Natural Or Propane 150,000 to 399,000 Btuh Input
INSTALLATION, OPERATING AND MAINTENANCE MANUAL
MODEL GT SERIES
gama ENERGY STAR
BOILER RATINGS & CAPACITIES
CONTENTS
BEFORE YOU START
High Altitude Operation
3.Un-pressurized,and gravity feed heating systems
BOILER LOCATION
Figure 1- Input vs Elevation Graph
4.Heating systems with very low pressures or flow
Service
COMBUSTION AIR
GENERAL VENTING GUIDELINES
Table 1 - Clearances
Table 2 - Vent & Air Intake System Sizing
HORIZONTAL DIRECT VENT SYSTEMS
Figure 3- Vent Pipe To Boiler Attachment
Number
Separate Air Intake and Vent Terminals
Figure 5 - Horizontal Terminal Locations
Figure 8 - Below Grade Installation
Figure 6 - Wall Penetration Detail
Figure 7 - Air Intake & Vent Pipe Attachment
Figure 10 - Debris Screen Installation
Figure 9 - External Air Intake and Vent Systems
Figure 12 - Vertical Concentric Terminal Location
Figure 16 - Two Pipe Using Dormant Chimney
VERTICAL DIRECT VENT SYSTEMS
Figure 14 - Debris Screen Installation
Figure 13 - Wall Penetration Detail
Figure 18 - Multiple Concentric Through the Roof
CONDENSATE DRAIN
Figure 17 - Concentric Through the Roof
Figure 19 - Condensate Piping
GENERAL PLUMBING GUIDELINES
Pressure Relief Valve
Figure 20 - Relief Valve Piping
SECONDARY LOOP PLUMBING
MULTIPLE BOILER PRIMARY LOOP
PRIMARY LOOP PLUMBING
Low Water Cut Off, LWCO
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Figure 24 - Multiple Boiler Installation
Figure 25 - Multiple Zones Using Circulators
Figure 26 - Multiple Zones Valves with Bypass Valve
Figure 27 - Gas Supply Piping
GAS SUPPLY PIPING
Table 5 - Equivalent Pipe Length Chart
Table 4 - Gas Pipe Capacity
ELECTRICAL WIRING
Thermostat Installation
Figure 28 - Basic Heating System Wiring
Multiple 4 Wire Zone Valves
GT INSTALLATION AND OPERATION INSTRUCTIONS
Figure 30 - Multiple 4 Wire Zone Valves
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GT INSTALLATION AND OPERATION INSTRUCTIONS
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Multiple Zone Pump Controller
Models Taco SR504, Argo ARM 861 Series
GT INSTALLATION AND OPERATION INSTRUCTIONS
Figure 33 - Boiler Ladder Diagram
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GT INSTALLATION AND OPERATION INSTRUCTIONS
Figure 34 - Boiler Connection Diagram
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Figure 36 - Reset Mode Operation Chart
SENTRY 2100T CONTROLLER
Figure 35 - Conventional Mode Operation Chart
Figure 37 - 2100T Display Screen
Recommended Settings
Figure 38 - Input Conversion Chart
Setting Sentry 2100T control
Table 6 - Recommend System Temperatures
Figures 40 - Reset Curve For Res = 70 F, 21C
Determining Reset Temperature HICalc
Figures 39 - Reset Curve For Res = 85 F, 29C
=200F, 93C - 70F, 21C /70F, 21C
Table 7 - Normal Flue Gas Composition
BOILER SET UP
OPERATING INSTRUCTIONS
Natural Gas
Figure 42 - Gas Valve Layout, GT-400
Manifold Pressure Line Pressure Input Screw
Figure 41 - Gas Valve Layout, GT-150
Ignition System
Figure 43 - Operational Flow Chart
FOR YOUR SAFETY READ BEFORE OPERATING
OPERATING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
Figure 44 - Burner Flame Thermostat Adjustment
BOILER CHECKING & ADJUSTMENT
Gas Pressure Adjustment
Input Rate
Burner Removal & Replacement
BOILER MAINTENANCE
Heat Exchanger Cleaning
Controls
Aquastat High Limit
WALL HUNG CONVERSION
Figure 47 - Air Inlet Pipe Installation
Figure 45 - Air Inlet Pipe Removal
Detected Problem
TROUBLE SHOOTING
Problem
Solution
Indicates that the
Air Switch is Open
Air Switch is Closed
Indicates that the
burner light is on
Ignition Sequence
not activated when
Fan is on and
warranty issue
residence. This is not a warranty issue
the housing
Sentry Controller
GT INSTALLATION AND OPERATION INSTRUCTIONS
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Description
REPLACEMENT PARTS LIST
Part Number
Part Number
Description
REPLACEMENT PARTS LIST
Part Number
Part Number
GT INSTALLATION AND OPERATION INSTRUCTIONS
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WESTCAST, INC
