Honeywell SV2 Series User Manual page 89

IMPORTANT
• The FARMOD is standard equipped with a heating device to help protect it from condensation as part of the full
dehumidification solution. The heater will be powered whenever the valve electronics are powered. The FARMOD will feel
warm after one hour of power-up. This is normal.
• As part of the appliance adjustments during commissioning, the site-specific calibration of the SV2 Series valve/appliance
should be performed when the valve/appliance has reached a typical operating temperature for its installation/application
in order to minimize the impact of component temperature changes on the fuel/air ratio.
Heat Exchanger Kit
The Honeywell heat exchanger can be assembled directly to the V2MU mixing unit. The heat exchanger, in conjunction with the
FARMOD embedded heater and insulation shoe, works to reduce the moisture content in the combustion air in hot and humid
conditions by cooling the air and condensing moisture out before it enters the pulse line. The collected moisture / condensate
drains into the mixer via which it is transported towards the fan, burner and combustion room.
IMPORTANT:
• When the valve is installed in an area with a temperature continuously lower than the combustion air intake temperature,
a risk of condensate formation in the air pulse line is present, which can affect the fuel/air ratio control, depending on the
appliance and permanently damage the FARMOD and the system.
• In this case it is strongly recommended to install the Honeywell SV2 Series HEATEXCHANGER-000 kit for a complete
condensation/dehumidification solution to avoid permanent damage to the FARMOD and the system.
• When using the Honeywell HEATEXCHANGER-000 kit, the valve + FARMOD may be installed above or below the mixing unit
+ Heat Exchanger, but above is preferred.
• If the potential for condensation exists and the full Honeywell dehumidification system is not used, Honeywell cannot
provide any guidance regarding the valve/FARMOD position versus the mixing unit as this configuration as not been
designed or tested.
• To prevent condensation formation due to back draft, it is recommended to purge the application after each burner
operation.
• If there is never a risk of condensation, meaning the ambient room temperature is above the combustion air dew point at all
times, the complete dehumidification system is not needed. This means adding the additional SV2 Series Heat Exchanger
kit is then not needed. In this case the valve + FARMOD can be mounted above or below the mixing unit.
NOTE: The Heat Exchanger and the filter must be mounted between the V2MU mixing unit and the FARMOD, with the
Heat Exchanger first and the filter mounted as close to the FARMOD as possible. Refer to
The optional heat exchanger can be directly mounted to the V2MU mixing unit as shown in
be mounted in either a vertical or horizontal position, depending on the appliance configuration and available space. When
assembling the heat exchanger, care shall be taken that condensate can drain to the mixing unit. Accordingly, ensure that the
mixer connection on the heat exchanger is the lowest point in regards to the heat exchanger mounting, otherwise water will be
trapped inside the heat exchanger and will not drain appropriately.
SV2 Series Safety Shut-off Valves
V2F, V2V
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
89
Fig. 45 and Fig. 47.
Fig. 45, Fig. 49 and Fig. 50 and can