Honeywell 7800 Series Installation Instructions Manual page 6

RM7898A 7800 SERIES VALVE PROVING PRIMARY RELAY MODULES
BEFORE
4 SEC. 3 SEC.
L1-17
L17-7
MV2 (21)
PII (20)
AFTER
RUN 4 SEC. 3 SEC.
L1-17
L1-7
MV2 (21)
SPLIT
STANDBY 4 SEC. 3 SEC.
L1-17
L1-7
MV1 (9)
LOCKOUT IF ON, M1 LEAKING (LOW PRESSURE TEST).
1
LOCKOUT IF OFF, MV2 LEAKING (HIGH PRESSURE TEST).
2
PURGE TIME FINISHES IF TIME REMAINING.
3
Fig. 4. RM7898 Relay Module operation, Valve Proving Test options.
Application
Line voltage terminals.
Keyboard Display Module
Data ControlBus™ Module
Remote Reset Module
a
The KDM, Data ControlBus™ Module (for remote mounting or communications) must be wired in daisy chain configura-
tion, 1(a)-1(a), 2(b)-2(b), 3(c)-3(c). The order of interconnection of all the devices listed above is not important. Be aware
that modules on the closest and farthest end of the daisy chain configuration string require a 120 ohm (1/4 watt mini-
mum) resistor termination across terminals 1 and 2 of the electrical connectors for connections over 100 feet (31
meters).
32-00209-03
TEST TIME
4 SEC.
MV1 (9)
VPS (16)
1
4 SEC.
TEST TIME
MV1 (9)
VPS (16)
1
PII (20)
PURGE BURNER RUN TIME
TEST TIME
VPS (16)
2
PII (20)
Table 1. Recommended Wire Sizes and Part Numbers.
Recommended Wire Size
14, 16 or 18 AWG copper conductor, 600 volt
insulation, moisture-resistant wire.
22 AWG two-wire twisted pair with ground, or five-
wire.
22 AWG two-wire twisted pair with ground, or five-
a
wire.
22 AWG two-wire twisted pair, insulated for low
voltage.
3 SEC. TEST TIME
VPS (16)
PII (20)
3 SEC. TEST TIME
VPS (16)
PII (20)
4 SEC. 3 SEC.
MV2 (21)
6
3
PURGE
2
PII (20)
STANDBY
2
TEST TIME
VPS (16)
1
PII (20)
Recommended Part Numbers
TTW60C, THW75C, THHN90C.
Belden 8723 shielded cable or
equivalent.
Belden 8723 shielded cable or
equivalent.
—
STANDBY
M23871