8 | Information about the appliance
Copyright (optional information)6 720 643 068 (2011/06)
3 Information about the appliance
ZBR appliances are boilers for central heating and loading
of an indirect fired DHW tank.
ZWB appliances are combi boilers for central heating and
on demand DHW heating.
The appliances comply with South Coast Air Quality
Management District (SCAQMD) 2012 requirements:
(Type-1) 14 Ng/J NO
x
(and/or 20 ppm at 3% O
2
).
3.1 Proper use
The appliance may only be installed in closed loop hot
water central heating systems.
Any other purpose is considered improper use. Any
resulting damage is excluded from the manufacturer's
warranty.
The commercial and industrial use of the appliance for
generating process heat is not permitted.
3.2 Overview of boiler types
Table 2 describes the meaning of the model number:
Z Central heating appliance
W DHW heating
B Condensing technology
R Constant temperature control
16 Output up to 54,600 BTU/hr (16 kW)
28 Output and DHW output up to 95,500 BTU/hr (28 kW)
35 Output up to 119,400 BTU/hr (35 kW)
42 Output and DHW output up to 143,300 BTU/hr (42 kW)
-3 Version
A Fan-supported appliance
23 Natural gas (NG)
ZBR16-3
A 23
ZBR28-3
A 23
ZBR35-3
A 23
ZBR42-3
A 23
ZWB28-3
A 23
ZWB42-3
A 23
Tab. 2 Appliance types
Appliance AHRI Efficiency Rating
ZBR16-3
96.1 %
ZBR28-3
95.9 %
ZBR35-3
95.0 %
ZBR42-3
94.3 %
ZWB28-3
95.9 %
ZWB42-3
94.3 %
Tab. 3 Initial AHRI Rating
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