Document YjMDd4YJrZNV82oOJ9z7VLLYK
AMERICAN GWM GAS STANDARD BOILER
INSTRUCTION MANUAL
MODULAR BOILERS
)
DESIGN CERTIFIED BY AMERICAN GAS ASSOCIATION
NOTICE TO INSTALLER AND OPERATOR THIS BOOKLET MUST BE AFFIXED ON OR AOJACENT TO THE HEATING EQUIPMENT.
r0RM .VO . BP- 31409-05
SERIES NO. 1B-J1
TABLE OF CONTENTS
ITEM
general information
SETTING THE UNIT AIR SUPPLY CHIMNEY RATINGS DATA GAS PIPE SIZE AND DELIVERY SCHEDULE CONTROL TAPPINGS PIPING RECOMMENDATIONS DIMENSIONS FOR INLETS AND OUTLETS UNPACKING WATER HEADER INSTALLATION JACKET INSTALLATION INSTALLATION OF CONTROLS & PIPING WIRING DIAGRAMS FILLING SYSTEM LIGHTING INSTRUCTIONS MANIFOLD PRESSURE ADJUSTMENT PILOT ADJUSTMENT MAIN BURNER AIR ADJUSTMENT GENERAL MAINTENANCE INSPECTION AND CLEANING OF BOILER SERVICE WATER PACKAGE
PAGE NO. I 1 2 2
3-7 8 9
10 11 14 15-21 15,22 25 26-28 29 30-31 33 33 33 6 34 35 36 37 - 42
06523
gwm gas boile r
general information
The GW M boilers, designed for maximum comfort and efficiency, are the latest development in cast iron boiler technology. Developed specifically for forced water circulation, the boilers are available for use with natural and propane gases. The boilers are designed to be mani folded together to give inputs up through 8,000 Mbh.
The boiler design is A.G.A. certified, and is constructed and tested in accordance with A.S.M.E. regulations for up to 50 psig working pressure (100 psig working pressure avail able on special order). The cast iron surfaces will afford long trouble-free service while providing optimum compactness for an atmospheric gas-fired Hydronic system.
Relatively small water content, and specially designed burners and controls permit close temperature control of the boiler water. Consequently, the boilers are not equipped with internal tankless water heaters. Recommendations are available for the installation of an external heat exchanger with the boilers which will give domestic hot water supply.
The GWM features: compact, light weight design; no separate base or combustion chamber; 5 thru 7 sections ranging from 264 Mbh to 396 Mbh input (see Table 1). The boilers are manifolded together to give input combinations as listed in Table 2. Other installation data are also given in Tables 2 and 3.
This manual gives the necessary information for the proper assembly, installation, operation, maintenance, and service of the units. For special problems contact American-Standard, Hydronics Department, 25 Rano Street, Buffalo, New York.
INSTALLATION REQUIREMENTS
The boilers should be installed in accordance with the latest American National Standards "Installation of Gas Appliances and Gas Piping" obtainable from the American Gas Association 1515 Wilson Blvd., Arlington, Virginia 22209. Installation should also conform with re quirements of local gas company and all state and city.building codes.
The boilers are approved for installation on nan-combustible flooring only. On hot water systems, the expansion tank should not be installed in cold or exposed place. If pipe leading to or from the tank freezes, serious damage may result. If valve of any description is installed in the piping leading to or from the expansion tank BE SURE THAT IT IS OPEN WHILE THE BOILERS ARE EN OPERATION.
LOCATION
Locate the boilers near the chimney or flue and as centralized with respect to the heat distri bution system as practicable. Provide the necessary service accessibility clearance.
For locations where the Poor is not level or if water conditions exist, the boilers should be mounted on a concrete base, preferably to a height of 3".
06524
gwm gas boiler
SERVICE ACCESSIBILITY CLEARANCES
From combustible material to boilers or vent collector - 6 inches. Front and rear for servicing, cleaning or removal of controls, burners and circulator - 24 inches.
