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When installing the pressure relief valve, follow the guidelines
below.
•
The discharge capacity of the valve should be greater than or
equal to the maximum pressure rating of the space heating
system in the boiler.
•
The maximum Btu/h rating of the pressure relief valve should
be greater than or equal to the maximum input Btu/h rating of
the boiler.
•
If the pressure relief valve operates, discharging domestic hot
water, domestic hot water may scatter or splash onto other
equipment around. Connect the pressure relief valve to the
outlet pipe.
•
When installing the discharge piping line, do not install a
coupling whose internal diameter decreases or has other
restrictions.
If the pressure relief valve discharges hot water periodically, thermal
expansion may occur due to an expansion tank problem or small
expansion tank size. Do not plug the pressure relief valve.
Space Heating Piping
When connecting the space heating system, follow these
guidelines.
•
Tighten the connection valves carefully in order to avoid
damage.
•
After installing the boiler, check if the space heating water flows
smoothly and if there is a water leak. Inform the boiler owner
of the fact that the strainer should be cleaned periodically to
maintain the smooth flow of space heating water. (The strainer
is located on the side of the space heating return.)
Installing a Domestic Hot
Water(DHW) System
VESTA DS VRC boiler can supply domestic hot water continuously
when the flow rate is detected by the flow switch. This is the most
appropriate way to minimize standby losses and improve the
combustion efficiency.
Guidelines for a DHW System
VESTA DS VRC boiler is designed to use space heating and domestic
hot water.
This boiler is equipped with the flow switch, and when
approximately 0.5GPM or more water flows, the flow switch will
sense such water flow. The boiler will then switch to the DHW mode
immediately regardless of the space heating system's status.
Read and follow the guidelines stated below for the safety and
proper installation of DHW system.
Scald Hazard
The hotter the water, the higher the risk of burns. If the DHW
temperature is set too high, there is a risk of burns from domestic
hot water. Make sure to follow the usage guidelines in the user
manual.
17
Installing the System Piping
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