Part number 550-100-168/0516
51
SlimFit
®
Series 3
COMMERCIAL
CONDENSING
GAS
-
FIRED
WATER
BOILER
—
Boiler Manual
Field wiring
SEE&IGURE&IGURE
(continued)
A. 120 VAC Power Supply –
REQUIRED
4ERMINAL"LOCK
(control panel, left side)
1. Boiler line voltage power — Boiler load is 18 amps. Provide and install a
fused disconnect or service switch (25- or 30-ampere rated recommended) as
required by applicable codes.
2. Connect properly sized
6!#
power wiring to
SlimFit
boiler line voltage
terminal strip as shown at right.
3. If possible, provide a surge suppressor in the supply power line. This will reduce
the possibilities of control damage due to line surges.
4. Must wire ground to this terminal to provide boiler grounding.
See Figure 52, page 60 for details
"6!#/UTPUTS
– On each boiler –
As needed for systems
4ERMINAL3TRIP0
(SlimFit control module, right side)
1. Output 1: P2 Terminals 1 (H), 4 (N), 7 (G).
2. Output 2: P2 Terminals 2 (H), 5 (N), 8 (G).
3. Output 3: P2 Terminals 3 (H), 6 (N), 9 (G).
4. Maximum load: 2.2 amps (use relay if circulator load is higher). See WARN-
ING below.
5. Each boiler has three outputs (Output 1, Output 2, and Output 3) that provide
120 VAC to the following listed below.
s
A zone circulator.
s
A system circulator.
s
A DHW circulator (used to circulate through an indirect tank).
s
An auxiliary item that must be energized during an input call, such as
an air damper.
6. When using inputs/outputs for heat/DHW demands, each input (Input 1,
Input 2, and Input 3) controls its respective 120 VAC output (Output 1,
Output 2, and Output 3). Outputs are energized only when BOTH condi-
tions below are met:
a. The corresponding input indicates a call for heat/DHW (i.e., contact
closure).
b. The PRIORITY assigned to the Input/Output pair is ACTIVE (i.e., the
zone may be calling but the pump won’t activate unless the boiler is cur-
rently running on that system/priority).
7. When using the inputs/outputs for the AUX PUMP/OUTPUT function, the
output is controlled by selectable conditions set up in the control.
a. Use the AUX PUMP/OUTPUT function for devices such as system pumps,
combustion air dampers, and other auxiliary equipment to activate when
the boiler is on/running.
b. See page 75 and page 76 for more information on the setup and selection
of operating conditions.
&OR0RIORITY$(7!PPLICATION
:
The DHW aquastat can be connected to any one of the three input/
output pairs. The selected input should be assigned to PRIORITY 1
during the WIZARD setup or manually in the ASSIGN INPUTS
menu.
See Figure 52, page 60 for details
Output circuits are 120 VAC. If an
output is to operate a low voltage cir-
cuit or must be an isolated contact,
use an isolation relay. See example
above for 24 VAC zone valves.
#)2#5,!4/20/7%2
—
4HEMAXIMUMALLOW
ABLECURRENTFOREACHCIRCULATORISAMPS
AT6!#
.
For circulators with higher amp ratings, install a circulator
relay or starter. Connect only the 120 VAC coil to the
SlimFit
circulator terminals.
Содержание 550 MBH
Страница 126: ...Part number 550 100 168 0516 126 SlimFit Series 3 COMMERCIAL CONDENSING GAS FIRED WATER BOILER Boiler Manual Notes ...
Страница 127: ...Part number 550 100 168 0516 127 SlimFit Series 3 COMMERCIAL CONDENSING GAS FIRED WATER BOILER Boiler Manual Notes ...
Страница 128: ...GAS FIRED WATER BOILER Boiler Manual SlimFit Series 3 COMMERCIAL CONDENSING GAS FIRED WATER BOILER Boiler Manual ...