Slant/Fin VSL-160C User Manual Part C

13 - USE

13.10.6 – Outdoor reset with room compensation

While in the “Installers’ Menu” (section

13.17) set the parameter to 02. The system will function exactly as described in the previous “Outdoor reset adjustment” sections except that now the boiler pump will stay on permanently . The opening of the room thermostat contacts will translate into a parallel downward movement of the curve in Figures 13-2 and 13-3. The value by which the curve moves downwards can be adjusted by the

parameter present in the

“Installers’ Menu”, see section 13.17. The parameter can range

from 1 °F (1 °C) to 36 °F, (20°C). The suggested values for this parameter are:

- 18 °F (10°C) for high temperature radiator systems;

- 6 °F (3°C) for low temperature radiant panel systems

Calculated temperature (°F)

Outside temperature (°F)

Figure 13-2 - Graph of the outdoor reset adjustment

(inﬂ uence of parameters “br”, “OA”, “Ob” and “Oc”)

Calculated temperature (°F)

Outside temperature (°F)

Figure 13-3 - Graphs of the outdoor reset adjustment

(inﬂ uence of parameter “b”)

V alues of this parameter that are too high may translate into room temperature instability . Values that are too low may make the action of the room thermostat ineffective.

Climatic adjustment with room compensation can be used in all the systems described in Section 13.10.1. The advantage being that the constant running of the pump will stabilize and standardize the room temperatures. This is especially true when some loops in the heating system have considerably greater volume than others.

OA = Slope of the line Ob = Minimum heating

temperature

Oc = Maximum heating

temperature

br = “Fix point” of the angle

fulcrum of the line

b = parallel shift of the line

(adjusted by the heating knob, item “7” of ﬁ gure 13-1)

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13 - USE

13.11 - Boiler switch settings

The control board shown in Figure 3-1, item “14”, contains a series of switches that allow the boiler to be conﬁ gured to match the application. The table below lists each switch and its corresponding funtions.

SWITCH Position Description

1 OFF Boiler without production of D.H.W ON Boiler with production of D.H.W. via storage tank 2 OFF Boiler with production of instantaneous D.H.W. ON Position not available for this serie of boilers 3 OFF Heating pressure switch, disabled ON Heating pressure switch, enabled 4 OFF EBM PAPST brand fan ON Position not available for this serie of boilers 5 OFF Combination boiler for heating and D.H.W. ON Boiler for heating only 6 OFF High temperature heating service, 86°F (30°C) to 176°F (80°C) ON Low temperature heating service, 68°F (20°C) to 113°F (45°C) 7 OFF Boiler conﬁ guration change, disabled ON Boiler conﬁ guration change, enabled 8 OFF Maximum heating supply water temperature of 176°F (80°C) ON Position not available for this kind of boilers

CAUTION!!!

of these switches could cause the boiler to malfunction resulting in improper system performance. Only a qualiﬁ ed technician, with an in-depth knowledge of the boilers’ control system, should change them.

Improper setting

13.12 - Delays, alarms and protective actions

To protect the life of the appliance, improve comfort, and maximize energy savings, the following timings have been incorporated into the control logic: a - Pump delay: each time the room

thermostat is satisﬁ ed, the circulator pump continues to run for 1 minute;

b - DHW delay: each time the domestic

hot water demand is satisﬁ ed, a 2 minutes delay must pass before the heating service is allowed to restart;

c - Protection against legionnaires

bacteria: if the boiler is connected to a DHW storage tank the boiler will increase the tank temperature to 140 °F (60 °C) every seven days, prevent the formation of legionnaires bacteria. This function is displayed

by

d - DHW alarm: if the call for domestic

hot water lasts for longer than two hours, an

This function is only for boilers set up to provide instantaneous DHW.

.

01 alarm is generated.

e - Time delay in restarting the burner:

in its normal functioning state, except when providing domestic water, every time the burner stops, there is a delay time of 3 minutes before the boiler restarts again.

13.13 - Circulator pump and three way valve protection

During the summer months, the circulator is run once a day for around 15 seconds to prevent it from seizing. At the same time, the three way valve (if present) is activated for the same reason.

13.14 - Boiler’s Freeze protection

CAUTION!!!

protection function to work, the boiler must remain connected to the electrical and gas supplies with knobs “7” and “11” in Figure 13-1, in the OFF position.