In utility room installations, the door shall be wide enough to allow the largest part to enter or to permit the replacement of another appliance such as a water heater.
COMBUSTION AIR AND VENTILATION
Adequate facilities must be available for providing air for combustion and ventilation. Except for installations in large spaces (such as full basements) where infiltration can normally be assumed to provide sufficient air, this will usually necessitate:
(a) Two openings to interior space having adequate infiltration from the outside, one near the floor, the other near the ceiling installed in the door or a single wall of the boiler room. Each opening must have a minimum free area of one (1) square inch per 1000 Btu per hour of input rating of all appliances in the room.
(b) Additional opening to exterior space when combustion air must be obtained from outside, minimum free area of 1 square inch per 5000 Btu per hour of input rating, or in accordance with the methods outlined in the latest issue of A.N.S. Z21.30 entitled "Installation of Gas Appliances and Gas Piping".
CHIMNEY
1. Where two or more boilers vent into a common flue, the area of the common flue should at least equal the area of the largest flue or vent connector plus 50% of the areas of the additional flue or vent connectors.
2. Flue or vent connector must be inserted into, but not beyond, the inside of the chimney flue.
3. Horizontal runs of flue pipe should be kept at a minimum and should pi tch upward from the boiler at least 1/4" per foot.
l 1 fi '
06525
GWM GAS 30ILER
u
TESTING
Before connecting boilers to system, plug openings, fill boilers with water and subject to not less than 10 lbs. nor more than 50 lbs. pressure. Inspect boilers inside and outside for leakage as a result of breakage from handling and shipping. To safeguard accuracy of gauge and controls supplied with boilers, do not install until after test. This precaution of testing the boilers will simplify handling of any necessary replacements or adjustments and assist in treating claims against transportation companies. After test, drain and remove plugs where required.
i
Boiler Number
GWM-5
GWM-6
GWM-7
TABLE 1 - RATINGS FOR NATURAL AND PROPANE
A.G.A. Input Btu/Hr.
264,000
330,000
396,000
A.G.A. Output Btu/Hr.
211,200
264,000
316,800
Net Installed Radiation Mbh Water
183.5
229.6
275.7
I=B=R APPROVED
A.G.A. DESIGN CERTIFIED
J. 06526
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T A B IE 3 - GAS PIPE DELIVERY SCHEDULE AND CONNECTIONS
06531
GWMGAS BOILER
MMENDED PIPING WHEN AUX. MANUAL SHUTOFF VALVE OR SEPARATE >NUAL SHUTOFF VALVE AND AUTOMATIC GAS VALVE ARE SUPPLIED
DRIP LEG PIPE CAP
FLOOR LINE *E:
PIPING SHOWN ABOVE TEE NOT SUPPUED.
FIG. 2 < i f
06532
CvVMGAS BOILER FIG. 3 - DIMENSIONS FOR INLETS AND OUTLETS
U "T
H-
0--
CONVENTIONAL
EXPANSION TANK*!
TZ ' FLOW-
13 22
r
iI i
l4SI) 8 r-s i
i:
_L uJ5ll_
3M^6
ELECTRICAL -j-Qp
OUTLET
SIDE VIEW
j 90fL*i VO OF | VO SECTIONS BURNERS! 1____ :______
GWM-S, j
4
Ai
jJO-
Dimensions
13 <: 1)
O- 7*
'CWM-6 | 6 GWM-7 I 7
3 i! "f e- J7* 6 -si B' J7i
miter
FLUE
GAS .CgtftgCflfllfi.
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CONTENT oiameter HEIGHT A0<* (GALLONS) (INCHES) DRAFTHOOO (FT)
HAT
LR
11.9 T
19
A
4
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ia 13.9 a
IS
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>s 13 9 a
13 } X4
l f i!
