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Lochinvar
402 - 2072 operation manual
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Contents
Main
Installation & Operation Manual Models: 402 - 2072
Contents
Hazard definitions
DANGER WARNING CAUTION CAUTION NOTICE
Please read before proceeding
Warranty
Checking equipment
Special instructions
Please read before proceeding
Codes
Owner warning
Prevention of freezing
Page
The Copper-fin II - How it works...
The Copper-fin II - How it works... (continued)
Models 992 - 2072 Left Side (inside unit) Models 992 - 2072 Right Side (inside unit)
Models 992 - 2072 Rear View Models 992 - 2072 Front View
Ratings
Copper-fin II I=B=R Rating
Other Specifications
Location of unit
Freeze protection
TABLE - 1A
Indoor clearances from combustible construction
Combustion and ventilation air
Combustion air options
Location
Outdoor boiler installation
Hydronic systems anti-freeze
1
BEFORE YOU BEGIN
Identify your appliances vent system:
Venting Category Definitions:
A B C
Vent system options:
A
B
C
TABLE - 2A
General information
Venting support
Barometric damper location
A
Negative draft
Vertical vent termination clearances and location
Page
2
Length of air inlet pipe
Sidewall air inlet
Combustion air inlet piping
Vertical DirectAire venting -
Vertical Rooftop Air Inlet
Combined air inlet points
TABLE - 2B
2
Sidewall venting
C
Page
TABLE - 2C
Horizontal DirectAire venting (Powered Venting)
Venting of flue products
TABLE - 2D
Flue outlet piping
Direct venting - see page 14.
Vertical DV venting termination
Horizontal DV venting termination
TABLE - 2E
Air inlet piping materials
Vertical and sidewall combustion air inlet
Outdoor installation
Outdoor vent/air inlet location
TABLE - 2F
The outdoor vent cap kit
3
Connecting to gas supply
TABLE 3A INLET GAS PRESSURE
Gas pressure test
Gas piping
3
TABLE - 3C
TABLE 3B
Gas train and controls
Combination gas valves
3
Checking gas supply pressure
TABLE - 3D
Heat exchanger
Inlet and outlet connections
Water flow switch
Low water cutoff
Initial set-up of maximum water flow
Relief valve
Heating boiler installations
Piping of the boiler system
Boiler circulator requirements
Water connections (heating boilers only)
Low Temperature Return Water Systems
TABLE 4A
Low temperature bypass requirements
Minimum boiler water temperatures
Three way valves in system
Radiant floor and snow melt heating systems
TABLE - 4B
Low system water volume
TABLE - 4D
Boiler bypass requirements
TABLE - 4C
Temperature / pressure gauge
Page
Page
Page
Page
Boiler operating control module
TABLE - 5A
Installation must comply with:
Line voltage connections
Low voltage connections
EMS or remote thermostat connection
DHW (Domestic Hot Water) thermostat
DHW tank sensor
5
Louver relay
Louver proving switch
System supply sensor (recommended use)
System return sensor
Wiring of the cascade
Check/control water chemistry
Freeze protection (when used)
Fill and test water system
Purge air from water system
Check for gas leaks
Check thermostat circuit(s)
Check vent and air piping
Placing the boiler in operation
Start the boiler
If boiler does not start correctly
6
Figure 6-1_Lighting Instructions
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING:
OPERATING INSTRUCTIONS
Set DHW operation
NOTICE
General
How the appliance operates
How the control module operates
Control inputs and outputs
Temperature control
Protection features
Boiler temperature regulation
Outdoor reset operation, if used (boilers only)
Cascade
Page
Sequence of operation
OPERATION DISPLAY
Copper-fin II control module
Figure 7-1_Control Panel - Operator Interface
MENU/EXIT DISPLAY SCREEN ENTER/RESET
TXENSUOIVERPNWODPU
Access modes
Saving parameters
Status display screens
Status Display Screens
Screen # Display Shows Description
Screen #1 Line 1
Screen #1 Line 2
Page
Page
Page
Initial set-up of maximum water flow
TABLE - 8A
TABLE - 8B
Water chemistry
Page
Page
Page
Page
Pump operation
TABLE D
Heat exchanger
TABLE 8C
Minimum water temperatures (domestic hot water use)
Thermostat adjustment procedure
Optional adjustable auxiliary high water temperature limit control
Optional relief valve
Thermal expansion
Cathodic protection
Maintenance and annual startup Service technician
Owner maintenance
Address reported problems
Inspect appliance area
Check all piping for leaks
Inspect appliance interior
Flue vent system and air piping
9
Ignition system checkout
Check burner flame
Perform start-up and checks
Check flue gas passageways
Inspect and clean burner
Inspect and clean the heat exchanger
Review with owner
Oiled bearing circulators
10
NEUTRAL
120VAC COIL
PUMP RELAY
UNIT PUMP
10
G
MODBUS ADAPTER
GBK
3
11
BOX DEPICTS OPTIONAL ITEMS
120 VAC
LOW VOLTAGE
11
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LBL20083 REV B
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