HTP 500 HL, Инструкции по установке и запуску

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LP- 446 REV. 9.3.14
A condensate neutralizer, if required by local authorities, can be made up of lime crystals, marble or phosphate chips that will neutralize
the condensate. This may be done by the installer or you may purchase a condensate neutralizer from HTP (7450-212).
2. The heater is equipped with a ¾ female socket weld fitting connection that must be piped to a local drain. It is very important that the
condensate line is sloped downward away from the heater to a suitable inside drain. If the condensate outlet on the appliance is lower
than the drain, you must use a condensate removal pump, available from HTP (554200). This pump is equipped with two leads that can
be connected to an alarm or another type of warning device to alert the user of a condensate overflow, which, if not corrected, could
cause property damage.
3. If a long horizontal run is used, it may be necessary to create a vent in the horizontal run to prevent a vacuum lock in the condensate
line.
4. Do not expose the condensate to freezing temperatures.
5. It is very important you support the condensation line to assure proper drainage.
D. FINAL CHECKS BEFORE STARTING HEATER
1. Read Startup Procedures within this manual for proper steps to start heater. (See Startup Report to record steps for future
reference.)
2. Verify the heater and system are full of water and all system components are correctly set for operation.
Ensure the heater is full of water before firing the burner. Failure to do so will damage the heater. Such damage IS NOT covered by
warranty, and could result in property damage, severe personal injury, or death.
3. Fill condensate trap with water.
4. Verify electrical connections are correct and securely attached.
5. Inspect exhaust vent and intake piping for signs of deterioration from corrosion, physical damage or sagging. Verify exhaust vent and
intake piping are intact and correctly installed per Venting Section, (Part 5) and local code.
E. SETTING UP A SINGLE HEATER
When power is applied to the heater, the control first completes a power-up systems check. During this time the combustion fan may
run. The display will initially show the current heater outlet temperature. If a fault is detected during the power-up test, the control will
display the appropriate fault code. Otherwise, the display will continue to show the heater outlet temperature and stand-by, waiting for a
demand for hot water. If the temperature of the tank sensor falls below the tank set point minus the tank differential temperature, a
demand for hot water is generated by the control.
When a demand for hot water is received, the control begins the following demand sequence. The heater first turns on the pump (if it is
not wired to run continuously). Once the pump is running, the control will display LOW WATER FLOW and wait for the water flow in the
system to increase to an acceptable level determined by the flow switch on the outside of the heater. (NOTE: This step may happen
very rapidly. If flow is adequate, LOW WATER FLOW may never display.)
Once flow through the heater is adequate, the control will measure the supply temperature. If it is below the set point temperature
minus the ignition differential set point, the control will ignite the burner. After the burner is lit, the control modulates the firing rate to
control the supply water temperature at the set point temperature plus the supply offset temperature (installer #4) above the tank set
point temperature. When the tank temperature is equal to the tank set point temperature, the control will extinguish the burner and run
the combustion fan to purge gasses from the combustion chamber. In addition, the pump will run for a pump post purge interval. The
control will then be in standby, waiting to process the next demand for heat.
During this process, the control will extinguish the burner if it senses a dangerous or unsafe condition. If the control determines that a
dangerous or unsafe condition has occurred, the control may lock out the heater and prevent it from igniting until a maintenance person
diagnoses the problem, repairs it, and resets the control. In the event that the control goes into lockout, it will show a diagnostic code on
the display, illuminate the LED fault indicator, and close the alarm relay contacts to aid in recognition of the condition, diagnosis, and
repair.
F. SETTING UP A CASCADED SYSTEM
If the heater is part of a cascaded system the operation is somewhat different. The control of each heater in a cascaded system
completes its own power up system check as described above. One of the heaters in the cascade system is designated as the master
heater. After the master heater completes its power up sequence, it checks the communication bus to see if any other heaters are
present. If other heaters are present, the master control determines these follower heater addresses. The master heater control will