06533
GWM GAS30ILER
BOILER WITH E LTM3NAIRE
The E LIMESAIRE Is a unique built-in air separator which prevents air from being transmitted to the system and directs the air to the compression tank. External air separators such as dip tube or inlined accessories are not required. This important feature on the L. H. END SECTION also allows for considerable simplification of the near boiler piping (See Figure Below) and assures positive air separation essential to proper system performance. The ELIMINAIEE plus the recommended piping provides for a substantial saving in material and installation cost.
FLOW PIPE-
iL------ EXPANSION TANK
PIPING FOR FLOW PIPE 8 EXPANSION TANK
FIG. 4
-if,1
06534
GWM GAS 30ILER
CAUTION
If and when boilers are used in connection with refrigeration systems, boilers should be so installed that chilled medium is piped parallel with the heating boilers using appropriate valves to prevent the chilled medium from entering the heating boiler.
When hot water heating boilers are connected to heating coils located in air handling units, where they may be exposed to refrigerated air circulation, such boiler piping system shall be equipped with flow control valves or other automatic means to prevent eravitv circu lation of the boiler water during the cooling cycle.
The expansion tank should not be set in a cold or an exposed place. If the pipe leading to or from the tank freezes, serious damage may result. If valve of any description is installed in the piping leading to or from the expansion tank BE SURE THAT IT IS OPEN WHILE THE BOILERS ARE IN OPERATION.
(
SUPPLY PIPE
SECONDARY 4. CIRCULATOR
STRAINER
RETURN PIPE FROM COMBINATION HEATING & COOL IN
UNITS
RECOMMENDED BOILER PIPING FOR COMBINATION HEATING & COOLING UNITS
USING MULTIPLE BOILERS
<
FIG. 5
L
06535
V.4 G'VM GAS BOILER
BOILER INSTALLATION
GWM boilers are shipped with sections and burners factory assembled and crated. Installation should be accomplished as follows:
FIG. 6 - Crated Boiler 1. Nails 2. Side Fasteners
UNPACKING BOILERS (See Fig, fi )
Place the boilers close to final location, if possible, before removing the shipping crates. (See Fig. for spacing of boilers).
If American-Standard cast iron headers are used (optional equipment), up to 8 boilers may be placed in a row. If more than 8 boilers are used witfrthese headers, the boilers should be split into two rows (9 thru 16 boilers) or into three rows (17 thru 21 boilers). The rows should be piped in parallel.
Each crate should be removed as follows:
1. Unfasten all crating wire at the corner of the crate.
2. Remove nails fastening crate sides to top and bottom of crate. Lift off the crate top and unwrap crate side from crate base. Remove the plastic bag.
3. Remove blocking which holds burners in place and which supports burners.
4. Loosen four cap screws that hold boiler to the crate base, one at either side of end sections. Remove both screws at one end section so that the two remaining screws can be slid out of the slots in the other end section. Move the boiler off the crate base to the final location.
Floor should be level where the boilers are installed.
06536
GWM GAS BOILER
WATER HEADER INSTALLATION
Install water headers. If primary-secondary pumping arrangement is used, refer to Figures 8, 9, and 10. If supply-return manifold arrangement is used to give parallel flow, refer to Figures Hand 12. Secondary circulators should be installed in accordance with these figures after the jacket is installed.
If American-Standard cast iron headers are not used, then headers shou.a be fabricated giving comparable locations for supply and return piping, relief valves, temp-pressure gauges and operating controls. The header diameter(s) should conform to the system supply and return size given in Table 2.