For the freeze

CAUTION!!!

protection function is conceived to protect the boiler only, not the heating system.

CAUTION!!!

boiler’s freeze protection function depends from the electrical supply and from the gas supply, it is mandatory install a safety device that alarm the user in a case the boiler room will reach a temperature near 35°F (2°C)

Once the boiler has reached a temperature of 45 °F (7 °C), the heating pump will automatically comes on. If the temperature falls below 35 °F (2 °C), the burner will light to prevent the boiler from freezing. If the boiler will not be used for long time it should be drained per Sections

14.10 and 14.11.

This freeze

Because the

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13 - USE

13.15 - Display in energy saving mode

If desired, the display, item “1” and “2” in Figure 13-1, can be switched permanently off, with the exception of when it displays errors or settings. To switch the display off, access the “Installers’ Menu”, in section 13.17

and set the other than zero. Keep in mind that each value will correspond to a delay in minutes until the display goes into Energy Saving mode.

PARAMETER DESCRIPTION INFORMATION ON DISPLAY ITEM “2” of Figure 13-1

parameter at a value

Adjustment of the curve angel as shown in Figure 13-2 when outdoor reset is active per section 13.9.

13.16 - “Users’ menu”

When entering the “Users’ menu”, the display, item “1” in Figure 13-1, will start blinking indicating that a change of mode has taken place. To access the “Users’ menu” (see also Section 17 to better understand the several menus):

1. press the button for 2 seconds until the display starts blinking;

2. press and release the button several times until the desired parameter is displayed;

3. use the or keys, to change the value of the selected parameter;

Setting range: 0,1 to 5,0

4. press to save the parameter change before going to the next parameter.

When the last parameter has been reached and the button

pressed, the display will stop blinking indicating exit from the menu.

NOTE: If no key is pressed for more than 60 seconds, the control automatically exits the “Users’ menu”. Any parameter change not saved

using the button, will be lost. The table below lists each “Users’

menu” parameter, what it affects and its adjustment range.

Adjustment of the “Minimum heating temperature” as shown in Figure 13-2 when outdoor reset is active per section 13.9.

Adjustment of the “Maximum heating temperature” as shown in Figure 13-2 when outdoor reset is active per section 13.9.

Adjustment of the parallel shift of the curve as shown in Figure 13-3 when outdoor reset is active per section 13.9.

Display of the calculated heating temperature when outdoor reset is active per section 13.9, or display of the temperature set by knob “7” shown in Figure 13-1.

Display of the domestic hot water temperature when set by knob “11” shown in Figure 13-1.

Display of last error code registered, Section

13.18.2

Setting range: see section 13.10.3

The adjustment is made by turning knob “7” shown in Figure 13-1. The selected curve can be shifted up or down by 36 °F (20 °C).

Temperature display only, with a range between 68 °F (20 °C) and 189 °F (87 °C).

Temperature display only with a range between 104 °F (40 °C) and 158 °F (70 °C), see section 13.7.

Error code display per section 13.18.2

Display of last lockout occurred, Section

13.18.1

Lockout code per section 13.18.1

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13 - USE

13.17 - “Installer’s menu”

CAUTION!!!

parameters could cause the boiler and therefore the system to malfunction. For this reason, only a qualiﬁ ed technician who has in-depth knowledge of the boiler should change them.

The boiler’s micro-processor makes this menu of parameters available to the qualiﬁ ed technician for the analysis of the functioning and adjustment of the appliance to the system. When entering the “Installers’ Menu”, the display item “1” in Figure 13-1, will start to blink indicating that a change of mode has taken place. To access the “Installers’ Menu” just (see also Section 17 to better understand the several menus):

Changing these

1. press and hold the button down for 12 seconds until the

parameter is displayed;

2. press and release the button to scroll through the list of the parameters;

3. once the parameter has been displayed, it can be changed using

the or keys;

4. press and release the button to conﬁ rm the amended data before moving to the next parameter.

When the last parameter has been reached and the button

pressed, the display will stop blinking indicating the exit from the menu.

NOTE: If no key is pressed for more than 60 seconds, the control automatically exits the “Installers’ menu”. Any parameter change not

saved using the button, will be lost.

The next table lists each “Installers’ menu” parameter, what it affects and its adjustment range.

