Optional Variable Speed Pump Control - Bradford White Brute BNTH Installation And Operation Instructions Manual

Brute
BOILERS AND VOLUME WATER HEATERS
8.9 Optional Variable Speed Pump Control (V.S.P.C.)
Variable Speed Pump Control is optional equipment on all commerical Brute boilers (sizes 285 up to
850 MBH). Pump speed is controlled to maintain a user-chosen temperature rise between the inlet and
outlet of the Brute. CA013600
CA013600
For the entire kit and the complete 4 page instruction sheet, Reference Kit # CA013600
from the Variable Speed Pump Control box to the boiler. The
Black and White wires are for the 120V pump contact.
POWER CONNECTIONS:
• Connect the Blue wire anywhere on the 24V+ boiler Terminal Block (TB3).
• Connect the Yellow wire anywhere on the 24V Neutral boiler Terminal Block (TB4).
FOR YOUR SAFETY: This procedure must be performed by a professional service technician, qualifi ed in
• Connect the White wire to the
hot water boiler installation. Improper connections could create an electrical hazard, which could cause
FOR YOUR SAFETY: This procedure must be performed by a professional service technician, qualifi ed in
boiler pump connections on
serious injury, property damage, or death.
hot water boiler installation. Improper connections could create an electrical hazard, which could cause
boiler Terminal Block (TB5)
OUTDOOR WATER-TIGHT ENCLOSURE AND GROMMETS, NOT INCLUDED
serious injury, property damage, or death.
across from the other white wire.
OUTDOOR WATER-TIGHT ENCLOSURE AND GROMMETS, NOT INCLUDED
VARI-PRIME : A variable pump control that, when used with a variable speed pump, maintains a user-chosen temperature
TM
• Connect the Black wire to the
rise between the inlet and outlet of the boiler.
other boiler pump connection on
VARI-PRIME : A variable pump control that, when used with a variable speed pump, maintains a user-chosen temperature
TM
GENERAL PCB OPERATION: boiler Terminal Block (TB5).
rise between the inlet and outlet of the boiler.
1. The desired Delta T can be set to any of the following values by moving or adding jumpers to the (JP2) terminal on the control:
GENERAL PCB OPERATION:
See Figure 2.
1. The desired Delta T can be set to any of the following values by moving or adding jumpers to the (JP2) terminal on the control:
15 deg F/8 deg C
See Figure 2.
By adding a second jumper, one on "15 deg F" and one on "20 deg F", it is possible to achieve 35 deg F /19 deg C.
15 deg F/8 deg C
By adding a second jumper, one on "15 deg F" and one on "25 deg F", it is possible to achieve 40 deg F/22 deg C.
By adding a second jumper, one on "15 deg F" and one on "20 deg F", it is possible to achieve 35 deg F /19 deg C.
V.S.P.C.
2. As shipped, the VARI-PRIME has a jumper on the (JP4) terminal, to operate a 0-10 VDC output. If a 4-20 mA output is needed,
By adding a second jumper, one on "15 deg F" and one on "25 deg F", it is possible to achieve 40 deg F/22 deg C.
move the jumper to the (JP5) terminal. • Locate the Blue Gas Valve power wire coming from the Sola control.
2. As shipped, the VARI-PRIME has a jumper on the (JP4) terminal, to operate a 0-10 VDC output. If a 4-20 mA output is needed,
V.S.P.C.
Trace the wire through where it passes into the back panel, and locate
3. VARI-PRIME can operate in °F or °C. A jumper on the (JP1) terminal has set the default to °F. Remove that jumper for °C.
move the jumper to the (JP5) terminal.
the fi rst wire. Disconnect the male/female spade connection. Insert the
4 If Main Gas valve is "OFF" AND a call for heat is "TRUE" then the PCB overrides the PID control and runs the pump
3. VARI-PRIME can operate in °F or °C. A jumper on the (JP1) terminal has set the default to °F. Remove that jumper for °C.
connections as shown.
output at 100% (10 VDC, or 20 mA).
4 If Main Gas valve is "OFF" AND a call for heat is "TRUE" then the PCB overrides the PID control and runs the pump
5. Once the Main Gas valve is energized the PCB will maintain pump output at 100% for 60 seconds to allow the system to stabilize.
output at 100% (10 VDC, or 20 mA).
FIELD CONNECTIONS:
Once the 60 second timer has expired, the PCB will then run the pump output speed based on the jumper setpoint.
5. Once the Main Gas valve is energized the PCB will maintain pump output at 100% for 60 seconds to allow the system to stabilize.
• Remove Variable Speed Pump Control Cover.
6. When "T-T" is satisfi ed, the PCB will run pump at 100% output for the duration of the pump overrun time.
Once the 60 second timer has expired, the PCB will then run the pump output speed based on the jumper setpoint.
