Slant/Fin Jaguar - Manual (Page 29)

Jaguar Caravan Multiple and Cascading Boilers 29
An external control with 0-10 Vdc output such as Tekmar 265 or 275
could be used to operate up to 4 boilers.
One special interface control is required for operation of each boiler in
the system. Use Slant/Fin interface kit (Part no. 830130). Kit includes
interface control and 3 different harnesses needed for connection of
Tekmar control to the interface and the boiler. See figure 20. Follow
Tekmar control manual D275 for installation and operating instructions.
Install interface control next to the Tekmar control.
Some local codes require 120 volt wiring to be encased within a
flexible or non flexible electrical conduit. Local codes may require
the interface control be mounted within an approved electrical box.
Follow code requirements for the jurisdiction where the boiler is
being installed.
11.1 ELECTRICAL WIRING
11.1.1 Power supply:
A separately fused circuit is required for power connection to
each boiler. Use standard 15 Amp fuse or breaker. Provide
disconnect means and overload protection as required.
Boilers must be electrically grounded in accordance with the
requirements of the authority having jurisdiction, or in the
absence of such requirements, with the National Electrical
Code, ANSI/NFPA 70- latest edition.
Use harness P/N 832112 (see figure 20) to connect power
supply to J1 connector of interface control. See figure 21.
Use BX cable or conduit for power supply connection. Proper
polarity is critical for power supply connections. Reversed
polarity will cause boiler lockout. Proper grounding is also
critical for boiler operation.
11.1.2 Interface control connection to the boiler:
Use harness P/N 832114 to connect interface J8 connector to
terminal #13 and 14 of the boiler. See figure 23.
11.1.3 Connecting Tekmar control 275 to interface control:
Use harness P/N 832115 to connect J5 connector of interface
to Tekmar control terminal # 7 & 8 (boiler No. 1) or terminal
# 8 & 9 (boiler No. 2) or terminal 10 & 11 (boiler No.3) or
terminal 11 & 12 (boiler No. 4). See figures 20 and 21.
11.1.4 Boiler, DHW and system circulators connection:
See Tekmar application brochure A275 for different piping
arrangements and electrical connections.
11.1.5 Outdoor and system water supply sensors:
See Tekmar manual A275 and D070 for installation instruction
and wire connection. Use sensors supplied with the Tekmar
control or recommended by Tekmar. Tekmar control sensors
are NTC thermistor 10 K ohm.
Note: Do not connect any other sensor(s) directly to the boilers.
11.1.6 Important: Set the switch in the interface control to “OFF”
position. See figure 21.
11.2 SETTING BOILER’S CONTROL FOR EXTERNAL SIGNAL
Fill system with water. See Installation and Operating Instruction of
Jaguar J-390C boiler (Publication J-40). Make sure flue pipes and
air intake pipes are installed per venting application section of the
above-mentioned manual. Each boiler’s control must be properly
programmed for the system. See table 4 for setting and program-
ming the controls.
Set each boiler’s control as follow:
1. Select option #5 in “c-t” mode
2. Select option #0 in “b-A” mode
3. Check “A-t” and “A-c” in model selection and confirmation
modes show #5, if not, set to #5.
4. Set Tekmar control: Follow Tekmar manual D275 to set control
for selected application. Sequential or parallel modulation
mode may be selected for boilers operation.
5. Combustion test: Run each boiler to check combustion and
input rate. See page 37 of J-390C manual (Publication # J-40).
11.3 VIEWING BOILER WATER TEMPERATURE
Press “Select” button for viewing boiler supply water, return water
and flue gas temperature on “Temperature Display”. See table 9.
11.4 BOILER OPERATION STATUS
“Mode Display” shows status of boiler operation. See table 10
“Temperature Display” shows boiler’s water temperature, lockout or
error condition.
DANGER: Before wiring always turn off electric power
supply. Otherwise shock or death can result.
HARNESS
PART NoN 83 2115
HARNESS
PART No 83 2114
HARNESS
PART No 83 2112
Figure 20. Harnesses packed with Interface kit.
11. CONTROL USING EXTERNAL BMS SIGNAL