PARAMETER DESCRIPTION INFORMATION ON DISPLAY ITEM “2” OF FIGURE 13-1

Boiler temperature, measured by U1 sensor

DHW temperature, measured by U2 sensor

Domestic cold water (or ind. water heater) temperature , measured by U3 sensor

Outdoor temperature, measured by U4 sensor

Ionization current value

High limit temperature, measured by U6 sensor

Flue gas temperature, measured by U7 sensor

Heating return temperature, measured by U8 sensor

Type of basic setting of control board

Status of room thermostat contact

Value in °F (cannot be changed)

Value in °F (cannot be changed) Value in °F (cannot be changed) (displayed only if outdoor reset is

active, as per section 13.9) Value from 0 to 99 (cannot be changed)

(30 corresponds to a current of 1uA) (99 corresponds to a current of 5.5 uA)

Value in °F (cannot be changed)

Can be changed in accordance with Section 11.6 00 = contact open (heating service off)

01 = contact closed (heating service on)

Measurement of fan speed rotation

BTU input for heating service

Value in g/1’/100 (rpm/100) (cannot be changed)

Adjustable according to the instructions of section 12.10

Continue

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Continued

PARAMETER DESCRIPTION INFORMATION ON DISPLAY ITEM “2” OF FIGURE 13-1

Can be changed (see Section 13.9):

Heating service functioning mode

00 = thermostatic adjustment; 01 = outdoor reset; 02 = outdoor reset with room compensation;

Reaction to external temperature

Angle fulcrum of climatic adjustment

Reduction of temperature generated by the opening of the room thermostat

Boiler knobs’ status

Display “1” and “2” as per ﬁ gure 13-1 energy saver

Parameter disabled for this kind of boiler

Domestic sensitivity setting

Minimum domestic setpoint during sleep mode

Proportional band of the heating PID modulation

Keep always at value of 1 Can be changed from 16°F (-9°C) to 149°F (65°C) (active only with

outdoor reset). See section 13.10.3 for its adjustment.

Can be changed: from 1°F (1°C) to 36°F (20°C) (active only with outdoor reset featuring room compensation) See section 13.10.6 for its adjustment.

Can be changed: 01 = knobs presents; 00 = knobs absent.

Can be changed: 00 = display always on; any other value, corresponds to a delay in the switching off of the display, expressed in minutes (see also Section 13.15)

No inﬂ uence in this kind of boiler

Must be maintained at 20 value

Integral of the heating PID modulation

Burner Anticycling: minimum delay from a burner light-off to the sequent light-on. Value expressed in sec x 10

Indirect water heater priority selection: Value expressed in minutes.

Must be maintained at 40 value

Can be changed between 1 and 54. Default value is 18 (180 sec). Can be modiﬁ ed only in conjunction with factory technicians.

Can be changed between 00 (function disabled) and 99 minutes. Default value is 00 (See also section 9.1.1).

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13.18 Diagnostics

During the normal operation of the boiler, the display, of Figure 13-1, continually shows the operating status of the boiler as shown below (see also section 17):

PARAMETER

PARAMETER REFERENCE DISPLAY READ OUT (ITEM “2”, FIGURE 13-1)

Boiler in stand-by mode or pause (no request for heating or domestic hot water)

Anti-freeze function active

Boiler not in lock-out mode but in Attention mode.

System pressure too low, system must be ﬁ lled. See section 13.1.

Domestic hot water service active

Heating service active

Boiler in lock-out mode. To reset it, press the the lock-out occurs frequently, contact a professionally qualiﬁ ed

technician Blocking error. Contact a professionally qualiﬁ ed technician. Blocking

errors automatically reset if the condition causing the block disappears

.

button. If

Boiler temperature (°F)

Boiler temperature (°F) 01 = Boiler temperature (°F) Domestic hot

water service active for more than 120 minutes. Turn domestic hot water to OFF position to reinstate heating. 02 = Data connection interrupted between cascade boilers

No display Domestic hot water temperature (°F)

Heating temperature (°F)

Lock-out code (see section 13.18.1 for decodiﬁ cation).

Error code (see section 13.18.2 for decodiﬁ cation).

Auto-purging procedure that last 3 minutes in progress (see section 13.4).

Boiler in Anti-legionella functioning (see section 13.12)

78

Boiler temperature (°F)

Storage tank temperature (°F)

13 - USE

13.18.1 - Diagnostics: “L” lock-outs

“L” Code

L01

L02

L03

L04 L05

L06

Lock-out description

No ﬂ ame detected after three ignition attempts.

