B&D Mfg HSS - Manual (Page 4)

4
THERMOSTAT WIRING
The HSS
®
can provide heating/cooling control and heating only control
depending on the system requirements. Any terminal block located on the
HSS
®
control board can be used for heating and/or cooling however the
HO/HC jumper must be on HC to enable cooling control for its corresponding
zone. (See schematic on page 7)
Heating & Heating Cooling- Connect thermostat wire R to its corresponding
pump zone on the HSS
®
Control R terminal. Connect thermostat wire Y to its
corresponding pump zone on the HSS
®
Control Y terminal. If the zone
thermostat requires 24V power connect thermostat wire C to its corresponding
pump zone on the HSS
®
Control C terminal.
Master Heating/Cooling- The Heat/Cool master thermostat determines the
system Heat/Cool setting. Connect thermostat wire R to its corresponding
pump zone on the HSS
®
Control R terminal. Connect thermostat wire Y to its
corresponding pump zone on the HSS
®
Control Y terminal. Connect
thermostat wire O to its corresponding pump zone on the HSS
®
Control O
terminal. If the zone thermostat requires 24V power connect thermostat wire
C to its corresponding pump zone on the HSS
®
Control C terminal.
PIPING HOOKUP
(see schematic page 7)
The HSS
®
Buffer Tank has Stainless Steel unions and pipe connections. It is
recommended when using transition fittings between steel and PVC, CPVC or
PE style plastic pipe. Extreme caution must be used when inserting steel into
plastic fittings or plastic into steel fittings. The HSS
®
Buffer Tank does
experience a wide range of temperature and over tightening of plastics fittings
can lead to fitting failures, water loss with in the HSS
®
Buffer Tank and
extreme cases, pump failure due to lack of water. It is recommended on plastic
style threaded joints the joint be snugged only and a good grade of thread
sealant be used. The system, once filled and purged, has capabilities of having
air handlers approximately 30' higher than the lid of the Buffer Tank and the
lid may be removed without water spilling out of the tank. All threaded fittings
on the HSS
®
Buffer Tank should be backed up with and additional wrench to
ensure damage does not occur to the Buffer Tank from twisting of fittings. All
lines should be insulated to prevent condensation forming on lines.