Glow-worm Ultrapower 170sxi Installation And Servicing page 9

2 Boiler Dimensions & Hydraulic Schematic
PRIMARY CIRCUIT
FLOW THERMISTOR
PRESSURE
SENSOR
CONNECTOR
BYPASS
FILTER
CONNECTOR
AUTOMATIC
ADJUSTABLE
BYPASS
TPRV
TUNDISH
'A'
TANK
THERMISTOR
FILLING
LOOP
DHW
CH
FLOW
Supplied By www.heating spares.co Tel. 0161 620 6677
PRIMARY HEAT
EXCHANGER
GAS
CONTROL
VALVE
DHW
THERMISTOR
SHIFT LOAD
PRV
TANK
IMMERSION
HEATER
TUNDISH
'A'
DT
GAS
9
PRIMARY CIRCUIT
RETURN THERMISTOR
AUTOMATIC
AIR VENT
HEATING
PUMP
3 WAY VALVE
PLATE TO PLATE
HEAT EXCHANGER
DOMESTIC
PUMP
PRESSURE
REDUCING
VALVE
DCW CH
RETURN
HEATING WATER
EXPANSION
VESSEL
PRV
M
TUNDISH
'B'
Diagram 2.2