Flame extinguishes three times.

Boiler temperature is over 203° F (95°C).

Gas valve command relay Safety relay

Flue gas sensor over 210°F (99°C)

Checks to make

Check: a-correct gas supply pressure (see

section 12.7); b-ignition spark (see section 14.4); c-correct combustion air pressure (see

section 12.8); d-120Vac at the gas valve; e-resistance of the two gas valve coils

should be 0.18 kohm and 1.1 kohm; f- If the burner lights, but goes out at the

end of the ignition attempt, check: that

the ionization current is set at a value

greater than 60 (follow procedure in

section 14.12.4)

Check: a-that the ionization current is set

at a value greater than 60 (follow

procedure in section 14.12.4); b-check that gas valve open fast

enough;

a-Check that the circulator pump is working; b-Check if the water ﬂ ow is not less than 5 GPM

Check for correct polarity of the wires to the pump. Try to switch the wires.

Check: a - that the electrical resistance of the ﬂ ue gas sensor complies with the graph in Section 14.13; b - that the efﬁ ciency of the boiler is over 86%

Solutions

a-If the gas supply pressure is incorrect, it must be adjusted to

the correct pressure;

b-If spark is not present, check for correct ignition ectrode

position and gap as per section 14.4; If position is correct, check for 120Vac at the supply of the spark generator.

c-if the combustion air pressure is incorrect, inspect the vent

system and eliminate any obstructions;

d-if the voltage to the gas valve is not 120Vac the power control

board must be replaced;

e-if the resitance of the gas valve coils is not 0.18 kohm and/or

1.10 kohm, the gas valve must be replaced.

f-If the ionization current is not greater than 60, conﬁ rm that

the the CO2 content is adjusted properly (see section

12.9). Check the ﬂ ame detection electrode (section 14.4) and if necessary replace it, check the integrity of the ﬂ ame detection electrode electrical wires.

a-If the ionization current is not greater than 60, conﬁ rm that

the the CO2 content is adjusted properly (see section

12.9). Check the ﬂ ame detection electrode (section 14.4) and if necessary replace it, check the integrity of the ﬂ ame detection electrode electrical wires.

b-Following procedure as per Section 14.12.4, check few times

if passing from low ﬁ re to high ﬁ re the ﬂ ame estinguish. If estinguish, change the gas valve.

a-If the circulator pump is bad, replace it, if is good, replace the power control board. b-If the water ﬂ ow is less than 5 GPM check for any zone

valves that must be opened. Replace the power control board

If the pump won’t run replace it. If the pump is good try to replace the power control board.

a-If the ﬂ ue gas sensor resistance does not correspond with the

correct values, replace it;

b-if the boiler efﬁ ciency is less than 86% and the CO2 content

is correct, the primary heat exchanger has to be replaced and proper water treatment methods employed to prevent mineral build up on the water side

L07

L08 L09

L10 L12 L13 L14 L15 L16

L17

Electrical circuit of ﬂ ue gas sensor is interrupted

Spark generator relay

RAM memory E2prom memory damaged

E2prom memory damaged Program error Program error Program error Program error The temperature

difference between the U1 and U6 sensors is too great

Check that the electrical resistance of the ﬂ ue gas sensor corresponds with the

graph in section 14.13;

Check that: a - the electrical resistance of the two sensors corresponds with the graph in section 14.13; b -check that the heating water ﬂ ow is not too low.

79

If the sensor resistance does not correspond with the correct values, replace it;

Replace the power control board Replace the power control board

Replace the power control board Replace the power control board Replace the power control board Replace the power control board a-If one or both sensors does not have the correct resistance

value, it must be replaced;

b-If temperature difference between U1 and U8 is higher than

55°F at maximum input, the heating water ﬂ ow rate is too low. The heating water ﬂ ow rate must be corrected.

13 - USE

13.18.1 - Diagnostics: “L” lock-outs (continued)

“L” Code

L18

L19

L20

L21

L25

L32 L33

L45

L46

Lock-out description

Program error

Flame sensed for 10 seconds, after the closure of the gas valve

Flame sensed before opening of the gas valve.

