Lynx Model LX-85A
18
At 9.1m (30 ft.) length of pipe, match required
capacity from table on this page (choose higher
capacity, in this case is 4.3m
3
/hr. [152 cu. ft. per hr]).
Required pipe size is 19mm (3/4".)
Improper gas pipe sizing will result in flame outages,
insufficient heat and other installation difficulties. For
more information and also if other appliances are to
be attached to the piping system, see Appendix C of
National Fuel Gas Code ANSI Z223.1-latest edition.
C. The boiler and its gas connection must be leak tested
before placing the boiler in operation. Use liquid soap
solution for all gas leak testing. DO NOT use open flame.
This boiler and it’s individual shutoff valve must be
disconnected from the gas supply piping system during
pressure testing of that system at test pressures in excess
of 3.5 kPa (1/2 PSIG). This boiler must be isolated from
the gas supply piping system by closing its individual
manual shutoff valve during any pressure testing of the
gas supply piping system at test pressures equal to or
less than 3.5 kPa (1/2 PSIG).
D. All gas piping used should be inspected thoroughly for
cleanliness before makeup. A sediment trap is integrally
provided, as illustrated on page 3.
E. The minimum and maximum gas supply pressure (at the
inlet of gas valve) is shown on the boiler rating plate for
the type of gas used. Gas supply pressure should never
be less than minimum or more than maximum pressure
when the boiler or any other appliance is turned on or off.
ELECTRICAL WIRING
All field wiring to the boiler is connected to the 2 sets of
terminal strips, located in a junction box behind the jacket top
panel. (See Figure 3, on page 3)
1. Power Supply
A separately fused circuit is recommended. Use standard
15 Amp. fuse or breaker and 14 gage conductors in BX
cable or conduit.
Provide disconnect means and overload protection as
required. See boiler wiring diagram (Figure 16a) boiler
control (Figure16b) and ladder diagram (Figure 16c).
Boiler must be electrically grounded in accordance with
the requirements of the authority having jurisdiction, or, in
the absence of such requirements, with the Canadian
Electrical Code, CSA-C22-1 part 1-latest edition.
Proper polarity is critical for the power supply connec -
tions. Reversed polarity will cause system lockout. Proper
grounding is critical for boiler operation, connect the
ground wire to the green ground screw next to the line
voltage terminal strip.
2. Circulator(s)
A set of terminals is provided for the
boiler loop
circulator
.
Do not
wire any other circulators to these
terminals. Additional circulators for the space heating loop
or domestic water tank require a separate power source
and may require the use of relays.
For multiple zoning, either zone valves or circulators may
be used.
For zone valve system (See Figure 17a).
For pump zoning system (See Figure 17b, c, d, e).
DO NOT use boiler transformer to power external
accessories like zone valves and relays, overload and/or
burned out transformer and boiler malfunction can result.
Use a separate transformer to power such components.
A second set of terminals is provided for the domestic hot
water tank circulator (if used). The boiler loop circulator is
always de-energized when the DHW tank circulator is
energized, or vice-versa, depending on the priority feature
selected.
3. SPACE HEATING THERMOSTAT(S)
Install thermostat on an inside wall and away from any
heat sources, sunshine and drafts. A set of terminals is
provided for connection of 24 volt style thermostats,
relays or zone valve end switches (isolated contacts).
(See wiring diagrams Figure 16a,17a, 17 b, 17c, 17d,
17e).
Thermostat heat anticipator: For a non-zoned system set
thermostat heat anticipator to 0.1 Amps, for a zoned
system set to match power requirements of zone valves
or relays. Refer to manufacturer’s instructions and
specifications. Also see instructions with thermostat.
4. DOMESTIC HOT WATER TANK THERMOSTAT
A set of terminals is provided for connection of the DHW
tank thermostat (if used). (See wiring diagram Figure
16a).
5. OUTDOOR AIR SENSOR
A set of terminals is provided for connection of an outdoor
air sensor (if this method is used). (See wiring diagram
Figure 16a).
The outdoor air sensor that is supplied with the boiler is a
12k ohm type. Mount on an outside wall, shielded from
direct sunlight or flow of heat or cooling from other
sources. See instructions provided with sensor.
DANGER: Before wiring always turn off electric power
supply. Otherwise, shock or death can result.
13mm (1/2")
19mm (3/4")
25mm (1")
32mm (1-1/4") 38mm (1-1/2")
m
ft
m
3
/hr cu.ft./hr. m
3
/hr cu.ft./hr. m
3
/hr cu.ft./hr. m
3
/hr cu.ft./hr. m
3
/hr cu.ft./hr.
3.0
10
3.7
132
7.9
278
14.7 520
29.7 1050
45.3 1600
6.1
20
2.6
92
5.4
190
9.9
350
20.7 730
31.1 1100
9.1
30
2.1
73
4.3
152
8.1
285
16.7 590
25.2 890
12.2
40
1.8
63
3.7
130
6.9
245
14.2 500
21.5 760
15.2
50
1.6
56
3.3
115
6.1
215
12.5 440
19.0 670
18.3
60
1.4
50
3.0
105
5.5
195
11.3 400
17.3 610
21.3
70
1.3
46
2.7
96
5.1
180
10.5 370
15.9 560
24.3
80
1.2
43
2.5
90
4.8
170
9.9
350
15.0 530
27.4
90
1.1
40
2.4
84
4.5
160
9.1
320
13.9 490
30.5
100
1.1
38
2.2
79
4.2
150
8.6
305
13.0 460
Length
of Pipe
Gas Flow In Piping
Pressure drop = 8mm (0.3") water column, 0.60 specific
gravity gas.
Iron Pipe Size (Ips)—inches
At pressure drop of 8mm (0.3") water column, 0.60 specific gravity gas.
