Zodiac Legacy LRZ, Installation And Operation Manual

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Installation and Operation Manual
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Legacy™ Model LRZM Pool/Spa Heater
wise recommended in writing by Zodiac, if in doubt
please ask. Any direct connection of a control device
not approved by Zodiac, could invalidate the Gas
Appliance Directive (GAD) certification, the normal
Legacy heater warranty, and could also violate appli-
cable gas safety regulations.
2.3 General installation requirements
The Legacy heater must be installed by compe-
tent persons (e.g., registered member of Safe Gas).
The Legacy heater must be installed in accordance
with the relevant requirements of the Gas Safety
Regulations, current I.E.E. Regulations, Model Water
Bylaws, local Water Authority Bylaws, and any
relevant requirements of local gas region, local author-
ity, and relevant British Standard Codes of Practice
and Building Regulations.
2.4 Field assembly
The Legacy Model LRZ millivolt heater is
shipped from the factory with the top assembly in
the low-profile flueless Type A configuration for
outdoor installation. The Legacy Model LRZ millivolt
heater is design certified for indoor installation when
equipped with a draft hood and Type B11 flue, which
must be installed without modification.
Check the rating plate on the heater or the Parts
List (Section 12) of this manual for the correct Zodiac
draft hood or vent cap part number. See instructions
supplied with the draft hood or vent cap for instal-
lation and attachment. When the draft hood is used,
locate the heater so as to be in the same atmospheric
pressure zone as the combustion air inlet to the heater.
2.5 location requirements
2.5.1 introduction
Caution
When pool equipment is located below the pool
surface, a leak from any component can cause
large scale water loss or flooding. Zodiac cannot be
responsible for such water loss or flooding or result -
ing damage.
The Legacy Model LRZ millivolt heater may
be installed indoors or outdoors as outlined in later
sections. Location of the heater below or above the
pool water level affects operation of its water pressure
switch. See sections on water piping and heater start-
up for more information about this.
Avoid placing the heater in locations where it can
cause damage by water or condensate leakage. If this
is not possible, provide a suitable drain pan to catch
and divert any leakage. The pan must not restrict the
air flow around the heater.
All criteria given in the following sections
reflect minimum clearances as stated in the national
standards. However, each installation must also be
evaluated, taking into account the prevailing local
conditions such as wind speed and direction, proxim-
ity and height of walls that may block ventilation, and
proximity to public access areas.
2.5.2 Clearances
The heater must be placed to provide clearances
on all sides for maintenance and inspection. There
must also be minimum distances maintained from
combustible surfaces (see Table 3).
LRZ M Size (In BTU Input)
125 BTU 175 BTU 250 BTU 325 BTU 400 BTU
Nat.
Gas
LPG
Nat.
Gas
LPG
Nat.
Gas
LPG
Nat.
Gas
LPG
Nat.
Gas
LPG
Heat Input Gross (kW) 40,7 40,7 56,9 56,9 81,5 81,5 105,9 105,9 130,3 130,3
Heat Input Net (kW) 36,7 36,7 51,3 51,3 73,4 73,4 95,4 95,4 117,4 117,4
Heat Output (kW) 28,6 28,6 41,1 41,1 58,7 58,7 76,8 76,8 95,1 95,1
Max. Burner Pressure
(mbar)
9 22,4 9 22,4 9 22,4 9 22,4 9 22,4
Gas Rate (m
3
/h) G20 3,5 -- 4.9 -- 7 -- 9,1 -- 11,2 --
Gas Rate (m
3
/h) G30 -- 1,05 -- 1,48 -- 2,3 -- 2,99 -- 3,47
Flue Gas Volume
4.5% CO2, 120C (l/sec) 32,1 -- 44,9 -- 64,1 -- 83,9 -- 102,8 --
Flue Gas Volume
4.5% CO2, 120C (l/sec)
G30 -- 32,3 -- 45,3 -- 70,3 -- 91,4 -- 106,4
Injector Diameter (mm
and marking)
(2,26)
Marked
43
(1,51)
Marked
53
(2,26)
Marked
43
(1,51)
Marked
53
(2,26)
Marked
43
(1,51)
Marked
53
(2,26)
Marked
43
(1,51)
Marked
53
(2,26)
Marked
43
(1,51)
Marked
53
Table 2. LRZ M Performance Specifications