Boiler in blocking state for more than 20 hours

U1 or U6 sensor increase its temperature too fast

Program error Fan rotation error

Heating circuit ﬁ lling time longer than 10 minutes.

Filling of heating circuit repeated 16 times in 24 hours

Controls

Check: a - that the heating water ﬂ ow is not too

low;

b - that the circulator pump is working

Check that the voltage to the fan is 163(±10)Vdc.

Check: a - that the heating pressure switch

setting pressure, FILL appears when the pressure drops below 8.7 psi (0,6 bar), and disappears when the pressure rises above 22 psi (1.5 bar);

b - check that there are no water leaks

in the heating system.

Solutions

Replace the power control board

Call technical service

Press RESET button and check the blocking error “E” on Section 13.18.2

a - If temperature difference between U1 and U8 is higher than

55°F (31°C), at maximum input, the heating water ﬂ ow rate is too low. The heating water ﬂ ow rate must be corrected.

b - If the pump works, replace the power control board.

Replace the power control board

If the fan is powered with 163Vdc, replace the fan. If the voltage to the fan is not 163 Vdc, replace the board.

a -If the heating pressure switch is not correctly set, it must be

replaced;

b - if the system has a leak, it must be ﬁ xed.

L47

Flue pressure switch open time longer than 60 minutes

Check: a - that no obstructions are in the ﬂ ue

discharge/air intake line

b - check the ﬂ ue pressure switch

setting point, setting is 4.5 in.W.C

c - check that the electrical resistance of

the ﬂ ue gas sensor corresponds with the graph in section 14.13;

d - check that the electrical connection

cables between the ﬂ ue pressure switch, the ﬂ ue sensor and the power control board.

a -If ther’is an obstruction, it must be removed; b - If the ﬂ ue pressure switch is not correctly set, it must be

replaced;

c - If the ﬂ ue sensor resistance does not correspond, it must be

replaced;

d - if the electrical circuit is damaged, it must be repaired; if the previous four cases do not apply, replace the power

control board

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13.18.2 - Diagnostics: “E” blocking errors “E”

Code

E01

E02

E04

E07

Blocking description

U1 boiler temperature sensor circuit interrupted.

U2 domestic hot water temperature sensor circuit interrupted.

U8 return temperature sensor circuit interrupted

U3 cold water or indirect water heater sensor circuit interrupted

Checks to make

Check that the electrical resistance of the sensor corresponds with the graph in section 14.13; check that the electrical connection cables between the sensor and the power control board have continuity and carry current

Solutions

If the sensor resistance does not correspond, it must be replaced; if the electrical circuit is damaged, it must be repaired; if the previous two cases do not apply, replace the power control board

E08

E11

E12

E13

U6 boiler temperature sensor circuit interrupted.

U1 boiler temperature sensor circuit shortcircuited.

U2 domestic hot water temperature sensor circuit short-circuited

Erroneous temperature reading.

Check that the electrical resistance of the sensor corresponds with the graph in section 14.13; check that the electrical connection cables between the sensor and the power control board have continuity and carry current

If the sensor resistance does not correspond, it must be replaced; if the electrical circuit is damaged, it must be repaired; if the previous two cases do not apply, replace the power control board

Replace the power control board

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13.18.2 - Diagnostics: “E” blocking errors (continued)

“E” Code

E14

E15

E16 E17

E18

E19 E20

E21 E22

E23

E30

Blocking description

U8 return temperature sensor short-circuited

U4 outside sensor shortcircuited

Erroneous temperature reading.

U3 cold water temperature or indirect water heater temperature sensor circuit shorted

U6 boiler temperature sensor circuit shorted

E2prom memory damaged

Flame presence with gas valve closed

Phase and neutral inverted

Electrical supply frequency other than 60Hz

Ground connection is absent

Erroneous temperature reading.

