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GT INSTALLATION AND OPERATION INSTRUCTIONS

Page 6

The vent terminal shall not terminate:
•  Directly above a paved sidewalk or a paved drive-way 

that is located between two buildings, and that serves 
both buildings;

•  Less than 

7 ft

2.1 m

 above grade where located 

adjacent to a paved driveway or public walkway.

•  Within 

3 ft

0.9 m

, horizontally of a window or door that 

can be opened, or non-mechanical air supply inlet to 
any building.

• Within 

6 ft

1.8 m

, of a mechanical air supply inlet to 

any building or roof eve containing soffi t openings.

•  Above a meter/regulator assembly within 

3 ft

0.9 m

horizontally of the vertical centerline of the regulator.

• Within 

6 ft

1.8 m

, of any gas service regulator vent 

outlet.

• Less than 

30 in

762 mm

, plus snow allowance above 

grade, or any surface that will support snow, ice, or 
debris. 

The exhaust must be a minimum of 18 in, 

457 mm

, above the air inlet, and the air inlet must 

always be a minimum of 12 in, 

305 mm

. plus snow 

allowance above any surface that will support 
snow. A 24 in, 

610 mm

, plus snow allowance is 

highly recommended. Consult your weather offi ce, 
for the maximum typical snowfall for your region.

•  Underneath a verandah, porch, or deck. 
•  So situated that the fl ue gases are directed towards 

brickwork, siding, or other construction, in such 
a manner that may cause damage from heat or 
condensate from the fl ue gases. 

• Less than 

3 ft

0.9 m

, from an inside corner of an 

L-shaped structure including walls and fences. 
Under normal operating conditions this appliance will 
produce a plume of water vapor, and should be taken 
into consideration when selecting an adequate vent 
terminal location. A 

3 ft

0.9 m

, diameter stainless, 

plastic, or vinyl shield can be used to fl ash the exterior 
of the residence to protect is from damage.

Separate Air Intake and Vent Terminals

It is highly recommended that the air intake and vent 
terminals not be located where they will be exposed to 
normal prevailing winds.  Both terminals must be on the 
same wall.

The vent ter minal must be a minimum of 

18 in

457 mm

 above the air inlet terminal.  The air inlet terminal 

must always be a minimum of 

12 in

305 mm

, plus the 

snow allowance above any surface that will support 
snow, however a snow allowance of two feet is highly 
recommended Figure 5, 6, 7 & 8.

Consult your weather office for the maximum typical 
snowfall for your region. For example, in Boston MA the 
maximum typical snowfall is 

12 in

305 mm

. Therefore 

the inlet must be 

24 in

610 mm

, above any surface 

that will support snow and the exhaust must be 42 in, 

1067 mm

, above this surface.

The horizontal centerline distance between the inlet 
and exhaust terminals must be a minimum of

 4 in

102 mm

. If the horizontal distance between the inlet 

and exhaust is more than 

12 in

305 mm

, increase the 

vertical separation by the same amount to prevent fl ue 
gas recirculation.

For example, if the horizontal separation is 

24 in

610 mm

, a minimum ver tical separation of 

18 in

457mm

, + 

12 in

305mm

, = 

30 in

762 mm

 is required,. 

If the horizontal distance is greater than

 6 ft

1.8 m

no additional vertical spacing is required. The vertical 
separ-ation is never required to be greater then 

36 in

914 mm

.

Figure 5 - Horizontal Terminal Locations

Содержание GT-150

Страница 1: ...NING If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life INSTALLER THESE INSTRUCTIONS MUST BE AFFIXED ADJAC...

Страница 2: ...d long life for which this boiler was designed these instructions must be read understood and followed Direct all questions to your Smith distributor or to the Customer Service Department 260 North El...

Страница 3: ...however 24 in 610 mm is recommended 2 An optimum site will be level central to the hot water piping system and close to an outside wall NOTE This boiler is designed for direct placement on a combustib...

Страница 4: ...let System Attachment One of the following materials is to be used for the air intake pipe 3 in 76 mm ABS 3 in 76 mm PVC Sch 40 pipe 3 in 76 mm Galvanized Steel pipe See Table 2 for the maximum equiva...

Страница 5: ...mm vent collar to 3 in 76 mm at the boiler Figure 3 Figure 3 Vent Pipe To Boiler Attachment The maximum combined equivalent vent and intake pipe lengths are listed in Table 2 The length specified is t...

Страница 6: ...liance will produce a plume of water vapor and should be taken into consideration when selecting an adequate vent terminal location A 3 ft 0 9 m diameter stainless plastic or vinyl shield can be used...

Страница 7: ...lations that have to exit the foundation below grade excavate the site as shown in Figure 8 to a point below where the pipes exit the building Maintain the proper vent clearances as outlined above Att...

Страница 8: ...ditions must apply 1 If limited to two terminals the horizontal centerline distance must be 4 in 102 mm or greater than 24 in 610 mm to prevent flue gas recirculation For more than two terminals locat...

Страница 9: ...terminal must always be a minimum of 12 in 305 mm plus the snow allowance above any surface that will support snow however a snow allowance of 24 in 610 mm is highly recommended Figures 15 16 Consult...

Страница 10: ...nsure that the air inlet and vent system lengths are within the maximums specified in Table 2 The debris screens provided with the boiler must be installed in both the air intake and vent terminals In...

Страница 11: ...e products such as Fernox Superfloc for new installations and CHR Central Heating Restorer for retrofits Also add an inhibitor to the system water to prevent limestone and magnetite deposits from form...

Страница 12: ...diagram to be used as a vacuum breaker and to eliminate air upon filling Figure 21 LWCO Air Vent Piping PRIMARY LOOP PLUMBING This low mass boiler requires a continuous minimum water flow for proper...