INSTALLATION OF JACKET
Each jacket should be installed as follows:
1. Install the four jacket angle clips to the front and rear plates with *3 x 3/8" sheet metal screws (See Fig. 7).
2. Hang the L. H. side panel and the R. H. side panel onto the jacket anuie clips.
FIG. 7
06537
GWM GAS 3QILER
06538
GWM GAS BOILER
06539
GWM GAS BOILER
(
4
L 06540
6 M BOILER W ANirOLO AND CONTROL AftRAM(WCNT TOR TWO t * O t SYSTEM
I9HO W IN9 FLOW FROM L E F T TO RiOHT VIEWINO SACK)
LOCATION PON L 4 0 0 S A CONTROLS ON A lB F B C -B INDOOR / OUT DOOR
CONTROLS WHEN USED-
06541
GWM GA5 BOILER
<
I
06542
GWM GAS BOILER
(Jacket Installation continued from pace 15)
3. Attach the jacket liner to the side panels with #8 x 3/8" sheer metal screws. LEAVE ALL JACKET SCREWS SLIGHTLY LOOSE UNTIL EN TIRE JACKET IS ASSEMBLED. Drape the loose end of the jacket liner insulation over the canopy (See Figure 14).
4. Attach the back panel to the side panels with #8 x 3/8" sheet metal screws.
5. Attach the tie bar to the side panels at the lower front portion of the boiler with #8 x 3/8" sheet metal screws (See Figure 15) .
6. Place the black upper front panel so that it engages the slots in the side panels and attach the top panel with #8 x 3/8" sheet metal screws.
7. Attach the number and series plate and the lighting instructions plate to the jacket liner with #6 x 1/4" sheet metal screws. (See Figure 15)
8. After installation of controls and wiring, the beige lower front panel should be installed (See Figure 16).
FIG. 14
JL , ,, l
06543
G'-VM GAS BOILER
FIG. 15
4
06544
GV/M GAS BOILETR
FIG.
06545
gwm gas boiler
INSTALLATION OF CONTROLS AND PIPING 1. Install the temperature-pressure gauges and the relief valves (with 3/4" nipple)
in the water header (See Figure 14 ). A full sized discharge pipe from the relief valves to drain is recommended. 2. Install the gas piping (refer to Table 2 for sizing information). All pipe joints must be made using compound resistant to propane gas. 3. Attach the safety pilot switches (when used) to jacket liners with #8 x 1/2" sheet metal screws. 4. Connect the pilot gas lines from the combination controls or safety pilot switches to the pilot burners. When safety pilot switches are supplied, install pilot gas supply lines from switches to pilot shutoff valves on manual shutoff valves. 5. Electrical service should be brought to the boilers and connections made to accord with the wiring diagram furnished on the inside of each jacket liner. (If the supplyreturn manifold arrangement is used, the wiring diagram is packed separately and is to be placed over the wiring diagram on the inside of each jacket liner. Install and connect transformers and operating controls according to applicable wiring diagram. If the 8-stage boiler sequencing control is used, it should be wired in accordance with Figure 19 . If electronic oontrols are used refer to the instructions contained in the electronic controls installation manual. 6. Install drain cocks in 1/2" tappings at rear of boilers using 1/2" nipples and couplings provided therefore. 7. Place drafthoods firmly on the flue outlet collars of the canopys which project above the jackets and connect to chimney. 8. Fill system (refer to page 29). 9. Test water system for tightness. Check all gas piping joints for leakage by using a soapsuds solution before operating unit. 10. Light boilers (refer to pages 30 and 31). 11. Make final burner adjustment and check out controls (refer to pages 33 and 34 ).