Checks to make

Check that the electrical resistance of the sensor corresponds with the graph in section 14.13; check that the electrical connection cables between the sensor and the power control board have continuity and carry current Check that the electrical resistance of the sensor corresponds with the graph in section 14.14; check that the electrical connection cables between the sensor and the power control board have continuity and carry current

Check that the electrical resistance of the sensor corresponds with the graph in section 14.13; check that the electrical connection cables between the sensor and the power control board have continuity and carry current

Invert phase and neutral Check the electrical frequency of the

system. Check if CS parameter is at 03 (see section 17)

Check if the boiler is properly grounded

Solutions

If the sensor resistance does not correspond, it must be replaced; if the electrical circuit is damaged, it must be repaired; if the previous two cases do not apply, replace the power control board

Replace the power control board If the sensor resistance does not correspond, it must be

replaced; if the electrical circuit is damaged, it must be repaired; if the previous two cases do not apply, replace the power control board

If the sensor resistance does not correspond, it must be replaced; if the electrical circuit is damaged, it must be repaired; if the previous two cases do not apply, replace the power control board

Replace the command and control board

Replace the gas valve

If phase and neutral are correctly wired, replace the power and control board

If the electrical supply frequency is other than 60Hz, contact the electric company; if the mains frequency is 60Hz, replace the command and control board. Make sure that the CS parameter is at 03.

if the boiler is properly grounded, replace the power control board

Replace the power control board

E31

E32 E33

E42 E50

E51

E52 E53

Erroneous temperature reading.

Program error

Error in the boiler tY parameter selection

Reset button pressed too often in a short period time

Heating ﬂ ow switch closed

Heating ﬂ ow switch open

Move ON switches 7 an set again the correct tY value (see section 17)

Check if the heating pump is running. Check if the ﬂ ow switch contact is stuck

Check if the heating pump is running. Check if the ﬂ ow switch contact is broken

82

Replace the power control board

If tY value is correct, change the power control board

The pump should not run and the contanct should open The contact must be open

The pump should run and the contact should closed The contact must be closed

14 - MAINTENANCE

14.1 - Care and maintenance

This section must be brought to the attention of the user by the installer so that the user can make the necessary arrangements with a qualiﬁ ed service agency for the periodic care and maintenance of the boiler. User must check its boiler follow Table 14-1 column “User maintenance”. The installer must also inform the user that the lack of proper care and maintenance of this boiler and any fuel burning equipment may result in a hazardous condition. Installer should discuss contents of the Section 13 (User’s section) with the user.

Service and maintenance schedules

Service Technician User maintenance

Annual Startup:

A trained and qualiﬁ ed service technician should perform the inspection listed in these instructions before each heating season and at regular intervals.

WARNING!!!

inspection and adjustment must be done by a trained technician in accordance with all applicable local and national codes. Improper servicing or adjustment could damage the boiler! Failure to comply with this warning can result in a ﬁ re or explosion causing property damage, personal injury or loss of life!

Servicing,

Daily:

WARNING!!!

combustible materials, gasoline or any product containing ﬂ ammable vapors and liquids in the vicinity of the boiler. Failure to comply with this warning can result in extensive property damage, severe personal injury or death!

Never store

- Address reported problems (Follow section 14.1.1);

- Check all piping for leaks (Follow section 14.1.2)

- Verify ﬂ ue and air lines in good condition and sealed tight (Follow section 14.1.3);

- Check system water pressure/system piping/ expansion tank (Follow section 14.1.4);

- Check control settings (Follow section 14.1.5);

- Check ignition and ﬂ ame sense electrodes (Follow section 14.1.6);

- Check wiring and connections (Follow section

14.1.7);

- Perform performance veriﬁ cation (Follow section

14.1.8);

- Flame inspection (Follow section 14.1.9);

- Check ﬂ ame signal (Follow section 14.1.10);

- Clean the heat exchanger if ﬂ ue temperature is more than 72°F (40°C) above return water temperature (Follow section 14.3).

- Clean condensate trap (Follow section 14.5).

- Check combustion air pressure (Follow section

12.8).

- Check relief valve (Follow section 14.1.11);

- Check for any air inside the domestic heat exchanger (Follow section 12.1.4);

- Check any domestic water softener if need any maintenance (follow softener’s manufacturer instructions)

- Check boiler area (Follow section 14.1.12);

- Check pressure gauge (Follow section 14.1.13);

Monthly:

- Check vent piping (Follow section 14.1.14);

- Check air piping (Follow section 14.1.15);

- Check condensate drain system (Follow section

14.1.16);

Every six month:

- Check boiler piping (gas and water) for leaks (Follow section 14.1.17);

End of season months:

- Shut boiler down (unless boiler used for domestic hot water) (Follow section 14.1.18);

Table 14-1 - Service and Maintenance Schedules

83

Slant/Fin VSL-160C User Manual Part C

Specifications and Main Features

Frequently Asked Questions

User Manual