TriangleTube prestige Control Supplement Download Page 8

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DOMESTIC HOT WATER APPLICATIONS

In all domestic hot water applications the Prestige boiler
will provide a domestic priority feature in which the CH cir-
culator will be blocked from providing heated water to the
space heating zones during a domestic hot water demand.
This feature cannot be adjusted or eliminated from the
MCBA program.

DOMESTIC HOT WATER (SMART/TR
SERIES OR DHW KIT) WITH NTC SENSOR

This application requires the optional NTC sensor kit for
SMART/TR Series Indirect Fired Water Heaters or for
DHW kit. In this application the NTC sensor will monitor
the domestic water storage temperature of the IDWH.
The domestic water storage temperature will determine
the ON/OFF operation of the boiler and the modulation
input of the boiler.

Parameter Adjustments

The first parameter adjustment needed for this applica-
tion is Parameter 35, which sets the MCBA control to
accept the NTC sensor of the IDWH. Follow the steps
given in Program Access Section on page 2 until the dis-

play shows

P_35

. Release the STEP button and dis-

play should show the factory setting listed below. Use
the + or - to adjust to the revised setting listed below and
press STORE to save the setting. The display setting will
flash when the setting is stored within the MCBA control.

Parameter 35 has multiple parameter settings
available in addition to the settings 12 and 13. DO
NOT set Parameter 35 to any other setting other
than 12 or 13. Failure to comply can result in errat-
ic or unreliable operation of the Prestige Boiler.

The next parameter adjustment for this application is
Parameter 1, which is accessible during normal opera-
tion and does not require entry into the CODE mode. To
exit the CODE mode, press the RESET button once.

Parameter 1 is the set point temperature for domestic
water storage in the IDWH. The heat request for domes-
tic heating is based on this parameter setting. To adjust

WARNING

the parameter setting press MODE until display shows

PARA

. Press STEP once and the display should show

factory setting

1140

. Use the + or - to adjust the setting.

Press STORE to save the setting. The display will flash
when the setting is stored into the MCBA control.

If Parameter 1 is set below 134

then it is recommended

that Parameter 33 be reset to a higher setting. The
request for heat is based on the temperature reading of
the DHW NTC sensor and its relationship to Parameter
1. The operating temperature setpoint of the boiler is
based on Parameter 1 + Parameter 33 with a maximum
operating temperature of 194

F. The burner ON/OFF

and modulation is based on the relationship of the boiler
supply temperature and the sum of Parameter 1 and
Parameter 33.

To adjust the DHW Set Value Addition follow the steps
given in Program Access Section on page 2 until the dis-

play shows

P_33

. Release the STEP button and the

display should show the factory setting. Use the + or -
to adjust to the revised setting and press STORE to save
the setting. The display setting will flash when the set-
ting is stored within the MCBA control

Error Codes

If Parameter 35 is set to 12 and no NTC sensor is con-
nected to the 24 volt terminal strip, DHW T-T connection
on the Prestige, then a “soft” lockout will occur. The dis-

play will show an error code of

b_38

alternating with a

status code of 9.

If Parameter 35 is set to 12 and the NTC for DHW is
short-circuited then a “soft” lockout will occur. The dis-

play will show an error code of

b_33

alternating with a

status code of 9.

Parameter

Factory Setting

Revised Setting