Jandy HI-E2, Инструкция по установке и эксплуатации

Страница: 17 / 40

Page 17
ENGLISH
Jandy
®
Pro Series, Hi-E2
®
and Hi-E2R Gas-Fired Heater
|
Installation & Operation Manual
Figure 23. Step-down gas pressure regulator.
energizes a “hot surface” igniter.
5. The igniter is allowed to reach ignition temperature,
at which it glows bright red-orange. This is visible
through the combustion chamber view port.
6. The gas valve is opened and gas flows into the
combustion air. The gas/air mixture flows through
the burner into the combustion chamber. It is
ignited by the igniter.
7. The ignition control electronically senses
successful ignition by “flame rectification”, and
the gas valve is allowed to stay on. The igniter is
de-energized.
8. The heater operates for as long as the control
demands heat, subject to continued water flow
and satisfactory operation of the system.
9. When the control stops calling for heat, the
ignition control shuts off the gas valve and the
flame goes out.
10. The ignition control continues to operate the
combustion blower for a “post-purge” period,
after which it is turned off.
The process is repeated upon the next call for heat. If ignition
is unsuccessful, or if the flame fails during normal operation,
the ignition shuts off the gas valve. It imposes a post purge
and two (2) more ignition cycles, and it shuts down the
system if ignition is not achieved in three (3) cycles.
2.12.2 Start-up
Before operating the heater, pour water into the
condensate tray and verify that it drains properly. Confirm
that pool water is flowing normally through the pool
system and equipment. Start the heater in accordance
with the Operating Instructions section of this manual,
with particular attention to the lighting and shutdown
instructions and temperature control operation.
The heater may not start on the first try. Air in the gas line
or other start-up situations may cause it to recycle. It will
lock out if ignition is not achieved in three attempts. To
provide three (3) additional attempts, turn the pool/spa
selector switch off and then back on.
The maximum working pressure of this heater is 75
psig. Be sure to take into consideration the maximum
allowable pressure of the other components in the system
when installing a PRV. Any pressure relief valve installed
must comply with provisions of the standard described in
ANSI® Z21.22 for the United Sates or CSA 4.4 in Canada.
Some local codes may also require installation of a
temperature relief valve. Check with your local codes for
requirements in your area. The valve setting should be in
accordance with local codes. Zodiac
®
recommends that
the water delivered to the pool not exceed 104°F. All
temperature and/or pressure relief valves must be listed
by a Nationally Recognized Testing Lab (NRTL) such as
CSA, UL, or ETL.
2.11.5 Automatic Chlorinators (Chemical Feeders)
A high concentration of chlorine (and many similar
chemicals) in the pool heater can be very destructive.
Heater damage caused by chemical concentration is not
covered by the Warranty. See Table 7 for guidelines on
pool water chemistry.
IMPORTANT
Always install a corrosion resistant check
valve when any sanitation equipment, including erosion
feeders and salt chlorination systems are installed.
Wire an electric chlorinator so that it cannot operate unless the
filter pump is running. If the chlorinator has an independent
clock control, synchronize it with the filter clock.
If the chlorinator is equipped with its own pump, install it so
that it introduces the chlorine downstream from the heater,
and, if possible, below the level of the heater outlet fitting.
2.12 Start-up and Adjustment
2.12.1 Normal Operation
The Hi-E
2
pool heater operates automatically. It provides
heat in response to the selector switch and temperature
settings on the control panel on the front of the heater. The
heater has internal controls to sense adequate water flow
and to handle any abnormal condition.
Normal operation is as follows:
1. The pool/spa system filter pump provides water
flow. A pressure-flow switch in the heater detects
water flow and enables the control to operate the
heater. (If the recommended fireman switch has
been provided, it must also enable operation.)
2. If the selector switch is set to "Pool" or "Spa", and
if the water temperature is not warm enough, the
control signals the combustion system to start.
3. The ignition control starts the combustion blower.
4. When the venturi pressure switch detects
combustion air flow and when a suitable “pre-
purge” time has been allowed, the ignition control