Honeywell SV2 Series User Manual page 91

Fig. 50: Heat exchanger mounting examples with vertical mixing unit orientation (shown with 300kW Mixing Unit).
NOTE: The Heat Exchanger may be remote mounted instead of direct V2MU mounted. To do so, Honeywell suggests using
the following components to ensure system integrity. The selected fittings, thread lengths and seals ensure proper
sealing.
• Aluminum tubing, 14 mm OD x 1 mm thick
• Straight male adapter (parallel) from Aignep, ordering number 10485 00 010
– Remove the flat seal provided with the fitting. There is already a seal inside the nut of the Heat Exchanger, which needs to
be present while fixing this fitting inside the Heat Exchanger.
• Straight female adapter from Aignep, ordering number 10500 00 015
– To avoid leakage between the fitting and the V2MU, add a 18.6 mm OD, 11 mm ID x 1.5 mm thick flat seal constructed of
Klingerit, fiber or equivalent material suitable in water applications (rubber is NOT allowed).
• For the assembly of the fittings and aluminum tubing, follow the recommended procedure of the fitting manufacturer.
• The shape of the aluminum tubing MUST allow for continuous drainage of the condensate over the entire length from the
Heat Exchanger to the V2MU.
IMPORTANT:
• The SV2 series premix valve and its accessories have been developed to provide an optimum fuel-air ratio performance.
• Honeywell cannot guarantee the valve or mixer performance, operation, efficiency or reliability if any non-Honeywell
accessories are used with the SV2 Series premix platform.
• When mounting the heat exchanger vertically, orient its FARMOD port C connection facing upwards so that the condensate
from the FARMOD drains through the heat exchanger and into the mixing unit. Refer to
Excessive moisture can partially or fully clog the pulse lines between the mixing unit and the FARMOD and damage the
FARMOD. In this case, the system will fail safely by causing a flame out, a valve lockout and/or may render the FARMOD
unusable. Note that the FARMOD is field replaceable should this last instance occur.
WARNING!
Direct water ingress (e.g. from mist, rain or pressure
wash) into the pulse lines should be avoided or
prevented
SV2 Series Safety Shut-off Valves
V2F, V2V
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
91
Fig. 49-Fig. 50.