Leslie Controls NYC Heat Exchanger - Manual (Page 9)

Page 9 of 25
pump should fail then Red light for “NO_FLOW” will
light. Follow instructions for isolating this pump and
starting primary pump or shutting down system.
F. OPERATION OF SWITCH
PANEL
(Ref Figure 2)
Light/Switch Indication Notes
Power On Green Electrical
power is
being
supplied to
unit.
Pump 1 On Primary pump P1 is
on. Green Pump can
have power
but not pump
fluid
Pump 2 On Secondary Pump
P2 is on. Green Pump can
have power
but not pump
fluid
No Pump
Flow Re-circulation
system flow has
stopped. Red Water
pressure
before pumps
is same as
after pumps
No. 1 Heater
Over Temp Hot water is off.
Red One or more
temp
controllers on
side one
detected an
over temp
condition.
No. 2 Heater
Over Temp Hot water is off.
Red One or more
temp
controllers on
side two
detected an
over temp
condition.
H-1 Turn hot water to
side one on Turns system
on (Both
switches need
to be on)
H-2 Turn hot water to
side two on Turns system
on (Both
switches need
to be on)
P-1 Select primary
pump on, secondary
off Power to
primary
pump. Off to
secondary
P-2 Select secondary
pump on, primary
off Power to
secondary
pump. Off to
primary
Reset Momentary switch
to reset from a fail
condition Fail condition
latches unit to
supply only
cold water
G. OPERATION DUE TO OVER
TEMPERATURE CONDITIONS
Temperature switch settings:
First switch = 180 degrees F
WARNING!
Pressure may be present in the pump body. Loosening
flange bolts and shifting pump assembly slightly to
allow pressurized water to escape can relieve this
pressure. Failure to follow these instructions could
result in serious personal injury or death
WARNING!
When disassembling a gasketed joint, always use a new
gasket upon reassembly. NEVER RE-USE OLD
GASKETS. Failure to follow these instructions could
result in serious personal injury or death
WARNING!
Pressurize the body slowly while checking for leaks at
all joint with gaskets. NEVER RE-USE OLD
GASKETS. Failure to follow these instructions could
result in serious personal injury or death
CAUTION!
Do not run pumps dry, seal damage may occur. Failure
to follow these instructions could result in serious
personal injury or death
CAUTION!
IF AN OVER TEMPERATURE CONDITION WAS
DETECTED:
1. The hot water supply is shut off and only cold
water is supplied to building.
2. Re-circulation pump power is turned off.
3. Condensate bypasses cooler.
RESET WILL OCCUR AUTOMATICALY AFTER
WATER TEMPERATURE REDUCES AND
RECIRCULATION CONTINUES