Raypak MVB 1104A, Инструкция по установке и эксплуатации

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NOTE: Failure of a heat exchanger due to lime
scale build-up on the heating surface, low pH or
other chemical imbalance is non-warrantable.
NOTE: High chemical concentrates from feeders
that are out of adjustment will cause rapid corrosion
to the heat exchanger. Such damage is not covered
under the warranty.
CAUTION: Combustion air must not be
contaminated by corrosive chemical fumes which
can cause unwarrantable damage to the heater.
CAUTION: Power to the heater should be
interlocked with the main system pump to make sure
the heater does not fire without the main system
pump in operation. Improper flow control can
damage the heater. Uncontrolled flow (too high) or
restricted flow (too low) can seriously damage the
heater. Follow these instructions to make sure your
heater is properly installed.
*
POOL
THERMOSTAT
FROM
FILTER
TO POOL
CHEMICAL
FEED
AUTO LIMIT
SET TO 110°F
Fig. 18: Single Pool Heater Application
*Maximum 4 times the pipe diameter or 12”, whichever is less.
Pool Heating
When a boiler or water heater is used in a pool heat-
ing application, ensure that all the following installation
requirements are met.
The MVB must be equipped with an external pump
and bypass arrangement. This arrangement blends
outlet water with the inlet water to increase the inlet
water temperature to a minimum of 105°F (40°C) for
Pool Heater (P) versions and 120°F (49°C) for
Hydronic Heating (H7) or Domestic Hot Water (WH7)
versions, thereby reducing the likelihood of condensa-
tion forming on the heat exchanger. The pump also
serves to circulate water through the heater from the
main system piping.
Winterizing Your Heater
Heaters installed outdoors as pool heaters in freezing
climate areas should be shut down for the winter. To
shut down the heater, turn off manual main gas valve
and main gas shut-off. Close isolation valves. Drain
the heater using the hose bibs located on the bottom
of the heat exchanger.
NOTE: There are 2 separate drains on the MVB
that must BOTH be drained to protect the heat
exchanger. These are both accessible by removing
the lower front door from the heater. Drain any
piping of all water that may experience below-
freezing temperatures.
CAUTION: Combustion air must not be contami-
nated by corrosive chemical fumes which can
damage the heater and can cause unwarrantable
damage to the heater.
Pool/Spa Water Chemistry
Chemical imbalance can cause severe damage to the
pool heater and associated equipment. Maintain the
water chemistry according to the chart below. If the
mineral content and dissolved solids in the water
become too high, scale forms inside the heat exchang-
er tubes, reducing heater efficiency and damaging the
heater. If the pH drops below 7.2, this will cause cor-
rosion of the heat exchanger and severely damage the
heater. Heat exchanger damage resulting from chem-
ical imbalance is not covered by the warranty.
NOTE: Chemical imbalance can cause severe
damage to your heater and associated equipment.
CAUTION: Corrosive water can cause unwar-
rantable damage to the heater.
To complete the installation of the pool heater, the pool
thermostat must be installed in the main return water
line, upstream of the heater. This will ensure that the
heater will be energized at the right time.
Automatic Chemical Feeders
All chemicals must be introduced and completely dilut-
ed into the water before being circulated through the
heater. High chemical concentrations will result when
the pump is not running (e.g. overnight).