4
06546
Hi V 60 CT
CAVM GAS BOILER WIRING DIAGRAM FOR PRIMARY-SECONDARY PUMPING ARRANGEMENT
AUXlUAflr CIKM-T CONTROL (WHEN USEO)
LIMIT CONTROL
26
control
M 115 V 60 or
Kl
u
ur
o
CWCULATOR
a
OWM B0HJER WRM9 OIAOTAM
INTERMITTENT CIRCULATOR CNERRTTOW
_______ _
24 VOLT CONTROLS
31695 (____________ ____________________________________
' L . >F,
FIG. IT
06547
________________GWM uAO> BOILER______________ ______________________ -a WIRING DIAGRAM FOR
PRIMARY-SECONDARY PUMPING ARRANGEMENT
115 v so cr
auxiliary limit control
iwhcn usedi
limit control
pilot safety switch
operates
control
M69S i
H 115 V 60 CY
--a-
CIRCULATOR
w
JT\
24 V
AUXILIARY
UNIT
CONTROL
--y1 rW
UMIT CONTROL
J1r VI
PILOT SAFETY
SWITCH
JLrV\
HH
0PERAT1NG CONTROL
K ^v
GWM BOILER RM DIAGRAM INTERMITTENT CIRCULATOR OPERATION
24 VOLT CONTROLS
Q
FIG 17a
06548
GWM gas boiler
WIRING DIAGRAM FOR SUPPLY-RETURN MANIFOLD ARRANGEMENT
27
n -- ..... . -us v WCt ciaojuiroft ccrrmoc
------------------- (I------
W M*
4f 4f----- fit--rj
S
--
fW DtAORia ivjvf am ioum
t otr coaraotl
(aaojMrr caicuuiroa ewrmoo
<f* vAkV *
FIG 18
06549
27a
GWM GAS BOILER
9
WIRING DIAGRAM FOR SUPPLY-RETURN MANIFOLD ARRANGEMENT
MV TmMTIfMAT
WHM SUMMI ft.mtm mum
4 mr eMmoLi Uwajtfrv o0KucAT9 comwo
FIG 18a
06550
GWM GAS BOILER
EIGHT STAGE BOILER SEQUENCER WIRING DIAGRAM
FIG 19
06551
GWM GAS BOILEK
FILLING SYSTEM (GENERAL INFORMATION)
CAUTION: Never start boilers unless they are properly filled. Fol lowing filling, the piping elsewhere in the system should be checked for leaks. After boilers are in operation make-up water should be added slowly.
When filling a system, the pressure must not exceed 50 lbs. (100 lbs. with 100 lb. relief valve). If it does, it must be relieved immedi ately and the relief valve failure investigated and corrected, other wise pressure may build up and cause damage to heating system.
The owner should occasionally check the readings on the press-temp gauges. The higher range scale Indicates the water temperature within the boiler- header; and, should the water exceed 250F, opera tion must be discontinued until the system is checked and the fault corrected. The lower range scale indicates the pressure within the system and should not exceed 50 lbs. (100 lbs. with 100 lb. relief valve).
In a closed system the boilers and piping are entirely filled with water except for a cushion of air in the upper portion of the ex pansion tank. When the water is heated, it expands, compressing the air. If, for any reason, this air were completely displaced from the tank, there would no longer be a cushion. In that event an in crease in water temperatures would cause a corresponding increase in volume and pressure would force the relief valve open to discharge the excess volume. To correct such a condition, the expansion tank must be drained enough to permit the tank to fill with air.
{
06552
30 GWM GAS BOILER
PIPING ARRANGEMENT AND LIGHTING INSTRUCTIONS 24 VOLT SYSTEM
6 and 7 Section - Natural Gas
AUTOMATIC---------
i
-
GAS SUPPLY TO
ASSEMBLY OF GAS VALVE AND
MANIFOLD - 2* VOLT SYSTEM '
- '06553
GWM GAS BOILER
PIPING ARRANGEMENT AND LIGHTING INSTRUCTIONS
24 VOLT SYSTEM
5 Section - Natural Gas 5,6, and 7 Section - Propane Gas
3_L
FIG. 22
ASSEMBLY OF COMBINATION CONTROL AND MANIFOLD 24 VOLT SYSTEM
COMBINATION CONTROL
COMBINATION AUTOMATIC PILOT. PRESSURE REGULATOR. AUTOMATIC GAS VALVE. AND MANUAL SHUTOFF VALVE.
