ENERGY KINETICS EK1C, Инструкция по установке и обслуживанию

Страница: 8 / 75

Accel CS Boiler - Gas Heat - Eighth Edition – January, 2015 7
CONDENSING ENERGY MANAGER - PRINCIPLE of OPERATION
The left side of the Condensing Energy Manager is the input side, which provides 24-volt power supply and connections
for thermostats. The right side is the output side, which powers the zone valves or zone circulators and signals the burner
and main circulator control.
Lights on the Condensing Energy Manager indicate what is calling for heat on left side and right side lights indicate active
zone(s), burner operation and Smart Pump and/or Injection zone operation. These function lights are an aid in servicing.
The following is a typical cycle.
1. SYSTEM WAITING FOR A CALL: There is not an active thermostat call, and the boiler is off and remains cold, waiting
until a call for heat. The red power light on the Condensing Energy Manager is glowing.
2. CALL FOR HEAT: A room thermostat call starts the cycle. The thermostat light on the left side will turn on for that zone.
3. HEAT : Output lights for the zone output and heat demand turn on, the main circulator starts, the zone opens and the
burner begins its firing cycle with pre-purge followed by ignition. The boiler water circulates through the boiler and the
active zone, heating up the water and the connected radiation. The controls include the option for outdoor reset and will
set the boiler supply temperature as needed based on the outdoor temperature and the outdoor reset settings.
4. HOT WATER CALL: A hot water call is similar to a heat call, except hot water is most effectively and efficiently
produced and delivered when the boiler supply temperature is between 165ºF and 180ºF. For this reason, upon a call
for domestic hot water, the supply set point temperature of the Accel CS boiler is increased to 182ºF. The boiler will
heat up the boiler side of the plate heat exchanger. Once the boiler supply temperature has reached 140ºF, the
domestic hot water circulator is turned on. With domestic water pumping through the domestic side of the plate heat
exchanger and boiler water pumping through the boiler side of the plate heat exchanger, the water in the storage tank
will be heated quickly and efficiently. The temperature of the domestic water coming out of the plate heat exchanger is
determined by the flow rate of the domestic water. Partially close the ball valve below the smart pump to reduce the flow
and increase the temperature, or partially open the ball valve below the smart pump to increase the flow and decrease
the temperature. The plate heat exchanger is so effective at heat transfer that this operating temperature still allows a
high level of condensation of the flue gas for peak efficiency. Note that this is much more effective than a tank with an
internal coil during heating and in the Energy Recovery Cycle. The burner runs as long as there is a thermostat calling
and as long as heat is being delivered to the zone. Hot water priority is always active during a hot water call, so the
heating zone outputs will be turned off for the duration of the hot water call or up to 25 minutes, which ever comes first.
5. THERMOSTAT SATISFIED : The thermostat light on the left side will go out. The burner will then turn off.
6. ENERGY RECOVERY : The circulator and zone valve remain energized. The circulating water will remove the energy
from the boiler, sending the heat to the last zone that called. The energy recovery stage continues until the boiler
temperature has dropped sufficiently or until maximum timing has been reached. The boiler is now sitting cold, waiting
for the next call for heat. Maximum timing for heat recovery stage is twenty minutes for space heating zones and is five
minutes for the hot water zone. Zone four has the option to shorten maximum heat recovery timing to five minutes.
RECEIVING and UNPACKING
Inspect shipment upon receipt for external damage. Further inspect any items that appear damaged by opening shipping
packaging before signing for the freight. Refuse any individual shipping cartons or packages that are damaged or appear to
be damaged. Contact Energy Kinetics and freight carrier.
After unpacking, check each item against the packing list. Inspect it thoroughly for loose parts, instruction sheets and
packing lists. Immediately report any missing items. It is wise to complete the installation before discarding packing
material. Store all parts where they will not be damaged or lost during installation. Any claims for damage or shortage in
shipment must be filed immediately against the transportation company by the consignee.