Honeywell SV2 Series User Manual page 75

IMPORTANT
• If the Valve Production Cloning procedure is not performed BEFORE replacing the valve main electronics, parameters will
be lost including the valve body size. Additionally, the premix fuel/air OEM Setup + Ignition Setup parameters will be set to
their default values, causing non-optimized ignition and requiring re-programming of lost values.
• DO NOT clone the fuel/air Base Curve during the Valve Production Cloning procedure. If the Base Curve is cloned, the Base
+ Correction Curves that were stored in the FARMOD cannot be uploaded to the new main electronics board.
• The fuel/air valves (V2V) FARMOD and main electronics CANNOT be replaced at the same time or all Honeywell and OEM
factory + field data will be lost, including the valve-specific stepper motor full stroke calibration. If both components must
be replaced, the installer must replace 1 at a time. Follow the Fuel/Air Ratio Module Change-Out Procedure outlined in
CHAPTER 8, restoring power after to preserve the configuration. Then follow the Valve Main Electronics Change-Out
Procedure in CHAPTER 9. This will preserve the most setup parameters.
• The valve main electronics SHALL NOT be replaced with a previously configured main electronics assembly. Using a
previously configured electronics assembly will result in possible data mis-matches, causing random faults or inoperability
of the valve.
Fuel/Air Accessories
Pulse Line Connections
The Fuel/Air Module contains three Pulse Line Connections for connection of air pressure, gas pressure and reference pressure
of a gas/air mixing unit. The connections are indicated by A (gas), B (reference) and C (air) on both the Fuel/Air Module and
the SV2 Series mixing units. Refer to
(FARMOD), the mixing unit, air filter and heat exchanger (if used). Refer to
The pulse line tubing can be plastic or metal, depending on the connection point and approval body requirement. The
Honeywell preferred pulse line connection for the air and reference pressure is aluminum or stainless steel. Refer to the
specifications that follow.
Honeywell offers several fittings and tubing kits to facilitate myriad system configurations as shown in
IMPORTANT:
• The fittings selected by Honeywell from specific brands and types assure free sample flow to and from the SV2 Series fuel/
air ratio premix valve.
• If any other fittings are used, the sample flow to and from the valve can easily get obstructed and affect the combustion
quality.
• For this reason it is strongly recommended to use the fittings listed in
Part Number
V2MUTUBEPL-000B
V2MUFITPLSTR-000B
V2MUFITPL90D-000B
V2MUFITPLTEE-000B
V2MUTUBEAL-000B
V2MUFITMESTR-000B
V2MUFITME90D-000B
Table 17. Pulse Line Kits Selection.
For installation instructions of the pulse lines see the Pulse Line Assembly section contained within the SV2 Series Fuel/Air
Valve Theory of Operation section of this document. You may also refer to the FARMOD installation instructions (32-00040) or
the V2MU mixing unit installation instructions (32-00044).
NOTE: Aluminum pulse line kits come with straight tubing that can be formed to specific application needs by the
customer.
SV2 Series Safety Shut-off Valves
V2F, V2V
Fig. 43. Pulse line tubing and fittings are required between the valve fuel/air ratio module
Description
Plastic feedback tubing kit. Contains (3) 50 meter (164 foot) polyethylene
plastic tubing coils (5.9mm ID, 8mm OD).
Plastic feedback tubing fittings kit, straight. Contains 300 push-in fittings.
Plastic feedback tubing fittings kit, 90 degree. Contains 300 swivel push-in
fittings.
Plastic feedback tubing fittings kit, tee. Contains 100 push-in fittings.
Metal feedback tubing kit. Contains 200 aluminum tubes (7mm ID, 8mm OD,
1000mm long).
Metal feedback tubing fittings kit, straight. Contains 300 compression fittings.
Metal feedback tubing fittings kit, 90 degree. Contains 300 swivel compression
fittings.
SV2 SERIES SAFETY SHUT-OFF VALVES USER MANUAL
Fig. 45.
Table 17.
75
Table 17.
Compatibility
All fuel/air
premix valve
models