06554
CWM GAS BOILER
5 SECTION BOILER
Burners] J_.L2j [3j r4l
--------------- '
PILOT BURNER WITH
THERMOCOUPLE
6 SECTION BOILER
PILOT BURNER WITH
THERMOCOUPLE
7 SECTION BOILER
BURNER^
Lu
n-- 7-------------
PILOT BURNER WITH
THERMOCOUPLE
NOTE:
TO REMOVE PILOT BURNER NO. 1 ON 5 SECTION BOILER, FIRST REMOVE BURNERS NO. 2 AND 3.
PILOT LOCATION FOR ALL GASES
FIG. 24
BURNER AND PILOT ASSEMBLY FOR MANUAL IGNTTION
FIG. 25
06555
GWM GAS BOILER
lZLLOW TIPS (CAUSES CARBON FORMATIONS IH BOILER FLOSS)
LAZT, GRXZH INNER FLAKS
HOT EHOUGH PR IKART AIR
SHARP, BLUE, HARD
vyIXXER FLAKS
(OVERHEATS BDRKZBS)
SOFT, Bl-TX-ramr xmxxr FLAKS
ffl
TOO KOCH
PR IMART AIR
ffl
FRCUIC
VRCRO
RIGHT
FIG. 26
Ribbon burners - Natural gas Adjust air shutter to give sharp blue flame with no yellow. For natural gas, good performance is usually obtained with air shutter set to maximum open position.
TMEPERATURE LIMIT CONTROL The temperature limit conn.ui Is located in the upper left corner of the control vestibule. The limit control can be checked and adjusted by removing the front door. If replacement Is necessary, more ready access is obtained by: 1. Removing jacket top panel screws an each side. 2. Lifting top panel in front only until side panels can be moved outward approximately
1/4 inch allowing upper front panel to be removed. 3- Limit control is now completely exposed for service. 4. Replace panels and screws In reverse order. 5- Set limit control to 220 F or lower, if desired.
06556
GWM GAS BOILER
MAINTENANCE
general
IT IS IMPORTANT THAT THIS BOILER BE INSPECTED ONCE A YEAR BY A COMPETENT SERVICEMAN TO INSURE CONTINUED RELIABLE, SAFE OPERATION. This inspection should include checking of all boiler safety controls, pilot, section flueways and burners. See next page for instructions on burner and section inspection and cleaning. IN FALL BEFORE STARTING BOILER Drain system sufficiently to remove sludge in bottom of boiler. Do not drain more water than necessary to remove sludge, then refill to proper level as directed in this manual. MAINTENANCE OF BOILER WHILE IN OPERATION Check water level regularly and add water slowly when needed. If water must be added frequently, check system for leaks. This boiler is fired automatically. IN WINTER WHILE NOT IN OPERATION Drain entire system to prevent damage from freezing. Drain through drain cocks located at lowest point in system. Be sure boiler is completely drained. IN SUMMER WHILE NOT IN OPERATION Keep the system filled as during the heating season. This is the recommended time to have a periodic check up of all safety controls and a close inspection of the burners, flue passage ways, and flue pipe. It is also good practice to recheck the input firing rate and the gas air mixture on the burners to see that the boiler is operating at normal efficiency. GENERAL MAINTENANCE OF HEATING SYSTEM Keep radiators and convectors clean. If a hot water radiator is hot at the bottom but not at the top, it indicates that air has accumulated inside and should be vented. To vent radiator hold small cup under air vent (located near top of radiator), open vent until water escapes and then close. Fill hot water systems only as directed in this manual. If much water is added to system, it is advisable to heat system to a high temperature and vent again. This will make less venting necessary during the winter.
