ENERGY KINETICS EK1C, Инструкция по установке и обслуживанию

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Accel CS Boiler - Gas Heat - Eighth Edition – January, 2015 36
SmartBoost™ Operation
Outdoor temperature reset alone is inadequate to adapt to the comfort needs of typical homes. Operating a boiler based
on a single reset curve with multiple zones generally leads to higher boiler temperatures and lower efficiency. When the
curve is properly set to maintain temperature, it is inadequate for recovering from night setback thermostats, leading to poor
response and inadequate space heating. Running at lower temperatures, however, can improve condensation rates,
nominally increasing operating efficiency.
Energy Kinetics’ unique solution to deliver higher efficiency and faster response for home comfort is SmartBoost™. The
Condensing Manager operates the boiler with supply temperature at the reset curve temperature for up to 25 or 45 minutes
(set the boost delay time with option switch 7), and then it increases the operating temperature temporarily to recover from
night setback or to satisfy individual zones requiring higher temperatures. Each zone’s operating time is tracked
individually, and once the zone is satisfied, the boiler will slowly adjust the temperature back to the reset curve setpoint for
that specific zone. If there is another call from the boosted zone in a short period of time, it will return to a boosted
temperature without needing to wait for the boost delay time to elapse.
Specifically, upon a thermostat call, SmartBoost™ waits for the boost delay time (option switch 7) before raising the
heating zone supply temperature set point by 5°F every five minutes until either of the following is reached: 200°F, or the
calculated design day set point plus 30°F, whichever is lower. Also, when the return water temperature is greater than
130°F, the boiler will no longer condense, and the supply temperature set point is immediately raised by about 15°F. The
higher supply temperature will help satisfy the thermostat sooner, which will shut off the burner sooner. The combined
boost from time and return temperature is never more than 200°F or the design day set point plus 30°F, whichever is lower.
Boiler Supply Temperature Setting During Domestic Hot Water Call
When the DHW zone is active (THW/ZHW terminals), the boiler supply temperature is controlled to the DHW Setpoint as
shown on the Sola Display. The DHW Setpoint will not change due to outdoor reset function and so does not change when
the outdoor temperature changes. DHW temperatures are normally set to approximately 140 degrees F (a copper pipe with
140 degree water can be grasped in your hand for only 2-3 seconds). If the DHW temperature is too low (120-130
degrees), the boiler temperature can be raised during a DHW call to increase the temperature. If the DHW temperature has
become too hot, the boiler supply temperature can be lowered to bring the DHW temperature down. Start with an
adjustment of 5-10 degrees on the boiler side if the DWH temperature needs adjustment. The
DHW Setpoint can be
changed from the factory default of 182°F by using the Sola display. Press the info button and select Quick Start , then
select DHW Setpoint . Note: The boiler supply temperature setting during a DHW zone call is not affected by dip switch 4
(Auto Express and Custom Settings).
Domestic Hot Water Smart Pump Operation
When using an Energy Kinetics DHW storage tank and plate heat exchanger, operation of the DHW Smart Pump relay
output is controlled by the Condensing Energy Manager. Upon a thermostat call from the storage tank, the Manager will
turn on the zone valve output and after 2 seconds will send a heat demand to the Sola. Once the boiler supply temperature
has reached 140°F, the Smart Pump relay and indicator LED are turned on by the Condensing Energy Manager. If at any
time the boiler supply temperature drops below 140°F, the Manager will turn off the Smart Pump relay, allowing the boiler to
reheat. When using an indirect style DHW tank by others or using the DHW zone as a space heating zone, disable the
Smart Pump relay and indicator LED by turning on dip switch 9.
Domestic Hot Water Priority
The Domestic Hot Water zone has priority over the four heating zones. Upon a thermostat call from the DHW storage
tank, the Manager will turn off any active heat zones. Once the DHW thermostat is satisfied, then the Manager will turn on
all heat zones that have active thermostat calls. DHW Priority is limited to 25 minutes by default, but can be extended to 45
minutes of priority operation by turning on option switch 10.
Normal Heat Zones or Primary/Secondary Heat Zones
Zones 1, 2 and 3 will operate as normal direct supply/return heating zone(s) when dip switches 1, 2 and 3 are turned off.
The following will occur upon a thermostat call to input terminal T1: the Zone 1 output will turn on which will begin opening
the heating zone valve. Two seconds later, the Condensing Energy Manager will apply a heat demand to the Sola which
will start the boiler circulator. When zone(s) 1, 2 or 3 are secondary zone(s) fed from a primary/secondary injection loop,
turn on option switch 1, 2 or 3. The following will occur upon a thermostat call to input terminal T1: the Zone 1 output will
turn on which will begin opening the heating zone valve. Then the Condensing Energy Manager Injection Zone output will
turn on which will begin opening the injection zone valve. Two seconds later, the Condensing Energy Manager will apply a
heat demand to the Sola which will start the boiler circulator and the primary loop circulator. During a Domestic Hot Water
thermostat call, DHW Priority will turn off the injection zone valve only, and will continue to run the primary loop circulator
and any active heating zone valves.
Main Boiler Circulator 2 Second ON Delay:
Upon a thermostat call, the Condensing Energy Manager will immediately turn on the corresponding zone output and the
zone valve will begin to open. Two seconds later, the Condensing Energy Manager will turn on the B1-B2 output which will