Bacharach PCA 2 24-9448 - Manual (Page 38)

Instruction 24-9448 4-4
Operation
4.4 Sampling Point
FORCED AIR FURNACE – For atmospherc burner
or gravty vented, forced ar heatng equpment
wth a clamshell or sectonal heat exchanger de-
sgn, test each of the exhaust ports at the top of the
heat exchanger. The probe should be nserted back
nto each of the exhaust ports to obtan a flue-gas
sample, before any dluton ar s mxed n.
HOT WATER TANK – Domestc hot water tanks
wth the ‘bell’ shaped draft dverter can be ac-
curately tested by nsertng the probe tp drectly
nto the top of the fre tube below the dverter.
80% EFFICIENCY FAN ASSIST OR POWER VENTED
– Combuston testng of fan assst or power vented,
furnaces/bolers should be done through a hole drlled
n the vent mmedately above the nducer fan.
90% EFFICIENCY CONDENSING – Condens-
ng furnaces/bolers can be tested through a hole
drlled n the plastc vent ppe (when allowed by
the manufacturer or local authorty of jursdcton)
or taken from the exhaust termnaton.
ATMOSPHERIC OR GRAVITY VENTED BOILER
– Bolers, whch have a ‘bell’ shaped draft dverter
on top, should be tested drectly below the dverter
through a hole drlled n the vent connector.
Forced Air Furnace
Hot Water Tank
Atmospheric or Gravity
Vented Boiler
80% Eff. Fan Assist or
Power Vented
90% Eff. Condensing
O
2
,
CO,
Stack Temp.
Undiluted Flue
Gas Sample Taken
Under Draft
Diverter in Top
of Fire Tube
O
2
, CO,
Stack Temp.
O
2
, CO,
Stack Temp.
Combustion Air
Sampling Point
O
2
, CO,
Stack Temp.