C
v. 06557
GWM GAS BOILER
njSPECTION AND CLEANING OF BOILER BURNERS AND FLUEWAYS
For maximum efficiency and safe operation, burners and boiler flue passages should be inspected and cleaned, if necessary, once a year. inspection Procedure: 1. Turn manual shutoff valve and pilot shutoff valve to off positions. 2. Remove lower front panel from boiler by lifting upward and pulling out. 3. Remove pilot line, vent line, and thermocouple. 4. Remove the burner access door (See Figure 25). 5. Remove burners by lifting at the rear, sliding them toward the back of the boiler
until free of the spuds, and lifting them out over the manifold. 6. Check burner gas ports or ribbons for lint and dirt. 7. Section cleanliness can be checked with a mirror and light inserted in the opening
where the burners have been removed. BURNER CLEANING If burner inspection reveals rust, scale or lint present, clean as follows: 1. Drilled Port Burner - Pass a #30 or #31 drill through the ports and shake any
dislodged material out through the mixing tube. 2. Ribbon Burners - Remove ribbon,hold down clamps,and then remove ribbons.
Separate ribbons by fanning out and clean with wire brush. Reassemble to burner. SECTION CLEANING If section inspection reveals soot or scale, clean as follows: 1. IMPORTANT - BE SURE TO REMOVE BURNERS BEFORE PROCEEDING. 2. Remove flue pipe, jacket top, and canopy-drafthood assembly. 3. Clean sections with a wire flue brush.
Reassemble, carefully locating all parts. 5. Install burners and light pilot.
Check burner air adjustement as directed in this manual.
C , ,{ i
06558
GWM GAS BOILED
06559
MAIN RETURN HEADER
GWM GAS BOILER
39
WATERMIXER ARRANGEMENT
06560
II5V.-60CY.
GWM GAS BOILER
H ----------------------------------- 115 V 60 CY ---------------------------------G
WIRING DIAGRAM FOR CIRCULATOR CONTROL SERVICE WATER PACKAGE
06561
AUXILIARY LIMIT
AQUASTAT CONTROLLER <L408fA OR EQUIV.)
H <
115 V 60 CY
w
V too
M4M Y w (LU 6* t VAW C
G
WIRING OIAGRAM GWM BOILERS
24 VOLT CONTROLS PARALLEL FLOW ARRANGEMENT FOR SERVICE WATER PACKAGE
06562
GW\: GAS BOILER
AUXILIARY P'LOT
LIMIT
SAFETY
AQUASTAT CONTROLLER (L408IA OR EQUl.
H
115 V 60CY
G
w
WIRING DIAGRAM GWM 80ILERS
24 VOLT CONTROLS PARALLEL FLOW ARRANGEMENT FOR SERVICE WATER PACKAGE
06563
115 V 60 cr
AUXILIARY LIMIT CONTROL (WHEN USED)
t^
~*UASTAT CONTROLLER < L408IA OR EOUIV.)
H 115 V 60 CY
o
CIRCULATOR
UU"
6
32407
GWM BOILER WIRING DIAGRAM INTERMITTENT CIRCULATOR OPERATION
24 VOLT CONTROLS PRIMARY-SECONDARY ARRANOEMEHT
FOR SERVICE WATER PACKAGE
06564
115 V 60 CY
GWM GAS BOILER
AUXILIARY LIMIT CONTROL (WHEN USED)
PILOT SAFETY SWITCH
4 2a
A0UAS7AT CONTROLLER ( L408IA OR EQUIV.)
32407
H 115 V 60 CY
Kl
--a
CIRCULATOR
w
j"r\.
24 V
AUXILIARY
UNIT CONTROL
1>
HIGH LIMIT CONTROL
1T4T-
PILOT SAFETY SWITCH
if
H I--
LOW LIMIT CONTROL
K
V
GWM BOILER WIRING OIAGRAM INTERMITTENT CIRCULATOR OPERATION
24 VOLT CONTROLS PRIMARY-SECONDARY ARRANGEMENT
FOR SERVICE WATER PACKAGE
6
06565
CAUTION TO INSTALLER AND OWNER
This hydronic heating- boiler incorporates the best in engineering and manufacturing techniques and will give years of good service and troublefree operation if properly treated.
The heat transfer surface has been carefully designed to give optimum performance and reliability. However, the presence of contaminants such as scale, sediment and boiler sealing compounds in the section waterways may serve to insulate the heat transfer surface and cause premature fail ure of the sections.