Страница 13: ...terminals C1 L2 5 See Table 3 for Indirect Water Heater pump flow requirements This pump is wired to terminals AP L2 6 Set pressure reducing valve to 12 psi 83 kPa 7 Use 30 psi 207 kPa relief valve ma...

Страница 14: ...nals C1 L2 5 See Table 3 for Indirect Water Heater pump flow requirements This pump is wired to terminals AP L2 6 Set pressure reducing valve to 12 psi 83 kPa 7 Use 30 psi 207 kPa relief valve max Loc...

Страница 15: ...tiple Zones Using Pumps Figure 26 Secondary Loop For Multiple Zones Using A Bypass Valve Note Velocity noise may be a problem when the entire output of the system pump is flowing through the zone with...

Страница 16: ...he gas valve which can cause a fire or explosion GAS SUPPLY PIPING The GX hot water boiler comes from the factory ready to be piped to the gas supply The National Fuel Gas Code ANSI Z223 1 NFPA 54 and...

Страница 17: ...ps with a maximum inrush of 6 amps If the amp draw of the pumps exceeds these maximums a pump controller or isolation relay must be used to prevent damage to the boiler Damage caused by improper wirin...

Страница 18: ...uit between terminals T and C shutting down the pumps and the burner Multiple Zones w Taco Valve Controller Models ZVC403 to ZVC 406 Figure 31 shows the basic multiple zoned system using normally clos...

Страница 19: ...GT INSTALLATION AND OPERATION INSTRUCTIONS Page 19 Figure 30 Multiple 4 Wire Zone Valves...

Страница 20: ...GT INSTALLATION AND OPERATION INSTRUCTIONS Page 20 Figure 31 Multiple Zones w Taco Valve Controller Models ZVC403 to ZVC 406...

Страница 21: ...on the pump controller The controller energizes the appropriate circulating pump and closes the circuit between terminals T and C on the Sentry 2100 control The Sentry 2100 provides power to the prima...

Страница 22: ...GT INSTALLATION AND OPERATION INSTRUCTIONS Page 22 Figure 33 Boiler Ladder Diagram...

Страница 23: ...GT INSTALLATION AND OPERATION INSTRUCTIONS Page 23 Figure 34 Boiler Connection Diagram...

Страница 24: ...GT will maintain by increasing or decreasing the input Indirect Water Heaters The Sentry 2100 comes with an input and output for a 120 volt indirect pump When the A and C terminals are closed dry cont...

Страница 25: ...ter Error Code On Off NOTE LFS must not be set below 48 on the GT150 model To start the control operation return to RUN on the menu and press Function Normal operation will begin Recommended Settings...

Страница 26: ...C 70 F 21 C 1 85 RESET TEMPERATURE HICalc RES Outdoor Air x Reset Ratio RES 70 F 21 C 32 F 0 C x 1 85 70 F 21 C 70 6 F 21 C 70 F 21 C 140 6 F 42 C NOTE The design temperature is 0 F 18 C outside air...

Страница 27: ...mmediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control that has been under water NOTE The GT was tested with Natural...

Страница 28: ...ystem by turning the thermostat to it s lowest setting and then back to where it was or by momentarily interrupting the electrical power to the boiler D With the burner in operation close the manual s...

Страница 29: ...r Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control that has been under water 1 STOP Read the safety informatio...

Страница 30: ...s up to 2000 ft 610 m At elevations above 2000 ft 610 m input ratings should be reduced by 4 for each 1000 ft 305 m above sea level Check the input rate as follows NATURAL GAS 1 Turn off all other gas...

Страница 31: ...ing at the valve Figure 2 6 Remove the nuts used to attach the burner to the heat exchanger 7 Carefully slide the burner out of the unit 8 Inspect the burner for damage or signs of deterioration Use a...

Страница 32: ...bolts 7 Once the unit is level install the bottom two 14 3 lag bolts 8 Remove the Air Inlet Pipe assembly and Metering elbow from the gas valve venturi assembly Figure 44 Figure 44 Air Inlet Pipe Remo...

Страница 33: ...calculated using formula in Section 8 1 If the thermostat demand light is turning off the thermostat has satisfied 2 If DHW temp light is turning off the aquastat or call for domestic has been satisfi...

Страница 34: ...fan is running air switch may be faulty 4 If fan is not running check 120V wiring to blower if ok remove low voltage harness from blower if blower fails to start replace blower if blower does start p...

Страница 35: ...gas valve when it opens If boiler lights check for flame signal between FC1 And FC2 on Fenwal control If lower then 1 2 micro amps see Boiler will not stay lit below Check combustion properties If the...

Страница 36: ...vent from the boiler during ignition if unit lights smoothly with intake vent disconnected reconnect and check for proper combustion if unit maintains smooth operation after ignition Calibrate for pr...

Страница 37: ...ure the resistance of the thermister when disconnected 2 Using the appropriate chart find the resistance and move vertically for the water probe or horizontally for the air probe until the line is int...

Страница 38: ...GT INSTALLATION AND OPERATION INSTRUCTIONS Page 38 Figure 48 Replacement Parts Exploded View SIOM 36...

Страница 39: ...8 1 1 24 2 Clamp GT 82100 1 1 25 Sentry 2100 Control GT 82013 1 1 26 Complete Control Panel Assy GT 82754 1 1 27 PCB Optocoupler GT 82754 1 1 1 28 Outdoor Air Sensor 10K GT 81027 1 1 1 29 Transformer...

Страница 40: ...WESTCAST INC 260 NORTH ELM STREET WESTFIELD MA 01085 TEL 413 562 9631 FAX 413 562 3799...

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