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Warning
If the Anti-Scald Valve is not installed to
the Honeywell Sheet SD/IS150, and this
manual, operation may supply
SCALDING hot water to the occupants.
To combat delays in domestic hot water delivery, normally associated with on-demand hot water heaters, Trinity Combi boilers are
equipped with an optional “Storage Mode” feature, which when turned on via the Sentry menu, maintains hot domestic water at the plate
heat exchanger for 1 to 24 hours after the latest DHW call ended
(Sentry menu option StO is adjustable from OFF to 1 to 24 hours,
factory setting is 4).
The feature is not active when turned OFF, when turned on it is interrupted by a DHW or heating demand.
Anti-Scald Valve
A Sparcomix AM101-US-1 is provided with your package. This valve regulates the water temperature leaving the
plate heat exchanger, and must be used in every instance. The dial can be set to the desired temperature required. Consult the Honeywell
manual
SD/IS150
for detailed instructions and settings
. (Note: the
valve must be set to a supply temperature of not more then 120˚F.
It is the responsibility of the installer to set the valve and remove
the dial.)
Hard Water
Hard water conditions will cause the components of
this appliance to form scale and impede the normal operation of the
unit. Water with hardness higher than 50 ppm Calcium carbonate
must incorporate a “Water Softener” prior to entering the appliance. Plugging of domestic system by scaling or accumulation of dirt is not
the responsibility of NY Thermal Inc., and suitable steps shall be taken to avoid it.
Cleaning
Secespol brazed plate heat exchangers operate with high turbulence flow, even at low flow rates. This high turbulence
keeps small particles in suspension minimizing fouling and scaling. However, in some applications the fouling tendency can be very
high, e.g. when using extremely hard water at high temperatures. In such cases it is always possible to clean the exchanger by circulating
a cleaning liquid. Use a tank with weak acid, 5% phosphoric acid or, if the exchanger is frequently cleaned, 5% oxalic acid. Pump the
cleaning liquid through the exchanger. For optimum cleaning, the cleaning solution flow rate should be a minimum of 1.5 times the
normal flow rate, preferably in a back-flush mode. After use, do not forget to rinse the heat exchanger carefully with clean water. A
solution of 1-2% sodium hydroxide (NaOH) or sodium bicarbonate (NaHCO3) before the last rinse ensures that all acid is neutralized.
Clean at regular intervals.
Combi Limitations
The Trinity Combi produces domestic hot water on demand, therefore the boiler can only provide hot water up to a
rate equal to it’s capacity to burn fuel. The following tables indicate the maximum domestic hot water flow rate at various inlet and outlet
water temperatures.
Procedure for Setting up Domestic Hot Water
If the combi boiler is being installed in an application that uses municipal water, often
the pressure is high enough to generate flow rates at the faucets that will exceed the boilers capacity to heat it. See the following tables to
determine what flow can be expected at various inlet and outlet water temperatures.
Summary of Contents for Trinity Ti 100
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