Scale build-up can be prevented by good installation practices which elimi nate addition of makeup water to the system.
Sediment which may accumulate in the boiler should be flushed out on a regular basis in accordance with recommended maintenance practices.
Occasionally, leaks will be detected in the system. These leaks are usually of such a nature that they may be prevented or corrected by good work manship. Every effort should be made to correct them without the use of boiler sealing compounds. If sealing compounds are used, they should be used as sparingly as possible and never in excess of the manufacturer's recommendations. Following their use the boiler must be thoroughly flushed out. Otherwise, serious damage may result.
In some special installations, glycol anti-freeze is added to the water in the system to protect against freezing during cold weather when the boiler is not being fired and the system is not drained. Although American Standard cannot recommend this practice, we recognize that glycol anti freeze will occasionally be used. Heat transfer is poorer with glycol than with water. Therefore, glycol should never be used in greater quantity than 50in the system; with any quantity, radiator output will be lower than with plain water. It is always better, when possible, to drain the en tire system, rather than use anti-freeze; the heating system and house plumbing will not freeze while the heating system is operating; and plumb ing is not protected if the heating system is not operating, whether or not anti-freeze is used.
Cast iron is highly resistant to corrosion. However, some propellants used in aerosol cans break down into poison gas and corrosive gas at high temperature; if aerosol mixtures are used near boilers, the aerosol will enter the boiler flame and be heated. Continued use of aerosol cans near heating systems may result in severe boiler heating surface corrosion and possible danger to health.
CONSUMER PROTECTION WARRANTY
American-Standard products normally reach owners or consumerusers through an industry channel of distributors and plumbing and heat ing contractors. Experience has shown that claims of defects in our pro ducts generally relate to abuse or to other damage which occur after our sale and are not our responsibility. Since determining proper responsibility requires local inspection, our warranty (set forth below) extends only to our direct buyers; distributors are best equipped to obtain the facts un derlying claims, to place responsibility where it belongs and to recom mend handle repair or replacement.
American-Standard warrants only to its distributors and other direct Buyers that it will furnish by freight a replacement for. or at its option repair, any product of its manufacture or part or portion thereof, proved to its satisfaction to be defective in material or workmanship under nor mal use and service within one year after installation.
THERE IS NO OTHER WARRANTY, EXPRESS OR IMPLIED. IN CLUDING NO IMPLIED WARRANTY OF MERCHANTABILITY OR IMPLIED WARRANTY FOR FITNESS FOR A PARTICULAR PURPOSE AND AMERICAN-STANDARD WILL NOT BE RESPONSIBLE FOR ANY DAMAGES WHATSOEVER NOR FOR LABOR OR TRANSPORTA TION EXPENSES RELATING TO SUCH REPLACEMENT OR SUCH REPAIR. NOR WILL IT BE HELD RESPONSIBLE FOR WARRANTY ADJUSTMENTS COSTING MORE THAN THE PRICE OF THE PRO DUCT TO ITS DISTRIBUTORS AND OTHER DIRECT BUYERS.
Goods of other manufacturers sold by American-Standard are not warranted unless accompanied by an express written warranty, but the Seller will endeavor to secure for its direct Buyers the benefits of war ranties extended by such other manufacturers for such goods.
American-Standard is proud of its record for product quality and for fairness in handling warranty matters; and. if an ultimate user of our products should feel our warranty system described above does not work fairly in his case, he should write the Office of the President, Director of Consumer Affairs. U. S. Plumbing/Heating, American-Standard, 40 West 40th Street, New York, N. Y. 10018.
DEALER'S NAME:_________ ADDRESS:_________________ TELEPHONE NO.:_______ DATE OF INSTALLATION:
AMERICAN STANDARD
PLUMBING ft HEATING
P. 0. BOX 2003
NEW BRUNSWICK, N.J. 08903