V.S.P.C.
7. The VARI-PRIME PCB has a low end cap to prevent nuisance low fl ow trips. The cap is factory programmed to 2 VDC. • Remove the Variable Speed Pump Control Box from the
6. When "T-T" is satisfi ed, the PCB will run pump at 100% output for the duration of the pump overrun time.
8. Factory settings are: Degrees - Fahrenheit packaging and familiarize yourself with each connection point.
7. The VARI-PRIME PCB has a low end cap to prevent nuisance low fl ow trips. The cap is factory programmed to 2 VDC.
INSTALLATION INSTRUCTIONS
8. Factory settings are: Degrees - Fahrenheit
10K OUTLET
P.I.D. CONTROL ADJUSTMENT:
INSTALLATION INSTRUCTIONS
With Variable Speed Pumping, the boiler control P.I.D. needs to be adjusted.
P.I.D. CONTROL ADJUSTMENT:
• These settings are found in your NeoTherm controls under: SENSOR
With Variable Speed Pumping, the boiler control P.I.D. needs to be adjusted.
• These settings are found in your NeoTherm controls under:
It is recommended to start with:
It is recommended to start with:
Depending on pump sizing and application requirements; these P.I.D. settings may
need to be used to fi ne-tune boiler performance.
Depending on pump sizing and application requirements; these P.I.D. settings may
• Once you have adjusted the P.I.D. contols, then disconnect power source from boiler.
need to be used to fi ne-tune boiler performance.
MOUNTING
• Once you have adjusted the P.I.D. contols, then disconnect power source from boiler.
• Remove front panels from boiler.
MOUNTING
• Mount the VARI-PRIME control box to your desired location. On INDOOR UNITS, the side
• Remove front panels from boiler.
of the boiler is an acceptable mounting location. See Figure 1.
LED1
• Mount the VARI-PRIME control box to your desired location. On INDOOR UNITS, the side
On OUTDOOR UNITS the Vari-Prime and it's wiring MUST be installed and
of the boiler is an acceptable mounting location. See Figure 1.
mounted within a water-tight enclosure (not included) and using wire
On OUTDOOR UNITS the Vari-Prime and it's wiring MUST be installed and TB1
grommets (not included) suitable for outdoor applications. Be careful that your
mounted within a water-tight enclosure (not included) and using wire
mounting screws do not interfere with internal components.
Figure 2
grommets (not included) suitable for outdoor applications. Be careful that your
• Run the wires from the VARI-PRIME control box, through the chosen 'knock-out' hole
mounting screws do not interfere with internal components.
and into the boiler. See Figure 1. Power wires must be run through conduit from the
• Run the wires from the VARI-PRIME control box, through the chosen 'knock-out' hole
and into the boiler. See Figure 1. Power wires must be run through conduit from the
VARI-PRIME
VARI-PRIME
Variable speed pump control kit for
Modulating Boilers
Model NTH.
Modulating Boilers
Model NTH.
20 deg F/10 deg C
20 deg F/10 deg C
Output Signal - 0 -10VDC
See Figure 2
Output Signal - 0 -10VDC
TB2
SENSOR
10K
INLET
Advanced Setup>CH Confi g>CH Confi g
Advanced Setup>CH Confi g>CH Confi g
P = 20 I =15 D = Factory set-point
P = 20 I =15 D = Factory set-point
R14 C12 R13 C11
PCB
DIGITIZED
P/N E2345200
JP1
7&8 = F
1&2 = SPARE JUMPER
Customer Service and Product Support:
Headquarters:
Customer Service and Product Support:
800.900.9276 • Fax 800.559.1583
1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax 905.366.0130
Installation Kit for
TM
Installation Kit for
TM
Sizes 285–850 MBTU/h
Sizes 285–850 MBTU/h
25 deg F/13 deg C
25 deg F/13 deg C
TB5
Terminal
TB4
Blocks
1 2
3 4
5 6
7 8
JP5
JP3
JP2
1&2 = (Delta T) 15 DEG F / 8 DEG C
3&4 = (Delta T) 20 DEG F / 10 DEG C
5&6 = (Delta T) 25 DEG F / 13 DEG C
7&8 = (Delta T) 30 DEG F / 16 DEG C
20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax 603.335.3355
(Customer Service, Service Advisors)
Document 7033
Document 7033
N T
EO HERM
N T
Brute EO HERM
30 deg F/ 16 deg C
30 deg F/ 16 deg C
TB3 4-20MA(+)
4-20MA(-)
1
2
3
4
0-10VDC(+)
0-10VDC(-)
N/O
1
JP4
2
COM
3
TB6
N/C
Figure 1
Figure 1
800.900.9276 • Fax 800.559.1583
800.900.9276 • Fax 800.559.1583
Page 49
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