Lochinvar 3.5, 1.5, 2.5 service manual Setback HWG Night

Page 16

Service Manual

1 Service

Parameter table

Table 1B (continued from previous page) This table lists SMART TOUCH control module parameters and where to access them

Menu

SETBACK

H

HWG NIGHT

 

MOD BUS

I

 

CASCADE

J

 

Sub

Parameter Name

See

Min

Max

Default

User

Installer

 

 

 

 

 

Item

(as shown on the LCD screen)

Page

Value

Value

Value

Access

Access

1

HWG Night Setback Offset Temp

22

0

90

0

No

Yes

 

 

 

 

 

 

 

 

2

HWG Night Setback Mon End

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

3

HWG Night Setback Mon Begin

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

4

HWG Night Setback Tue End

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

5

HWG Night Setback Tue Begin

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

6

HWG Night Setback Wed End

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

7

HWG Night Setback Wed Begin

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

8

HWG Night Setback Thur End

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

9

HWG Night Setback Thur Begin

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

10

HWG Night Setback Fri End

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

11

HWG Night Setback Fri Begin

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

12

HWG Night Setback Sat End

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

13

HWG Night Setback Sat Begin

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

14

HWG Night Setback Sun End

22

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

15

HWG Night Setback Sun Begin

22

N/A

N/A

N/A

No

Yes

1

ModBus Active / Inactive

23

ACTIVE

INACTIVE

INACTIVE

No

Yes

 

 

 

 

 

 

 

 

2

ModBus Out of Order Timer

23

5

120

30

No

Yes

1

Cascade Active / Inactive

23

ACTIVE

INACTIVE

INACTIVE

No

Yes

 

 

 

 

 

 

 

 

2

Cascade Address

23

0

7

1

No

Yes

 

 

 

 

 

 

 

 

3

Cascade Offset

23

0

40

10

No

Yes

 

 

 

 

 

 

 

 

4

Cascade Differential

23

0

72

20

No

Yes

5

Max Boiler Setpoint for Cascade

23

32

185

185

No

Yes

 

 

 

 

 

 

 

 

6

Cascade Type

23

N/A

N/A

N/A

No

Yes

 

 

 

 

 

 

 

 

7

Block Time Switching Boiler On / Off

23

0

255

60

No

Yes

 

 

 

 

 

 

 

 

8

Minimum Next On Time

24

0

255

60

No

Yes

 

 

 

 

 

 

 

 

9

Rate % to Switch On Next Boiler

24

1

100

80

No

Yes

 

 

 

 

 

 

 

 

10

Rate % to Switch Off Last Boiler

24

1

100

10

No

Yes

 

 

 

 

 

 

 

 

11

Number of Boiler Pumps Always On

24

0

8

0

No

Yes

 

 

 

 

 

 

 

 

16

Page 15 Page 17
Image 16
Page 15 Page 17
Contents Models 1.5 2.0 2.5 3.0 Contents Handling ceramic fiber materials Please read before proceedingNiosh stated First Aid When servicing boiler What is in this manual? ServiceMaintenance TroubleshootingService Boiler pipingHome Screen Smart Control Module Control inputsControl outputs StripAccess modes General OperationHow the boiler operates How the control modules operateTo adjust and save parameters reference FIG Sequence of operation Sub Parameter Name See Min Max Default User Installer Value AccessParameter table MenuDelay Ramp BMS Setup Setback HWG Night Pumps Viewable and changeable control parameters Initial SetupSet Points Outdoor Reset Ramp Delay Advanced Setup SH/HWG Night Setback ModBus CascadeCascade Offset Minimum On/Off TimePumps Service Notification Service Notification in MonthsService Notification Running Hours Service Notification CyclesService Cascade Screen 8Cascade ScreenGraph Screen 9Graph ScreenParameter SelectionService History Screen 11History ScreenLockout Faults13History ScreenRuntime History Service Screen 14Service ScreenMaintenance Maintenance and annual startup Service technicianOwner maintenance See the Crest User’s Information Manual for InstructionsMaintenance Flue vent system and air piping Check water systemCheck expansion tank Check boiler relief valveCheck ignition ground wiring Check all boiler wiringCheck control settings Check flame signalCleaning boiler heat exchanger Review with ownerTroubleshooting Before troubleshootingCheck the following Check control module fusesTroubleshooting Checking temperature sensors No Pump Low Water Cutoff OpenFlame Failure Anti-cyclingIgnition Flame Out Flame Out SequenceRunning Gas Valve / Relay Failure Unit was running and lost the flameAuto Reset Manual ResetHigh Limit High Limit OpenFault Description Corrective Action Louver Proving Sw Open Flue Temp HighDelta T High Outlet TempService Blk Outlet Temp HighRem Ctrl Flt Parameters SavedSwitch Open Sensor OpenSensor Shorted Flue SensorBurner Supply TemperatureDifferential Resets Try Later Internal FaultToo Many Writing toWatch Dog Error No Error StoredWrite EEProm CRC ParametersCombustion Analysis Procedure Gas Valve AdjustmentOr Obstruction Gas Supply PressureGas valve adjustment procedure 2Gas Valve Adjustment Models 1.5Page
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3, 2, 3.5, 2.5, 1.5 specifications

Lochinvar is a leader in manufacturing high-efficiency water heating solutions, and their Lochinvar 1.5, 1.3, and 1.0 models exemplify the company's commitment to innovation and performance. These advanced heating systems are designed to meet the diverse needs of commercial and residential applications, providing reliable hot water while ensuring energy efficiency and environmental sustainability.

The Lochinvar 1.5, 1.3, and 1.0 models incorporate cutting-edge technologies that set them apart from traditional water heaters. One of the most notable features is their use of high-efficiency condensing technology, which extracts maximum heat from the combustion process. This process allows the units to achieve high thermal efficiencies, often exceeding 95%, which not only reduces energy costs but also lowers greenhouse gas emissions.

In terms of design, Lochinvar's models are constructed with durable materials, ensuring longevity and reliability in demanding environments. The stainless steel heat exchanger is a key element that contributes to the durability and performance of the units. This material is resistant to corrosion and scale build-up, enhancing the lifespan of the heater and reducing maintenance requirements.

The Lochinvar 1.5, 1.3, and 1.0 models feature advanced control systems that provide precise temperature management and easy operation. The intuitive digital display allows users to monitor performance metrics, temperature settings, and energy consumption with ease. Additionally, these units are equipped with intelligent modulating gas valves that optimize fuel usage based on demand, ensuring efficient operation across various load conditions.

Safety is a priority in the design of Lochinvar's water heaters. The models come with built-in safety features, including flame failure detection, overheat protection, and venting safeguards. These systems work together to ensure the safe operation of the units, giving users peace of mind.

Another characteristic that makes the Lochinvar 1.5, 1.3, and 1.0 models popular among users is their compact design. These units are engineered to fit in tight spaces, making them ideal for installations where space is at a premium. Despite their small footprint, they deliver powerful performance, ensuring that users have access to the hot water they need.

In summary, Lochinvar's 1.5, 1.3, and 1.0 water heating models represent the pinnacle of efficiency, safety, and reliability. With their advanced technologies, durable construction, and user-friendly features, these units are an excellent choice for anyone seeking a high-performance water heating solution.
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