Utica Boilers SSC Installationsanweisungen

I.  Kit is for applications that employ ECR Stainless Condensing 

boiler to work with an additional heating device.

II.  If the additional heating device can constantly supply 

hot water at 165°F or HIGHER, it is considered a HIGH 

Temperature Heating Device. Follow installation procedure 

in SECTION A. Following are common High Temperature 

Heating Devices

• Indoor wood water boiler
• Outdoor wood water boiler
• Electric boiler

III.  If Additional Heating Device only constantly supplies 

hot water at LESS THAN 165°F, it is considered a LOW 

Temperature Heating Device. Follow installation procedure 

in SECTION B. Following are common Low Temperature 

Heating Devices.

• Geothermal hot water heating device

• Solar water heating device

• Electric hot water heat pump

IV.  Heating capacity of the additional heating device will be fully 

utilized when available.

V.  Stainless Condensing boiler will fire only when the additional 

heating device cannot satisfy heat demand.

VI.  The piping connection establishes flow where water flows 

through the two heating devices (Stainless Condensing boiler 

and Additional Heating Device) in a sequential manner. The 

goal is to make the two heating units work together at the 

maximum possible system heating efficiency.
If the additional heating device is a HIGH temperature device, 

return water goes into the Stainless Condensing boiler first. 

The purpose is to have the stainless condensing boiler work in 

the condensing regime as much as possible. SECTION A.
If the additional heating device is a LOW temperature heating 

device, return water flows into additional heating device first 

to fully utilize the capacity of the additional heating device.  

VII. The water flow arrangement takes advantage of the Stainless 

Steel Condensing boiler's built in primary loop and internal 

water pump.

VIII. The system is configured so the Stainless Condensing boiler 

control system will modulate its firing rate to sustain Supply 

Water Temperature at the setting point in all conditions.

• When Additional Heating Device is supplying heat at 

its full capacity.

• When Additional Heating Device is supplying heat at 

reduced capacity.

• When Additional Heating Device is not supplying 

heat. 

IX.  The two heating units are configured to supply heat in the 

following manner. 

• When the Additional Heating Device alone CANNOT 

maintain supply water temperature at or higher 

than the temperature set point of the Stainless 

Condensing boiler, the Stainless Condensing boiler 

will fire.

• When the Additional Heating Device alone CAN 

maintain a supply water temperature higher 

than the temperature set point of the Stainless 

Condensing boiler, the Stainless Condensing boiler 

will NOT fire.