
new trap piping.
BUILDING
DRAIN
CONDENSATE
CLEANOUT CAP CONDENSATE DRAIN
LINE - FIELD INSTALLED
CONDENSATE
DRAIN LINE
CONNECTION
DRAIN LINE TO TERMINATE NO
MORE THAN 6 INCHES (15.2cm)
ABOVE DRAIN
EXHAUST (VENT)
ELBOW
THIS SIDE VIEW
OF EXHAUST
ELBOW AND
ARROW INDICATE
THE LOCATION OF
THE PRESSURE
PORT
Figure 10
DO NOT remove the factory installed exhaust/condensate elbow
for any reason, see Figure 10. The water heater’s vent pipe is
under a slight positive pressure while unit is in operation. The
water trap inside of the exhaust/condensate elbow prevents flue
gases from escaping into the installed space.
Do not install any external condensate trap. The exhaust elbow
assembly has an internal condensate trap.
Installation must conform with these instructions and local
building codes.
Field supplied materials required for installation include:
• Approved PVC cement and PVC primer.
• 1/2 inch PVC pipe - minimum length to equal the distance
between the water heater and a suitable building drain.
• 1/2 inch PVC fittings (elbows, couplings, and adapters)
necessary to install a condensate drain line between the
Exhaust/Condensate Elbow Assembly and a suitable
building drain.
• Floor mounted standoffs to brace the drain line.
NOTES:
1. The condensate drains from the water heater’s covered by
this instruction have PH levels between 4.3 and 5.0. Install
a commercially available neutralizing kit if required by local
codes. Lower PH levels are acidic. Do not connect a metal
condensate drain line, such as copper pipe, to the water
heater for this reason.
2. The field installed condensate drain line must not be less than
1/2 inch PVC in size.
3. DO NOT remove, modify or alter the factory condensate trap.
• Shall be of material listed for hot water distribution.
• Shall be installed so as to allow complete drainage of both
the Temperature-Pressure Relief Valve and the discharge
pipe.
• Must terminate a maximum of six inches (15.2 cm) above a
floor drain or external to the building. In cold climates, it is
recommended that the discharge pipe be terminated at an
adequate drain inside the building.
• Shall not have any valve or other obstruction between the
temperature-pressure relief valve and the drain.
Burn hazard.
Hot water discharge.
Keep clear of Temperature-
Pressure Relief Valve
discharge outlet.
The Temperature-Pressure Relief Valve must be manually
operated at least twice a year. Caution should be taken to ensure
that (1) no one is in front of or around the outlet of the Temperature-
Pressure Relief Valve discharge line, and (2) the water manually
discharged will not cause any bodily injury or property damage
because the water may be extremely hot. If after manually
operating the valve, it fails to completely reset and continues to
release water, immediately close the cold water inlet to the water
heater, follow the draining instructions in this manual, and replace
the Temperature-Pressure Relief Valve with a properly rated/sized
new one.
NOTE: The purpose of a Temperature-Pressure Relief Valve
is to prevent excessive temperatures and pressures in the
storage tank. The T&P valve is not intended for the constant
relief of thermal expansion. A properly sized thermal expansion
tank must be installed on all closed systems to control thermal
expansion, see Closed Water Systems and Thermal Expansion
on Page 19.
If you do not understand these instructions or have any
questions regarding the Temperature-Pressure Relief Valve call
the toll free number listed on the back cover of this manual for
technical assistance.
CONDENSATE DRAIN
The water heaters covered in this manual are condensing water
heaters and require a building drain to be located in close proximity
to allow the condensate to drain safely.
Condensate drains from the water heater at the exhaust elbow
located at the bottom. The field installed condensate drain line
must not be elevated above the condensate drain connection on
the condensate trap, see Figure 10. If the condensate does not
drain properly it will build up in the exhaust (vent) elbow. This will
restrict the flow of flue gases and cause the Blocked Exhaust
pressure switch to open its contacts. The control system monitors
all pressure switches, if the Blocked Exhaust Switch contacts are
open the control system will lock out and disable heating operation.
The “Blocked Exhaust” Fault message will be displayed on the
control system’s LCD.