Rheem Raypak MVB 1003A, Инструкция по установке и эксплуатации

Страница: 31 / 64

31
4' MIN
(1.2 m)
HEATER UNIT
FLUE EXHAUST
VENT CAP
3' MIN
(.91 m)
INTAKE VENT
INSULATED EXHAUST
VENTING
CONDENSATION TRAP
F10686
Figure 32. Outdoor Venting
1. Outdoor models must be installed outdoors and
must use the outdoor vent cap and air intake hood
available from the manufacturer (sales order option
D-11).
2. Periodically check venting system. The heater’s
venting areas must never be obstructed in any
way and minimum clearances must be observed
to prevent restriction of combustion and ventilation
air. Keep area clear and free of combustible and
flammable materials.
3. Do not locate adjacent to any window, door, walkway,
or gravity air intake. The vent must be located a
minimum of 4 ft (1.2 m) horizontally from such areas.
4. Install above grade level and above normal snow
levels.
5. Vent terminal must be at least 3 ft above (305 mm)
any forced air inlet located within 10 ft (3 m).
6. Adjacent brick or masonry surfaces must be protected
with a rust-resistant sheet metal plate.
Freeze Protection
NOTE: The vent cap and air intake hood must be
furnished by the heater manufacturer in accordance with
its listing (sales order option D-11).
NOTE: Condensate can freeze on the vent cap. Frozen
condensate on the vent cap can result in a blocked flue
condition. The drain line must not be allowed to freeze.
Take appropriate measures.
To enable freeze protection, dip switch position 7 (on the
PIM) must be turned on (UP position). This is the default
position.
If the water temperature drops below 45 ° F (7 ° C) on
the Outlet or Inlet sensors, the Boiler pump is enabled.
The pump is turned off when both the Inlet and Outlet
temperatures rise above 50 ° F (10 ° C).
If either the Outlet or Inlet temperature drops below 38°F
(3
°
C), the VERSA starts the burner at the minimum firing
rate. The burner cycle will terminate when both the Inlet
and Outlet temperatures rise above 42°F (6
°
C).
5. CONTROLS
A WARNING: Installation, adjustment and service of
heater controls, including timing of various operating
functions, must be performed by a qualified installer,
service agency or the gas supplier. Failure to do so may
result in control damage, heater malfunction, property
damage, personal injury, or death.
A WARNING: Turn off the power to the heater before
installation, adjustment or service of any heater controls.
Failure to do so may result in board damage, heater
malfunction, property damage, personal injury, or death.
A CAUTION: This appliance has provisions to be
connected to more than one supply source. To reduce the
risk of electric shock, disconnect all such connections
before servicing.
A CAUTION: Risk of electric shock: More than one
disconnect switch may be required to de-energize the
equipment before servicing.
For a listing of the steps in the sequence of operation, see
the VERSA IC
®
manual (241493).
Ignition Control Functions
When there is a call for heat, and all safeties are closed,
then the combustion air blower starts to purge air from the
combustion chamber. After the pre-purge, the igniter is
energized for a 4-sec trial for ignition. The standard ignition
module will lock-out after failing to light 3 times during a
call for heat. To reset the lock-out, press and release the
RESET button located on the user interface. The control
will automatically reset after 1 hour. When in lock-out the
control will run the blower through a post-purge cycle.
The single-try ignition module (part of the CSD-1 option)
will attempt to light only one time before lock-out occurs.
To reset the lock-out, press and release the RESET button
located on the user interface.
Turning off the power to the heater WILL NOT reset the
single-try ignition module.