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Household Appliance
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Boiler
Crestron electronic
- page 14
Models:
1.5
2
2.5
3
3.5
1
14
60
60
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60 pages, 5.56 Mb
14
Installation & Operation Manual
Vertical
2
General
venting
Sidewall
Direct venting
Vertical Vent, Sidewall Air
Sidewall
Vertical
Optional room air
Contents
Main
Contents
Hazard definitions
DANGER WARNING CAUTION CAUTION NOTICE
Please read before proceeding
When servicing boiler
Boiler operation
Boiler water
The Crest - How it works...
Left Side (inside unit)
Right Side (inside unit)
The Crest - How it works...
5
Front View
Models 1.5 - 2.0 - 2.5 - 3.0 - 3.5
7 36 6 35 9
Ratings
Crest AHRI Rating
Other Specifications
UNIT EQUIPPED FOR
HIGH ALTITUDE
Installation must comply with:
Before locating the boiler, check:
Provide clearances:
Provide air openings to room:
Flooring and foundation
Prevent combustion air contamination
When using an existing vent system to install a new boiler:
When removing a boiler from existing common vent system:
Remove boiler from wood pallet
Combustion and ventilation air requirements for appliances drawing air from the equipment room
Page
Page
2
Install vent and combustion air piping
Air inlet pipe materials:
Air intake/vent connections
Approved Stainless Steel Vent Manufacturers Make Model
Removing from existing vent
2
Common venting
Flue Damper Kits Model Damper Size Kit Number
3
Vent/air termination vertical
Prepare roof penetrations
Termination and fittings
Determine location
3
Multiple vent/air terminations
4 Sidewall direct
Vent/air termination sidewall
Determine location
Termination and fittings
Multiple vent/air terminations
4
Vent/air termination sidewall
Prepare wall penetrations
4
Room air
System water piping methods
Low water cutoff device
Chilled water system
Freeze protection
General piping information
CREST Pressure Drop Curve
Circulator sizing
Near boiler piping components
NOTICE
Figure 5-2 Single Boiler - Recommended - Primary / Secondary Piping with a Hot Water Generator
NOTICE
Model Number of Units
234567 8 Recommended Common Header Pipe Sizes in Inches
Figure 5-4 Single Boiler - Alternate - Fixed or Variable Flow Primary System Piping
NOTICE
NOTICE
Figure 5-5 Multiple Boilers - Alternate - Common Header - Fixed or Variable Flow Primary
Connecting gas supply piping
Propane Gas:
Natural gas:
6
TABLE - 6B
Check inlet gas supply
Gas Pressure
Gas valve replacement
Installation must comply with:
Line voltage connections
GROUND G
NEUTRAL W LINE BK SYSTEM PUMP
BOILER PUMP
Low voltage connections
Enable
Outdoor temperature sensor
Variable speed system pump
ModBus
7
Auxiliary switch 1 & 2
System supply sensor
Boiler management system
Runtime contacts
Figure 7-3 Low Voltage Field Wiring Connections
8
Condensate drain
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)
Inspect condensate system
Final checks before starting the boiler
Start the boiler
If boiler does not start correctly
Check system and boiler
Check flame and combustion
FOR YOUR SAFETY READ BEFORE OPERATING
Figure 9-2 Operating Instructions
OPERATING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
Check flame and combustion
Set space heating operation
Set Hot Water Generator (HWG) operation
General
How the boiler operates
How the control modules operate
Control inputs and outputs
Temperature control
Protection features
Boiler temperature regulation
Outdoor reset operation, if used
Cascade
Sequence of operation
Crest control module
Page
Maintenance and annual startup
Service technician
Owner maintenance
Address reported problems
Inspect boiler area
Check all piping for leaks
Inspect boiler interior
Clean condensate trap
11
Flue vent system and air piping
Check water system
Check expansion tank
Check boiler relief valve
Inspect ignition and flame sense electrodes
Check ignition ground wiring
Check all boiler wiring
Check control settings
Perform start-up and checks
11
Cleaning boiler heat exchanger
Handling ceramic fiber materials
REMOVAL OF COMBUSTION CHAMBER LINING
NIOSH stated First Aid.
12
Figure 12-1 Ladder Diagram
12
Figure 12-2 Wiring Diagram
HIGH VOLTAGE
SMALL CONNECTION BOARD
INTEGRATED CONTROL